Extinguishant Release Panel

Sigma ZXT
Installation Manual

*Man-1451*
Man-1451 Rev.02
Safety
Suppliers of articles for use at work are required under section 6 of the Health and Safety at Work Act 1974 to ensure
as reasonably as is practical that the article will be safe and without risk to health when properly used.
An article is not regarded as properly used if it is used ‘without regard to any relevant information or advice’ relating
to its use made available by the supplier.

This product should be installed, commissioned and maintained by trained service personnel in accordance with the
following:

(i) Regulations for electrical equipment in buildings specific to the country of use.
(ii) Codes of practice
(iii) Statutory requirements
(iv) Any instructions advised by the manufacturer.

According to the provisions of the Act you are therefore requested to take such steps as are necessary to ensure
that you make any appropriate information about this product available to anyone concerned with its use.

Suppliers of articles for use at work are required under section 6 of the Health and Safety at Work Act 1974 to ensure
as reasonably as is practical that the article will be safe and without risk to health when properly used.

An article is not regarded as properly used if it is used ‘without regard to any relevant information or advice’ relating
to its use made available by the supplier.

This product should be installed, commissioned and maintained by trained service personnel in accordance with the
following:

(i) IEE regulations for electrical equipment in buildings

(ii) Codes of practice
(iii) Statutory requirements
(iv) Any instructions specifically advised by the manufacturer

According to the provisions of the Act you are therefore requested to take such steps as are necessary to ensure
that you make any appropriate information about this product available to anyone concerned with its use.

This equipment is designed to operate at 230V AC 50/60Hz mains supplies, class 1 construction. As such it must
be connected to a protective earthing conductor in the fixed wiring of the installation and a readily accessible double
pole disconnect device meeting the requirements of EN60950/IEC950 which disconnects live and neutral simulta-
neously shall be incorporated in the fixed wiring.

Switch disconnect devices such as MK Sentry 63A or similar are suitable for this. Failure to ensure that all conduc-
tive accessible parts of this equipment are adequately bonded to the protective earth will render the equipment un-
safe.

This Control Panel is environmental class A and is designed for indoor use only at temperatures between -10°C and
+45°C with a maximum relative humidity of 95%. The IP rating for the enclosure is IP30.

Operation outside of these limits may render the equipment unsafe.

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Compliance
Sigma ZXT is compliant with the following standards:

EN54-2 and EN54-4 Fire Detection and Fire Alarm Systems - Control and Indicating Equipment

In addition to the standard EN54-2 requirements the following options with requirements have been includ-
ed in the Control Panel:

Output to alarm devices to enable an audible warning to be sounded throughout the premises upon the detection of
a fire condition or the operation of a manual call point. EN54-2 Section 7.8.

Test condition to allow the automatic resetting of zones in alarm for testing purposes. EN54-2 Section 10.

Delay of the actioning of fire alarm devices (sounders) so that an alarm may be verified before a premise is evacu-
ated. EN54-2 Section 7.11

In addition to the requirements of EN54-2, Sigma ZXT Control Panels have a voltage free relay contact for fire which
operates upon a fire condition. This is to be used for local control and signalling.

EN12094-1 Fixed fire-fighting systems - Components for gas extinguishing systems - Part 1: Requirements and test
methods for electrical automatic control and delay devices.

In addition to the standard EN12094-1 requirements the following options with requirements have been in-
cluded in the Control Panel:

EN12094-1 Section 4.17. Delay of extinguishing signal of up to 60 seconds.

EN12094-1 Section 4.18. Signal representing the flow of extinguishing agent to indicate the released condition.

EN12094-1 Section 4.19. Monitoring of the status of components by way of a low pressure switch input.

EN12094-1 Section 4.20. Emergency hold device to enable the extinguishant delay time to be extended.

EN12094-1 Section 4.21. Control of flooding time to deactivate the releasing output after a set period of time.

EN12094-1 Section 4.23. Manual only mode to disable the release of extinguishant via automatic detection devices.

EN12094-1 Section 4.25. Extinguishing signals to spare cylinders enables the switching to a spare set of cylinders
following a discharge to return the system to a functional state.

EN12094-1 Section 4.27. Emergency Abort device to inhibit the extinguishing signal until the emergency abort de-
vice has been de-activated and the Panel has been reset.

EN12094-1 Section 4.30. Activation of alarm devices with different signals to indicate pre-discharge and released
warnings using different sounds.

Default panel settings provide EN54-2 compliance:

BUZZER O/P: Enabled/Disabled This must be set to ENABLED.

MAINS FLT RLY DLY: OFF/30m This must be set to OFF.

FAULT RELAY: ENABLED/DISABLED This must be set to ENABLED.

FIRE RELAY: ENABLED/DISABLED. This must be set to ENABLED.

EARTH FAULT: ENABLED/DISABLED This must be set to ENABLED.

Important! Any deviation from these settings and compliance EN54-2 is void.

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Disclaimer
In no event shall The Manufacturer be liable for any damages or injury of any nature or kind, no matter how caused,
that arise from the use of the equipment referred to in this manual. Strict compliance with the safety procedures set
out and referred to in this manual, and extreme care in the handling or use of the equipment, are essential to avoid
or minimise the chance of personal injury or damage to the equipment.

The information, figures, illustrations, tables, specifications, and schematics contained in this manual are believed
to be correct and accurate as at the date of publication or revision. However, no representation or warranty with re-
spect to such correctness or accuracy is given or implied and The Manufacturer will not, under any circumstances,
be liable to any person or corporation for any loss or damages incurred in connection with the use of this manual.
The information, figures, illustrations, tables, specifications, and schematics contained in this manual are subject to
change without notice.

Unauthorised modifications to the fire detection system or its installation are not permitted, as these may give rise
to unacceptable health and safety hazards.

By installing this equipment on a computer network, the owner accepts full and unequivocal responsibility for ensur-
ing that it is protected against all cyber threats and illegal tampering during the lifetime of the equipment. Any soft-
ware forming part of this equipment should be used only for the purposes for which The Company supplied it. The
user shall undertake no changes, modifications, conversions, translations into another computer language, or cop-
ies (except for a necessary backup copy).In no event shall The Manufacturer be liable for any equipment malfunction
or damages whatsoever, including (without limitation) incidental, direct, indirect, special, and consequential damag-
es, damages for loss of business profits, business interruption, loss of business information, or other pecuniary loss,
resulting from any violation of the above prohibitions.

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 Contents i

Section 1
Introduction ...................................................................................................................... 1
Section 2
Overview ........................................................................................................................... 2
Section 3
Panel Installation .............................................................................................................. 6
Before You Begin ............................................................................................................................................6
Installation checklist ........................................................................................................................................6
Fascia Panel/PCB Assembly Removal ...........................................................................................................7
Mounting the Panel .........................................................................................................................................9
Control Panel Fascia Wiring ............................................................................................................................11
Electrical Connections .....................................................................................................................................12
Enclosure Earth ...............................................................................................................................................12
Power Supply ..................................................................................................................................................13
Input Circuits ...................................................................................................................................................13
Detection Circuits ......................................................................................................................................... 13
BS5839 Detector removal ............................................................................................................................ 14
Intrinsically Safe (I.S.) Detection Zones ....................................................................................................... 14
Monitored Inputs .............................................................................................................................................15
Non-Monitored Inputs ......................................................................................................................................17
P1 & P2 Prog I/P’s ........................................................................................................................................ 17
Output Circuits ................................................................................................................................................18
Sounder circuits ............................................................................................................................................ 18
Extinguishing Outputs .....................................................................................................................................19
Operating of Dual Extinguishing Outputs ..................................................................................................... 19
Solenoid Wiring ...............................................................................................................................................20
Igniting Actuator Wiring ...................................................................................................................................20
Relay Outputs .................................................................................................................................................21
AUX 24V DC Supply .......................................................................................................................................22
RS485 Output .................................................................................................................................................22
Section 4
Controls ............................................................................................................................. 23
Control Panel Fascia .......................................................................................................................................23
Alarm status ................................................................................................................................................. 23
General status .............................................................................................................................................. 23
Extinguishant status ..................................................................................................................................... 23
LED Indications ...............................................................................................................................................24
Alarm Status Indications ............................................................................................................................... 24
General Status Indications ........................................................................................................................... 25
Extinguishing Status Indications ................................................................................................................... 26
Liquid Crystal Display (LCD) Indications .........................................................................................................28
Dynamic Displays ......................................................................................................................................... 28
User Controls ..................................................................................................................................................31
LCD Navigation Push Button ........................................................................................................................ 31
Silence Buzzer ............................................................................................................................................. 31
Silence Alarm ............................................................................................................................................... 31
Alarm Re-sound ........................................................................................................................................... 32
Reset ............................................................................................................................................................ 32
Manual Release ........................................................................................................................................... 32
Control Key-Switches ................................................................................................................................... 33
Internal Indicators and Controls ......................................................................................................................34
Watchdog Reset ........................................................................................................................................... 34
Processor Reset ........................................................................................................................................... 34
Term. Exting. (Terminate Extinguishing) ...................................................................................................... 34
Memory Lock ................................................................................................................................................ 34

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 Contents ii

Section 5
Panel Configuration ......................................................................................................... 35
Access Levels .................................................................................................................................................35
Access Level 1 ............................................................................................................................................. 35
Access Level 2 ............................................................................................................................................. 36
Access Level 3 (Engineering) ....................................................................................................................... 41
Connection to LE2 ...........................................................................................................................................53
Section 6
Adding/Removing Status Indicators & Ancillary Boards ............................................. 54
Adding a Status Unit to a ZXT .........................................................................................................................54
Removing a Status Indicator ...........................................................................................................................57
Adding an Ancillary Board to a ZXT ................................................................................................................58
Removing an Ancillary Board ..........................................................................................................................60
Section 7
Maintenance & Assistance .............................................................................................. 61
If You Need Help .............................................................................................................................................61
Limited Returns and Repairs Policy ................................................................................................................61
In-Warranty Items ......................................................................................................................................... 61
Damaged Goods .......................................................................................................................................... 61
Component Failure ....................................................................................................................................... 61
Service Replacement Items ......................................................................................................................... 61
Repair Warranties ........................................................................................................................................ 62
Out Of Warranty Items ................................................................................................................................. 62
Customer Repairs ........................................................................................................................................ 62
Section 7
LCD Menu Structure ......................................................................................................... 63
Appendix A
Specification ..................................................................................................................... 67
Mechanical ......................................................................................................................................................67
Electrical ..........................................................................................................................................................67
Environmental .................................................................................................................................................70
Battery Calculation ..........................................................................................................................................71
Appendix B
Glossary ............................................................................................................................ 72

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 Introduction 1

Section 1
Introduction
Sigma ZXT is an advanced Extinguishing Control Panel designed for monitoring and control of gaseous fire sup-
pression systems.

Flexible and easy to use, clear status information is provided using a combination of LED’s and Liquid Crystal Dis-
play (LCD). The LCD also provides access to configuration menus enabling easy set-up as well as Event Log infor-
mation.

Three conventional detection zones provide the alarm stimulus required to activate the release of extinguishant. Any
single zone or combination of multiple zones, can be configured to contribute to the release of extinguishant.

Programmable volt-free relay outputs are provided which enable remote status signalling to other equipment.

Sigma ZXT functionality can be expanded by the addition of up to 7 Status Indicator Units providing remote indica-
tion and controls and up to 7 Ancillary Boards providing additional status outputs.

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 Overview 2

Section 2
Overview
The figure below provides an overview Sigma ZXT Panel hardware.

Figure 2-1
Compact Panel Features

1 3 4 5 6 7
Alarm General Extinguishant Controls

2 Power On Pre-activated/ Enable

Activated

Zone 1 Fire Power Fault Reserve Selected

Zone 2 Fire General Fault Released

Zone 3 Fire System Fault Hold Operated

Zone 1 Fault / General

Disablement Abort Operated
Disabled / Test
Zone 2 Fault / Test Flooding Zone Auto Manual

15
Disabled/ Test Fault / Disabled

16
Zone 3 Fault / Buzzer Silenced Extinguishant
Disabled / Test Disablement

Sounder Fault Delay Active Low Pressure

Sounder Disabled Extract Fan On Manual Release

8 9 10 11 12 13 14

1. Panel enclosure 11. LCD navigation push buttons

2. Control Panel fascia 12. Enter push-button
3. Alarm status LED indicators 13. Alarm Re-Sound push-button
4. General status LED indicators 14. Reset push-button
5. Liquid Crystal Display (LCD) 15. Manual Release push-button with protective cover
6. Extinguishant status LED indicators 16. Panel enclosure lock
7. Control key-switches
8. Silence buzzer push button
9. Alarm push button
10. Lamp Test and menu exit push-button

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 Overview 2

Figure 2-2
Compact Panel Internal Features

4 5 6 7 8

3
P1 P2 0V NO C NC NO C NO C NO C NO C NO C E
ZONE 1 ZONE 2 ZONE 3 PROG I/P FAULT FIRE RELEASED MODE HOLD ABORT S1 S2 S3 HOLD ABORT MAN. MODE REL PRES. LOW PRES. LCK OFF EXTING. RS485 AUX24

XMP201TAUK
RELAY RELAY RELEASE SWITCH SWITCH 24V DC
THIS SYSTEM CONTAINS STATIC SENSITIVE DEVICES. TO AVOID DAMAGE,
DO NOT PLUG OR UNPLUG RIBBON CABLES WHILE BOARD IS POWERED.

INSERTION OR REMOVAL OF CONNECTORS OR CIRCUIT BOARDS SHOULD

Alarm General Extinguishant Controls

Power On Pre-activated/ Enable

Activated

Zone 1 Fire Power Fault Reserve Selected

9
BE DONE WITH MAIN AND BACK UP POWER OFF.

Zone 2 Fire General Fault Released

2
Zone 3 Fire System Fault Hold Operated

On
10
Zone 1 Fault / General

Memory Lock
Disablement Abort Operated
Disabled / Test
Zone 2 Fault / Test Flooding Zone Auto Manual
Disabled/ Test Fault / Disabled
WARNING:

Off
Zone 3 Fault / Manual Extinguishant

Term.Exting.
Disabled / Test Buzzer Silenced Disablement
Extinguishant Release
Pull Down - Push Button

11
Sounder Fault Delay Active Low Pressure

Processor Reset
Sounder Disabled Extract Fan On Manual Release

W/Dog Reset
1

1. Standby batteries (x2) 7. Enclosure fixing point (x3)

2. Controls Panel fascia fixings (x2) 8. 2.6A Power supply
3. Enclosure hinge points (x2) 9. Mini USB connection
4. Enclosure back-box 10. Memory lock toggle switch
5. Enclosure cable entry points (knock-outs) 11. Reset micro-switches
6. Control Panel wiring terminals

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 Overview 2

Figure 2-3
Large Panel Fascia Features

1 3 4 5 6 7
Alarm General Extinguishant Controls

2 Zone 1 Fire
Power On

Power Fault
Pre-activated/
Activated

Reserve Selected
Enable

Zone 2 Fire General Fault Released

Zone 3 Fire System Fault Hold Operated

Zone 1 Fault / General

Disablement Abort Operated
Disabled / Test

15
Zone 2 Fault / Test Flooding Zone Auto Manual
Disabled/ Test Fault / Disabled
Zone 3 Fault / Buzzer Silenced Extinguishant
Disabled / Test Disablement

Sounder Fault Delay Active Low Pressure

Sounder Disabled Extract Fan On Manual Release

8 9 10 11 12 13 14
16

1. Panel enclosure 11. LCD navigation push-buttons

2. Controls Panel fascia 12. Enter push-button
3. Alarm status LED indicators 13. Alarm Re-Sound push button
4. General status LED Indicators 14. Reset push-button
5. Liquid Crystal Display (LCD) 15. Manual Release
6. Extinguishant status LED indicators 16. Panel enclosure lock
7. Control key-switches
8. Silence buzzer push-button
9. Silence Alarm button
10. Lamp Test and menu exit push-button

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 Overview 2

Figure 2-4
Large Panel internal layout

4 5 6 7 8

3
P1 P2 0V NO C NC NO C NO C NO C NO C NO C E
ZONE 1 ZONE 2 ZONE 3 PROG I/P FAULT FIRE RELEASED MODE HOLD ABORT S1 S2 S3 HOLD ABORT MAN. MODE REL PRES. LOW PRES. DIS EXTG EXTING. RS485 AUX24

XMP201TAUK
RELAY RELAY RELEASE SWITCH SWITCH 24V DC
THIS SYSTEM CONTAINS STATIC SENSITIVE DEVICES. TO AVOID DAMAGE,
DO NOT PLUG OR UNPLUG RIBBON CABLES WHILE BOARD IS POWERED.

INSERTION OR REMOVAL OF CONNECTORS OR CIRCUIT BOARDS SHOULD

Alarm General Extinguishant Controls

Power On Pre-activated/ Enable

Activated

Zone 1 Fire Power Fault Reserve Selected

9
BE DONE WITH MAIN AND BACK UP POWER OFF.

Zone 2 Fire General Fault Released

2
Zone 3 Fire System Fault Hold Operated

General

10
Zone 1 Fault /

On
Abort Operated

Memory Lock
Disabled / Test Disablement
Zone 2 Fault / Test Flooding Zone Auto Manual
Disabled/ Test Fault / Disabled

Off
WARNING:

Zone 3 Fault / Buzzer Silenced Manual Extinguishant

Disabled / Test Disablement

Term.Exting.
Extinguishant Release
Sounder Fault Delay Active Pull Down - Push Button Low Pressure

11

Processor Reset
Sounder Disabled Extract Fan On Manual Release

W/Dog Reset

1. Standby batteries (x2) 7. Enclosure fixing point (x3)

2. Controls Panel fascia fixings (x2) 8. 5.25A Power supply (behind controls fascia)
3. Enclosure hinge points (x2) 9. Mini USB connection
4. Enclosure back-box 10. Memory lock toggle switch
5. Enclosure cable entry points (knock-outs) 11. Reset micro-switches
6. Control Panel wiring terminals

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 Panel Installation 3

Section 3
Panel Installation
This section describes the installation process.

Before You Begin

Before you begin the installation, take time to review the installation information, gather the required items and com-
plete the tasks listed below.

CAUTION!

The installation must be performed by qualified personnel familiar with electronic components. Electronic
components within the Control Panel are vulnerable to damage from electronic discharge. Ground straps
must be worn by installers before handling circuit boards to prevent damage from electronic discharge.

• Create a plan and checklist before starting the installation process.

• Select an environment that is suitable for operating the Control Panel. The site chosen for mounting the Control
Panel should be clean, dry, flat and not subject to excessive shock, vibration or heat. Ensure after the installa-
tion the Control Panel enclosure is free from any debris.
• Verify the following items are present:

Item Quantity Description

Enclosure 1 Mild steel enclosure comprising of lid, back-box, hinge pins, label plates, Panel lock.

Control Panel 1 Control Panel assembly (fascia plate) complete with printed circuit board (PCB).

Power supply 1 2.6A or 5.25A power supply.

Earth connections 1 Green/yellow earth wires fitted with spade connectors, between enclose lid and back-box.

Standby battery leads 1 For connecting standby batteries.

Quick Start Guide 1 Essential Setup information and gateway to Product Manual.
End of line diodes 4 Fitted to sounder and solenoid circuits for monitoring

Battery leads 1 Used to connect standby batteries.

Keys 4 2x enclosure lock, 2x enable controls.

End of line resistors 10 Fitted to monitored input terminals for monitoring.

Installation checklist

 Create an installation plan and checklist.

 Remove the Panel from its packaging and check the contents.

 Remove the Control Panel fascia/PCB assembly.

 Mount the enclosure to the premises wall using appropriate fixings.

 Refit Control Panel fascia/PCB assembly.

 Thread external cabling into the enclosure and make connections to Control Panel terminals.

 Place standby batteries in base of enclosure and make connections.

 Apply mains power.

 Configure.

 Test installation.

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 Panel Installation 3

Fascia Panel/PCB Assembly Removal

To assist the installation it is recommended that the Control Panel fascia is removed, this prevents potential damage
and provides additional working space.

Steps to remove fascia plate:

Important! For safety reasons mains power must be disconnected before attempting to remove the fascia plate.

1.Disconnect the DC supply to the fascia PCB by removing the pluggable connector mounted as shown in figure 3-1

Figure 3-1
Disconnect DC Supply

2.Disconnect the 14-way PSU monitoring ribbon cable from the Fascia PCB as shown in figure 3-2.

Figure 3-2
Disconnect 14-Way Cable

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 Panel Installation 3

3.Locate the two screws securing the fascia plate to the enclosure. Loosen the screws enough to allow the fascia
plate to be removed as shown in fig 3-3.

Figure 3-3
Remove Fascia Plate

1
2

4.Store the fascia plate in safe location until required.

5.To refit the fascia plate follow steps 1 to 3 in reverse.

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 Panel Installation 3

Mounting the Panel

The control panel should be located in an accessible place as agreed with the end user.

Mounting should be at a height suitable for viewing status displays and operation of controls. Mounting surfaces
should be clean, dry and flat, uneven mounting surfaces can cause distortion of the enclosure and internal PCBs
leading to problems.

5mm screws or bolts should be used along with suitable wall plugs to secure the control panel to the wall.

Control panels should not be mounted inside other enclosures, near sources of excessive heat or close to any ca-
bles or equipment of high voltage or high frequencies.

External cabling should enter the control panel through suitable cable glands fitted in the knock-outs provided.

Note: Enclosures vary. Figure 3-4 and Figure 3-5 show enclosure back box dimensions and fixing centres.

Figure 3-4
XM2 Back Box Dimensions (mm). Drawing Not to Scale.

365.8
315.8
29.0
262.1
319.6

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 Panel Installation 3

Figure 3-5
XM3 Back Box Dimensions (mm) Drawing Not to Scale.

365.8
315.8
29.0
428.6
374.6

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 Panel Installation 3

Control Panel Fascia Wiring

Shielded fire alarm cable such as FP200 and metal cable glands must be used for all circuits connected to the Panel,
the resistance of any core of the cable must not exceed 25 Ohms.

Fire alarm cables must be bonded securely to the enclosure via a metal cable gland.

Multiple size knock-out cable entries are provided in the top of the enclosure back box (12 x M20, 2 x M22) and
where possible wiring should enter the enclosure using these knock-outs. Cables should be formed tidily to the ap-
propriate terminals leaving only enough wire to ensure that there is no strain on the PCB.

Wiring must not go across the front of the circuit board plate or between the plate and the circuit board.

Figure 3-6
Wiring practice

CORRECT
;

INCORRECT
: INCORRECT
:

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 Panel Installation 3

Electrical Connections

All connections for field wiring are to a single row of screw terminals along the top of the Control Panel circuit board.

Figure 3-7
Screw Terminals

P1 P2 0V NO C NC NO C NO C NO C NO C NO C
ZONE 1 ZONE 2 ZONE 3 PROG I/P FAULT FIRE RELEASED MODE HOLD ABORT S1 S2 S3 HOLD ABORT MAN. MODE REL PRES. LOW PRES. DIS EXTG EXTING. RS485 AUX24
RELAY RELAY RELEASE SWITCH SWITCH

The table below shows terminal designations.

Terminal Function Connec- Terminal Function Connec- Terminal Function Connec-

No. tion No. tion tion.

TP1 (+) TP19 NO TP37 REL (+)

ZONE 1 HOLD PRES.
TP2 (-) TP20 C TP38 (-)
SWITCH

TP3 (+) TP21 NO TP39 LOW (+)

ZONE 2 ABORT PRES.
TP4 (-) TP22 C TP40 (-)
SWITCH

TP5 (+) TP23 (+) TP41 (+)

ZONE 3 S1 DIS EXTG
TP6 (-) TP24 (-) TP42 (-)

TP7 P1 TP25 (+) TP43 (+)

S2 EXTING.
TP8 PROG I/P P2 TP26 (-) TP44 (-)

TP9 0V TP27 (+) TP45 (+)

S3 RS485
TP10 NO TP28 (-) TP46 (-)
FAULT
TP11 C TP29 (+) TP47 (+)
RELAY HOLD AUX 24
TP12 NC TP30 (-) TP48 (-)

TP13 FIRE NO TP31 (+)

ABORT
TP14 RELAY C TP32 (-)

TP15 RELEASED NO TP33 MAN (+)

TP16 C TP34 RELEASE (-) TP60 (+)

TP17 MODE NO TP35 (+) 24V DC E

MODE
TP18 C TP36 (-) (-)

Enclosure Earth
Important! To maintain continuity of Earth, a wire is provided connected between the enclosure earth terminal block
(found on the inside rear of the enclosure back-box) and mains Earth.

This connection must be maintained and in place prior to panel operation.

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 Panel Installation 3

Power Supply
Sigma ZXT has two power supply options (specified at time of purchase):

2.6A Power supply 5.25A Power supply

Input voltage 230V AC Input voltage 230V AC
Output voltage 20.3 - 28.3V DC Output voltage 19 - 28.5V DC
Power rating 2.6A Power rating 5.25A
Standby batteries (max.) 2 x 7Ah SLA Standby batteries (max.) 2 x 18Ah SLA

Either version provides power for the main PCB as well as monitoring and charging of back-up batteries.

The DC output of the power supply is connected to a pluggable terminal block located in the upper right of the main
PCB. The pluggable terminal facilitates the removal of the fascia plate/PCB assembly.

Important! Mains input to the power supply must be disconnected before removal of the pluggable terminal block.

Fault monitoring of the power supply is provided by an 14-way IDC cable harness between the power supply and the main
Panel PCB.

Sigma ZXT is offered in two enclosure versions. The XM2 version accommodates 2 x 7Ah SLA batteries. The XM3 version
can accommodate up to 2 x 18Ah SLA batteries.

Input Circuits
The Sigma ZXT is provided with various monitored and non-monitored input circuits, this sub-section provides details on
functionality and wiring for each of the inputs.

Detection Circuits
Three conventional detection circuits are provided for the connection of conventional type automatic detection de-
vices.

Each conventional detection zone circuit provides a nominal 21.3V DC (+/-0.1V) to power conventional Detectors.

Conventional detection zone circuit must be wired as a single, two core radial circuit monitored by means of a 6k8Ω
end of line (EOL) resistor. EOL monitoring resistors are supplied fitted in the Control Panels’ terminals and must be
removed and installed in the last device on the zone circuit.

The 6K8Ω EOL resistor should be left connected to the terminals of any unused zones.

The number of detection devices supported per zone will vary dependent on detector manufacturer. The current rat-
ing of the zone circuit and zone devices should be reviewed at system design stage.

To ensure compliance with circuit monitoring requirements no more than 32 devices should be fitted to one zone.

Figure 3-8
Detection Circuit Diagram

DETECTOR DETECTOR

IN OUT IN OUT
+ + + +

- - - -
IN OUT IN OUT

+ - END OF LINE
ZONE RESITOR

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 Panel Installation 3

BS5839 Detector removal

Systems required to comply with BS5839 Part 1 detector removal requirements must be fitted with a 47uF capacitor
(provided in spares bag) across the zone terminals and an LCMU active end of line monitoring device at the end of
the zone in place of the end of line resistor. Detectors installed on the zone must use detector bases fitted with a
schottky diode, circuit wiring details are shown in fig 3-9.

Figure 3-9
BS5839 Part 1 Detector Removal Zone Wiring

47μF CAPACITOR
SCHOTTKY DIODE

IN OUT
+ +

- -
IN OUT

+ - DETECTOR LCMU
ZONE Part No. K14060

Intrinsically Safe (I.S.) Detection Zones

Sigma ZXT supports the use of I.S. barriers for connecting to intrinsically safe detection devices installed within haz-
ardous areas.

Important! Only I.S. certified detectors may be installed within hazardous areas and must be connected to the ZXT
Control Panel through a compatible I.S. barrier - MTL5561.

Connection of the I.S. barrier changes the characteristics of the detection circuit, to enable correct monitoring of the
circuit the Panel zones must be configured for use with I.S. barriers (see the configuration section of this manual).

The number of detection devices that can be connected to an I.S. detection zone is limited by the I.S. approval sys-
tem diagram which should be supplied by the detector manufacturer. The power rating of the end of line resistor will
be dependent upon the Zone classification rating (Gas class) this will be specified on the system diagram.

Figure 3-10
Intrinsically Safe Detection Zone Diagram

SAFE AREA HAZARDOUS AREA

DETECTOR DETECTOR

MTL5561 IN OUT IN OUT

+ + + + + +

- - - - - -
IN OUT IN OUT

+ - END OF LINE
ZONE RESITOR

For detection zone configuration, please go the Configuration section of this manual.

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 Panel Installation 3

Monitored Inputs

Sigma ZXT is provided with many monitored inputs for the connection of external system accessories such as pres-
sure switches, key-switches etc.

Monitored inputs have same characteristics as detection zones and require 6K8Ω EOL resistors to monitor circuit
integrity, i.e. short circuit or open circuit faults. A 470Ω triggering resistor must be wired in series with the switch
connected to the circuit as shown in the diagram below.

Figure 3-11
Monitored Input - Example Circuit

RELEASE
PRESURE
SWITCH

470 6K8
+ - OHM OHM
REL PRES.
SWITCH

The following headings describe the functionality associated with each monitored input provided on the Sigma ZXT.

For connection of external Hold switches, i.e. Kentec part ref. KB91000M10 and K91000M10.
The HOLD input can be activated (by operation of an emergency hold device) during the 2nd
stage imminent gas release countdown to halt the extinguishant release process. Activation of
the input will stop the countdown timer, 2nd stage sounders will change to 1 sec ON and 2 sec
s OFF pulsing, "Hold Operated" LED will illuminate, panel buzzer will sound and LCD will dis-
play the word 'HOLDING'. Any relay output configured to signal an active HOLD state will also
operate.

HOLD (+/-) The HOLD input is a non-latching input which when de-activated will return to its normal state,
"Hold Operated" LED will be off any HOLD relays will revert to normal state and the release
process will be restarted with the countdown timer restarting from its original start value.

If the HOLD input is activated with the panel in normal state or prior to a release countdown
the "Hold Operated" LED will illuminate, the panel buzzer will sound and the LCD will display
"HOLD is ACTIVE". If a 2nd stage countdown commences the release countdown will be
stopped, the LCD will change to display "HOLDING" and the extinguishant release process
will be halted.
For connection of external Abort switches i.e. Kentec part ref. K13470M1.
The ABORT input can be activated (by operation of an emergency abort device) during the
2nd stage imminent gas release countdown to abort the extinguishant release process. Acti-
vation of the input will stop the countdown timer, "Abort Operated" LED will illuminate, panel
buzzer will sound and LCD will display the word 'ACTIVATION ABORTED'. Any relay output
configured to signal an active ABORT state will also operate. In the ACTIVATION ABORTED
state the panel 2nd stage alarm condition can be cleared by resetting the control panel.

ABORT (+/-) The ABORT input is a latching input which when de-activated will not automatically clear the
active ABORT state. An active ABORT state can only be cleared by resetting the control
panel.

If the ABORT input is activated with the panel in normal state or prior to a release countdown
the ABORT LED will illuminate, the panel buzzer will sound and the LCD will display "ABORT
operated". If a 2nd stage countdown commences the release countdown will be stopped, the
LCD will change to display "ACTIVATION ABORTED" and the extinguishant release process
will be aborted.
For connection of external Manual Release Call Points. Activation of this input (by operation of
a remote manual release call-point) will manually trigger the extinguishing release process.
MAN RELEASE (+/-)
The Control Panel will activate all indications, outputs and timers associated with a 2nd stage
alarm followed by the release of extinguishant.

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For connection of remote Auto/Manual mode key-switches. Activation of this input will change
the status of the extinguishing system from Auto to Manual mode.
De-activation of the input will return the extinguishing system to Auto mode. The mode status
MODE (+/-)
is indicated by the “Auto” and “Manual” LEDs on the front fascia.
If the Panel has already been placed in Manual Mode from another source i.e. Panel key-
switch or Status indicator, operation of this input will have no effect.
For connection of pressure switches used to confirm the release of extinguishant.
Activation of this input will put the Control Panel into 2nd stage gas discharge confirmation
state. All indications and outputs associated with 2nd stage discharge confirmation shall be
REL PRES. SWITCH (+/-)
activated, LCD will show “DISCHARGED”.
The input can be configured for use with either Normally Open (Normal) or Normally Closed
(Inverted) pressure switches, see the Configuration section of this manual.
Activation of the DIS EXTG (Disable Extinguishing) input disables the Extinguishant Release
function of the Control Panel. Any alarms which are activated will be indicated as normal how-
ever no gas release will be instigated. This is a non-latching input when de-activated the extin-
DIS EXTG (+/-) guishing disablement will be automatically removed.

The panel will indicate the disablement status by illuminating the "Flooding Zone Fault/Disa-
bled", "Extinguishant Disablement" and "General Disablement" LEDs.
For connection of Pressure Switches used to monitor for low pressure within extinguishant cylin-
ders.
The input will be activated following a successful gas discharge or when the pressure within the
LOW PRES. SWITCH (+/-) gas cylinder drops below a set level indicating the presence of a leak.
Activation of the input will illuminate the "Low Pressure" LED and will flash the "Flooding Zone
Fault/Disabled" The input can be configured for use with either Normally Open (Normal) or Nor-
mally Closed (Inverted) Pressure Switches (see the Configuration section of this manual).

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Non-Monitored Inputs

P1 & P2 Prog I/P’s

Two non-monitored programmable inputs are provided which can be used to monitor signals from other remote
equipment or activate various control features remotely. The inputs are held high in their default state (3.3V) and
must be pulled low (0V applied) to activate i.e. via a key-switch or remote relay contact. A 0V input terminal is pro-
vided next to the P1 & P2 terminals which can be used as the 0V trigger.

P1 & P2 can be configured to any of the following functions/states:

In this mode the input can be used to manually initiate an evacuation of the building/area. Activation
of the input will operate sounder outputs S1 & S2. The LCD will turn a red colour (if dynamic) and dis-
Evacuate
plays the text “EVACUATE”. This function is non-latching therefore sounders will only operate while
the input is active, de-activation of the input will return sounder circuits S1 & S2 to their default state.

Activation of the input in this mode will silence active devices attached to sounder circuits S1 & S2.
Silence Alarm
This function will not work if Sounders S1 & S2 are configured as non-silenceable.

Reset Activation of the input in this mode will replicate the functionality of the reset button on the front of the panel.

Activation of the input in this mode will trigger a general fault indication on the Control Panel. This
can be used to signal the fault status of other devices connected to the control panel on the panel
facia i.e. The fault output of an aspirating unit connected to a detection zone.
General Fault
Activation of the input in this mode is for status indication only and will not affect the functionality of
the panel.
Activation of the input in this mode triggers a flooding zone fault indication on the control panel fas-
cia.

This can be used to provide status information relating to equipment connected to the panel which
Flooding Zone Fault
may be linked to the flooding zone.

Activation of the input in this mode is for status indication only and will not affect the functionality of
the panel.

Activation of the input in this mode will trigger a general disablement indication on the Control Panel.
This can be used to signal the disabled status of detection devices which have their own disable
function i.e. Aspirating systems can be disabled at the detector, a disabled output can be connected
General
to this input to notify when an aspirating device connected to the panel is disabled.
Disablement
Activation of the input in this mode is for status indication only and will not affect the functionality of
the panel.

Activation of the input in this mode puts the Control Panel into Access Level 2. The Panel will remain
Access Level 2
at Access Level 2 only while the input is active.

This options allows the input to be a trigger for manual activation of an extract fan. Activation of the
input will operate any relay output which has been configure as an extract output.
Start Extraction
When activated the "Extract Fan On" LED will illuminate.

This function will only be available when Sounder circuit S2 is configured as an extinguishing output
Use Reserve
and the Panel is configured for Main and Reserve cylinder setup. Activation of the input will transfer
Extinguishing
the extinguishing system to use the reserve set of cylinders should gas release be triggered.

This mode allows the input to be used to monitor the status of non-essential equipment remote to the
Transparent panel. A transparent event will not be displayed on the panel fascia but will be logged in the event log
i.e. could be used to monitor open and closed state of access doors.

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Output Circuits
The Sigma ZXT is provided with various monitored and non-monitored output circuits. This section provides details
on functionality and wiring for each of the inputs provided.

Sounder circuits
Three fully monitored polarised conventional sounder circuits are provided on the Sigma ZXT, identified as S1, S2 and S3.

S1 and S2
These are common alarm sounder outputs providing notification of an active fire condition on any of the detec-
tion zones, notifying personnel of the need to evacuate the area. These sounders operate in compliance with
EN54-2.

Sounder circuit S2 is a configurable output, in its default state it operates as a conventional sounder output in
compliance with the requirements of EN54-2. However S2 can be programmed to operate as a second extin-
guishing output in compliance with EN12094-1. This provides support for extinguishing systems which require
dual common extinguisher outputs or dual outputs for main and reserve cylinder systems.

Note: The functions and settings available for S2 will change depending on its configuration. No sounder set-
tings are available for S2 when it is configured as an extinguishing output and vice versa.

Note: It is important if sounder output S2 has been reconfigured to be an extinguishing output that this is clearly
identified within the panel.

To configure Sounder S2 as an extinguishing output follow the steps below:

1. Enter ENGINEERING MENU (Access Level 3) using password

2. Select "System settings" option
3. Scroll down to "Sounder 2 OP" option
4. Use left and right cursor keys to toggle to set the "Sounder 2 OP" to "Extinguisher".

If using S2 as an extinguishing output connection refer to the relevant installation and configuration sections of
this manual.

S3
This is a 2nd stage alarm sounder which notifies personnel of an impending extinguishant release within the
risk area. Operates in compliance with the requirements of EN12094-1

- The sounder output has multiple states to clearly indicate different stages of a gas release.
- Pulsing 1 sec on, 1 sec off indicates a 2nd stage alarm extinguishant release is imminent.
- Pulsing 1 sec on, 2 seconds off indicates an emergency hold device hasbeen activated and release count
down has stopped.

Continuous operation indicates that extinguishant has been released in to the protected area.

Sounder circuits are fully monitored utilising an end of line diode (IN4004).

Figure 3-12
Sounder Circuit Diagram

POLARISED POLARISED
SOUNDER SOUNDER

IN OUT IN OUT
+ + + +

- - - -
IN OUT IN OUT

+ - IN4004
S1 END OF LINE DIODE

Each Sounder circuit has a maximum rating of 0.5 Amps. Sounder circuits must be wired as a single, radial circuit
with no spurs or T-junctions to enable the monitoring circuit to work correctly. Configuration options are available for
sounder circuits S1 & S2. These are detailed in the Configuration section of this manual.
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Extinguishing Outputs
Sigma ZXT in its default configuration has one dedicated extinguishing output for activation of an extinguishing so-
lenoid or igniting actuators. The output is rated at 1 Amp continuous operation or 3 Amps for a maximum of 50ms.

Sigma ZXT has the capability of providing a second extinguishing output supporting systems where dual extinguish-
ing outputs are required. To provide the second extinguishing output it is necessary to reconfigure the functionality
of sounder output S2, see configuration section of this manual. Configuring sounder output S2 as an extinguishing
output will change the default functionality and the configuration settings associated with S2. S2 as an extinguishing
output will be referred to in the configuration menu settings as EXT2, the primary extinguishing output is referred to
as EXT1. The rating of EXT2 (S2) is the same as EXT1, 1 Amp continuous operation or 3 Amps for a maximum of
50ms.

Note: It is important if sounder output S2 has been reconfigured to be an extinguishing output that this is clearly iden-
tified within the control panel.

The wiring details for solenoids or actuators to extinguishing outputs EXT1 or EXT2 (S2) are shown in figs 3-13 &
3-14.

As different solenoids/actuators will have different resistances it is essential to calibrate the extinguishing outputs to
ensure they are correctly monitored for open and short circuit fault conditions. The solenoid or actuators should be
connected as shown in this manual and then select the CALIBRATE EXT1 and CALIBRATE EXT2 options as re-
quired in the access level 3 "ECD settings" menu.

Operating of Dual Extinguishing Outputs

If dual extinguishing outputs are being used they can be configured for two methods of operation either common or
main/reserve. the operation of both is described as follows:

COMMON
Common dual extinguishing outputs are used where the activation of two solenoids is required to release a sin-
gle set of extinguishing cylinders.

Each extinguishing output can have a configured release delay to enable them to operate both at the same time
or at different times one after the other.

MAIN/RESERVE
This type of configuration is used for systems where two identical sets of cylinders are used to provide a back-
up following a release.

EXT1 will be connected to the main set of extinguishing cylinders and EXT2 (S2) will be connected to the
reserve set of cylinders. An activation of the extinguishing system will operate output EXT1 only. To return the
system to a functional state the control panel (prior to main cylinders being refilled) can be manually changed to
reserve mode whereby the system will use EXT2 and the reserve set of cylinders to continue functioning. This
will allow the extinguishing system to continue protecting the risk area until the main cylinders are refilled.

To switch the panel between common and main/reserve extinguishing outputs follow the below steps:

1. Enter ENGINEERING MENU (Access Level 3) using password

2. Select "ECD settings" option

3. Scroll down to "Sounder 2" option

4. Use left and right cursor keys to toggle the setting between "Common Exting" and "Reserve Exting”

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Solenoid Wiring
Solenoids used with the ZXT must have a resistance of greater than 28 Ohms to ensure that the maximum current
rating of the extinguishant output is not exceeded. A suppression diode should be fitted across the solenoid to pre-
vent back EMF generated by the solenoid when it de-energises from effecting the ZXT.

Figure 3-13
Solenoid Wiring Diagram

Note:
Check solenoid specification. Some po-
+ larised solenoids will already have a sup-
pression diode fitted internally.

DIODE 1N4004
BAND END TO (+)

+ -
EXT1 or EXT2 (S2)

Igniting Actuator Wiring

A maximum of four igniting actuators can be wired in series.

If less than 3 igniting actuators are fitted, a 2R2Ω, 2.5W resistor must be wired in series to provide the correct mon-
itoring resistance. The end of line diode can be discarded when igniting actuators are used.

Important! To ensure firing under all conditions, the total resistance of actuators, monitoring resistor and cable
should not exceed 7 Ohms.

Figure 3-14
Igniting Actuator Wiring Diagram

M M M M

3 OR 4 ACTUATORS WIRED IN SERIES

(MAXIMUM OF 4)
+ -
EXT1 or EXT2 (S2)

M M
1 OR 2 ACTUATORS 2R2 2.5W RESISTOR
WIRED IN SERIES FITTED IN SERIES WHEN
1 OR 2 ACTUATORS ARE USED
+ -
EXT1 or EXT2 (S2)

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Relay Outputs
Six Volt Free Change Over (VFCO) Relay outputs are provided in the ZXT rated at 30V DC 1 Amp. The default iden-
tification and operation of these outputs are as follows:

• Fault
• Fire
• Released
• Mode
• Hold
• Abort

The operation of the relays can be re-configured to signal other status conditions, there are 15 programmable status
conditions that the relays can be programmed for:.

Output will be normally open and switches to closed with an active fire event. Fire relays are non-silence-
Fire
able i.e. Relay remains active when silence alarms is pressed and can only be cleared by a panel reset.

Output will be normally open and switches to closed with an active zone alarm. Alarm relays are silenca-
Alarm
ble i.e. relay will return to normal state when silence alarm button is pressed.

Fault A fail-safe relay which is normally closed and will switch to open when a fault is active on the system.

Pre-Activated Output will be normally open and switches to closed when a 1st stage alarm is active.

Activated Output will be normally open and switches to closed when a 2nd stage alarm is active.

Released Output will be normally open and switches to closed on confirmation of extinguishant release.

On Manual Output will be normally open and switches to closed when extinguishing system is in Manual mode.

On Hold Output will be normally open and switches to closed when the Hold input is active.

On Abort Output will be normally open and switches to closed when the Abort input is active.

Low Pressure Output will be normally open and switches to closed when the Low Pressure input is active.

Release Disabled Output will be normally open and switches to closed when extinguishing release system is disabled.

On General Output will be normally open and switches to closed when an active disablement exists on the panel.
Disablement

Reset Output will be normally open and switches to closed when the Reset button is pressed.

Output will be normally open and switches to closed when an extract input is activated. This output is
Extract
used to activate an extract system.

See the Configuration section of this manual on how to programme relay outputs.

Relay operation can be programmed as required by the installer, however terminals within the control panel are iden-
tified by their default configuration. It is important if the configuration of the relay has changed from its default mode
of operation that the terminals in the panel are clearly marked with the new mode of operation.

Important!
The default settings for relays ensure compliance to EN54-2 and EN12094 standards. Changing the functionality of
the relay outputs will make the extinguishing system non-compliant with the above standards.

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AUX 24V DC Supply

An auxiliary 24V DC (300mA) supply is provided to enable local signalling or control ancillary systems.

The auxiliary supply output is fitted with short circuit protection to prevent damage in the event of a wiring fault.

If the AUX 24V DC supply is used to power electromechanical devices such as relays or door retainers. It is imper-
ative that a suppression diode be fitted across the coil of the device, to prevent the generation of high voltage tran-
sients back to the Control Panel power supply.

The AUX 24V DC can be programmed so that the supply is maintained upon a reset. (See Configuration section of
this manual).

Important! Due to start-up current the Auxiliary Output can power no more than two status indicators.

RS485 Output
An RS485 output is provided on the Sigma ZXT to allow connection of Status Indicators and Ancillary PCB’s.

The RS485 output will support a combination of up to 7 x Status Indicators (addresses 1-7) and 7 x. Ancillary PCB’s
(addresses 1 - 7).

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Section 4
Controls
Sigma ZXT combines LED status indications with a 128 x 64 pixel display to ensure status information is clear and
concise.

Figure 4-1
Control Panel fascia

Alarm General Extinguishant Controls

Power On Pre-activated/ Enable

Activated

Zone 1 Fire Power Fault Reserve Selected

Zone 2 Fire General Fault Released

Zone 3 Fire System Fault Hold Operated

On
General

Memory Lock
Zone 1 Fault / Abort Operated
Disabled / Test Disablement
Zone 2 Fault / Test Flooding Zone Auto Manual
Disabled/ Test Fault / Disabled

Off
Manual

W/Dog Reset Processor Reset Term. Exting.

Zone 3 Fault / Buzzer Silenced Extinguishant
Disabled / Test Disablement
Extinguishant Release
Sounder Fault Delay Active Pull Down - Push Button Low Pressure

Sounder Disabled Extract Fan On Manual Release

Control Panel Fascia

The Control Panel fascia is laid out in sections making it easier for the user to interpret the information displayed:

Alarm status
Provides all indications relating to alarm status as well as fault, disable and test status of detection and sounder cir-
cuits.

General status
Provides common status indications relating to the general Panel condition such as Power Fault, General Fault, Sys-
tem Fault etc.

Extinguishant status
Provides all indications relating to the status of the extinguishant control section of the ZXT covering activations,
fault status and disablements.

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LED Indications
LED indications are provided to indicate the status of the ZXT Control Panel. The LEDs are supplemented by the
addition of an LCD which provides further detailed status information. LEDs provided and their function are de-
scribed below.

Alarm Status Indications

Fire - Red LED indicating an active fire event on the Panel with multiple states:

LED Status Description

Flashing red Indicates an unacknowledged zonal alarm and will be accompanied by the relevant zonal fire LED.
(Accompanied by
zone fire LED)

Steady red Indicates an acknowledged zonal alarm, silence alarms has been pressed silencing 1st stage
(Accompanied by sounders (S1 & S2).
zone fire LED)

Zone Fire - Three Red LEDs indicate an alarm is active on a particular detection zone:

LED Status Description

Flashing red Indicates an unacknowledged alarm condition in the identified zone.

Steady red Indicates an acknowledged alarm condition in the identified zone (“Silence Alarm” pressed).

Zone Fault/Disabled/Test - An amber LED which is used to indicate multiple states of zone functionality:
LED Status Description

Flashing amber Indicates an active fault condition on the indicated zone i.e. open circuit, short circuit, detector head
(accompanied by the removed.
General Fault LED)

Steady amber Indicates the zone is disabled.

(accompanied by
General Disablement
LED)

Steady amber Indicates the indicated zone is in test mode.

(accompanied by the
Test LED)

Sounder Fault
LED Status Description

Flashing amber Indicates an open or short circuit fault is active on one or more of the sounder circuits.
(accompanied by the
General Fault LED) In the event of such a fault the LCD will provide further detailed information on which sounder circuit
is in fault and the nature of the fault i.e. Sounder 1 - Open circuit.

Sounder Disabled

LED Status Description

Steady amber Indicates that one or more of the sounder circuits have been disabled and are not functional.
(accompanied by the
General Disablement This is a single LED indicating a generic sounder disablement which is complemented by further
LED) detailed information on the LCD. LCD will indicate which sounder circuit(s) are disabled.

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General Status Indications

Power On

LED Status Description

Steady green Indicates that the panel is in the on state i.e. power is supplied to the panel.

Power Fault

LED Status Description

Flashing amber Indicates a failure with the power supplied to the panel.

LCD will provide detailed information on the power fault type i.e. Mains fail, Battery fail etc.

General Fault

LED Status Description

Flashing amber Indicates an active fault is present on the panel, this will generally be accompanied by indication of
a specific fault type LED i.e. Zone fault, Sounder fault etc.

LCD will also provide additional fault information.

System Fault

LED Status Description

Flashing amber Indicates one or more of the following internal faults:

Configuration data fault (memory corrupt)

Language data fault (memory corrupt)

Steady amber CPU fault/watchdog time-out.

Detailed information on the fault type will be provided on the LCD.

Note: An active system fault will place the control panel into SAFE MODE. In SAFE MODE a panel
cannot activate an extinguishing release. The message "Sys fault” (SAFE MODE) will be displayed
on the LCD.

General Disablement
LED Status Description

Steady amber Indicates an active disablement is present on the panel, this will generally be accompanied by indi-
cation of a specific disablement type LED i.e. Zone Disabled, Sounder Disabled etc.

LCD will also provide additional disablement information.

Test

LED Status Description

Steady amber Indicates that one or more detection zones are in test mode. It will be accompanied by the relevant
zone test LED indicating steady amber. Test status will also be displayed on the LCD.

Buzzer Silenced
LED Status Description

Steady amber Indicates that the panels buzzer has been silenced by pressing of the “Silence Buzzer” button.
Silence buzzer function is only available during active alarm or fault events.

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Delay Active

LED Status Description

Steady amber Indicates that a programmed delay has been configured in relation to sounder S1 & S2 operation.
The panel will indicate an alarm condition but will not operate the sounder outputs until the pro-
grammed delay time has elapsed.

Extract Fan On

LED Status Description

Steady amber Illuminates when any output programmed as an extract output becomes active.

Extinguishing Status Indications

Pre-Activated/Activated

LED Status Description

Flashing red Pre-Activated - Indicates that the extinguishing release is at 1st stage.

Steady red Activated - Indicates that the extinguishing release is at 2nd stage with gas release imminent; i.e.
multiple detection zones in alarm or manual release activated.

Reserve Selected

LED Status Description

Steady amber If the extinguishing Panel has been configured to support a main and reserve extinguishing system
this LED will illuminate when the Reserve system is selected.

Released

LED Status Description

Steady red Illuminates when the release of extinguishant has been confirmed.

Hold Operated

LED Status Description

Steady amber Illuminates when the Hold circuit has been activated.

Abort Operated

LED Status Description

Steady amber Illuminates when the Abort circuit has been activated.

Flooding Zone Fault/Disabled

LED Status Description

Flashing amber Indicates a fault on any of the following circuits:

Abort, Hold, Manual Release, Mode, Released, Low pressure, RS485 comms, Sounder S3 and
Sounder S2 if configured as an extinguishing output.

Steady amber Indicates that any of the following circuits have been disabled: Abort, Hold, Manual Release, Mode,
Released, Low Pressure, RS485 comms, Sounder S3 and Sounder S2 if configured as an extin-
guishing output. It will also illuminate if the “DIS EXT” input is active.

Extinguishant Disabled
LED Status Description

Steady amber An amber LED indicating that the extinguishing function of the Panel has been disabled.

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Low Pressure

LED Status Description

Steady amber Illuminates when the Pressure Switch connected to the input activates, indicates either of the follow-
ing states:

- Leak on the extinguishing cylinder causing a drop in cylinder pressure.

- Cylinders empty following a successful discharge.

The Low Pressure LED will be accompanied by the Flooding Zone Fault LED.

Manual Release

LED Status Description

Steady red Illuminates when the Manual Release circuit has been activated indicating a manual activation of
the extinguishant release system. This is triggered by either the Manual Release button on the
Panel fascia or status indicator or an Extinguishant Release Call Point connected to the Man
Release input.

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Liquid Crystal Display (LCD) Indications

Sigma ZXT features a 128 x 64 pixel LCD providing 8 lines x 21 characters enabling further alarm and fault indication
to be displayed.

The LCD has a 5 colour LED back-light which is used to provide easy visual status of access levels, fault or alarm
conditions when set to Dynamic. This setting is found in Access Level 3 user settings and has two options “White”
or “Dynamic”:

Dynamic Displays
The following figures show examples of LCD information for various states:

Figure 4-2
Normal Condition - Green

****SYSTEM status****
jan 01 2019 04:00:15*
(manual & auto)
system normal

x EVENTS CONTROLS
Figure 4-3
Access Level 2 - Turquoise

*****user menu*****
>view active events..
event log functions..
test zones
enable/disable..
sounder delay..
date and time..
Xback GOTO MENU

Note: Access Level 2 screen will be turquoise if no faults or alarms are active. If active faults or alarms are present the screen
will remain in the colour associated with the active event.

Figure 4-4
Access Level 3 - Blue

****ENGINEER menu****
>CONNECTED DEVICES..
SYSTEM SETTINGS..
USER SETTINGS..
CIE ZONE SETTINGS..
ECD SETTINGS..
PROG I/P settings..
xback goto menu

Note: Access Level 3 screen will be turquoise if no faults or alarms are active. If active faults or alarms are present the screen will
remain in the colour associated with the active event.

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Figure 4-5
Fault, Disabled or Test Condition – Yellow

TUE 01 JAN 2019 11:21:34

z1 1 IN1
open ciruit

Xevents controls

*panel sounders disable*

disable all:no
>sounder1:disabled
sounder2:enabled

S1 DISABLED

*****SYSTEM STATUS*****
TUE 01 JAN 2019 11:00:15
(MANUAL & AUTO)
ZONE IN TEST:1

xEVENTS cONTROLS

Figure 4-6
Fire Condition
The screen will be red with details of which zone or circuit has triggered the fire condition:

TUE 01 JAN 2019 02:55:28

Z3 ALARM 1 IN1
ZONE 3

xEVENTS cONTROLS

If an extinguishing release delay has been programmed the screen will flash red during the countdown process while
displaying the countdown timer:

***extinguisher status***
2nd stage
ACTIVATED !!
26 S TO RELEASE

xEVENTS

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Figure 4-7
Released condition
Once the countdown timer has completed and the extinguishant has been released the screen will be steady red
and will show the discharged confirmation message along with the duration timer counting down the time the extin-
guishing output remains active.

***EXTINGUISHER STATUS***
DISCHARGING
58 s REMAINING

xEVENTS

Note: The contrast of the LCD can be adjusted through the “User Settings” menu – Access Level 3.

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User Controls
Sigma ZXT user controls consist of an LCD navigation keypad, push buttons and key-switches.

LCD Navigation Push Button

The LCD Navigation Push Button Cluster enables the user to operate menu functions. Up and down can navigate
the menus, left and right can be used to scroll through the various settings associated with a menu option. Push
buttons either side perform other functions (described in the table below).
Figure 4-8
Navigation Push Button Cluster

2 3

ID Key Function
1 Navigation push-button Navigates LCD menu options up, down, left, right.

2 ‘X’ push button As primary function the ‘X’ button allows the user to go back screens. The ‘X’ will also per-
(Lamp Test) form other functions relating to corresponding LCD information.

The ‘X’ button has a secondary function; when pressed it will test the fascia LED’s by illu-
minating them simultaneously.
3 Enter push button Enables selection of the required menu option and settings.

Silence Buzzer
An audible warning is provided at the Panel when various status conditions i.e. alarms, faults etc. Pressing the Si-
lence Buzzer push-button will stop the buzzer sounding and illuminate the “Buzzer Silenced” LED.
Figure 4-9
Silence Buzzer Push-Button

Silence Alarm
In an alarm condition the Sounder circuits S1 and S2 will be active and any audio/visual devices connected to these
circuits will sound warning tones to notify occupants. Pressing the Silence Alarm push-button will cease the opera-
tion of the S1 and S2 Sounder circuits and the associated warning devices.
Figure 4-10
Silence Alarm Push-Button
Note: Silence alarm function is only applicable to S1 and S2 sounder circuits.
2nd stage extinguishant release sounders (S3) cannot be silenced.

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Alarm Re-sound
If Sounder circuits S1 and S2 alarms have been silenced pressing this push-button will re-activate them.
Figure 4-11
Alarm Re-Sound Button

Note: If sounder circuit S2 is configured as an Extinguishing Output, this

push-button will have no effect on the S2 output.

Reset
Pressing this push-button will clear any alarm or fault conditions, returning the Panel to its normal status, providing
the alarm or fault condition is no longer active. If an alarm or fault is still active when the reset push-button is pushed,
the Panel will return to the original alarm or fault state.
Figure 4-12
Reset Button
Note: Following extinguishant release, the Reset function can be inhibited for a pre-programmed
time period, see Configuration section of this manual.

Important: Reset button will have no effect if countdown to release is in process.

Manual Release
Enables manual activation of the extinguishant release process.
Figure 4-13
Manual Release

Manual
Extinguishant Release
Pull Down - Push Button

A yellow flap covers the Manual Release push-button to prevent accidental operation. To access the red push but-
ton, pull down the flap.

Figure 4-14
Manually Activating the Extinguishant Release Process

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Control Key-Switches
Control key switches are located within the Controls section of the fascia. Control key-switches are operated using
the keys supplied (901).
Figure 4-15
Control key-switches
Enable

Auto Manual

Enable Key-Switch
Two position access level key-switch. In the “Enable” position the Panel will enter Access Level 2 and display the
Level 2 menu options on the LCD.

Auto/Manual Key-Switch
Two position key-switch which selects between “Auto” or “Manual” activation of the extinguishant release system.
Two amber LED’s provide indication of the current state as well as notification on the LCD.

In “Auto” mode activation of the extinguishing release can be triggered by a combination of the automatic detection
zones or by operation of the Manual Release Push Button or Manual Release Call Point.

In “Manual” mode the extinguishing release can only be triggered through manual intervention i.e. operation of a
Manual Release Push Button on the Panel/status indicator unit or operation of a manual release call point. Automatic
detection zone alarms will not activate the extinguishing release system when in manual mode.

Important! Switching between Auto and Manual modes can only be done using the same key-switch i.e. If manual
mode is set using the control panel key-switch it can only be returned to auto using the same control panel key-
switch, all other auto/manual key-switches on the system will be rendered non-functional.

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Internal Indicators and Controls

Some internal controls and indications are provided on the ZXT which are only accessible to persons with a Panel
door key. The following controls and indicators are located on the right-hand side of the Control Panel fascia in a
vertical orientation.
Figure 4-16
Internal Indications and Controls

Alarm General Extinguishant Controls

Power On Pre-activated/ Enable
Activated

Zone 1 Fire Power Fault Reserve Selected

Zone 2 Fire General Fault Released

Zone 3 Fire System Fault Hold Operated

On
Zone 1 Fault / General

Memory Lock
Disablement Abort Operated
Disabled / Test
Zone 2 Fault / Test Flooding Zone Auto Manual
Disabled/ Test Fault / Disabled

Off
Zone 3 Fault / Extinguishant

W/Dog Reset Processor Reset Term. Exting.

Buzzer Silenced
Disabled / Test Extinguishant Release Disablement
Pull Down - Push Button
Sounder Fault Delay Active Low Pressure

Sounder Disabled Extract Fan On Manual Release

W/Dog Reset Processor Reset Term. Exting. Memory Lock

Off On

Watchdog Reset
This internal LED will illuminate when a failure occurs with the processor controlling the Panel.

If for any reason the microprocessor in the Panel fails to carry out its operation correctly, it will attempt to perform a
self-reset. This process is called a “Watchdog” and the Control Panel must record and indicate these events.

When a watchdog event occurs, the Control Panel will show the “General Fault” and “System Fault” LEDs on the
Panel fascia. A system fault can only be reset by pressing the internal “Processor Reset” button.

Processor Reset
The ZXT is designed to monitor the functionality of its internal processor and indicate any errors, these will be iden-
tified as a system fault on the Control Panel fascia. The Processor Reset push-button performs a reboot on the pro-
cessor circuit to attempt to clear the associated issue.

Note: The push-button is inconspicuous and an instrument approximately 3mm in diameter (such as a small screw-
driver) should be used to activate.

A processor reset should not normally be necessary but should be done as a matter of course if the system is be-
having abnormally. The system should resume normal operation within a couple of seconds of pressing the Proces-
sor Reset button.

Term. Exting. (Terminate Extinguishing)

An extinguishing system can be programmed with a release duration time, this is how long the extinguishing output
remains active once triggered. This button allows the user to stop an extinguishant release while it is in the discharg-
ing (release duration) stage.

Note: The push-button is inconspicuous and an instrument approximately 3mm in diameter (such as a small screw-
driver) should be used to activate.

Memory Lock
This is a slide switch which enables and disables the ability to save and store Panel configuration changes made at
Access Level 3 to the Panel’s memory.

In the ON position the Panel memory is locked which will prevent any configuration changes being saved to memory.
In the OFF position the Panel memory will be unlocked allowing configuration changes to be saved.

ZXT has been designed so it can be used with the Kentec LE2 programming software, to upload and download con-
figurations and event logs. To successfully achieve an upload or download this switch must be in the memory lock
off position.

Mini USB Connector

This enables connection of a PC running LE2 configuration software. LE2 configuration software allows program-
ming of panel settings as well as upload/download of config files and download of event logs.

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 Panel Configuration 5

Section 5
Panel Configuration
Configuration and interrogation of the Sigma ZXT is performed using the menu structure that appears on the LCD
and user Control buttons on the Panel fascia.

Access Levels
Sigma ZXT has three access levels:

Access Level Passcode

1 None

2 passcode1: 11111
passcode2: 22222
passcode3: 12121
passcode4: 44444
Enable keyswitch

3 (Engineering) 33333

Access Level 1
No Passcode required and no configuration options are available at Access Level 1. Access Level 1 is restricted to
the viewing of Panel status and active events through the LED indications and LCD. The Lamp Test feature is also
available at Access Level 1.

*****SYSTEM STATUS*****
WED 01 JAN 2020 03:45:42
(MANUAL & AUTO)
SYSTEM NORMAL

xevents controls

Press the ‘X’ button on the fascia:

**ACTIVE EVENTS SUMMARY**

>alarms : 0
FAULTS : 0
DISABLEMENTS : 0
ACTIVE EVENTS SUMMARY
OTHER EVENTS : 0

xBACK VIEW
This screen shows a snapshot of how many active events exist on the Panel. These
can be Alarms, Faults, Disablements or Other Events.
The up and down arrow buttons can be used to scroll between the event types. When
an active event type is highlighted, pressing the Enter button on the fascia will display
further detail regarding the event(s).

The operation of the fascia LED indicators can be tested by pressing and holding the
Lamp Test (X) button. Press and hold the button for at least 3 secs, all LEDs will illumi-
Lamp Test (X)
nate, the panel buzzer will sound and the LCD will cycle between red, blue and green
colour screens. Release the button to end the lamp test.

In normal status the Enter button is identified by the text CONTROLS on LCD, press-
ing the button in this state displays the Passcode entry screen.
Enter button ( )
In the active EVENTS SUMMARY SCREEN, the Enter button is identified with the text
VIEW this allows active events to be selected and further status details to be dis-
played.

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Access Level 2
This level is accessed by entering the Passcode or by operation of the enable key-switch. To enter Access Level 2
by Passcode press the controls button and the Passcode Entry screen will appear.

Figure 5-1
Passcode Entry Screen

****passcode entry****
1
4 2 *****
3

xback login

Four user passcodes are provided for access to level 2 which can be allocated to different users. The event log will
provide a record which users have logged in and when.

Default passcodes for access level 2 are as follows:

passcode1: 11111
passcode2: 22222
passcode3: 12121
passcode4: 44444

The passcodes can be changed to suit using LE2 configuration software.

Level 2 enables access to the following user functionalities: Test, Disablement, Event log functions, Sounder delays,
Date and Time and level 3 access.

VIEW ACTIVE EVENTS.. Selecting this option displays the ACTIVE EVENTS SUMMARY screen.

EVENT LOG FUNCTIONS.. This option accesses the event log, selecting this option will initially show the text "Display on screen".

The method of displaying events cannot be changed from DISPLAY ON SCREEN.

Press enter to view the event log, two events will be shown on the screen at a time. The up/down
arrow buttons can be used to scroll through the event log. The left/right arrows can be used to filter the
event types you wish to view.

Select the event type to be filtered shown at the top of the screen and press enter button.

Event filter options are as follows:

ALL EVENTS
FIRES
FAULTS
DISABLEMENTS
OTHER EVENTS

The event log will store up to 999 events and once full will replace the oldest event with the
newest. This screen also shows the alarm counter i.e. the number of alarms that have
occurred on the panel.

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This option enables the user to put automatic detection zones into Test Mode during commission-
ing or system servicing, which prevents the system from triggering its cause and effect.

Selecting this option displays the following sub menu:

******TEST ZONES******
TEST ZONES.. >SOUNDER:OFF
ZONE 1:NORMAL
ZONE 2:NORMAL
ZONE 3:NORMAL
XBACK CHANGE

This option enables the 1st stage sounders S1 and S2 to be turned off while in test mode allow-
ing an engineer to put the test zone into alarm without triggering the Panel Sounder circuits. The
SOUNDER option is either ON or OFF; ON will trigger the Sounder outputs when the zone under test is put
into alarm; OFF will prevent the Sounder outputs from operating when the zone under test is put
into alarm.

Three detection zones are provided and any of these zones can be placed into test mode. Use
the up/down buttons to select the zone to put into test and then use the left/right buttons to tog-
gle between NORMAL and IN TEST.

When a detection zone is placed into test the LCD will display the test status while the general
test and relevant zone test LEDs illuminate on the Panel fascia.

The main screen will display the zone(s) in test:

ZONE ‘n’ ******TEST ZONES******

SOUNDER:OFF
>ZONE 1:in test
ZONE 2:NORMAL
ZONE 3:NORMAL
XBACK CHANGE

Once testing has been completed the zone should be returned to the NORMAL setting.

ENABLE/DISABLE.. This menu option opens the ENABLE/DISABLE menu allowing the user to enable and disable
various functions on the panel.. Disablement of a function prevents it from operating this can be
used during maintenance or servicing periods preventing the risk of accidentally triggering the
system.

If configured as a dynamic display the LCD will turn yellow when an active disablement exists.

This sub-menu allows the enablement and disablement of automatic detection zones. The zone
to be disabled should be highlighted using the up/down cursor. When the relevant detection
zone is highlighted the left/right buttons can be used to toggle between the enabled and disa-
CIE ZONES.. bled states.

When a detection zone is disabled the “General Disablement” LED and relevant zone disabled
LED indicators illuminate. Details of the disablement event can be viewed on the LCD.

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The number of options available in this menu will vary dependent on other configuration settings.
Two options will always be present EXTING RELEASE and ALL MAN RELEASE, a third menu
option EXTRACTOR will be visible if the panel has an output configured to switch on an extract
fan:

**ECD SUBSYS DISABLE**

>EXTING RELEASE:ENABLED
EXTRACTOR:ENABLED
ALL MAN RELEASE:ENABLED

XBACK CHANGE

EXTING RELEASE
This feature enables or disables the extinguishing output function, while in “DISABLED” mode
the Panel will not activate the extinguishing output. Alarm actions will follow the normal
sequence, activating sounders etc. but will not operate the extinguishing output (EXTING.). The
ECD SUBSYSTEM..
menu option can be toggled between Enable/Disable state using the left/right buttons. When
extinguishing release is disabled the Extinguishant Disablement, Flooding Zone Fault/Disabled
and General Disablement LEDs will be illuminated. Any relay outputs configured for "Release
Disabled" or "On General Disablement" will also operate. LCD will provide additional info on
active.

Note: The Disable Exting Release function will not be available if a 2nd stage alarm release
imminent state is active.

EXTRACTOR
This feature enables or disables any output that has been configured as an extract output. The
menu option can be toggled between Enable/Disable states using the left/right buttons. When
the option is disabled the “General Disablement” LED will illuminate and any relay output pro-
grammed as "On General Disablement" will operate.

ALL MAN RELEASE

Disables all manual release push-buttons and inputs. This prevents the panel from being acti-
vated by a Manual Release push-button on the Control Panel or Status Indicator, also prevents
activation from a manual release input. When disabled the “General Disablement” and “Flooding
Zone Fault/Disabled” LED will be illuminated. Any relay programmed as "On General Disable-
ment" will operate. Additional info on active disablements will be provided on the LCD.

This function allows the enablement and disablement of the 1st stage Sounder circuits S1 and
S2. Sounders can be enabled or disabled individually or as a group as shown in the screen shot
below:

**panel sounders disable**

>disable all:no
sounder1:ENABLED
sounder2:ENABLED

SOUNDERS.. XBACK CHANGE

The status of each of the listed menu options can be toggled between enable/disable states
using the left/right buttons.

Disablement of the Sounders will prevent the Sounder circuits from activating in an alarm condition. When
set to DISABLED the GENERAL DISABLEMENT and the “Sounder Disabled” LED indicator will be illumi-
nated, specific details of which sounder circuits are disabled are displayed at the bottom of the LCD.

Note: Sounder circuit S2 will not appear in this list if it has been programmed as an extinguishing output.

Note: To comply with the requirements of EN12094-1 2nd stage sounders S3 cannot be disabled unless the
extinguishing system is also disabled. Therefore the option to disable Sounder 3 (S3) will only appear in
this menu when the extinguishing system is disabled.

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This menu allows enablement and disablement of any of the relay outputs provided on the Con-
trol Panel. A disabled relay output will not activate even if the state it relates to is active. The
screen shot shows the menu feature and the relays available:

***panel relays disable***

>fire relay:enabled
fault relay:ENABLED
release relay:ENABLED
RELAYS..
mode relay:ENABLED
hold relay:enabled
abort relay:enabled
XBACK CHANGE

The status of each of the listed menu options can be toggled between ENABLE/DISABLED
using the left/right buttons. When set to DISABLED the “General Disablement” LED will illumi-
nate and any output configured as “On General Disablement” will operate. Additional info on
active disablements is available on the LCD.

Important! The relay descriptions in this menu are based on the default relay descriptions.
This menu feature allows enablement and disablement of the monitored inputs. A disabled mon-
itored input will not activate the associated event on the Panel even if a trigger device attached to
that input is active. The screen-shot shows the menu feature and the inputs available:

monitored ip disablements
>hold:enabled
abort:ENABLED
man mode:ENABLED
MONITORED INPUTS..
rel pr sw:enabled
lo pr sw:enabled
ext rel ip:ENABLED
XBACK CHANGE

The status of each of the listed menu options can be toggled between ENABLED/DISABLED
using the left/right buttons. Monitored inputs are associated with the extinguishing release sys-
tem therefore, when any of the inputs are disabled the “General Disablement” LED will illuminate
along with the “Flooding Zone Fault/Disabled” LED. Any relay output configured as On General
Disablement will also operate. Additional information on active disablements can be viewed on
the LCD.
This menu feature allows enablement and disablement of the two programmable Panel inputs. A
disabled input will not activate the associated event on the Panel even if a trigger device
attached to that input is active. The screen-shot shows the menu feature and the inputs availa-
ble:

***panel ip disablements***
>prog ip1:enabled
prog ip2:enabled
PANEL INPUTS..

XBACK CHANGE

The status of each of the listed menu options can be toggled between enable/disable states
using the left/right buttons. When an input is disabled the “General Disablement” LED will illumi-
nate and any relay output programmed as “On General Disablement” will operate. Additional
information relating to active disablements can be viewed on the LCD.

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This menu feature can be used to enable a delay in the operation of 1st stage Sounder circuits
S1 and S2.

Note: If S2 is configured as an extinguishant output no delay option will be available for the out-
put in this menu.

******SOUNDER DELAYS******
>SOUNDER 1:IMMEDIATE
SOUNDER 2:IMMEDIATE

SOUNDER DELAY..

XBACK CHANGE

The configured setting of the Sounder outputs can be toggled between IMMEDIATE and
DELAYED. If the outputs are configured for immediate, outputs will operate as soon as a zonal
alarm becomes active. If the outputs are configured as delayed the Sounders will only operate
after a programmed delay period.

Configuration of the delay period can only be carried out at Access Level 3 CIE ZONE SET-
TINGS menu option.

If delays have been configured this will be indicated by the "Delay Active" LED on the panel fas-
cia.

This menu feature enables the setting of the Panels time and date. It is important to ensure the
time and date is accurate for logging of events as this is significant for diagnostics.

******date and time******

>YEAR: 20
month: 1
DAY: 1
DATE AND TIME..
hour: 1
min: 57
XBACK CHANGE

The menu allows setting of Day, Month, Year, Hour and Minutes; the value associated with each
setting can be changed using the left/right buttons. Once settings have been updated, press the
enter button to accept the changes.

This menu option will only be available if one of the panels relay outputs has been programmed
as an extract output used to control an extractor fan/system.

The extractor fan option gives the user manual control over the activation and de-activation of an
extract output.
EXTRACTOR FAN..
Left/right buttons can be used to turn the extractor fan on or off.

If turned on the LCD will display the duration timer counting down. When the countdown timer is
complete the extract output will be turned off.

If manually turned off the countdown timer will disappear.

Opens the Passcode login screen enabling the user to enter the Engineering Menu (access level
ENGINEERING MENU..
3) Passcode.

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Access Level 3 (Engineering)

Level 3 can be accessed through Level 1 passcode entry screen directly, or Level 2 > Engineering Menu option
(passcode required).

Figure 5-2
Access Level 3 Login Options

****passcode entry**** ********USER menu********

TEST ZONES..
1 ENABLE/DISABLE..
4 2 ***** SOUNDER DELAY..
3 DATE AND TIME..
EXTRACTOR FAN..
>ENGINEERING MENU..
xback login XBACK CHANGE

Access Level 3 default Passcode is ‘33333’

Each LCD Navigation button on the fascia panel represents a number with the down arrow representing the number 3.

If the LCD display is configured as ‘dynamic’ it will turn blue in Access Level 3.

Important! Level 3 menu enables full configuration of panel features, it is important to ensure if configuration changes are
made in Access Level 3 that the Memory Lock Switch must be in the OFF position to enable them to be saved.
Any configuration changes made while the Memory Lock switch is in the ON position will not be saved.

The following section addresses each of the menu options available.

This menu relates to ancillary items that can be attached to the Panel such as Status Indicators
and expansion PCBs.

The ZXT provides an RS485 bus for connection of status indicators and ancillary PCBs.

*****CONNECTED DEVICES*****
CONNECTED >REMOTE BUs..
DEVICES..

XBACK goto menu

This menu option provides a visual indication of what devices (status indicators/Ancillary PCBs)
are connected to the Remote Bus and on which addresses. Devices must be logged onto the
panel to be able to monitor them correctly and the display will identify units which are connected
but not logged. The screen also provides the ability to install and remove devices from the sys-
REMOTE BUS..
tem to prevent monitoring faults.

For detailed information on connection installation of status indicators and ancillary boards to the
ZXT, see Section 6.

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SYSTEM SETTINGS.. This menu contains configuration options relating to general system settings.

This option suppresses the operation of any relay output configured as a fire relay. The option
can be toggled between YES and NO settings using the left/right buttons. If the fire relay is sup-
pressed it will not operate during any fire alarm conditions.

Important! If the fire relay is suppressed this is not indicated on the fire alarm panel.
SUPPRESS FIRE RLY
Warning! This option will prevent the panel from signalling a fire condition remotely and should
be used with extreme caution. Suppressing the fire relay does not comply with the requirements
of EN54-2.

Default: NO
This option suppresses the operation of any relay output configured as a fault relay. The option
can be toggled between YES and NO settings using the left/right buttons. If the fault relay is sup-
pressed it will not operate during any fault conditions.

Important! If the fault relay is suppressed this is not indicated on the fire alarm panel.
SUPPRESS FAULT RLY
Warning! This option will prevent the panel from signalling a fault condition remotely and should
be used with extreme caution. Suppressing the fault relay does not comply with the requirements
of EN54-2.

Default: NO

This option configures the operation of the fault relay when multiple faults appear on the system.
Fault relays are generally one shot and no matter how many faults appear the fault relay will only
operate on the first fault condition.

NEW FAULT RLY This feature if configured will allow the fault relay to indicate the activation of a new fault condi-
TOGGLE tion by toggling the relay off and then on again.

The option setting can be configured between YES and NO using the left/right arrow keys.

Default: NO

This option applies a delay to the operation of the fault relay when activated by a mains fault.

For sites that have a generator back-up electricity supply, the delay in activating the Fault Relay
on a mains fault will compensate for the period of time between the mains input failing and the
generator supply activating. This prevents an unnecessary fault being indicated during the
switch-over. The left/right buttons are used to change the setting value between OFF and 30m
(30m = 30 minutes).
MAINS FLT RLY DLY
If this option is activated and the back-up supply does not start after 30m the fault relay will acti-
vate. During this period the Panel will have a sufficient back-up battery supply to continue run-
ning.

Important! Compliance to EN54-2 requires this option to be set to OFF.

Default: OFF
This configuration can be used to turn on or off the earth fault monitoring function. Earth faults
can have a significant effect on the operation of the Panel if undetected.

It is recommended that this function should remain enabled at all times and should only be disa-
DETECT EARTH bled as part of diagnostic investigations. The setting can be toggled between YES and NO by
FAULTS using the left/right buttons.

Important! Compliance to EN54-2 requires this option to be set to YES.

Default: YES

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This option relates to Sounder circuit S2 which can be configured as a second extinguishing out-
put. Using the left/right buttons the option setting can be toggled between SOUNDER and
EXTINGUISHER.

If set to SOUNDER output S2 will operate as a 1st stage Sounder output in conjunction with out-
put S1. If this option is set to EXTINGUISHER output S2 will operate as a second extinguishing
SOUNDER2 OP
output.

Note: When S2 is configured as an extinguishing output it will be referenced as EXT2 in the ECD
settings menu.

Default: SOUNDER
This option configures the ability to drop the AUX 24V output voltage when the reset button is
pressed on the Panel fascia. The left/right buttons are used to toggle between NONE and 3s.

If set to “None” a reset will have no effect on the AUX 24V output. If set to 3s when a reset is per-
AUX24V RESETS
formed the AUX 24V output will be dropped to 0V for 3 seconds, this can act as a reset signal for
devices which are connected to the AUX 24V and require a power cycle to reset.

Default: NONE

The Low Pressure Switch input is configured as default to monitor for a Normally Open pressure
switch which closes on activation. This menu option enables the operation of the Low Pressure
Switch to be inverted for systems which use Normally Closed pressure switches which open on
activation.

INVERT LOW PRESS The option can be toggled between YES and NO determining whether the input operation is
SW inverted or not.

Warning! Changing the input state should never be carried out on a live system as this may trig-
ger an unwanted activation.

Default: NO

The Release Pressure Switch input is configured as default to monitor for a Normally Open pres-
sure switch which closes on activation. This menu option enables the operation of the Release
Pressure Switch to be inverted for systems which use Normally Closed pressure switches which
open on activation.

INVERT REL PRESS The option can be toggled between YES and NO determining whether the input operation is
SW inverted or not.

Warning! Changing the input state should never be carried out on a live system as this may trig-
ger an unwanted activation.

Default: NO

This option relates to the Reset push-button and allows the configuration of the reset action to be
changed. The setting can be toggled between WITH CIE and AFTER CIE.

If the option is set to WITH CIE the detection (CIE) and extinguishing (ECD) sections will reset
simultaneously when the Reset push-button is pressed.
RESET ECD
If the option is set to AFTER CIE, when a reset is performed the detection (CIE) section of the
panel will be reset but the extinguishing control part of the panel (ECD) will remain active. A sec-
ond reset will be required to reset the extinguishing part of the panel (ECD).

Default: WITH CIE

This option turns on or off the facility of the panel to monitor its inputs in compliance with the
requirements of EN54-13 for weak open and short circuits.

Currently this function is not active within the panel, the panel will monitor its inputs as required
EN54-13 MONITORING..
for open and short circuits but not to the requirements of EN54-13.

The setting of this feature has no effect at this time and will be implemented at a later date.

Selecting this option displays the firmware screen. The screen displays the current firmware ver-
FIRMWARE..
sion, it also shows the checksum associated with that firmware.

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USER SETTINGS.. This menu contains configuration options associated with the general user set-up of the Panel.
Details of the options in this menu are as follows:

The LCD can be configured as either “DYNAMIC” or “WHITE”. If the dynamic option is selected
the LCD will change colour depending on the active state of the Panel ie:

Normal: Green
Access Level 2: Turquoise
Access Level 3: Blue
Fault: Yellow
Test: Yellow
LCD BACKLIGHT
Disablement: Yellow
Fire: Red
Release countdown: Flashing red
Released: Red

If the option is set to “WHITE” the LCD will not change colour regardless of Panel state.

Default: DYNAMIC

This option allows the adjustment of the LCD contrast. Using the left/right buttons the value can
be set between 0-10, 0 is the lightest contrast and 10 is the darkest.
LCD CONTRAST
Default: 5

This feature provides the facility to have an audible indication of the access level. If the option is
OFF no audible indication is provided, if the option is ON audible indications are as follows:

Access level 1 -No beep

Access level 2 - 2 beeps approx every 5 secs
ACCESS LEVEL BEEP
Access level 3 - 3 beeps approx every 5 secs

The option setting can be toggled between ON and OFF using the left/right buttons.

Default: OFF

This option selects the access level at which the Silence Buzzer button can be used. The left/
right buttons can be used to toggle the associated value between 1 and 2, if 1 is selected the
Silence Buzzer button can be operated at level 1.
BUZZER SIL LEVEL
If the value is set to 2 the Panel will need to be in Access Level 2 before the Silence Buzzer but-
ton can be used.

Default: 1

This option suppresses the operation of the panel buzzer. Using the left/right buttons the function
can be toggled between YES and NO.

If set to NO the panel buzzer will provide audible indications for fire and fault status.

If set to YES the buzzer will no longer function, regardless of panel state. No indications are pro-
vided of the buzzer state.
SUPPRESS BUZZER
Default: NO
To comply with EN54-2 requirements, this option must be set to NO.

Warning! This option will prevent the panel from providing a local audible status indication and
should be used with extreme caution. Suppressing the panel buzzer does not comply with the
requirements of EN54-2.

This option configures how the Panel handles time changes relating to daylight saving. Using the
left/right buttons the option value can be toggled between “AUTO” and “OFF”.

If configured to “AUTO” the Panel will automatically adjust its time setting in line with daylight
DAYLIGHT SAVING
saving changes. If set to “OFF” the Panel will require manual adjustment of its time setting when
daylight saving changes are required.

Default: AUTO

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 Panel Configuration 5

This allows the user to set the month when daylight saving starts. This is to support daylight sav-
ing in different countries.
DLS start month
Default: Mar

This allows the user to set the week of the month when daylight saving starts - 1st, 2nd,3rd, 4th
or last. This is to support daylight saving in different countries.
DLS start week
Default: Last

This allows the user to set the month when daylight saving ends. This is to support daylight sav-
ing in different countries.
DLS end month
Default: Oct

This allows the user to set the week of the month when daylight saving ends - 1st, 2nd,3rd, 4th or
last. This is to support daylight saving in different countries.
DLS end week
Default: Last

ZXT panels are provided with two language options, which are English and Local. Local lan-
guage relates to the alternative language translation provided in the panel i.e. German, French
LANGUAGE etc. The Local language will be specified at time of order.

Left/right buttons can be used to select between English and Local options.

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 Panel Configuration 5

CIE ZONE SETTINGS.. This menu provides all the configuration options associated with CIE (Control and Indicating
equipment) detection zones.

The detection zones are individually configurable however the configuration settings for each
zone are identical.

This first line is the user description text, press enter or right buttons to enter edit mode and the
first letter will be highlighted.
CONFIGURE ZONE ‘n’
Use the up/down buttons to change the highlighted character and use the left/right buttons to
move to the next character to change. 22 characters of description text can be added for each
zone.

This option enables a delay value to be set for Sounder circuits 1 and 2 in relation to the selected zone.

The delay will only be active when the related zone goes into alarm. A delay can be set between
0 and 10 minutes in 30 sec increments. To set the value use the left/right buttons. This option
DELAY SOUNDER
also requires the Sounder delay setting (Access Level 2) to be set to “DELAYED”.
1&2
Note: The delay will not be applicable to circuit S2 when it is configured as an extinguishing output.

Default: 0s

Zones 1 and 2 are non-configurable for this setting and are locked as latched. Zone 3 can be
configured as latching or non-latching.

Non-latching zones will automatically clear to their normal state once an active fault or alarm has
been removed. Latching zones will remain in alarm or fault condition even if the cause of the
condition has been rectified, and can only be cleared by performing a Panel reset.
LATCHING
The left/right buttons toggle the setting between YES and NO.

Important! Compliance to EN54-2 requires this option to be set to YES.

Default: YES

This option controls the operation of sounder circuits S1 & S2 when an alarm is activated on a
detection zone.

The sounders can be set for “NORMAL” or “SILENT” operation using the left/right buttons to tog-
gle the setting.

NORMAL - Sounders will activate as required whenthe zone is in alarm.

SOUNDERS
SILENT - In silent mode the panel will indicate the alarm condition and will operate any alarm
relay outputs but will not activatethe sounder outputs S1 & S2.

Note: This function will not be applicable to circuit S2 when it is configured as an extinguishing output.

Default: NORMAL

This option configures the zone to trigger either a fault or an alarm condition when a short circuit occurs on
the zone.

The left/right buttons toggle the setting between “FAULT and “FIRE”.

SHORT CCT Important! Compliance to EN54-2 requires this option to be set to FAULT.

Warning! Short circuit triggering of an alarm condition does not comply to EN54-2 and should
be used with extreme caution.

Default: FAULT

This option configures a verification delay on the zone. A verification delay will wait for a pro-
grammed period of time before it activates the alarm condition, this ensures this is a constant
alarm and not a spurious signal.
VERIFY DELAY The left/right buttons can be used to adjust the setting, this can be OFF or can be set between 5
and 30 secs in 5 sec increments.

Default: OFF

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 Panel Configuration 5

This option configures the zone for use with intrinsically safe detection devices. To use intrinsi-
cally safe detection devices the circuit must be fitted with a suitable safety barrier which impacts
the open and short circuit monitoring of the zone.

By setting this option to “YES it will adjust the monitoring capabilities of the circuit to accommo-
I.S. BARRIER
date for the barrier.

The left/right buttons toggle the setting between “YES” and “NO”

Default: NO

ECD SETTINGS.. The ECD settings menu contains configuration relating to the extinguishing control device which
controls and monitors the extinguishing release function of the Control Panel.

This option configures the zone activations required to trigger the gas release only, there are
nine selectable combinations:

Z1 ONLY
This will trigger the gas release sequence when an alarm is active on detection zone 1 only.

Z2 ONLY
This will trigger the gas release sequence when an alarm is active on detection zone 2 only.

Z3 ONLY
This will trigger the gas release sequence when an alarm is active on detection zone 3 only.

ANY 1
This will trigger the gas release sequence when any single detection zone alarm has an active
alarm.

Z1 & Z2
This setting provides coincidence detection, an alarm must be active on both detection zones 1
ACTIVATE ON and 2 to initiate the extinguishing release sequence.

Z1 & Z3
This setting provides coincidence detection, an alarm must be active on both detection zones 1
and 3 to initiate the extinguishing release sequence.

Z2 & Z3
This setting provides coincidence detection, an alarm must be active on both detection zones 2
and 3 to initiate the extinguishing release sequence.

ANY 2
This setting provides coincidence detection, an alarm must be active on any two of the three
detection zones provided to initiate the extinguishing release sequence.

ALL 3
This setting provides coincidence detection, an alarm must be active on all three detection zones
1 to initiate the extinguishing release sequence.

Default: Z1 & Z2

This option configures the operation of the hold input circuit in a fault condition.

The left/right buttons will toggle the setting between “HOLDS ALSO” and “FAULT ONLY”.

HOLDS ALSO
If a fault exists on the hold input circuit the Panel will indicate a fault condition but will also acti-
vate the hold condition preventing the possibility of an extinguishing release.
HOLD FAULT
FAULT ONLY
If a fault exists on the hold input circuit the Panel will indicate a fault condition only. The extin-
guishing system will continue to operate as normal.

Important! Compliance to EN12094-1 requires this option to be set to HOLDS ALSO.

Default: HOLDS ALSO

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This option configures the operation of the abort input circuit in a fault condition.

The left/right buttons will toggle the setting between “ABORTS ALSO” and “FAULT ONLY”.

ABORTS ALSO
If a fault exists on the Abort Input circuit the Panel will indicate a fault condition but will also acti-
vate the abort condition preventing the possibility of an extinguishing release.
ABORT FAULT
FAULTS ONLY
If a fault exists on the Hold Input circuit the Panel will indicate a fault condition only. The extin-
guishing system will continue to operate as normal.

Important! Compliance to EN54-2 requires this option to be set to ABORTS ALSO.

Default: ABORTS ALSO

This option controls the activation of the “Released” confirmation LED and when it illuminates.

The left/right buttons will toggle the setting between “SW or EXT OP” and “REL SW ONLY”.

SW or EXT OP
The released LED will illuminate either on activation of the released pressure switch input or for
systems with no release pressure switch it will operate when the extinguishing output is acti-
REL LIT BY
vated.

REL SW ONLY
If selected, the released LED will only illuminate if the Released Pressure switch input is acti-
vated.

Default: SW or EXT OP

Following an extinguishing release it is possible to prevent the Control Panel from being reset for
a programmed period of time. This option configures the period of time by which the reset func-
tion will be inhibited.
RESET INHIBIT
The left/right buttons are used to change the setting value from 0 to 30m in 1 minute incre-
ments.

Default: 1m

Note: If S2 is configured as a sounder output and the extinguishing system is configured for common operation of the extin-
guishing outputs, it is possible to configure independent extinguishing delays for the S2 extinguishing output. The delay set-
tings listed below will be duplicated and will be identified with the suffix EXT 1 for the main extiguishing output and EXT 2 for
the S2 Extinguishing output.

This option configures the delay period between a release activation and operation of the extin-
guishing output i.e. countdown to gas release when triggered by a manual release device.

The delay is configurable between 0 and 60 secs in 1 sec increments using the left/right buttons.

When active the release delay countdown will be visible on the LCD providing notification of time
RELEASE DELAY MAN until an extinguishant release.

Important! If using the ZXT with Sigma SI status indicators the delay time must be set to a mul-
tiple of 5 i.e. 5s, 10s, 15s etc. as Sigma SI status indicators will not recognise delay settings that
are not a multiple of 5.

Default: 30s

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 Panel Configuration 5

This option configures the delay period between a release activation and operation of the extin-
guishing output i.e. countdown to gas release when triggered by an automatic detection
device(s).

The delay is configurable between 0 and 60 secs in 1 sec increments using the left/right buttons.

RELEASE DELAY When active the release delay countdown will be visible on the LCD providing notification of time
AUTO until an extinguishant release.

Important! If using the ZXT with Sigma SI status indicators the delay time must be set to a mul-
tiple of 5 i.e. 5s, 10s, 15s etc. as Sigma SI status indicators will not recognise delay settings that
are not a multiple of 5.

Default: 30s

This option configures how long the extinguishing output remains active once triggered, this will
be dependent on the solenoid type used.

The left/right buttons allow the adjustment of the setting from 60 - 600 secs in 5 sec increments
or the setting can be infinite so the output remains permanently active until the system is reset.
RELEASE DURATION
Important! When setting the release duration it is important to take into consideration the speci-
fication of the extinguishing solenoid output - Max 1A continuous or 3A for 50ms.

Default: 60s

This menu setting will only appear when the ZXT is configured with Sounder S2 as a second
extinguishing output.

The EXT 1 release time is the length of time the primary extinguishing output (Exting.) remains
active, this can be set from 60 - 600 secs or as infinite (i.e. permanently active until panels reset).
EXT 1 RELEASE TIME
The left/right buttons are used to change the setting value from 60 - 600 secs in 5 sec incre-
ments, or you can scroll through to INFINITE.

Default: 60s

This menu setting will only appear when the ZXT is configured with Sounder S2 as a second
extinguishing output and extinguishing outputs are set as common operation.

The EXT 2 release time is the length of time extinguishing output 2 (S2) remains active, this can
be set from 60 - 600 secs or as infinite (i.e. permanently active until panels reset).
EXT 2 RELEASE TIME
The left/right buttons are used to change the setting value from 60 - 600 secs in 5 sec incre-
ments, or you can scroll through to INFINITE.

Default: 60s

This menu setting will only appear when the ZXT is configured with Sounder S2 as a second
extinguishing output and extinguishing outputs are set as common operation.

The EXT 2 release delay enables an extended delay to be configured for the second extinguish-
ing output (S2), this allows the second extinguishing output (S2) to be operated after the opera-
EXT 2 RELEASE
tion of the primary extinguishing output. This delay will only start once the "Release Delay Auto"
DELAY
or the "Release Delay Manual" has completed.

The left/right buttons are used to change the setting value from 0-60 secs.

Default: 30s

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 Panel Configuration 5

Extinguishing outputs are monitored for short circuit and open circuit faults, to do this the panel
must be calibrated to the resistance of the solenoid.

This option will automatically calibrate the extinguishing output circuit by highlighting the menu
option and pressing enter, a confirmation message will appear at the bottom of the screen EXT
OP CALIBRATED.
CALIBRATE EXT ‘n’
If output S2 is configured as a second extinguishing output then two calibrate options will be
available:

CALIBRATE EXT1 - EXT1 refers to the main extinguishing output

CALIBRATE EXT2 - EXT2 refers to S2 if configured as a second extinguishing output.

EXTRACT SETTINGS.. This menu option will only be visible when one of the panel relay outputs has been configured as
an extract output.

The option allows configuration of any output which is used to activate an extract system.

This option configures the length of time the extract output remains active i.e. how long the
extract fan will run.

DURATION The left/right buttons are used to change fan duration in 0, 15, 30, 60, 90 & 120 minute time
periods.

Default: 0min
If a duration time has been configured as above then the START EXTRACT option will appear on
the screen.

This option will determine when the extract output will turn on thus activating an extract fan to
remove any extinguishing gas from the risk area.

The option can be set to activate the extract output automatically or manually:
START EXTRACT
AUTO - When set to Auto the extract fan output will be turned on automatically once the release
duration timer has expired.

MANUAL - When set to manual the extract fan output can be manually controlled either via acti-
vation of a programmed input or EXTRACTOR FAN function in the USER (Access Level 2)
menu.

PROG I/P SETTINGS.. This menu is used for programming the function associated with the two non-monitored inputs
P1 and P2 provided in the ZXT. Section 3 “Input Circuits” lists the various functions that can be
attached to these inputs.

Each input can be programmed independently when the input settings menu is selected, it is
then required to select the Panel input you wish to configure.

Opening the relevant Panel input screen there are two lines shown. This first line is the Panel
function, the left/right buttons can be used to scroll between the different panel functions availa-
ble.

The second line is for user text where applicable, functions which can be programmed with user
description text will have default text of PROG 1 or PROG 2 show on the second line. To enter a
text description use the left and right arrow keys to move along the line and the up and down
arrow keys to scroll through the letter selection.

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 Panel Configuration 5

RELAY SETTINGS.. The relay outputs provided in the ZXT Control Panel (FIRE, FAULT, REL, MODE, HOLD,
ABORT) are fully programmable for specific functions, each output is independently configur-
able.

This option allows configuration of the required function to each available output. Details regard-
ing each available function can be found in Section 3 “Output Circuits”.

To change the functionality of the required relay select the relay from the list, use the up/down
buttons to move up and down the list of functions available and the left/right buttons to toggle
between “YES” and “NO”.

The function which is set as “YES” is the one programmed to the relay operation.

Warning: Relays have been configured as default to comply with the requirements of EN54-2
and EN12094-1 changing the relay functionality will impact on compliance.

SOUNDER SETTINGS.. This menu option is used to configure the operation of the common Sounder outputs S1 and S2,
each Sounder output is independently configurable however the configurable options are identi-
cal for both.

Important! If Sounder output S2 is configured as an extinguishing output there will be no config-

uration options for S2 within this menu. The configuration options available are:
This option configures the ring pattern associated with the Sounder outputs. There are 4 ring pat-
terns that can be configured:

STEADY
The Sounder output is permanently switched on.

PULSE 1
Operates the Sounder output as 1 sec on, 1 sec off
RING
PULSE 2
Operates the Sounder output as 2 sec on, 1 sec off.

PULSE 3
Operates the Sounder output as 3 sec on, 1 sec off.

Default: STEADY

This option configures whether the Sounder(s) will silence when the silence alarms button is
pressed on the Control Panel fascia.

Select the Sounder output and use the left/right buttons to toggle between “YES” and “NO”. If
the option is set to “Yes” the Sounders will stop operating when the silence alarms button is
SILENCEABLE pressed.

If set to “No” the Sounders will continue to operate until the Panel is reset, the silence alarms
button will have no effect.

Default: NO

If the Sounders have been silenced, the ZXT can be configured to ensure the Sounders resound
if another alarm is activated in a different zone.
RESOUND DIFF ZONE
Use the left/right buttons to toggle the setting between “ON” and “OFF”.

Default: ON

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 Panel Configuration 5

CLEAR EVENT LOG.. The Sigma ZXT is provided with an event log which records all events that occur on the Panel
along with a time and date stamp. This provides a history of the Panels changes, activations,
faults etc. which can assist with diagnostics.

Further details regarding the event log are described in the Access Level 2 sub section. To clear
the event log select the “CLEAR EVENT LOG” option and the clear event log screen will appear:

*****clear event log*****

998 events logged
press enter to clear

XBACK CLEAR
This allows the engineer to enter a date when the next planned service of the system is due.
When the due date is reached the Panel will display a message on the LCD “Service Due dd/
SERVICE DUE DATE mm/yy.

This message will remain on the LCD until the service due date has been changed.

This is a screen which is used to show details of the panel configuration, while also providing the
ability to accept config changes or alternately reset config to factory default settings. If making
changes to the panels configuration you will not be able to accept the config changes without
accessing this screen and clicking on enter to commit changes as shown on the screen-shot
below right.

The default display of this screen will show details regards the config and provide the option to
reset the config (RESET CFG) to factory default settings by pressing the enter key as shown in
the screenshot below left.

*****MANAGE SITE DATA*****

MEMORY LOCK: OFF
BASE: FACTORY DEFAULT
+UPDATES:17 CRCSUM:EE24
no le2 connection

xBACK
MANAGE SITE DATA The screen shows the following information:

MEMORY LOCK
This will show either “LOCKED” or “UNLOCKED” and indicates the status of the Memory Lock
switch. “UNLOCKED” indicates the memory lock switch is off, “LOCKED” indicates the Memory
Lock switch is on.

BASE
This shows a reference to the last accepted configuration setting. As configuration changes are
accepted the code reference here will change. This code can be compared to the previous code to
confirm a config change.

UPDATES
This shows how many edits have been made to the configuration during the last level 3 access.

EDITS CRCSUM
This is a checksum code which relates to the panel configuration, the panel will check this code to
make sure the configuration is as expected.

NO LE2 CONNECTION
This line will display the connection status of a PC running LE2 programming software.

LOGOUT.. Exits the Engineering Menu.

Diagnostics info shows circuit calibration values for all monitored inputs and outputs. This infor-
DIAGNOSTICS INFO.. mation can be provided to Kentec support when experiencing issues with the ZXT system to help
with investigation.

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 Panel Configuration 5

Connection to LE2
The ZXT panel is compatible with LE2 configuration software which allows programming via PC as well as the ability
to download config and event log files.

To be able to connect LE2 to a ZXT panel the following will be required:

• Active LE2 account with ZXT database

• USB A to USB Type B micro lead
Figure 5-3
ZXT Connection to PC

Micro USB
Type B PC
USB A

Sigma ZXT

To request an LE2 account or access to the ZXT database contact Kentec Tech Support.

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 Adding/Removing Status Indicators & Ancillary Boards 6

Section 6
Adding/Removing Status Indicators & Ancillary Boards
Sigma ZXT/XT Status Indicators and Ancillary Boards can be connected to ZXT Extinguishing Control Panels to ex-
pand the performance and functionality of the system.

A single Sigma ZXT Panel can support up to 7x Status Indicators and 7x Ancillary Boards, connected to the RS485
data bus.

Man-1453 will provide more details on installation of Status Indicators, Man-1095 will provide further details on in-
stallation of Ancillary Boards.

This section of the Manual details how to register Status Indicators and Ancillary Boards onto a ZXT Extinguishing
Panel and assumes all necessary wiring, links and switches are completed as detailed in the relevant installation
Manuals Man-1453 and Man-1095.

Adding a Status Unit to a ZXT

Sigma ZXT & Sigma XT Status Indicators are supported and these instructions apply for both variants:

1. Check wiring and address switch settings on each unit connected to the ZXT.

Important! Double addressing of Status Indicators can cause performance issues therefore it is important to check
unit addresses before powering the system.

2. Power-up the Panel and Status Indicators. The ZXT will automatically identify any Status Indicators, their
addresses and will indicate them as UNEXPECTD on the ZXT LCD as shown in the screen-shot below.

Note. An unexpected device is one detected by the Panel which has not been registered onto the configuration. Un-
installed Status Indicators will show all LED’s illuminated and will sound any buzzers until install is complete.

Figure 6-1
Unexpected Status Indicator

TUE 01 JAN 2019 18:16:15

SI .1 1 IN1
UNEXPECTED

XEVENTS CONTROLS

3. To install the Status Indicators enter the Engineering Menu (Access Level 3) on the LCD and select the CONNECTED
DEVICES menu option.

Figure 6-2
Connected Devices

*****ENGINEERING MENU*****
>CONNECTED DEVICES..
SYSTEM SETTINGS..
USER SETTINGS..
CIE ZONE SETTINGS..
ECD SETTINGS..
PROG I/P SETTINGS..
xBACK goto menu

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 Adding/Removing Status Indicators & Ancillary Boards 6

4. In the CONNECTED DEVICES screen, select the REMOTE BUS option to open the REMOTE BUS STATUS
screen.

Figure 6-3
Remote Bus

****connected devices****
>remote bus..

xBACK goto menu

5. The REMOTE BUS STATUS screen provides a synopsis of what devices are connected and whether they have
been installed on the panel.

Figure 6-4
Remote Bus Status

****remote bus status****

sI AT 1 :UNEXPECTED
-SI- -ANC-
1.3.5.7 1.3.5.7

xBACK INSTALL

6. Below the screen header is a line showing the status of individual devices, the left and right arrow buttons can
be used to scroll through the addresses and see the status of each address.

The addresses 1-7 are shown for each group of Status Indicator/s Units and Ancillary Boards/s (ANC).
Status will be shown as OPERATIONAL, NONE, UNEXPECTED or MISSING. A symbol will be displayed for
each device beneath its corresponding address number.

The table below provides an overview of Remote Bus Status indications:

Symbol Status Description

Indicates the device with this address is regis-

OPERATIONAL tered onto the panel and is working correctly.

Indicates there is currently no device associated

NONE with this address.

Indicates a new device has been added to the

ZXT panel SI Bus which has not yet been regis-
UNEXPECTED
tered on the panel. Unexpected devices will be
indicated as ageneral fault on the ZXT panel.
Indicates a device has been removed or is no
MISSING longer communicating with the system.

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 Adding/Removing Status Indicators & Ancillary Boards 6

The following screen-shot shows an example of a system with OPERATIONAL, NONE and UNEXPECTED devices.

Figure 6-5
Example Remote Bus Status

****remote bus status****

ANC AT 1 :UNEXPECTED
-SI- -ANC-
1.3.5.7 1.3.5.7

xBACK INSTALL

7. To add a device use the left and right arrows to select the unexpected device to add in the device status line
and press the enter key (INSTALL). This will log the device onto the panel and the unexpected device fault will
clear.

The status will change to OPERATIONAL in the status line and the graphic symbol for this address will change
to □. The status LEDs should display their normal state and any buzzers will stop sounding. Complete this for
all unexpected devices until all devices are logged on to the panel.

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 Adding/Removing Status Indicators & Ancillary Boards 6

Removing a Status Indicator

The following instructions detail how to remove a Status Unit from a ZXT system, this process is the same for both
Sigma ZXT and Sigma XT Status Indicators.

Important! For safety reasons power must be removed from the ZXT control panel before carrying out any modifi-
cations to an extinguishing control system.

1. With the system powered down disconnect the device from the circuit and make the circuit good.

2. Power-up the Control Panel and the LCD should show a missing device fault with details of the device and
device address that is missing, see screen-shot below. A missing Status Indicator will also activate a hold oper-
ated status this is due to the monitored hold input on the removed Status Indicator not being present.

Figure 6-6
Missing Status Indicator

TUE 01 JAN 2019 18:11:15

SI .1 1 IN1
MISSING

XEVENTS CONTROLS

3. Enter the Engineering Menu (Access Level 3) and select the DEVICES CONNECTED option and then select
the REMOTE BUS option to open the REMOTE BUS STATUS screen.

4. The REMOTE BUS STATUS indicates the missing Status Indicator with the following symbol Using the left
and right arrow buttons scroll to display the address of the missing device on the status line.

5. To remove the device from the ZXT configuration press the enter button (UNINSTALL) the status line for this
address will show none and the graphical status icon will show

6. The Panel will still indicate a hold operated state as this is a latching condition. Complete the removal of the
Status Unit by pressing the ‘Reset’ button on the fascia to clear the hold operated event.

Note: Status Indicators can be un-installed from the configuration while being left as part of the physical circuit, how-
ever this will cause the Status Unit to flash all LED’s and sound its local buzzer (if fitted) to indicate a ‘comms’ fault.

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Adding an Ancillary Board to a ZXT

1. Check wiring and address switch settings on each unit connected to the ZXT.

Important! Double addressing of Status Indicators can cause performance issues therefore it is important to check
unit addresses before powering the system.

2. Power-up the Panel and Ancillary Boards. The ZXT will automatically identify any Ancillary Boards, their
addresses and will indicate them as UNEXPECTED on the ZXT LCD, as shown in the screen-shot below.

Note. An unexpected device is one detected by the Panel which has not been registered onto the configuration.

Figure 6-7
Unexpected Ancillary Board

TUE 01 JAN 2019 12:47:43

ANC BOARD .1 1 IN1
UNEXPECTED

XEVENTS CONTROLS

3. To install Ancillary boards enter the Engineering Menu (Access Level 3) on the LCD and select the
CONNECTED DEVICES menu option.

Figure 6-8
Connected Devices

*****ENGINEERING MENU*****
>CONNECTED DEVICES..
SYSTEM SETTINGS..
USER SETTINGS..
CIE ZONE SETTINGS..
ECD SETTINGS..
PROG I/P SETTINGS..
xBACK goto menu

4. In the CONNECTED DEVICES screen, select the REMOTE BUS option to open the REMOTE BUS STATUS
screen.

Figure 6-9
Remote Bus

****connected devices****
>remote bus..

xBACK goto menu

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 Adding/Removing Status Indicators & Ancillary Boards 6

5. The REMOTE BUS STATUS screen provides a synopsis of what devices are connected and whether they have
been installed on the Panel.

Figure 6-10
Remote Bus Status

****remote bus status****

ANC AT 1 :UNEXPECTED
-SI- -ANC-
1.3.5.7 1.3.5.7

XBACK INSTALL

6. Below the screen header is a line showing the status of individual devices, the left and right arrow buttons can
be used to scroll through the addresses and see the status of each address.

The addresses 1-7 are shown for each group of Status Indicator/s (SI) and Ancillary Board/s (ANC). Status will
be shown as OPERATIONAL, NONE, UNEXPECTED or MISSING. A corresponding symbol will be displayed
for each device beneath its address number.

The table below provides an overview of Remote Bus Status indications:

Symbol Status Reason

Indicates the device with this address is regis-

OPERATIONAL tered onto the panel and is working correctly.

Indicates there is currently no device associated

NONE with this address.

Indicates a new device has been added to the

ZXT panel SI Bus which has not yet been regis-
UNEXPECTED
tered on the panel. Unexpected devices will be
indicated as ageneral fault on the ZXT panel.
Indicates a device has been removed or is no
MISSING longer communicating with the system.

7. To add a device use the left and right arrows to select the unexpected device to add in the device status line
and press the enter key (INSTALL). This will log the device onto the Panel and the unexpected device fault will
clear. The status will change to OPERATIONAL in the status line and the graphic symbol for this address will
change to . Complete this for all unexpected devices until all devices are logged on to the panel.

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 Adding/Removing Status Indicators & Ancillary Boards 6

Removing an Ancillary Board

The following instructions detail how to remove an Ancillary Board from a ZXT system.

Important! For safety reasons power must be removed from the ZXT control panel before carrying out any modifi-
cations to an extinguishing control system.

1. With the system powered down disconnect the device from the circuit and make the circuit good.

Power-up the Control Panel and the LCD should show a missing device fault with details of the device and
device address that is missing, see screen-shot below.

Figure 6-11
Missing Ancillary Board

TUE 01 JAN 2019 10:22:51

ANC. BOARD .1 1 IN1
MISSING

XEVENTS CONTROLS

2. Enter the Engineering Menu (Access Level 3) and select the DEVICES CONNECTED option and then select
the REMOTE BUS option to open the REMOTE BUS STATUS screen.

3. The REMOTE BUS STATUS indicates the missing device on the graphic with the following symbol
Using the left and right arrow buttons scroll to display the address of the missing device on the status line.

4. To remove the device from the ZXT configuration press the enter button (UNINSTALL) the status line for this
address will show none and the graphical status icon will show.

5. The device has now been removed from the system and any associated faults will have cleared.

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 Maintenance & Assistance 7

Section 7
Maintenance & Assistance
Sigma ZXT control panels do not require any specific maintenance but should the control panel become dirty it can
be wiped over with a barely damp cloth. Detergents or solvents should not be used to clean the panel and care must
be taken that water does not enter the enclosure.

The control panel contains sealed lead acid batteries to provide standby power in the event of mains failure.
These batteries have a life expectancy of around 4 years. It is recommended that these batteries be tested in ac-
cordance with the battery manufacturer’s recommendations annually to determine their suitability for continued
standby applications.

Important! Testing of the extinguishant system should only be carried out by trained personnel and must be done with
appropriate isolation measures in place to ensure that accidental discharge of the extinguishant agent is avoided.

If You Need Help

If you need technical support contact Kentec at + 44 (0) 1322 222121 or e-mail the department,
techsupport@kentec.co.uk. Kentec technical support is available Monday through Friday, 8:30 AM to
5:00 PM.

Limited Returns and Repairs Policy

In-Warranty Items

All equipment supplied by Kentec Electronics Ltd is provided with a warranty, as defined in Section 8
(Warranties & Liability) of the Terms and Conditions of Sale. These warranties are between Kentec
Electronics Ltd (the Seller) and the company that placed the order upon the seller (the Buyer). The
warranty period is valid for 36 months from the delivery date and is non-transferable.

Damaged Goods

In the event of damage to equipment during transit or any defect in the quality of goods, the Buyer shall
notify Kentec Electronics Ltd within seven days of delivery as detailed in the Terms & Conditions of Sale. The goods
may then be returned to the Customer Service Department of Kentec Electronics Ltd. for repair, or replacement parts
may be supplied (by arrangement).

Component Failure

In the event of a defect of the supplied equipment during the warranty period, due to defective
materials or workmanship, then replacement parts shall be supplied to the Buyer using the Service
Replacement Item (SRI) scheme.

Service Replacement Items

The Buyer shall request the replacement part(s) required from the Customer Service Department. This
request shall be made by e-mail to sales@kentec.co.uk and shall include the parts required, the panel Works Order
(W/O) Number and the required delivery address.

If the Buyer is not aware of the required replacement part(s), additional advice may be obtained from the Technical
Support Department of Kentec Electronics Ltd. Once the SRI has been approved, items are normally dispatched for
next day delivery within the mainland UK, subject to stock availability.

SRI parts are supplied on the following terms and conditions:

• SRI parts are loan items and are not available for resale.

• At all times, Kentec Electronics Ltd. retains the title of SRI parts supplied, as detailed in Kentec’s Terms and
Conditions of Sale.

• All SRI parts must be returned to the Customer Service department of Kentec Electronics Ltd within 14days of
delivery.

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 Maintenance & Assistance 7

• Any SRI parts that have not been returned within 28 days of delivery will be invoiced at the price given in the
Kentec Price List, less discount.

• Any returned items that are found to have failed due to fair wear and tear, willful damage, negligence, abnormal
working conditions, misuse or alteration or repair without the Suppliers approval or failure to follow the sellers
instructions will be subjected to a repair fee of up to the price given in the Kentec Price List, less any discount.

• Any returned items that are not part of the original equipment or are not in warranty will be invoiced at the price
given in the Kentec Price List, less discount where applicable.

• All SRI parts shall be returned in the same packaging as the replacement parts were supplied in.Failure to
ensure that adequate anti-static precautions are taken during the replacement of parts, or in the return of SRI
parts may result in an invoice of up to the price given in the Kentec Price List, less any discount.

• Any SRI parts returned without the completed SRI delivery report or any SRI reference documentation will be
invoiced at the price given in the Kentec Price List, less any discount. The right to receive Service Replacement
Items is regularly reviewed and may be withdrawn from persistent abusers of this facility.

• Kentec reserve the right not to supply SRI items without prior notice.

Repair Warranties

Repaired items are not covered by the normal Warranties and Liability conditions in the Terms and Conditions of
Sale.Subsequent failures of repaired items will only be covered if the failure is due to a material or workmanship
defect directly associated with the repair and for a period not exceeding three months from the date of the repair.

Kentec Electronics Ltd are under no liability if the repaired or replaced components are found to have failed due to
fair wear and tear, willful damage, negligence, abnormal working conditions, misuse or alteration or repair without
approval or failure to follow the sellers instructions.

Out Of Warranty Items

Kentec Electronics Ltd provides a test and repair facility for most standard and special build products. This facility
can also recondition control panels, subject to availability of components.

Customer Repairs

Items for repair shall be returned to the Customer Service Department of Kentec Electronics Ltd. Any items returned
for repair must be accompanied with the following:

• A request for repair work to be undertaken.

• A customer contact name.
• Details of the company requesting the repair.
•
Failure to supply the required information will result in the returned items being quarantined for a period not exceed-
ing 60 days. If the items are not identified within 60 days of receipt, then Kentec Electronics Ltd. reserves the right
to dispose of these items or return them.

A written quotation will be provided for all items to be repaired that are not included in the repair prices section of
the Kentec Price list. No repairs or refurbishment will be undertaken without prior authorisation from the customer
and a written order for the repair work. Returned equipment will be held awaiting authorisation for a period not ex-
ceeding 60 days from the date of quotation. After this period, Kentec Electronics Ltd. reserves the right to dispose
of these items or return them.

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 LCD Menu Structure 7

Section 7
LCD Menu Structure
The following diagrams provide an overview of the LCD menu structure. Panel functions are shown throughout
Access Levels 1, 2 and 3.

Figure 7-1
Access Level 1

PANEL START-UP
SYS FLT (SAFE MODE)

ACCESS LEVEL 1
SYSTEM STATUS

EVENTS

ACTIVE EVENTS SUMMARY

CONTROLS

PASSCODE ENTRY

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 LCD Menu Structure 7

Figure 7-2
Access Level 2

ACCESS LEVEL 2
VIEW ACTIVE EVENTS..
>ĞŐĞnd:
ACTIVE EVENTS SUMMARY..
EŽƚĞ͗DĞŶƵŝƚĞŵƐǁŝƚŚĂĚŽƩĞĚďŽƌĚĞƌĂƌĞŽŶůLJǀŝƐŝďůĞ
ǁŚĞŶĂƐĞĐŽŶĚĂƌLJĞdžƟŶŐƵŝƐŚŝŶŐŽƵƚƉƵƚ;^ϮͿŝƐĐŽŶĮŐƵƌĞĚ͘
ALARMS
FAULTS
DISABLEMENTS
OTHER EVENTS MONITORED INPUTS..
EVENT LOG FUNCTIONS..

HOLD: ENABLED/DISABLED
DISPLAY ON SCREEN..
ABORT: ENABLED/DISABLED
ALL EVENTS
FIRES MAN MODE: ENABLED/DISABLED
FAULTS
DISABLEMENTS REL PR SW: ENABLED/DISABLED
OTHER EVENTS
LO PR SW: ENABLED/DISABLED
TEST ZONES..
DIS EXT IP: ENABLED/DISABLED

SOUNDER: OFF/ON
PANEL INPUTS..
ZONE 1: NORMAL/IN TEST
PROG IP1: ENABLED/DISABLED
ZONE 2: NORMAL/IN TEST
PROG IP2: ENABLED/DISABLED
ZONE 3: NORMAL/IN TEST

ENABLE/DISABLE.. SOUNDER DELAY..

SOUNDER 1: IMMEDIATE/
CIE ZONES.. DELAYED

SOUNDER 2: IMMEDIATE/
ZONE 1: ENABLED/DISABLED DELAYED

ZONE 2: ENABLED/DISABLED
DATE AND TIME..

ZONE 3: ENABLED/DISABLED
DAY
ECD SUBSYSTEM..
MONTH
EXTING RELEASE: ENABLED/DISABLED
YEAR
EXTRACTOR: ENABLED/DISABLED
HOUR
ALL MAN RELEASE: ENABLED/DISABLED
MIN

SOUNDERS..
RESERVE SELECTION..
DISABLE ALL: NO YES

RESERVE SELECTION: YES/NO

SOUNDER 1: ENABLED/DISABLED

SOUNDER 2: ENABLED/DISABLED
EXTRACTOR FAN

RELAYS..
EXTRACTOR FAN: ON/OFF

FIRE RELAY: ENABLED/DISABLED

LOGOUT
FAULT RELAY: ENABLED/DISABLED

RELEASE RELAY: ENABLED/DISABLED ENGINEER PASSCODE ENTRY

MODE RELAY: ENABLED/DISABLED

HOLD RELAY: ENABLED/DISABLED

ABORT RELAY: ENABLED/DISABLED

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 LCD Menu Structure 7

Figure 7-3
Access Level 3

ACCESS LEVEL 3 (Engineering)

CONNECTED DEVICES.. Legend:

REMOTE BUS.. EŽƚĞ͗DĞŶƵŝƚĞŵƐǁŝƚŚĂĚŽƩĞĚďŽƌĚĞƌĂƌĞŽŶůLJǀŝƐŝďůĞ

ǁŚĞŶĂƐĞĐŽŶĚĂƌLJĞdžƟŶŐƵŝƐŚŝŶŐŽƵƚƉƵƚ;^ϮͿŝƐĐŽŶĮŐƵƌĞĚ͘

SI 1-7 / ANC 1-7

CIE ZONE SETTINGS..

SYSTEM SETTINGS..
CONFIGURE ZONE 1..

SUPPRESS FIRE RLY: YES/NO USER TEXT DESCRIPTION (ZONE 1)

SUPPRESS FAULT RLY: YES/NO DELAY SOUNDER 1 & 2: 30s INCREMENTS

NEW FAULT RLY TOGGLE: YES/NO LATCHING (LOCKED): YES/NO

MAINS FAULT RLY DLY: OFF/30m SOUNDERS: NORMAL/SILENT

DETECT EARTH FAULTS: YES/NO SHORT CCT: FAULT/ALARM

VERIFY DELAY: OFF TO 30s

SOUNDER2 OP:SOUNDER/EXTINGUISHER

I.S. BARRIER: YES/NO

AUX24V RESETs: NONE/3s

INVERT LOW PRESS SW: YES/NO CONFIGURE ZONE 2..

INVERT REL PRESS SW: YES/NO USER TEXT DESCRIPTION (ZONE 2)

RESET ECD: WITH CIE/AFTER CIE DELAY SOUNDER 1 & 2: 30s INCREMENTS

EN54-13 MONITORING: ON/OFF LATCHING: YES/NO

FIRMWARE SOUNDERS: NORMAL/SILENT

SHORT CCT: FAULT/ALALARM

USER SETTINGS
VERIFY DELAY: OFF TO 30s

LCD BACKLIGHT: DYNAMIC/WHITE I.S. BARRIER: YES/NO

LCD CONTRAST: 0-10

CONFIGURE ZONE 3..

ACCESS LEVEL BEEP: ON/OFF

USER TEXT DESCRIPTION (ZONE 3)

BUZZER SIL LEVEL: 1/2

DELAY SOUNDER 1 & 2: 30s INCREMENTS

SUPRESS BUZZER: YES/NO

LATCHING: YES/NO

LANGUAGE: ENGLISH/LOCAL
SOUNDERS: NORMAL/SILENT

DAYLIGHT SAVING: OFF/AUTO

SHORT CCT: FAULT/ALARM

AUTO: DLS START MONTH:

VERIFY DELAY: OFF TO 30s
J/F/M/A/M/J/J/A/S/O/N/D

I.S. BARRIER: YES/NO

AUTO: DLS START WEEK:
1/2/3/4/LAST ECD SETTINGS..

AUTO: DLS END MONTH: SOUNDER 2: RESERVE EXTINGUISHANT / COMMON EXTINGUISHANT

J/F/M/A/M/J/J/A/S/O/N/D
ACTIVATE ON: Z1 ONLY / Z2 ONLY / Z3 ONLY / ANY1 / Z1 & Z2 / Z1 & Z3 /
AUTO: DLS END WEEK: Z2 & Z3 / ANY 2 / ALL 3
1/2/3/4/LAST
HOLD FAULT: HOLD+FAULT/FAULT ONLY

ABORT FAULT: HOLD+FAULT/FAULT ONLY

REL LIT BY: REL SW ONLY / SW OR EXT OP

RESET INHIBIT:0 TO 30m

RELEASE DELAY MAN: 0 TO 60s

RELEASE DELAY AUTO: 0 TO 60s

RELEASE DURATION: 60S TO INFINITE

EXT 1 RELEASE TIME: 60S TO INFINITE

EXT 2 RELEASE TIME: 60S TO INFINITE

EXT 2 RELEASE DELAY: 60S TO INFINITE

CALIBRATE EXT: CALIBRATE EXT1/CALIBRATE EXT2

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 LCD Menu Structure 7

Figure 7-4
Access Level 3 (Continued)

PROG I/P SETTINGS..

PROG I/P P1..

ACTION: TRANSPARENT / EVACUATE / SILENCE ALARM / RESET /

GENERAL FAULT FLOOD ZONE FAULT / GEN DISABLEMENT / USER
ACCESS / START EXTRACTION / USE RESERVE EXTG

PROG I/P P2..

ACTION: TRANSPARENT / EVACUATE / SILENCE ALARM / RESET /

GENERAL FAULT FLOOD ZONE FAULT / GEN DISABLEMENT / USER
ACCESS / START EXTRACTION / USE RESERVE EXTG

EXTRACT SETTINGS..

DURATION:0 TO 120M

START EXTRACT: AUTO/MANUAL

Note: Extract SeƫŶgs MeŶƵ oŶly preƐĞŶƚ wheŶ a Relay KƵtƉƵƚ is cŽŶĮgƵred for Extract

RELAY SETTINGS..

FIRE RELAY../FAULT RELAY../ REL RELAY../

MODE RELAY../ HOLD RELAY../ABORT
RELAY..

FIRE:YES/NO ON HOLD:YES/NO

ALARM:YES/NO ON ABORT:YES/NO

FAULT:YES/NO LOW PRESSURE: YES/NO

FIRE:YES/NO RELEASE DISABLED: YES/NO

PREACTIVATED:YES/NO ON GEN DISABLEMENT: YES/NO

ACTIVATED:YES/NO EXTRACT: YES/NO

RELEASED:YES/NO RESET: YES/NO

ON MANUAL:YES/NO

SOUNDER SETTINGS..

PANEL SOUNDER 1..

RING: STEADY/PULSE 1/PULSE 2/PULSE 3/OFF

SILENCEABLE: YES/NO

RESOUND DIFF ZONE: ON/OFF

PANEL SOUNDER 2..

RING: STEADY/PULSE 1/PULSE 2/PULSE 3/OFF

SILENCEABLE: YES/NO

RESOUND DIFF ZONE: ON/OFF

CLEAR EVENT LOG..

SERVICE DUE DATE..

YEAR

MONTH

DAY

MANAGE SITE DATA..

LOGOUT..

DIAGNOSTICS INFO..

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 Specification A

Appendix A
Specification
Mechanical

Item Version Details

Enclosure construction Standard/Large 1.2mm/1.5mm mild sheet steel

Enclosure finish Standard/Large Epoxy powder coat

Enclosure colour Standard/Large BS 00-A-05 grey (fine texture)

Panel weight Standard/Large 6Kg/7Kg (excluding batteries)

Electrical

Item PSU Electrical Rating Comments Parameters

Mains supply S420 (2.6A) 230V AC, 50Hz +10 100W maximum Standard European
- 15% mains connection
S406 (5.25A)

Mains supply fuse S420 (2.6A) T2.0 A 20mm, 250V Replace only with
AC HRC similar type.
S406 (5.25A) T3.0 A 20mm, 250V
AC HRC

Power supply rating S420 (2.6A) 2.6A total including

battery charge 28V
+/-1V

S406 (5.25A) 5.25A total includ-

ing battery charge
28V +/-1V

Imax a S420 (2.6A) 395mA without

charger current
(600mA)

S406 (5.25A) 395mA

(1.25A with
charger)

Imax b S420 (2.6A) 2.0A

S406 (5.25A) 5.25A

I min S420 (2.6A) 75mA

S406 (5.25A) 75mA

Ri Max S420 (2.6A) 1 Ohm

S406 (5.25A) 1 Ohm

Output Voltage S420 (2.6A) 20.3 - 28.3V DC

S406 (5.25A) 19 - 28.5V DC

Maximum ripple voltage S420 (2.6A) <200mV peak to

peak @ rated volt-
S406 (5.25A)
age.

Battery type S420 (2.6A) 7Ah:

Yuasa NP7-12

S406 (5.25A) 12Ah:

Yuasa NP12-12 Larger enclosure
required when
17Ah: using 12/17Ah bat-
Yuasa NP17-12 teries.

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 Specification A

Battery charge voltage S420 (2.6A) 27.6V DC nominal Modulated DC

(temperature com-
S406 (5.25A)
pensated).

Battery charge current S420 (2.6A) 0.6A Modulated DC

S406 (5.25A) 1.25A

Battery fuse S420 (2.6A) 20mm F2.5A 250V Replace only with
similar type.

S406 (5.25A) Electronic over

current protection
circuit present

Current draw in mains fail S420 (2.6A) 0.11A

condition
S406 (5.25A) 0.14A

Current draw in second S420 (2.6A) 0.19A Stand allow system

stage alarm without any outputs
S406 (5.25A) 0.23A
being loaded.

Current draw in post dis- S420 (2.6A) 0.21A Stand allow system
charge condition without any outputs
S406 (5.25A) 0.26A
being loaded.

R 0V output S420 (2.6A) Fused at 500mA

with electronic fuse
S406 (5.25A)

Maximum current draw S420 (2.6A) 2.0A

from batteries
S406 (5.25A) 5.5A

Quiescent current S420 (2.6A) <1mA @27.6V

battery cut-off

Battery monitoring current S420 (2.6A) <1mA@24V

consumption

Sounder Outputs S420 (2.6A) 21 to 28V DC. 1.6A load over all Voltage reversing DC.
Fused at 500mA circuits
S406 (5.25A)
with electronic fuse.

Fault relay contact rating S420 (2.6A) / S406 5 to 30V DC 1A Maximum ratings Volt free changeover
(5.25A) PSU max. for each not to be exceeded. contact.

Fire relay contact rating S420 (2.6A) / S406 5 to 30V DC 1A Maximum ratings Volt free changeover
(5.25A) PSU max. for each not to be exceeded. contact.

Released relay contact S420 (2.6A) / S406 5 to 30V DC 1A Maximum ratings Volt free changeover
rating (RK48) (5.25A) PSU max. for each not to be exceeded. contact.

Mode relay contact rating S420 (2.6A) / S406 5 to 30V DC 1A Maximum ratings Volt free changeover
(5.25A) PSU max. for each not to be exceeded. contact.

Hold relay contact rating S420 (2.6A) / S406 5 to 30V DC 1A Maximum ratings Volt free changeover
(5.25A) PSU max. for each not to be exceeded. contact.

Abort relay contact rating S420 (2.6A) / S406 5 to 30V DC 1A Maximum ratings Volt free changeover
(5.25A) PSU max. for each not to be exceeded. contact.

Zone quiescent current S420 (2.6A) / S406 0mA minimum,

(5.25A) PSU 2mA maximum

Terminal capacity S420 (2.6A) / S406 0.5mm2 to 2.5mm2

(5.25A) PSU solid or stranded
wire

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 Specification A

Maximum number of S420 (2.6A) / S406 32 The number of

detectors per zone (5.25A) PSU detection devices
supported per zone
will vary dependent
on detector manu-
facturer. The cur-
rent rating of the
zone circuit and
zone devices
should be reviewed
at system design
stage. To ensure
compliance with
circuit monitoring
requirements no
more than 32
devices should be
fitted to any one
zone.

Detection circuit end of line S420 (2.6A) / S406 6K8 +/- 5% 0.5W
(5.25A) PSU resistor

Monitored input end of line S420 (2.6A) / S406 6K8 +/- 5% 0.5W
(5.25A) PSU resistor

No. of detection circuits S420 (2.6A) / S406 3

(5.25A) PSU

Zone detection circuits S420 (2.6A) / S406 21.1 to 21.3V DC

(5.25A) PSU

Number of sounder circuits S420 (2.6A) / S406 2x 1st stage, 1x 2nd

(5.25A) PSU stage

Sounder output S420 (2.6A) / S406 21 to 28V DC

(5.25A) PSU @500mA

Sounder circuit end of line S420 (2.6A) / S406 1N4004 diode

(5.25A) PSU
Number of extinguishant S420 (2.6A) / S406 1 (or 2 with S2
outputs (5.25A) PSU sounder output
reconfigured)
Extinguishant release S420 (2.6A) / S406 21 to 28V DC @1A
output (5.25A) PSU

Extinguishant release S420 (2.6A) / S406 Adjustable 0 to 60

delay (5.25A) PSU seconds (+/-10%)

Extinguishant release S420 (2.6A) / S406 Adjustable 60 to

duration (5.25A) PSU 300 seconds

Zone normal threshold S420 (2.6A) / S406 10K to 2K Ohms

(Allowable EOL) (5.25A) PSU

Detector alarm threshold S420 (2.6A) / S406 1K to 390 Ohms

(5.25A) PSU

Call point alarm threshold S420 (2.6A) / S406 370 Ohms to 0

(5.25A) PSU Ohm

Short circuit threshold S420 (2.6A) / S406 130 to 0 Ohms

(5.25A) PSU

Head removal condition S420 (2.6A) / S406 15.5 to 17.5 V +/-

(5.25A) PSU 5%
Cabling S420 (2.6A) / S406 FP200 or equiva-
(5.25A) PSU lent (max. capaci-
tance 1uF. Max
inductance 1 milli-
henry)

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 Specification A

Monitored inputs normal S420 (2.6A) / S406 10K to 2K Ohm

threshold (Allowable (5.25A) PSU
EOL)

Monitored inputs alarm S420 (2.6A) / S406 2K to 150 Ohms +/-

threshold (5.25A) PSU 5%

Monitored inputs short cir- S420 (2.6A) / S406 140 to 0 Ohms +/-
cuit threshold (5.25A) PSU 5%

Status unit/Ancillary S420 (2.6A) / S406 Two wire RS485 Total 14No: EIA-485 specification
board connection (5.25A) PSU connection (EIA 7no. Status Units
485 specification) 7no. Ancillary

Status unit power output S420 (2.6A) / S406 21 to 28V DC @ Maximum 300mA
(AUX 24V) (5.25A) PSU 300mA load

Environmental

Important! This Control Panel is environmental class A and is designed for indoor use only. Operation outside these parame-
ters may render the equipment unsafe.

Operating temperature range -10 to +40°C (95% relative humidity, non-condensing)

Storage temperature range -20 to + 80°C

Ingress protection IP30

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 Specification A

Battery Calculation

Battery calculation formula (BS 5839-1: 2002)

Cmin = 1.25((T1*I1) + D(I2*T2))

Cmin = minimum capacity of battery when new at a 20 hour discharge rate at 20c in ampere-hours (Ah)

1.25 = ageing factor allowing 5% per year over 4 years

T1 = battery standby period in hours

T2 = alarm time in hours (usually 0.5)
I1 = battery standby load in amperes
I2 = battery alarm load in amperes
D = battery de-rating factor (usually assumed at 1.75). This allows for the inefficiency of the battery under high load
conditions

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 Glossary B

Appendix B
Glossary

Term Meaning

AC Alternating Current.

AUX 24 Auxiliary 24 Volt supply.

CCT Circuit

CIE Control and Indicating Equipment

CPU Central Processor Unit

DC Direct Current.

ECD Extinguishant Control Device

EOL End of Line (Resistor).

EXTING. Extinguishant

FLT Fault

I.S. Intrinsically Safe

IDC Insulation-Displacement Contact (connector).

I/P Input

Knock-out Enclosure cable entry point. Using a centre punch (or similar), apply a sharp, sin-
gular downward force, to knock-out blank.

LCD Liquid Crystal Display.

LCK OFF Lock Off

LCMU Line Continuity Monitoring Unit

LED Light Emitting Diode.

LIT
LO PRESS Low pressure

LVL Level

MAN RELEASE Manual Release

mm Millimetres

O/P Output

PCB Printed Circuit Board.

PROG I/P Programmable Input

REL Release

REL IP Release Input

REL PRES. SWITCH Release Pressure Switch

RLY Relay

S1 Sounder 1

S2 Sounder 2

S3 Sounder 3

Schottky diode A diode which has a low forward voltage drop and a very fast switching action.

SIL Silence

SLA Sealed Lead Acid.

SW Switch

Watchdog System monitoring (safe mode).

Z Zone

Man-1451 Rev.02
Sigma ZXT Product Manual

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