Backup interlock for variable-frequency motor water pumps?
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The 1# variable-frequency pump is in operation, while the 2# variable-frequency pump is in standby mode and connected in a interlock configuration. When the motor of the 1# pump fails, the 2# pump starts automatically as part of this interlock. Does the frequency of the 2# pump need to be increased manually from 0, or is it increased automatically?
No manual intervention required; automatic adjustment is possible, and it can be controlled from the center console
You can give it a try, either by finding your interlock diagram or the control interlocks in the program – it should be added automatically. This can have different designs
Automatic or manual should both work. It depends on your process requirements
Thank you all for your replies. If it is added automatically, at what level will it stop? Is the frequency of addition determined by the pressure at the water pump outlet? I’ll go back and check the logic.