Bitzer CM-RC-01

v. 3.0
Reference guide
Compressor Control Module CM-RC-01
3.0
22 / 44
Connector
Name
Type/
Function
Logic
Description
Psuc
CN12
+5V Supply
Signal
GND
Supply
Input
Ground
Pressure
+5 VDC; max 10 mA
1 - 35 bar abs.; 0 - 5V ratio metric; accuracy ±1% F.S.
0V
+5V Supply
Signal
GND
Supply
Input
Ground
Pressure
Suction pressure. Sensata 2CP5-71-49 (abs) or
equivalent
+5 VDC; max 10 mA
0 - 13 bar abs.; 0 - 5V ratio metric; accuracy ±1% F.S.
0V
Cap. Input
0-10V
CN13
Input
GND
Input
Ground
Capacity
0 – 100 % capacity; 0 – 10 V input; Rin 39 kΩ;
accuracy ±2%
0V for Capacity input only; 100 Ω safety Rin
RS485
CN14
DATA+
DATA-
Supply In
GND
RS485
RS485
Supply
Ground
Serial
Serial
Optional
Ground
Modbus (RTU) serial communication; DATA+
Modbus (RTU) serial communication; DATA-
Optional 24 VDC supply
Ground for serial communication
Note (1): Max 500 VA total for the 6 control outputs.