Section 4

EST3 Series
Technician Certification Course
Section 4
Cabinet Enclosures

Cabinet Enclosures

Gray

3-CAB21 3-CAB14 3-CAB7 3-CAB5

Red

EST3 Series Student Workbook 4-1

Cabinet Enclosures Section 4

3-CAB21 Cabinet Enclosure

EST3 Employs a Layered Approach

for Its Assembly

Local
Rail Inner door
Chassis Modules Outer door
assembly
or rail (LRMs) assembly
Back box
assemblies Operator
enclosure
Layer
Panels

4-4 EST3 Series Student Workbook

Section 5

EST3 Series
Technician Certification Course
Section 5
Standard Components

3-PPS Primary Power Supply Heat Sink

Required in every EST3 Cabinet

AC Power Input
For 120Vac or 240 VAC
operation

16-
16-pin
data line
connector
to
3-PSMON
DC
power
connector Battery
to connections
3-PSMON &
Temperature
Monitor

EST3 Series Student Workbook 5-1

Standard Components Section 5

3-PPS Primary Power Supply Heat Sink

Four Screws

Four 11/32 Nuts

Mounted on the back of the chassis on the leftmost

footprint, beneath the rail assembly.
NOTE: Installation of components on the rear of
the chassis requires a 11/32" socket with a 3"
extension and a standard screwdriver.

The 3-CPU, 3-CPU1 (shown) or 3-CPU3

Panel Controller
Required in every EST3 Cabinet
RJ11
Connection Common
for System
downloads Relay
connections

J1 Connector
for
LCD Connection

Audio Network
Riser
connections RS-
RS-232
Port 1 and Port 2
connections
Data Network
Riser
connections

5-2 EST3 Series Student Workbook

Section 5 Standard Components

The 3-CPU, 3-CPU1 (shown) or 3-CPU3

Panel Controller

1. Is a Dual Slot Local Rail Module (LRM).

2. Occupies two module spaces.
3. Must be installed in the first two module
spaces(slots) on the upper rail assembly.
We use 3-CPUx to represent 3-CPU/3-CPU1/3-CPU3 from now on.

The 3-PSMON Primary Power Supply

Monitor Module
Required in every EST3 Cabinet

Ribbon Cable
Connector
DC
for optional
power
control/display
connector
module
from
3-PPS
24 Vdc
16-
16-pin Auxiliary
data line power
connector connections
from
3-PPS BACK FRONT

EST3 Series Student Workbook 5-3

Standard Components Section 5

Typical 3-PSMON Wiring

POWER/
BOOSTER
MONITOR
MODULE Power cable (P/N 250187) to
P2 on Power/Booster Supply.

P6 16 pin data cable (P/N 250188) to

P3 on Power Supply
or
14 pin data cable (P/N 250189) to
P4 TB1 P3 on Booster Supply.

4 3 2 1 To TB1 on Monitor Module

1 ALL WIRING POWER LIMITED

AUX. POWER #1

AUX. POWER #2
24 VDC, 3.5 A

24 VDC, 3.5 A

2 EACH AUXILIARY OUTPUT NOMINAL 24VDC @ 3.5A

3 A SINGLE POWER SUPPLY OUTPUT CAN NOT EXCEED
7.0 AMPS
4 MAINTAIN 1/4 In (6 mm) BETWEEN POWER CABLE
AND ALL POWER LIMITED WIRING
5 P4 & P6 ON BACK OF MONITOR MODULE

Refer to installation sheets for the most current information.

The 3-PSMON Primary Power Supply

Monitor Module

1. Single Slot Local Rail Module.

2. Mount adjacent to the 3-CPUx in slot 3.

3. Provides the interface (data and power connections)

between the 3-PPS and the rails.

5-4 EST3 Series Student Workbook

Section 5 Standard Components

Typical 3-CPUx Wiring

To next panel Class A Connections
3-CPU Module with 3-RS485A card
COMMON SYSTEM RELAYS
Connect to TB2 on 3-CPU Module

Network Audio Riser

COM. TROUBLE
N.O. TROUBLE
N.C. TROUBLE

20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
COM ALARM
N.O. ALARM

N.C. ALARM

COM SUPV.
DB9 FEMALE
N.O. SUPV.

N.C. SUPV.
(REAR VIEW)
PIN 9
(5) COM
(3) TXD PORT #2

Network Data Riser

TO PRINTER OR REMOTE
(2) RXD COMMAND SYSTEM,
PIN 1

OR
1 2 3 4 5 6 7 8 9 10 DB25 FEMALE
(REAR VIEW)
PIN 13 PIN 25

PORT #2
Connect to TB1 on 3-CPU Module To 3-ASU for Single (7) COM TO PRINTER OR REMOTE
Cabinet, Non-Networked COMMAND SYSTEM,
Applications w/o 3-RS485 (3) RXD
option card (2) TXD
PIN 14
PIN 1
From previous panel PIN 25
PIN 13
3-CPU Module or a
3-ASU DB25 FEMALE
(REAR VIEW) PORT #1
(7) COM ISOLATED PORT
TO PRINTER OR REMOTE
Wiring Notes COMMAND SYSTEM.
(3) RXD
(2) TXD
1. Maximum #14 AWG wire: minimum #18 AWG. PIN 14
PIN 1
2. All shields, if used, must be continuous and
insulated from ground, except at the originating
panel.

Refer to installation sheets for the most current information.

Recommended Method for Data Network Wiring

A
Class B A
Class B

Class A Return

EST3 Series Student Workbook 5-7

 3-CPU3
Central Processor Module

Product description Specifications

Installation: Occupies first 2 spaces on rail chassis
Internal RS-232 serial port
N
C
C

TR OUBLE
N
O
N
O
C

ALAR M
N
-
A
N
C
N
O
SUP
C N
C
Type: Isolated, Class B
Connector: RJ-11
Common control relays: 3 Form C relays rated at 30 Vdc @ 1A
TB1

for alarm, supervisory, and trouble

Operating environment
Temperature: 32 to 120 °F (0 to 49 °C)
Humidity: 93% RH, noncondensing
Power requirements
Voltage: 24 Vdc
J1
Standby current: 145 mA
Alarm current: 155 mA
Note: For battery calculations, these currents include all
listed primary power supplies.
Required software: 3-CPU3 Boot and Application code must be
version 1.33 or later
NETWORK AUDIO AUDIO AUDIO AUDIO R C R C
OUT IN A IN A O UT B IN B OUT R T T O R T T O
A A B B X X S M X X S M
+ - + - + - + - + - + - 1 1 1 1 2 2 2 2

Installation instructions
1. Install any 3-CPU3 option cards required. Refer to the
respective installation sheets for the option card being
The 3-CPU3 Central Processor Module is the control element installed.
for all rail modules and control/display modules installed within 2. Slide the 3-CPU3 into the first two rail slots on the rail
an enclosure. The 3-CPU3 processes all information from chassis assembly. Be careful to align the option cards into
modules installed within the cabinet as well as data received the card guides.
from other panels over the network data riser.
3. Gently push the 3-CPU3 until it is firmly seated into the rail
Note: 3-CPU3 is a replacement for the 3-CPU1 and 3-CPU. connectors.
The 3-CPU3 has an internal calendar/clock with leap year 4. Secure the module to the rail by pushing the top and
function provides date/time event stamping and initiates timed bottom snap rivet fasteners until they lock in place.
events. The 3-CPU3 automatically identifies and supervises all 5. Connect the field wiring.
modules installed on the rail chassis and has an integral
watchdog to identify both hardware and software faults. The
module has Form-C common alarm, trouble, and supervisory Primary power
supply Primary power
relay contacts that operate whenever any alarm, supervisory, supply monitor
or fault condition is detected in the network.
The 3-CPU3 communicates with other 3-CPUs on the network
over an RS-485 or fiber optic network data circuit. Class A or B N
O
C

TROUBLE
N
C
N
O
C

ALARM
N
-
A
N
C
N
O
SUP
C N
C

wiring configuration can be used for the network data circuit TB1

and digital audio circuits. An optically isolated RS-232 port is

provided for data upload/download and system maintenance.
An optional optically isolated RS-232 port card is available to
support a printer or an external command system. The 3-CPU3
also provides the command and control functions for the 8-
channel digital audio subsystem installed on the rail.
The 3-CPU3 occupies the two leftmost positions on the rail J1

chassis assembly (logical address 0). In this position it

functions as the local bus master and supervises all traffic on
the rail bus and implements ground fault detection.
The controller is secured to the rail chassis using snap rivet NETWORK AUDIO AUDIO AUDIO AUDIO R C R C

fasteners. All field wiring connections to the 3-CPU3 module

OUT IN A IN A OUT B IN B OUT R T T O R T T O
A A B B X X S M X X S M
+ - + - + - + - + - + - 1 1 1 1 2 2 2 2

are made via plug-in connectors. All external connections are

power-limited and transient protected. The plug-in connectors
and snap rivet mounting also facilitate rapid remove-and-
replace troubleshooting. The 3-CPU3 module provides support
brackets for mounting the 3-LCD display or a protective cover 3-CPU3
plate.

Installation Sheet 06AUG03 P/N: 3100648 REV: 1.0

3-CPU3 - Central Processor Module 1/4
Field wiring connections
Network data riser connections
3-CPU3
A 3-CPU3 equipped with a 3-RS485A or 3-RS485B card can
TB2
communicate with other similarly equipped CPU modules by NETWORK AUDIO
way of the network data riser. TB2 on the 3-CPU3 provides OUT IN A IN
A A B B
the terminal connections for connecting to the network data Isolated
riser (Figure 1). Connect the network data riser to the 3- terminals
CPU3 as shown in Figure 2 for class B wiring and Figure 3
for class A wiring. The NETWORK B terminals provide an
isolated connection. The NETWORK A terminals are not
isolated.
Notes From NETWORK B+ on To NETWORK A+ on
previous CPU module next CPU module
• All network data riser wiring is supervised and power-
limited. From NETWORK B- on To NETWORK A- on
• When connecting the network wiring, always wire the previous CPU module next CPU module
isolated terminals on one CPU module to the non-
isolated terminals of another. Figure 1: The NETWORK IN terminals are isolated from
• On Class B network data risers, the panel that does not ground faults
have wires connected to the Network A terminals should
be designated as the service panel and located
accordingly.

First panel on Class B Last panel on Class B

network network

3-CPU3 3-CPU3 3-CPU3

TB2 TB2 TB2
NETWORK AUDIO NETWORK AUDIO NETWORK AUDIO
OUT IN A IN OUT IN A IN OUT IN A IN
A A B B A A B B A A B B

Make this the

service panel

Figure 2: Class B network data riser wiring (requires 3-RS485A or 3-RS485B)

3-CPU3 3-CPU3 3-CPU3

TB2 TB2 TB2
NETWORK AUDIO NETWORK AUDIO NETWORK AUDIO
OUT IN A IN OUT IN A IN OUT IN A IN
A A B B A A B B A A B B

Figure 3: Class A network data riser wiring (requires 3-RS485A or 3-RS485B)

P/N: 3100648 REV: 1.0 06AUG03 Installation Sheet

2/4 3-CPU3 - Central Processor Module
Field wiring connections
Network audio riser connections 3-CPU3
TB2
A 3-CPU3 equipped with a 3-RS485A or 3-RS485B card can
AUDIO AUDIO AUDIO AUDIO
distribute audio messages to other similarly equipped 3- A IN A OUT B IN B OUT
CPU3 modules by way of the network audio riser. TB2 on
the 3-CPU3 provides the terminal connections for connecting
to the network audio riser (Figure 4).
Connect the network audio riser to the 3-CPU3 as shown in
Figures 5 and 6. The AUDIO IN terminals provide an isolated
connection. The AUDIO OUT terminals are not isolated.
From
Notes AUDIO DATA PRIMARY
• All network audio riser wiring is supervised and power- on 3-ASU
limited.
• When connecting the network wiring, always wire the Figure 4: 3-CPU3 to 3-ASU wiring for single panel audio
isolated terminals on one CPU module to the non- applications (no RS-485 card required)
isolated terminals of another.

3-CPU3 3-CPU3 3-CPU3 3-CPU3

TB2 TB2 TB2 TB2
AUDIO AUDIO AUDIO AUDIO AUDIO AUDIO AUDIO AUDIO AUDIO AUDIO AUDIO AUDIO AUDIO AUDIO AUDIO AUDIO
A IN A OUT B IN B OUT A IN A OUT B IN B OUT A IN A OUT B IN B OUT A IN A OUT B IN B OUT

From
AUDIO DATA PRIMARY
on 3-ASU

Figure 5: Typical Class B network audio riser wiring (requires a 3-RS485A or 3-RS485B card)

3-CPU3 3-CPU3 3-CPU3 3-CPU3

TB2 TB2 TB2 TB2
AUDIO AUDIO AUDIO AUDIO AUDIO AUDIO AUDIO AUDIO AUDIO AUDIO AUDIO AUDIO AUDIO AUDIO AUDIO AUDIO
A IN A OUT B IN B OUT A IN A OUT B IN B OUT A IN A OUT B IN B OUT A IN A OUT B IN B OUT

From
AUDIO DATA PRIMARY
connections on 3-ASU

Figure 6: Typical Class A network audio riser wiring (requires a 3-RS485A card)

Installation Sheet 06AUG03 P/N: 3100648 REV: 1.0

3-CPU3 - Central Processor Module 3/4
Field wiring connections RS-232 serial port connections
Common relay connections A 3-CPU3 equipped with a 3-RS232 card can connect to
The 3-CPU3 provides three Form C relays (Figure 7) that ancillary devices that use RS-232 data communication
can be used to activate a circuit when any alarm, trouble, or (Figure 9). TB2 on the 3-CPU3 provides the terminal
supervisory point in the system activates. The connector pin connections for connecting to the 3-RS232 devices (Figure
designations reflect the state of the relay contacts while the 8).
panel is operating in its steady mode (all conditions normal). The 3-RS232 card provides two independent ports for
The trouble relay contacts also switch on loss of power. connecting serial devices.
Note: All common relay wiring is power-limited when Note: All serial port wiring is power-limited.
connected to a power-limited source.

System System System

Trouble Alarm Supervisory
relay relay relay 3-CPU3
for printer and FSB and
TB2
R C R C
Download data
R T T O R T T O
X X S M X X S M
1 1 1 1 2 2 2 2
N C N N C N N N C N
C O O A C O C
TROUBLE ALARM SUP

TB1
3-CPU3
To COM terminal on
listed equipment
To RxD terminal on
Figure 7: Common relay wiring listed equipment
To TxD terminal on
listed equipment

Figure 8: Serial port connections

3-CPU3 3-CPU3 3-CPU3

TB2 TB2 TB2

R C R C R C R C R C R C
R T T O R T T O R T T O R T T O R T T O R T T O
X X S M X X S M X X S M X X S M X X S M X X S M
1 1 1 1 2 2 2 2 1 1 1 1 2 2 2 2 1 1 1 1 2 2 2 2

DB25 male connector DB9 female connector DB25 female connector

rear view rear view rear view

Figure 9: Serial port wiring (requires a 3-RS232 card)

P/N: 3100648 REV: 1.0 06AUG03 Installation Sheet

4/4 3-CPU3 - Central Processor Module
Standard Components Section 5

RS-485 Communication Card Options

RS-
RS-485 CARD

Discontinued with older 3-CPU.

RS-
RS-485R CARD
Provides
Provides the
the data
data and
and audio
audio networks
networks for
for systems
systems
composed
composed ofof older 3-CPUs
3-CPUs and
and newer
newer 3-CPU1s
3-CPU1s and
and 3-CPU3s.
3-CPU3s.

Provides:
Provides: Class
Class A or
or B
B Network
Network Data
Data Riser
Riser
Class
Class B Network
Network Audio
Audio Riser
Riser

A retrofit card that permits newer 3-CPU1s or 3-CPU3s

to operate in systems containing older 3-CPUs.

RS-485 Communication Card Options

RS-
RS-485B CARD
Provided
Provided the
the data
data and
and audio
audio network
network for
for systems
systems
composed
composed ofof 3-CPU1
3-CPU1 and
and above
above only.
only.

Provides:
Provides: Class A or
or B
B Network
Network Data
Data Riser
Riser
Class
Class B Network
Network Audio
Audio Riser
Riser

Class B Audio Riser only.

RS-
RS-485A CARD Provided
Provided the
the data and audio
audio network
network for
for systems
composed of 3-CPU1 and above only.
composed of 3-CPU1 and above only.

Provides:
Provides: Class A or
or B
B Network
Network Data
Data Riser
Riser
Class
Class or B Network Audio Riser
A or B Network Audio Riser

Class A or B Audio Riser.

5-10 EST3 Series Student Workbook

Optional Components Section 6

3-BPS / 3-BPMON Parameters

Each Booster Power Supply provides an additional 24VDC, 7A source.

source.

Up to three Booster Power Supplies may be added to a single cabinet.

cabinet.

How many 3-
3-BPS assemblies can you add to a 3-
3-CAB7 cabinet?

Each 3-
3-BPS Assembly mounts on a footprint on the back of the chassis
beneath the rail assembly. The 3-
3-BPMONs should be installed in a slot
which supports the interconnecting cable lengths (slots 3 and 5).
5).

The 3-
3-BPMON is a local rail module which mounts on the rail assembly and
and accepts
a Control/LED Module. The 3-
3-PSMON and 3-
3-BPMON are not interchangeable.

3-SSDC and 3-SSDC1

Single Signature Device controller

Signature Circuit
connections

Filter Board (3-

(3-SSDC Only)

RJ11
Upload/Download
Line Interface Card
connector
Daughter Board

Ribbon Cable
Connector
for optional
control/display
module
Signature Controller Module
Front Back Mother Board

6-8 EST3 Series Student Workbook

Section 6 Optional Components

3-SDDC and 3-SDDC1

Dual Signature Device Controller

Signature Circuit 1
Connections
and
Filter Board (3-
(3-SDDC Only)

RJ11
Upload/Download Two
connector Line Interface Cards
Daughter Boards
Ribbon Cable
Connector
for optional
control/display
module

Signature Circuit 2
Connections and Signature Controller Module
Filter Board (3-
(3-SDDC Only)
Front Back Mother Board

3-SSDC, 3-SSDC1, 3-SDDC and 3-SDDC1

SIGA Loop Parameters
Local rail modules which support a Control/LED Display.

The 3-SSDC and 3-SSDC1 support

one Class B or Class A Signature Data circuit of up to
125 detector addresses and 125 Module addresses.

The 3-SDDC and 3-SDDC1 support

two Class B or Class A Signature Data circuits of up to
125 detector addresses and 125 Module addresses each.
each.

All four types provide 24VDC at 100mA for 2-

2-wire smokes.

An 3-
3-SSDC/3-
SSDC/3-SSDC1 can be easily converted to an 3-3-SDDC/3-
SDDC/3-SDDC1
respectively, by adding a second Line Interface Card and
downloading the appropriate loop database.

EST3 Series Student Workbook 6-9

Section 7

EST3 Series
Technician Certification Course
Section 7
Audio and Remote Annunciator Components

3-ASU Audio Source Unit

3-ASU Controller

Cover Assembly

3-ASU consists of two parts:

• Controller Unit which mounts on the left most footprint on the

back of chassis behind the cover assembly.

• Cover assembly which houses the microphones and

control panel.

EST3 Series Student Workbook 7-1

Audio and Remote Annunciator Components Section 7

3-ASU Audio Source Unit

The 3-
3-ASU comes installed in its own chassis unit in one of two ways:

• The 3-
3-ASU/3-
ASU/3-CHAS4 (shown above) with the 3-
3-ASU and a four
module space rail assembly.

• The 3-
3-ASU/FT (discussed later) with the 3-
3-ASU and a 3-
3-FTCU
and Firefighters Phone Control Unit (Not shown).
The 3-
3-ASU provides master paging, tone generator, digital messages,
and simultaneous 8-
8-channel digitized voice communications.

Typical 3-ASU wiring

To next panel
3-CPU Module 3-CPU PANEL CONTROLLER
It is important to note that Connect to TB2 on 3-CPU Module
Network Data Riser

Network Audio Riser

the Primary Audio Data out 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

of the 3-
3-ASU is connected to
Audio A Out on TB2 of the Speaker Activate
from SAN MIC II
3-CPUx for a single cabinet To terminals 14/13 Audio Out from
system without an RS-
RS-485 for single cabinet
non-networked
SAN-MIC II

option card installed. applications.

Wiring Notes
1. Maximum #14 AWG wire;
minimum #18 AWG.
NO CONNECTION

2. All shields, if used, must be

LOW LEVEL
PAGE OUT

continuous and insulated from 3-ASU SET FOR AC SUPERVISION

ground, except at the originating TO AUXILIARY
panel. AUDIO SOURCE

AUDIO DATA PAGE REMOTE MIC

PRIMARY SECONDARY TELEPHONE OUT KEY AUDIO AUX

1 14

TR RX TX
AUDIO DATA
PRIMARY SECONDARY TELEPHONE
PAGE
OUT
REMOTE MIC
KEY AUDIO AUX
RX TX

1 14
TB1
J1 3-ASU

Refer to installation sheets for the most current information. [3ASUIN3]

7-2 EST3 Series Student Workbook

Section 7 Audio and Remote Annunciator Components

3-ASU/FT Audio Source Unit with

Firefighters Telephone

3-FTCU Controller

Cover Assembly

Occupies one full chassis assembly

The Firefighters Telephone Control Unit (3-

(3-FTCU) has two parts:
• 3-FTCU Controller card which mounts on back of chassis.

• Cover Assembly which house Telephone Handset and control panel.

The 3-
3-FTCU provides a hardwired telephone riser for
independent 2-
2-way communication.

Typical 3-FTCU Phone Riser Wiring

47K EOL TWISTED
RESISTOR PAIR

15K EOL SIGA-CC1

Resistor
Class B
Wiring Notes
TO PHONES
1. Maximum #14 AWG wire:
minimum #18 AWG.
SIGA-CC1
2. All shields, if used, must be
continuous and insulated from
ground, except at the origination
TO PHONES
panel.
3. SIGA-CC1’s set to Personality
SIGA-CC1
Code 6.
4. 15K Ohm EOL Resistor required
for Class B Riser.
5. All wiring supervised and power TELEPHONE RISER
limited. DASHED WIRES REQUIRED TWISTED-SHIELDED PAIR
FOR CLASS A WIRING ONLY

NO
CONNECTION

CONNECT
SHIELDS
TO EARTH
GROUND

3-FTCU

Refer to installation sheets for the most current information.

EST3 Series Student Workbook 7-3

Audio and Remote Annunciator Components Section 7

Rail Chassis Interface Card

Power
and
Data
Connectors
3-FTCU

3-ASU Rail
Chassis
Interface
Card
The 3-
3-ASU Audio Source Unit Controller card and the 3-
3-FTCU Firefighters
Telephone Control Unit card mount on the rear of the chassis.
With either of these units installed, the Rail Chassis Interface Card is
used to interface power and communications from the rail assemblies
assemblies to
the 3-
3-ASU and 3-3-FTCU via this card’
card’s connectors.
The Rail Chassis Interface Card is mounted on the 1/2 footprint
standoffs on the right rear of the chassis.

3-ZAx Zone Amplifiers

NAC
Connections
1. Available in 20 Watt (3-
(3-ZA20A and 3-
3-ZA20B)
and 40 Watt (3-
(3-ZA40A and 3-
3-ZA40B).

2. Configurable for 25VRMS or 70VRMS

audio output.
3. Single slot Local rail module.
25V/70V
Jumpers 4. The 3-
3-ZA20B and 3-
3-ZA40B amplifiers
shown
set for 25V
provides one Class B 24VDC NAC circuit
which is configurable for strobes, visibles
or common alarm output.
5. The 3-
3-ZA20A and 3-
3-ZA40A amplifiers
provides one configurable Class A 24VDC
Backup
Amp NAC circuit.
Connections
Ribbon Cable
Connector
Audio for optional
Connections Front Back control/display module

7-4 EST3 Series Student Workbook

 Z:zone
A: AUDIO AMPLIFIERS 3-ZA20A, 3-ZA20B, 3-ZA40A, 3-ZA40B
20&40&95:WATT Zoned Audio Amplifiers
AOR B :CONNECTION CLASS
Product description Specifications
Space requirements: 1 rail space
Frequency response: 400 Hz to 4 kHz at ±3 dB
Harmonic Distortion: < 7%
TB1
24VDC
UNUSED UNUSED UNUSED NAC/B
+ -
UNUSED

Audio power Audio circuit

module Input: 8-channel, multiplexed digitized audio
subassembly
Wiring: Class B (Style Y) or Class A (Style Z)
Output: 20 or 40 W at 25 or 70 Vrms
Audio amp 25Vrms 70Vrms
Configuration
transformer jumper EOL resistor: 15 kΩ (internal on 3-ZA20A/40A)
subassembly 24 Vdc NAC circuit:
Wiring: Class B (Style Y) or Class A (Style Z)
J3
J4 Voltage: 24 Vdc nominal
Current: 3.5 A
Output gain
adjust EOL resistor: 15 kΩ (internal on 3-ZA20A/40A)
For special applications, refer to EST3 ULI/ULC
Compatibility Lists (P/N 3100427).
JP1
Configuration Wiring
1

JP2
1

jumpers
TB2
BACK-UP NAC/A NAC/B

- + - + S - + S - +

Termination: Wiring connects to removable terminal block

Max wire size: 12 AWG (2.5 mm sq)
Front view Rear view Operating environment
Temperature: 32 to 120 °F (0 to 49 °C)
Humidity: 93% RH, noncondensing at 32 °C
The 20 and 40 watt zoned audio amplifier modules are key Current ratings
components in emergency communication systems that Standby: 62 mA
consist of audible and visible notification appliances. Models Alarm: 1.12 A (3-ZA20A/20B)
are available in Class A and Class B versions. See Table 1 for 2.48 A (3-ZA40A/40B)
a list of model numbers. The amplifiers provide the following:
Installation instructions
• 20 or 40 watts of power
• Standard output line levels of 25 Vrms or 70 Vrms Caution: Operating the amplifier at an output greater than that
required by the speaker may overdrive the speaker circuit and
• A 1 kHz temporal (3-3-3) tone to use as an evacuation result in damage to the equipment
signal and a 20 SPM tone to use as an alert signal in the
event of a failure of networked audio distribution To install the amplifier:
Each amplifier is also provided with an independently
1. Remove all power from the panel.
controlled supervised, power limited 24 Vdc NAC circuit. This
facilitates the addition of visual notification appliances to audio 2. Set jumpers JP1 and JP2 on the audio power module
notification circuits. subassembly for 25 or 70 Vrms, depending on the input
required by the audio circuit speakers.
Each zoned audio amplifier requires one space on the rail
chassis assembly. JP1 JP2

Table 1: Models 25 Vrms 2 to 3 2 to 3

Number Description 70 Vrms 1 to 2 1 to 2

3. Set the jumper on the audio amp transformer
3-ZA20A 20 watt zoned amplifier
subassembly for 25 or 70 Vrms, depending on the input
Class A or Class B audio
required by the audio circuit speakers.
Class A or Class B 24 Vdc outputs
4. Slide the module into the required rail/slot position.
3-ZA20B 20 watt zoned amplifier
Class B audio 5. Gently push the module into the connectors to ensure
Class B 24 Vdc outputs good contact.
3-ZA40A 40 watt zoned amplifier 6. Secure the module to the rail by pushing in the top and
Class A or Class B audio bottom snap rivet fasteners.
Class A or Class B 24 Vdc outputs
7. Connect the field wiring.
3-ZA40B 40 watt zoned amplifier Notes
Class B audio
Class B 24 Vdc outputs • The gain control pot should be adjusted to the desired
output levels using a 1KHz signal after installation. Fully
counter clockwise is maximum gain and fully clockwise is
minimum gain.

Installation Sheet 27JUN07 P/N: 387463 REV: 4.0

3-ZA20A, 3-ZA20B, 3-ZA40A, 3-ZA40B - Zoned Audio Amplifiers 1/3
Wiring diagrams
Typical 25 or 70 Vrms notification appliance circuit wiring

Zone audio amplifier

TB1
BACK-UP NAC/A NAC/B
- + - + S - + S - +

[4] [5]

Class B (Style Y)

UL/ULC
S S listed
EOL
[2]

Class A (Style Z)

Figure-2: Typical 24 Vdc notification appliance circuit wiring

UL/ULC
LISTED
EOL
[2]

Class A (Style Z)

NOT NOT NOT 24VDC 24VDC

USED USED USED NAC/B NAC/A
- + + -
TB1

Zone audio amplifier

Notes
1. All wiring is supervised and power-limited
2. Install listed 15k Ω resistor on last device only when wired as Class B (Style Y) riser
3. Polarity designations on connector indicate output signal polarity for circuit supervision. The polarity reverses in an alarm
condition.
4. Shield required when audio riser and telephone riser share the same conduit
5. Twisted pair not required only when audio circuit riser shares conduit exclusively with 24 Vdc riser or in conduit by itself
6. A maximum of 10 Signature Series CC1 or CC2 modules may be installed on the speaker circuit
7. For maximum wire resistance, refer to Appendix B in EST3 Installation and Service Manual (P/N 270380).
8. Synchronization of Genesis strobes is accomplished through the use of G1M, G1M-RM, SIGA-CC1S, and SIGA-MCC1S
modules. Refer to EST3 ULI/ULC Compatibility Lists (P/N 3100427).

P/N: 387463 REV: 4.0 27JUN07 Installation Sheet

2/3 3-ZA20A, 3-ZA20B, 3-ZA40A, 3-ZA40B - Zoned Audio Amplifiers
Backup amplifier wiring

Backup amplifier First zone amplifier Last zone amplifier

on circuit on circuit
TB1 TB1 TB1
BACK-UP NAC/A NAC/B BACK-UP NAC/A NAC/B BACK-UP NAC/A NAC/B
- + - + S - + S - + - + - + S - + S - + - + - + S - + S - +

Notes
1. All wiring is supervised and power-limited
2. Backup amplifier must be rated greater than or equal to the other amplifiers to which it is connected and must be installed in
the same enclosure
3. Backup amplifier wiring must be rated greater than or equal to the field wiring used on amplifiers connected to the backup
amplifier
Typical wiring connecting to SIGA-AAxx audio amplifier

Zone audio amplifier Zone audio amplifier

TB2 TB2
BACK-UP NAC/A NAC/B BACK-UP NAC/A NAC/B
S S S S

Class A only TB1

CH1 Out

CH1 In
UL/ULC listed 15 kΩ EOL SIGA-AAxx
for Class B circuits only

CH2 Out
Class A only

CH2 In
TB3
UL/ULC listed 15 kΩ EOL
for Class B circuits only

From Signature controller or To next

previous Signature device Signature device

Notes
1. Configure the zone audio amplifiers for 25 Vrms
2. A maximum of 16 SIGA-AAxx audio amplifiers may be connected to the output of a single zone audio amplifier
3. Shield required when the audio riser wiring shares the same conduit as the telephone riser

Installation Sheet 27JUN07 P/N: 387463 REV: 4.0

3-ZA20A, 3-ZA20B, 3-ZA40A, 3-ZA40B - Zoned Audio Amplifiers 3/3
 EDWARDS® Catalog u Large Life Safety Platform

Signature Driver
Controller Modules
3-SSDC2, 3-SDDC2, 3-SDC1
Approvals
EST4 EST3

S3000 S3000

Overview Standard Features 7165-1657:

0186/0306
The 3-SSDC2 and 3-SDDC2 Signature Driver Controller • One or two circuit versions
modules provide an intelligent interface between the CPU
• Dedicated microprocessor control
module and Signature Series devices. Each module contains
its own microprocessor used to coordinate, process and interpret • Full digital communication
information received from and sent to Signature devices. Power • Specialized communication protocol
and communications is received directly from the control panel – Less sensitive to cable characteristics
rail assembly. The 3-SSDC2 Single Signature Driver Controller – Utilize existing wiring in most applications
module supports one Signature Data circuit, while the 3-SDDC2
Signature Dual Driver Controller module supports two Signature • Device location supervision
circuits. Both modules occupy one rail space in the fire alarm – Unexpected additional device addresses
control cabinet and provide removable field wiring terminals – Missing device addresses
to aid installation. – Switched device locations
– Programmed device parameters
Innovative design gives the 3-SSDC2/3-SDDC2 and Signature
devices truly “distributed intelligence”. Signature detectors and • Automatic nonvolatile as-built mapping
modules have their own on-board microprocessor communicating – Stores “actual” and “expected” device data
with the loop controller in a fully digital communication format. This – Stores physical connection sequence including “T” taps
increases the accuracy of the information coming to and from the • Automatic day/night sensitivity
loop controller by reducing the effects of capacitance and noise.
• Supports up to 250 intelligent Signature detectors
With decentralized intelligence much of the decision making moves and 250 Intelligent Signature Modules
from the loop controller to the devices. Advanced fire detection
algorithms processed within the Signature devices effectively end • Up to five 3-SDDC2s or ten 3-SSDC2s per node
unwanted alarms. Environmental compensation and multiple sens- – Maximum of 10 signature circuits per cabinet
ing element decision making operations are resident in the devices. • Removable field wiring terminal blocks
Intelligent devices allow the Signature Controllers to execute commu-
• Multiple survival modes — stand alone
nication and system functions with greater speed and low baud rates,
increasing the accuracy of information transmitted between the loop • Fully backward compatible with 3-SSDC, 3-SDDC,
controller and devices. 3-SSDC1, and 3-SDDC1
• Supports the full line of Signature devices, including
carbon monoxide detection

Page 1 of 6 D ATA S H E E T E85010-0130

Not to be used for installation purposes. Issue 1.0
Typical Wiring
3-SSDC2 and 3-SDDC2 Class B wiring

LIFT THEN
PULL HANDLE

LIFT THEN
PULL HANDLE

PULL
IN CASE
OF
FIRE

LIFT THEN
PULL HANDLE

PULL
IN CASE
OF
FIRE

LIFT THEN
PULL HANDLE

PULL
IN CASE
OF
FIRE

TB1
B B S A A SP B B
+ - H + - MW + -
KR
LOOP1 LOOP1 1 LOOP1

3-SSDC2 and 3-SDDC2 Class A and Class X wiring

1. For Class A wiring, isolator modules and isolator detector bases are required to prevent wire-
to-wire shorts on the signaling line circuit wiring from adversely affecting other segments of the
loop. Do not install more than 50 addressable devices between isolators, per NFPA 72.
TB1 2. For Class X wiring, isolator modules and isolator detector bases are required to prevent wire-
B B S A A SP B B
+ - H + - MW + - to-wire shorts on the signaling line circuit wiring from adversely affecting any devices of the loop.
KR
LOOP1 LOOP1 1 LOOP1
3. For Class X wiring, un-isolated devices must be mounted in a cabinet with isolators on the
incoming and outgoing wiring.

Engineering Specification
The communication format between the control panel and X with non-shielded, non-twisted wire. It must be possible
analog devices shall be 100% digital. to wire branches (T-taps) with Class B wiring.
Loop alarm recognition must be within 750 milliseconds of a The driver controller must be manufactured in accordance
device going into the alarm state, with system response time no with ISO 9001 standards.
greater than 3 seconds. All devices shall support remote testing. The system must have tolerance to multiple failures. There
It must be possible to wire the circuit as Class B, Class A or Class must be a standalone mode of operation that will ensure the
system is aware of alarms even if the local rail or main CPU fails.

Page 3 of 6 D ATA S H E E T E85010-0130

Not to be used for installation purposes. Issue 1.0