DK-45 Kullanım Kılavuzu V1.0 (22.09.2016)
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The multi-compressor mode is designed for cases where more than 1 compressor is needed to supply
the necessary compressed air.
In case of low air demand, the multi-compressor mode turns on only the necessary number of
compressors, providing energy efficiency, cost control and equal aging of compressors.
The controller allows a maximum of 8 compressors to operate in parallel.
In multi-compressor mode, the communication between controllers runs on the serial port. Devices are
interconnected using special RS-485 converters provided by the controller manufacturer.
The multi-compressor more is enabled by setting the parameter B.01 Modbus Address to 1. Other
compressors in the group must have consecutive addresses. Unused addresses are not allowed.
System operation in multi-compressor mode:
1. If communication between controllers is lost, compressors resume independent operation.
2. The youngest of controllers will become the master and runs continuously for E.04 and E.05
values. Other compressors enter into service depending their engine hours.
3. If any of compressors becomes younger than the master by B.04 Master Change Timer, then
this controller becomes automatically the new master.
4. If an alarm occurs on the master controller, then another controller will become the new master.
5. When the pressure falls below E.05, the master compressor runs immediately. Other
compressors will run in the order of their run-hours (youngest first) with delays of B.03/8.
6. If the pressure is above E.05, but below (E.04+E.05)/2 at the expiration of B.03, then controllers
will enter into service with delays of B.03/4.
7. When the pressure approaches E.04, controllers will quit the system in the order of their age
(oldest first).
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