Recommended start and stop sequences
The speed ramps at compressor start and stop should be neither too fast nor too slow.
- During start, the minimum frequency of the compressor should be reached in 1 .. 2 sec. This enables a smooth start and at the same time sufficient oil supply to the compressor. The minimum frequency for each compressor model is listed above (Application range).
- When stopping, the compressor should slow down evenly and go from minimum frequency to a standstill in 1 .. 2 sec.
In the Varipack, suitable sequences are predefined.
During operation, frequency changes should be much slower than during start and stop (Configuration of the frequency inverter).