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Product description
2.4
Compressor control
Compressed air outlet
Fig. 2.4: BLUEKAT functional diagram including compressed air flow direction
2.4 Compressor control
Network pressure
For the compressor, the pressure downstream of the non-return valve is
known as the network pressure. The control system switches the compressor
on and off during operation depending on the network pressure.
Operating states
All screw compressor controls are based on three basic operating states:
1. Load operation
–
The compressor delivers its maximum amount of compressed air.
–
It consumes its maximum amount of energy.
2. Idling operation
–
The compressor runs but does not deliver any compressed air.
–
It consumes approx. 75% less energy than in load operation.
–
When compressed air is required, it switches to load operation with out
delay.
–
Idling operation reduces switching frequencies which can damage the
drive motor, and reduces wear of the system.
3. Standstill ready for operation
Page 24
–
The compressor is standing still but ready for operation.
–
When compressed air is required, it switches automatically to load
operation.
Operating instructions for S 31-3...S 150-3 series screw compressors