Bitzer CM-SW-01 User Manual

8 SG-150-1
3.2.2 Discharge temperature
A temperature sensor is mounted on the discharge side of the compressor; the CM-SW-01 will open the
relays and break the safety chain if the discharge temperature threshold is exceeded.
3.2.3 Oil supply
The oil supply monitor is configured for oil level (OLC-D1) monitoring. Actual status is always accessible via
Modbus.
If an oil level fault is detected, the status is immediately updated via Modbus. However, the first 90 seconds
after compressor start, the fault signal is not activated. If the oil level is still too low, the CM-SW-01 releases
the fault relay and locks out immediately.
The OLC-D1 module (24 V version) must be used for the oil level detection.
A warning signal is set immediately if the compressor is running and the OLC input is open.
The oil fault alarm must be externally reset by either powering off the device for minimum 5 seconds or
sending a reset command on the serial bus.
3.2.4 Short-cycling warning
To protect the motor windings, the module will give a warning if the compressor is started too many times
within 1 hour, but the compressor will not be locked.

Bitzer CM-SW-01 Specifications

General

Brand	Bitzer
Model	CM-SW-01
Category	Control Unit
Language	English