Service manual

Connections, continued
The air conditioner can operate as a stand alone cooling system. For enhanced usage, it is
possible to connect an external display with keypad.
See below table for options
Connection Usage Specication
Alarm 1
This output will toogle state open/close if
any operation errors occur.
Default open OR default close can be set
via a jumper on the PCB.
Factory setting is normally open
Potential free
Max. 42 VAC or 60 VDC. /
500mA
Galvanic isolated (500V)
AC 1
This output will toogle state open/close
if highest temperature limit setpoint is
exceeded.
Default open OR default close can be set
via a jumper on the PCB.
Factory setting is normally open
Potential free
Max. 42 VAC or 60 VDC. /
500mA
Galvanic isolated (500V)
Digital input 1
This input can control and overrule some
operation parameters. See more in the
parameters list
Active when low (0V)
0/12V DC
Internal pull up
Max. 10mA
Digital input 2
This input can control and overrule some
operation parameters. See more in the
parameters list
Active when low (0V)
0/12V DC
Internal pull up
Max. 10mA
Hotspot sensor
Temperature sensor for placing inside the
enclosure, in a hotspot zone if required.
NTC -30 to 85°C
(-22 to 185°F)
Connections
This illustration shows the external connections to the controller
1=Gnd
2=B
3=Gnd
4=A
5-6=12v line pwr
7-8=line pwr gnd
TTL
SD
J2
J7
J4
J1
RS 485
J15
J5
J11
J16
J22
3: Supply GND
2: NC
1: Supply 12V
8: Evap out sens GND
7: Evap out sens signal
6: Evap in sens GND
5: Evap in sens signal
4: Cond sens GND
3: Cond sens signal
2: Ret. Sens GND
1: Ret. Sens signal
4: Voltage sensor
3: Voltage sensor
2: Current sensor
1: Current sensor
6: +12V
5: +12V
4: \B
3: \A
2: B
1: A
Valve
Relay drive out
0/12V DC 200mA
Fan 1
Fan 2
Fan 3
External
interfaces
Alarm
AC 1
Power sensors
Temp sensors
NTC -30 to 85°C
(-22 to 185°F)
Supply
6: Cond fan relay out.
5: Cond fan relay 12V
4: Heater relay out.
3: Heater relay 12V
2: Compressor relay out
1: Compressor relay 12V
4: GND
3: Tacho
2: PWM
1: NC
4: GND
3: Tacho
2: PWM
1: NC
3: GND
2: Tacho
1: PWM
9: Hotspot sens GND
8: Hotspot sens.
7: Dig GND
6: Dig2 input
5: Dig1 input
4: AC1 relay contact
3: AC1 relay contact
2: Alarm 1 relay contact
1: Alarm 1 relay contact
Standard shielded ethernet
cable (568A termination)
Accessory
TTL interface
(galvanic isolated)
NTC -30 to 85°C
(-22 to 185°F)
Active low
max 12V DC/10mA
Max. 42 VAC or 60 VDC. /
500mA. Default normally
open - jumper changeable
Max. 42 VAC or 60 VDC. /
500mA. Default normally
open - jumper changeable
Fig. 7
Connections
illustration
086161 • Version 1.0 • 15.07.2014
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en