Monitoring and protective functions
The compressor module monitors the signals from several sensors:
| Monitored function | Sensor |
|---|---|---|
Motor temperature (standard) | Motor temperature sensor (B03.. B08) | |
Discharge gas temperature (standard) | Discharge gas temperature sensor (B02) | |
| Application limits (option): Condensing and evaporation temperature |
Low and high pressure transmitters (B51 and B50) |
Low pressure (option) | Low pressure transmitter (B51) | |
High pressure (option) | High pressure transmitter (B50) | |
Oil supply (standard) | Oil level monitoring with OLC-D1 (B30) | |
Oil level in compressor (option) | OLM-IQ-AS (B43) | |
Compressor switching frequency (standard) | integrated in CM-RC-01 |
The compressor module compares the measured values with programmed data. It outputs messages via Modbus and signals the operating status via LEDs in different colours. In case of operation outside the application limits, lack of oil or excessive motor temperature, the compressor is switched off, Monitored functions. The module issues warnings if the compressor starts too often or if the minimum running time or the minimum standstill time is not reached.
If the OLM-IQ-AS is operated, monitoring of oil supply is not mandatory. It does, however, offer further protection.