Bitzer CM-RC-01, Reference Manual

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v. 3.0 Reference guide
Compressor Control Module CM-RC-01
3.0
2 / 44
Content
1.
Read this first! 4
1.1 Reference guide 5
1.2 Safety 5
2. General 6
3. Definitions 7
4. Functions 8
4.1 Control functions 8
4.1.1 Motor start 8
4.1.2 Oil heater 9
4.1.3 Cylinder head and motor cooling 9
4.1.4 Capacity control 10
4.2 Monitoring and diagnosis 10
4.2.1 Motor temperature 10
4.2.2 Discharge temperature 11
4.2.3 Oil supply 11
4.2.4 High pressure handling 11
4.2.5 Pressure limits (option) 11
4.2.6 Application limits (option) 12
4.2.7 Short-cycling warning 13
4.3 Datalog 13
4.3.1 Alarms 14
4.3.2 Events 14
4.3.3 Datalog information 14
4.3.4 Periodic data 14
4.3.5 Statistics and counters 14
4.3.6 Accumulated operation counters 15
4.3.7 Capacity load 15
4.3.8 Daily counters 15
4.3.9 Runtime statistic 15
4.3.10 Compressor start statistic 15
4.4 BEST software 16
4.5 Communication 16
5. Control of the CM-RC-01 17
5.1 Commands and setpoint 17
5.1.1 Command Start 17
5.1.2 Setpoint
– and speed changes
17
5.2 Enable serial control 18
5.3 Required signals to start the compressor 18
5.3.1 Digital and analogue signals 18
5.3.2 Serial control (Modbus) 18
5.4 Control Word bit definitions 18
5.4.1 Data valid bit 19
5.5 Examples of Serial Control Word setups: 19
5.6 Status Word bit definitions 19
5.7 Setting the serial setpoint 20
5.8 Serial Control Timeout Function 20
6. I/O List for CM-RC-01 21
7. Drawings 23
8. Standards 24
9. Alarm system 25
9.1 Alarm severity types 25
9.2 Fault reset types 25
9.3 Alarm list 26
10. Programming and monitoring 29