Instructions and Advices

to use the electronic controller

Logik 9
ORIGINAL INSTRUCTIONS

(INDUSTRIAL CONTROL EQUIPMENT)

39UG
FILE: E316817

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INDEX

CAUTION Page 3

TECHNICAL FEATURES Page 4

MOUNTING Page 5

ELECTRICAL DRAWING AND LEGEND OF THE CONNECTIONS Page 5

CONNECTION SERIAL NET RS485 Page 8

WARNINGS TO THE WIRING RS485 Page 8

WARNINGS TO THE WIRING OF THE CONTROLLER Page 8

CONTROL PANEL Page 9

DESCRIPTION OF STATUS VISUALIZATIONS Page 11

QUICK SETTING TO START AND STOP PRESSURES Page 11

PROGRAMMING Page 12

ENTER PASSWORD Page 13

MENU 1 - = CHANGE PASSWORD Page 14

MENU 2 -  = PRESSURES Page 14

MENU 3 - = TEMPERATURES Page 14

MENU 4 - = WORKING TIMER Page 15

MENU 5 - = MAINTENANCE TIMER Page 15

MENU 6 - = COMPRESSOR CONFIGURATION Page 16

MENU 7 - = WORKING HOURS Page 18

MENU 8 - = ALARMS Page 18

MENU 9 - = RESET Page 19

ALARM CODES Page 20

OPERATING PRINCIPLE Page 21

MASTER/SLAVE OPERATION Page 23

MULTIUNIT OPERATION Page 24

WARRANTY Page 25

EDITIONS LIST Page 25

EC DECLARATION Page 26

CAUTION

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THE LOGIK 9 IS AN INDUSTRIAL CONTROL EQUIPMENT (NOT A SAFETY ISTRUMENT)
FOR THE OPERATION OF A SCREW COMPRESSOR WITH SOFTWARE CLASS A (see EN
60730-1).
THE INSTALLATION MUST BE MADE IN ACCORDANCE TO THE LOCAL AND
INTERNATIONAL STANDARDS AND REGULATIONS WHERE THE COMPRESSOR IS
MANUFACTURED.
THE INSTALLATION AND START UP OF THE CONTROLLER MUST BE CARRIED OUT BY
TRAINED PERSONNEL WELL KNOW IN THIS MANUAL.
THE CONTROLLER HAS TO BE USED IN STANDARD INDUSTRIAL ENVIRONMENT AND IT
CAN NOT BE USED IN EXPLOSION RISK ENVIRONMENT, MARITIME AND MILITARY
PURPOSE.
THIS MANUAL COULD BE SUBJET TO CHANGES; PLEASE CONTACT LOGIKA CONTROL
TECHNICAL OFFICE IN CASE OF DOUBT ON THE LAST VERSION.

ATTENTION
LA LOGIK 9 EST UN CONTROLE EQUIPMENT INDUSTRIEL (PAS UN INSTRUMENT DE
SECURITE) POUR LE FONCTIONNEMENT D’UN COMPRESSEUR A VIS AVEC SOFTWARE
DE CLASS A (voir EN 60730-1).
L'INSTALLATION DOIT ETRE EFFECTUEE CONFORMEMENT AUX NORMES ET AUX
REGLEMENTATIONS LOCALES ET INTERNATIONALES OU LE COMPRESSEUR EST
FABRIQUE.
L'INSTALLATION ET MISE EN MARCHE DE LA COMMANDE DOIVENT ETRE EFFECTUEES
PAR DU PERSONNEL QUALIFIÉ BIEN SAVOIR DANS CE MANUEL.
LE CONTROLEUR DOIT ETRE UTILISE DANS LA NORME ENVIRONNEMENT INDUSTRIEL
ET IL NE PEUT PAS ETRE UTILISE DANS UN ENVIRONNEMENT DE RISQUE
D'EXPLOSION ET MARITIME FINS MILITAIRES.
CE MANUEL POURRAIT ETRE SOUS RESERVE DE MODIFICATION; S'IL VOUS PLAIT
CONTACTER LOGIKA CONTROL TECHNIQUE BUREAU EN CAS DE DOUTE SUR LA
DERNIERE VERSION.

TECHNICAL FEATURES

- Industrial control equipment for the operation and management of screw compressors only, pollution degree 2.
- In accordance to EC Directives:
Directive:
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 LVD : 2014/35/UE
EMC: 2014/30/UE
RHOS: 2011/65/EU
based on the following harmonized standards applied:
SAF-EMC: EN 60730-1
RHOS: EN 50581
- In accordance to UL 508 (FILE #: E316817).
- Black auto-extinguishing box in ABS:
a) according CE: IP64 for the front panel and IP20 for the other parts;
b) according UL: type 1 and Type 12 for front panel mounting, installation in pollution degree 2 for the other parts.
- Inputs and outputs via terminal-block board to wires (250Vac – 10A – 12-24AWG) tightening torque: 8 Nm
- Working temperature: -10°C (14°F) ÷ 50°C (122°F), 90% RH (non-condensing)
- Storage temperature: -20°C (-4°F) ÷ 70°C (158°F).
- Power supply: 12 Vac  10% - 50÷60 Hz (power of the transformer’s secondary: ~6 VA) from safety transformer
- Max. current absorbed: ~ 200mA
- Visualization through LCD custom (10 digit 7 segments + 6 icons)
- no. 1 input for pressure transducer settable via software into input for electromechanical pressure switch
- no. 1 input for temperature probe to detect air end temperature (KTY/NTC).
- no. 4 key buttons: no.1 Start/Stand-by + no.3 function keys (up/down/enter)
- no. 4 opto isolated digital inputs from 12-24Vac to detect:
IN 1 = emergency stop button
IN 2 = OR alarms and/or thermal motor – thermal fan
IN 3 = phases sequence relay and/or thermal motor – thermal fan
IN4 = remote start/stop and/or thermal motor – thermal fan
- no. 5 outputs via relay with contacts 1.5A AC1 250Vac – 6A AC1 250Vac total:
RL1 = line contactor
RL2 = star contactor
RL3 = delta contactor
RL4 = load solenoid valve
RL5 = settable into alarm or fan contactor
- No.1 RS485: Multiunit/Master-Slave
- Non volatile memory to keep setting data, compressor status and working hours
- The electronic controller switched OFF due to micro-interruption over ~ 300ms

Weight: ~290g

Accessories:

- nr. 1 temperature probe KTY 13.5 with black cable TPE, length 2.5 m, working range –10°C÷130°C, resolution 1°C
to detect air end temperature.
- nr. 1 pressure transducer 4-20mA for working pressure control: 2 wires, AISI 316L stainless steel membrane,
working range 0 ÷ 15 bar, resolution 0,1bar, precision ± 0,1bar.

MOUNTING

Use the drawing below as overall dimensions to mount the controller.

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OVERALL DIMENSIONS

166,2 mm
ELECTRICAL DRAWING AND LEGEND OF CONNECTIONS

NOTES ON THE ELECTRICAL CONNECTIONS

Respect the working technical features and instructions on the electrical wiring; in special way both the
cables of the temperatures probes and pressure transducers must be isolated from the power cables and
proper RC filters must be placed on the contactors’ coils.
Besides pay attention low voltage and high voltage cables run on separate trunks.
On the back side of the controller there must be enough space for wiring and connectors.
The rear side of the controller must be protected against condensation, oil and dust.
Don’t wash the front panel by water injection; clean the front panel with a soft cloth using soap water.

LEGEND

Terminal M1: Power Supply and Analog Inputs

Poles 1-2 = power supply 12Vac  15% 50÷60 Hz
Poles 3-4 = temperature probe
Poles 5-6 = pressure transducer (pole no.5 = negative - pole no.6 = positive) or free contact to
the electromechanical pressure switch

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Terminal M2: Outputs via Relay
Pole no.1 = common relay – 24-230Vac
Pole no.2 = output relay RL1 – line contactor
Pole no.3 = output relay RL2 – star contactor
Pole no.4 = output relay RL3 – delta contactor
Polo no.5 = output relay RL4 – load solenoid valve
Polo no.6 = output relayRL5 – alarm output or fan contactor

Terminal M3: Opto-isolated Digital Inputs

Pole no.1 = common = N
Pole no.2 = input IN 1 – emergency stop button = L
Pole no.3 = input IN 2 – OR alarms: thermal motor, thermal fan etc. = L
Pole no.4 = input IN 3 – phases sequence relay = L
Pole no.5 = input IN 4 – remote start/stop = L
NOTE: the digital inputs you do not use have to be connected directly to 12-24V otherwise they generate
the related alarm

TERMINAL M4: Serial Bus RS485

Pole no.1: 0
Pole no.2: D-
Pole no.3: D+

EXAMPLE OF CONNECTION TO SECURITY PRESSURE SWITCH

Alarm related to security pressure switch , is joined to the lacking phase to allI°the digital inputs.
This is a shut off alarm: below you can find the connection drawing both to contactors 24Vac and/or 230Vac.
II
°
Contactors 24 Vac TRANSFORMER
If the operation of the contactors and 12 – 0
soenoid valves come through 24 Vac, the
digital inputs have to be connected to 24 Power supply to
Vac (see drawing on the right); on this way the controller
when the pressure switch opens due to Security pressure
high pressure, 24 Vac lacks and deenergize switch for High
all the contactors, solenoid valve and Pressure detection
digital: the controller detects all the digital
inputs opened and signal the alarm . 6
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Power supply to digital

inputs and utilities
24 – 0
Contactors 230 Vac I°
If the operation of the contactors and
TRANSFORMER
solenoid valves comes through 230 Vac, II
°
the digital inputs have to be connected to
12 Vac; next to the contact of the pressure 12 – 0
switch, place and energize an auxiliary
relay and put the contact in serie to 12 Vac
Power supply to
(L) (see drawing on the right).
the controller
When the pressure switch is closed, the
auxiliary relay with contact closed supply Security pressure
switch for High L N
power to the digital inputs; the power Pressure detection
supply of the controller is connected
before the contact of the relay.
When the pressure switch opens, the
Auxiliary relay
auxiliary relay opens power to the digital Power supply to digital
inputs; the controller detects all the digital inputs
inputs opened and signal the alarm . Power supply to
utilities
230 – 0

CONNECTION SERIAL NET RS485

To connect a serial net you have to pay carefully attention to some executive aspects:
1) Use flexible cable, shielded, twisted 22 AWG type.
2) Connect D- and D+ to two conductors of same couple and 0 to a third one (if available) or both conductors of
a second couple; don’t leave free couple of wires.
3) Connect the cable’s shield to only one end of 0.
4) DO NOT CONNECT the cable’s shield to the electrical ground of the plant.
5) The net MUST NOT BE LONGER than 400 meters.
6) Max connectable units through serial net RS 485 is 32.
7) In case of connection of more compressors via serial line RS485 you have to set the parameter  into menu
 (compressor setting).
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 8) The units on serial net RS485 must be connected without any reversal: pole D+ to D+, pole D- to D-, pole 0 to
0.
9) In case of connection with more than 2 units it is necessary to provide only one line without any deriving.
At the terminal both starting and ending the net it is possible to place (in parallel to D- and D+) a termination
resistance 120 Ohm.
In the picture below you can see the connection of 4 units on serial net RS485 by using a shielded cable with
two twisted couples.

NOTE TO THE WIRING: wrong wiring can damage both the controller and other utilities connected on the
serial net

WARNINGS TO THE WIRING RS485

1) The cable must be placed into a TRUNK SEPARATED by power cables and any potentially dangerous cables as
lighting plant and so on.
2) DO NOT PLACE signal cables next to power bar, lighting lamps, antennas, transformers;
3) Keep signal cables FAR 2 METERS MINIMUM from units with heavy inductive (distribution cabinet, motors,
inverter).
4) Don’t pull the cables with a strength over 12 Kg; stronger strength can damage the wires and reduce the
signal transmission on the line.
5) DO NOT: twist, knot, crush or fray the conductors.
6) Do not make any joints between lengths of cable: always use only one cable to connect any single unit to each
others. Strip the end part carefully, do not crush the cable next to core-hitches or safety supports.
7) Always respect the position of the colors at the both sides of the connection.
8) Once the wiring is complete, visually and physically check the cables are undamaged and properly placed.

WARNINGS TO THE WIRING OF THE CONTROLLER

1) The connection cables temperature probe and pressure transducer must be placed in a trunk separate from
the power cables.
2) The connections cables digital inputs must be placed in a trunk separate from the power cables.
3) The power cable controller must NOT be placed in the same trunk of the power cables.

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CONTROL PANEL

Group 1

. Group 2

 °

Group 4 Group 3

MEANINGS OF THE GROUPS

GROUP 1
Main Visualization and in case of alarm detected: working pressure detected.
Programming: setting value.

GROUP 2
Main Visualization: unit of measurement of the pressure (bar/psi).
Programming: code of the parameter the controller is visualizing
Till Programming: joined to Group 1 in case the controller has have to visualizes values expressed in thousands.

GROUP 3
Main Visualization: working temperature detected or compressor status.
Programming: code of the menu the controller is visualizing.
In case of alarm detected: code of the alarm detected.

GROUP 4
Programming: progressive number of the menu into the main flow.

MEANING OF THE ICONS 1 2

1.Fan working

.
2.Compressor loading - Compressor unloading (blinking)
3.Remote start/stop enabled
4.Alarm detected
5.Maintenance timer over
6.Unit of measurement of the temperature (Main Visualization) 7 3

7.Compressor working under Master/Slave operation

 °
4

6 5

DESCRIPTION OF STATUS VISUALIZATIONS

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 1) Power on and the display visualizes LG9 for few seconds and then the following:


2) OFF status switch to ON by pushing and the display visualizes the following:
I

.
 °

3) The possible status of the compressors are the followings :

Visualization
Status Icons
Pressure transducer =0 Pressure switch =1
Message  alternated into pressure
Wait for starting (timer ) Message  blinking
detected

Compressor starting Pressure detected blinking Message  blinking

Message  and temperature

Compressor loading Pressure and temperature detected
detected
Message  blinking and
Compressor unloading for
Pressure and temperature detected
reaching set temperature detected Blinking

Compressor in set Pressure detected + Message  Message 

Compressor going to stop alternated into pressure detected  blinking in case
(unload running)
remote start/stop
input opened

Compressor stop in case

 
remote start/stop
input opened
Compressor shutting off due + alarm code + alarm code
to alarm detection

QUICK SETTING TO START AND STOP PRESSURE

On the main visualization by pushing simultaneously you enable the quick setting to start and stop pressure;
the display visualizes the following:

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.

with start pressure value blinking; now you can change the set by and/or and confirm by , so LCD shift to
the following:

.

with stop pressure value blinking.
Follow the procedure to set the start pressure and confirm by .
Once the setting is confirmed the display shift back to the main visualization.

PROGRAMMING
When the compressor is OFF, on the main visualization you enter the main menu to the programming by pushing ;
pay attention, on this way only the menu/parameters without password (level 0) are visible and settable.
You can flow up and down the flow by using and/or ; below you can check out the menu flow with related

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 password level to access:
NOTE: in case of alarm visualized the button get reset function, so to enter the menu you have to reset the alarm
before.

MENU Password level Display

1-Password 1-2 
2-Pressures 0-1-2 
3-Temperatures 0-1-2 
4-Working timer 1-2 
5-Maintenance 0-1-2 
6-Compressor setting 1-2 
7-Working hours 0 
8-Alarms 0 
9-Reset 2 

NOTE
When the last menu is visualized by pushing you quit the flow and the display shift back to the main visualization;
after 120 seconds the password level is lost.
For security reasons after 120 seconds you push any button, the controller quit the programming procedure
automatically and load the setting values already modified.

ANTIPANIC FUNCTION: in any position of the flow you are by pushing for about 5 seconds the display shift back
to the main visualization.

By pushing you confirm the menu you need to enter to set; below is an example of visualization:

  DEFAULT VALUE OF THE PARAMETER

PARAMETER CODE
PROGRESSIVE NUMBER OF THE MENU YOU ARE IN

 MENU CODE

- By the buttons and/or you select the code of the parameter to set; once the last parameter is visualized if
you keep on pushing , the display shift back to the menu you are in.
- By the button you confirm the parameter and the setting value starts blinking to indicate the editing is enabled.
- By the buttons and/or you change the value and confirm the new one by .

ENTER PASSWORD
When the compressor is  by pushing for about 2 seconds you enter the label to select the password level and
set the menu and parameters protected by related password code.
The display visualizes the following:

 12


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 By the buttons and/or you can select the password level you need to enter (Service)  (Factory) and
confirm by the button : the display visualizes as many segments as the characters you have to enter and the first
one blinks:
- select  = no. 2 segments (default password 22)
- select  = no. 3 segments (default password 333)
NOTE: without password means that the menu/parameter is visualized and editable to level 0 only.

Once the password level has been confirmed you can set the first digit by the button and/or and confirm by
; now the next digit starts blinking.
To set the next digits, follow the same procedure as per the first one.
The password is accepted once you confirm the last digit so you can now set the parameter related to the password
level selected; in case you enter a wrong password code, the display visualizes the following message:



The message blinks for about 3 seconds to indicate the password code is wrong and shift back to the main
visualization.

PASSWORD FORGOTTEN
In case you miss the password code, you can restore the default codes (on both 2 levels) according the following
procedure:
take power off to the controller in case it is powered; then supply power again and keep on pushing for about 5
seconds.
The display visualizes the blinking message  to indicate the upload of the default password codes is in progress.

MENU 1 –  = CHANGE PASSWORD

In this menu you can change the password code related to two password levels available.
Passwords are: (Service) -  (Factory).
To enter the menu push and the display visualizes the following:

 
 13
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You can select the password level to change by using and/or then push to enable the modification; in case
you keep on pushing you shift back to previous menu.
Once you enalbe the modification the first digits blinks so you can change it by using and/or ; confirm the digit
by and the second one starts blinking to modification: follow the same procedure for all next digits.
Once the last digit has been confirmed, the new password code has been loaded.

MENU 2 –  = PRESSURES

Below all the parameters related to the pressure.

Parameter Description Setting range Default Password

 Pressure control 0 (transducer) ÷ 1 (pressure switch) 0 1
 Top range transducer 15 ÷ 60 15 bar 2
 High pressure (-0,5) ÷ (+0,5 ) 11 bar 1
 Stop pressure (-0,5) ÷ (+0,2) 10 bar 0
 Start pressure (-0,2) ÷ 3 8.5 bar 0
 Slave Start pressure 2,8 ÷ (-0,2) 8,3 bar 1
 Offset -2,0 ÷ +2,0 0 2
 Unit of measurement 0 () ÷ 1 () 0 0

NOTE: in case you set  = 1, parameters ÷are not visualized and during the operation the display visualizes
the working temperature and compressor status only.
is visualized only if the parameter (Master/Slave – Multiunit operation) = 1 or 2 into menu 6 (Compressor
setting).

MENU 3 –  = TEMPERATURES

Below all the parameters related to the temperature.

Parameter Description Setting range Default Password

0 (disabled) - 1 (KTY)
 Enable temperature probe 1 1
2 (NTC)
 High temperature (+2) ÷ 125°C 110°C 1
 Warning high temperature (+2°) ÷ (-2)°C 105°C 1
 Fan ON (RL5) 30 ÷ (-2)°C 70°C 1
 ΔT Fan OFF (RL5) 2 ÷ 20°C 10°C 1
 Low temperature -10 ÷ +15 0 °C 1
 Offset -10 ÷ +10 °C 0 °C 2
 Unit of measurement 0 (°) ÷ 1(°) 0 0

NOTE: the parameters and are visualized only if the parameter = 1 into menu 6 .

MENU 4 –  = WORKING TIMER

Parameter Description Setting range Default Password

 Star delta 2 ÷ 20 sec 5 sec 2
 Star/Delta timer 10 ÷ 50 ms 20 ms 2
 Delta timer 1 ÷ 900 sec 2 sec 2
 Unload timer 0 ÷ 10 min 4 min 1
 Safety timer 10 ÷ 240 sec 60 sec 2
 Master/Slave rotation 0 ÷ 200h 100 h 1
 Slave timer 1 ÷ 99min 5 min 1
 fixed or variable 0 (fixed) ÷ 1 (variable) 0 1

NOTE
: set 0 disables Master/Slave switch.
: it is possible to set a fixed or variable unload timer.
Fixed: when the pressure reaches set  (stop) timer  starts counting; when the timer is over if the pressure is still
over set  (start) the compressor stops; on the other hand if during the counting the pressure goes down set , the
compressors shift to loading again and timer  reset.
Variable: the starting the compressor runs the unload fixed cycle above; on the next unload cycle the controller keeps
the time that the pressure takes going down from set  to set : if this time (called tx), is lower than , on the

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next unload cycle  will be shorter (1 minute less) and so on up to a minimum time of 2 minutes.
As soon as tx is shorter than  modified, the setting value  is uploaded again as stop timer.
: this is the minimum time has to pass between stop and next start of the compressor.
The parameters andare visualized only if the parameter  =  o  (Master/Slave – Multiunit operation) into
the menu 6 (Compressor setting).

MENU 5 –  = MAINTENANCE TIMER

Into this menu you can set the maintenance timer.

Parameter Description Setting range Password Default

 Change air filter 100 ÷3000 1 2.000 h
 Change oil filter 100 ÷ 10000 1 2.000 h
 Change separator filter 100 ÷ 10000 1 4.000 h
 Change oil 100 ÷ 10000 1 8.000 h
 Check compressor 100 ÷ 10000 1 500 h
 Lubricate motor bearings 100 ÷ 29999 1 29999

NOTE
The timer counting is related to ON time of RL1 and it comes backwards; when the timer reaches 0, it goes on as
negative counting.
The hours storage comes every 15 minutes: if during the counting the power goes off, the part of 15 minutes is lost. If
you set = 10000 the related maintenance message is not detected.
By changing the set value the residual time is recalculated.
Example: CAF, set 2000h, the counter is 1600, it means 400h has passed from reset. If yu change the set, for example
3000, the counter will change into 2600.

MENU 6 –  = COMPRESSOR CONFIGURATION

Parameter Description Setting values Password Password

Restart
 Low voltage
0 (manual) ÷ 1 (automatic) 1 1

 Starts/hour 0 ÷ 60 2 2
 Air flow 1000 ÷ 10000 l/min. 0 0
 Security 0 (no) ÷ 1 (yes) 2 2
 Input IN2 0÷5 2 2
 Input IN3 0÷5 2 2
 Input IN4 0÷5 2 2
 Output RL5 0÷1 2 2
 Connection 0 (single) – 1 (Master/Slave) - 2 (Multiunit Slave) 1 1
 Compressor no. 0 ÷ 32 1 1
 Working mode 0÷1 1 1

MEANING OF THE PARAMETERS SETTING

:
0: when the power supply to the controller goes down 9.0Vac, the compressor switches off; when the power comes
back over 10.5Vac the display visualizes the alarm code  keeping OFF status; the compressor must be manually
restarted by the start button.
1: when the power supply to the controller goes down 9.0Vac, the compressor switches off; when the power comes
back over 10.5Vac, the compressor starts automatically once the time  without visualizing any alarm.

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:
this parameter set the max. starts the compressor (electric motor) can run in one hour.
In case the compressor reaches the set before one hour, it keeps on unload working till the hour time is over.
NOTE: if you set 0, the counting related to the starts/hours is cancelled.

:
here you can set the nominal air flow of the compressor.
This parameter is used on Multiunit operation by Logik33S / Logik200 to select the more efficient compressor according
the pressure drop in the net.

:
this parameter is related to the air filter change .
0 = disabled
1 = enabled.
If you set 1 (enabled) when the timer  is over, the compressor shut off and the display visualizes the alarm code ;
you can reset the alarm only after you have reset the timer into the related menu Reset.

÷: you can set the 4 digital inputs according the followings:
: default 0 = OR alarms
0 = OR alarms
1 = thermal motor
2 = thermal fan
3 = phases sequence relay
4 = remote start/stop
5 = remote load/unload

: default 3 = phases sequence relay

0 = OR alarms
1 = thermal motor
2 = thermal fan
3 = phases sequence relay
4 = remote start/stop
5 = remote load/unload

: default 4 = remote start/stop

0 = OR alarms
1 = thermal motor
2 = thermal fan
3 = phases sequence relay
4 = remote start/stop
5 = remote load/unload

:
0: RL5 is set as alarm relay and the parameters  and in menu  are not visualized.
1: RL5 is set as fan contactor and the parameters  and are visualized in menu .

:
this parameter allows to set the compressor operation according the followings:
0 (single) = compressor works standing alone.
1 (Multiunit Slave) = the compressor works as Slave unit (serial communication) into a compressors system all having
Logik controllers on board.
2 (Master/Slave) = the compressor works according Master/Slave operation (serial communication) together with
another compressor with Logik controller on board.

:
in case of serial communication with other compressors (compressors net), here you must combine the number of the
unit to detect the controller into the net.

:
this parameter is visualized only if Multiunit operation has been enabled.
It allows to take the compressor out of the compressors management without stopping the entire system: i.e. in case of
serve maintenance on the compressor.
0 (Multiunit operation available) = the compressor is managed into Multiunit operation.
1 (Multiunit operation not available) = the compressor is not managed into Multiunit operation; it works standing alone
by its own internal pressure sensor.

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MENU 7 –  = WORKING HOURS

Here you can check out: total working hours, load working hours, starts/hour of the compressor, nominal air
consumption and software release of the controller further to the maintenance timer in progress.
The display visualizes the name of the data (,, ,  ) and related value.
 = total working hours
 = load working hours
 = time to change air filter
 = time to change oil filter
 = time to change separator filter
 = time to change oil
 = time to check compressor
 = time to lubricate bearings
 = starts/hour
 = nominal air consumption
 = software release

By the buttons e/o you can flow the timer.

IMPORTANT NOTE
It is possible to modify boths “Working hours” and “Load working hours” only if you enable the password level 2.
By pushing the first digit starts blinking to edit; select the new one by and/or and confirm it by
to shift to the next one and set it according the same procedure.
Once you confirm the last digit, the new value is loaded into the controller.

MENU 8 – = ALARMS

Here it is the visualization of the last 20 alarms detected; the 21st erase the first one and so on.

 

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In the picture above: is the alarm code detected (make reference to the alarms list in this manual) and  is the
number of times the alarm has been detected.
is the number of the menu you are in, represented by the code .
By the buttons and/or you can flow the alarms list up and down.
On case there is not any alarm stored, the display visualizes the message “ ”.

MENU 09 –  = RESET

This menu is dedicated to the reset of the following menu:

 = Maintenance timer (password level = 1)
 = Alarms list (password level = 1)
 = Working hours (password level = 2)
 = General reset and upload of default values (password level = 2)
When you enter this menu by the button the display is the following:



By the buttons and/or select the menu you need to reset and execute it by pushing for about 3 seconds:
the display visualizes the blinking message  for a while to confirm reset in progress.
NOTE TO MAINTENANCE TIMER RESET: in case you confirm  (maintenance timer) the display visualizes the
following:



By pushing and/or you can flow the maintenance timers to allow reset one by one: to understand the meaning
of the nomenclature make reference menu “5 – Maintenance timer” page 14.
Execute the reset as above, by pushing for about 3 seconds.

IMPORTANT NOTE: General Reset is allowed when the compressor is OFF only.

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 ALARM CODES

SHUT OFF ALARMS

Reset to shut off alarms is allowed by pushing when compressor is absolutely OFF.

CODE DESCRIPTION CAUSE

 REVERSED PHASE Input used to sequence phase relay open (IN3)
 HIGH TEMPERATURE Temperature detected by the probe is over set 
 LOW TEMPERATURE Temperature detected by the probe is below set 
 TEMPERATURE PROBE FAILURE Temperature probe is faulty
 LOW VOLTAGE Power supply to the controller lower than9Vac
 SECURITY PRESSURE SWITCH All inputs IN1 ÷ IN4 open
 HIGH PRESSURE Pressure detected by the transducer is over set 
 PRESSURE TRANSDUCER FAILURE Pressure transducer is faulty
 EMERGENCY STOP BUTTON Input to emergency stop button open (IN1)
 THERMAL MOTOR Input used to thermal motor open (IN2,IN3 or IN4)
 THERMAL FAN Input used to thermal fan open (IN2,IN3 or IN4)
 OR ALARMS Input used to OR alarms open (IN2)
 SECURITY Parameter set = 1: reset timer  to be able to reset this alarm
Watchdog via MODBUS is activated: 5 seconds timeout is over without any
 FIELDBUS ERROR
reply from the Master (see MODBUS document)
Compressor set as per manual restart; in case of power off while the power
 POWER FAULT
comes back the compressor keeps off and visualizes this alarm code

NOTE: when the compressor shut off all the relays are switched off while RL5 switches on (in case into menu 6 -
parameter  = 0).

WARNINGS (VISUAL ALARMS)

Reset to warning is possible by pushing while compressor is working.

CODE DESCRIPTION CAUSE

 SET DATA LOST EEPROM failure or firmware upgraded
 FOREWARNING HIGH TEMPERATURE Temperature detected by the probe over set (automatic reset)
 WITHOUT TEMPERATURE PROBE Parameter  set 0 and display visualizes “---”
Compressor starts as many times as value set on .
 MAX. STARTS/HOUR
You can reset by increasing parameter starts/hour or waiting for expiring hour
 MULTIUNIT FAILURE Master unit failure or no communication to Master unit
 MASTER/SLAVE FAILURE NO serial communication between the compressors
 WITHOUT TEMPERATURE PROBE Parameter  set 0

NOTE: when warning is detected, RL5 switches on intermittently (in case into menu 6 - parameter  = 0).
MAINTENANCE CODES
Reset to maintenance codes is possible by pushing while compressor is working.

CODE DESCRIPTION CAUSE

 CHANGE AIR FILTER Timer over
 CHANGE OIL FILTER Timer over
 CHANGE SEPARATOR FILTER Timer over
 CHANGE OIL Timer  over
 CHECK COMPRESSOR Timer over
 LUBRICATION BEARINGS Timer  over

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NOTE
1) Shut off alarm codes have priority to warnings while warnings have priority to maintenance codes.
2) When you reset a maintenance code visualized on the display while related timer has not been reset yet into
appropriate menu , every power on the display keep on visualizing the same maintenance code.
3) Both alarm and maintenance code are visualized during all compressor status.
4) In case of maintenance messages, after carried out maintenance on the compressor you have to reset the counter
in the menu ; if you don’t do that, every 50 working hours or every time you switch on the compressor the
message is visualized again.

OPERATING PRINCIPLE

1) Power on:
a) the display visualizes message ;
b) all relays are OFF.
2) Compressor ON by pushing start button and the display visualizes the pressure detected (according setting on
parameter ), working temperature and compressor status: the display visualizes to indicate RL4 status (load
solenoid valve).

Safety timer 

By pushing the stop button the compressor stops according the following procedures:
a) If the compressor is running load shift to unload for the time set on ; during this counting restart by start button
is allowed.
When time  is over the compressor stops and the display visualizes the message ;
b) if the compressor is running unload and  counting is higher than , once  is over the compressor stops
and the display visualizes the message ;
c) if the compressori s running unload and  counting is lower than , the compressor stops and the display
visualizes the message  while is over only;
d) if the compressor is OFF while it has reached the pressure set, it stops and the display visualizes the message ;
When the compressor stops and the display visualizes the message , timer  starts; during this counting in
progress if you push the start button the message  starts blinking alternating the pressure (according the set on
parameter ) and the compressor will start when timer  is over only.
In case the compressor stops due to shut off alarm, timer  starts; during timer in progress if you reset the alarm and
push the start button, the message  starts blinking alternating the pressure (according the set on parameter )
and temperature detected and the compressor will start when timer  is over only.

Remote start/stop
If you set one of the input (IN2 – IN3 – IN4) as remote start/stop when the compressor is ON by start button if the
I
input related to remote start/stop opens the display visualizes the message  with related icon and the
compressor switch to unload working according the same principle and time related to the pushing of the stop button
above.
When the compressor switch from load to unload working through remote start/stop the display visualizes the message
 alternating the pressure (according the set on parameter ) and the temperature detected.

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Load solenoid valve operation (RL4)
1)  set as fixed time = 0
When the pressure reaches stop set, RL4 switches OFF and the display visualizes the pressure (according the set on
parameter ) and the temperature and  starts; once the timer is over, if the pressure is not lower than the
start set, the compressor stops; during timer in progress if the pressure goes down start set, the load solenoid
valve RL4 switches ON and the display visualizes the pressure (according the set on parameter ) and the
temperature while timer  erases.
2)  set as variable time = 1
The starting the compressor runs the unload fixed cycle above; on the next unload cycle the controller keeps the
time that the pressure takes going down from set  to set : if this time (called tx), is lower than , on
the next unload cycle  will be shorter (1 minute less) and so on up to a minimum time of 2 minutes.
As soon as tx is shorter than  modified, the setting value  is uploaded again as stop timer

Fan operation ( = 1)

When delta contactor is ON (RL3), the fan contactor (RL5) is operated according the following principle:

a) if the air end temperature is equal or higher than the set value on the parameter  = RL5 ON;
b) if the air end temperature is lower than the value ( – ) = RL5 OFF.

Restart after black out

Menu parameter 
Manual:
in case of black out when the power is restored, the compressor does not restart automatically and the display
visualizes the message ; after you reset the alarm message by the button the compressor shift to RUN position.
The alarm code is stored into the alarm list.
Automatic:
in case of black out when the power is restored the compressor restart from the status previous to black out: if the
compressor was ON it restart according the principle above, after the timer  is over; during  in progress the
display visualizes the blinking message . Anyway the alarm code is stored into the alarm list.

MASTER SLAVE OPERATION

Master/Slave operation allows to put two compressors in communication via serial line for the optimal management on
air consumption.
NOTE: Master/Slave operation is allowed only between two compressors equipped with Logik controller.
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Above all check out the compressors are in communication through the proper serial port terminal at disposal.
Check into menu  the parameters  (timer to shift Master into Slave and Slave into Master) and  (timer to start
Slave compressor in case Master does not reaches the stop set after first start up) are set according your need.
If the working hours difference between the two compressors is higher than set , the machine having less working
hours keeps on working till it reaches the same hours of the other + the working hours set on ; after this time only
the Master Slave shift is activated.
During Master/Slave operation the following parameters are common to both compressors:
---, Manual / Automatic restart (), timers  and .
Changing one of the above parameters on one compressor, modification is transferred automatically to the other.

Pushing the Start button of one of the two compressors both are activated
Pushing the stop button of one of the two compressors both are put in OFF

Slave compressor operates only if:

1) First start up Master does not reach the stop pressure until time set on .
2) Pressure goes down set on .
NOTE: the compressor stops when it reaches the pressure set .

Master Slave shift when:

1) timer set on  is over.
2) In case of shut off alarm on Master unit.

NOTE
- In case you have to serve one of the two compressors before to stop it you have to set both units for standing alone
operation (menu  - parameter = 0) and then set again Master/Slave operation after maintenance (menu  -
parameter = 1).
- In case of serial line failure both compressors are Master to work standing alone.

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MULTIUNIT OPERATION

Multiunit function (configured on a net of Logik controllers up to 5 units max.), allows the cooperative operation of the
compressors managed.

All the controllers must be connected on bus RS485 and you have to set a MODBUS address to each one: pay attention
addresses must be different one to one. You can choose the addresses into a range from 1 to “n”, where “n” is the
number of controllers into the net.

It is strictly necessary one of the compressors is configured as "Master Multiunit" and this unit must have MODBUS
address = 1.

Till on Master unit you set the number of “Slaves": in other words the other compressors into the Multiunit net.

NOTE: Master unit CAN BE Logik31-S or Logik33-S ONLY.

Till on Master unit you set the operating principle amongst: Smart, Balance Hours or Priority (for further details make
reference to the manual of the Master controller).

The parameters of Logik9 interested to the Multiunit operation are the followings (menu 6 ):
- : set 2 to operate Logik9 as Multiunit Slave.
- : set a value between 2 and n, where n is the number of compressors into the Multiunit net.
Pay attention to set different addresses into the different controllers.
- : it is the air flow (Liters/minutes) of the compressor; Master unit needs this data to match the best compressor to
operate in relation to the air consumption of the plant, in case of Smart operating principle.

- : in case you need to carry out maintenance, if you set this parameter = 1, you can exclude the compressor from
the Multiunit operation and stop it to serve.

During Multiunit operation the display shows the icon on the main visualization.

The pressure detected is the one Master detects and this detection is used to operate/manage the compressors
according the air demand from the plant.
Icon blinks in case of communication error to the Master or pressure transducer failure till on the Master unit.

If the remote start/stop inputs on Master opens, all Multiunit net switch to stand-by status and the display shows
on the main visualization.
In case the compressor is not under maintenance ( ≠ 1), if you push ON/OFF button on Logik9, all the compressors
into Multiunit net start/stop through a command sent to Master.

Further information on the management and operation of the compressors, make reference to the instruction manual
of the Master unit.

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WARRANTY TERMS

24 (twenty-four) months from the production date printed on the label of the serial number.

Temperature probe is not included in the warranty terms.

Both working and technical features of the controller must be fully respected: the warranty declines if the controller
has been opened or repaired by unauthorized personnel.
Operation or modification different from the original, wrong electrical wiring or bad assembling can be cause of failures
or malfunctioning of the controller; in these cases both warranty and own technical features of the controller declines.

Technical features, drawings, and any other document in this manual are property of Logika Control that forbid any
reproduction, even partial, of text and illustrations.

On its unquestionable judgement, Logika Control reserves the authority to modify the product to improve operation
and performance, besides to the right to withdraw the product from the production, in any time and without notice.

REVISION INDEX
Revision 0 = Issue

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