How do you handle disconnects in the field and a VFD? I was thinking of taking out the enable with the AUX contacts on the drive. My drives are Safe-Off drives so do I kill the safe-off instead? I will monitor the drive for running and faulted. These are forward only applications.
If I am giving the drive an enable and run I should have a NOT FAULTED and a RUNNING feedback. If I don't get a RUNNING and a NOT FAULTED I will drop out the signal to RUN ,ENABLE, and SAFE-OFF.
If I kill the safe-off i think if faults the drive. Causing someone to manually reset the system. Not necessarily a bad thing if the drive is running and someone cycles the disconnect in the field. They are trying to open a disconnect under a load. NOT a good thing for a standard disconnect.
If I kill the enable the drive will coast to a stop. They can close the disconnect and restart the system no problem.
What are you thoughts
If I am giving the drive an enable and run I should have a NOT FAULTED and a RUNNING feedback. If I don't get a RUNNING and a NOT FAULTED I will drop out the signal to RUN ,ENABLE, and SAFE-OFF.
If I kill the safe-off i think if faults the drive. Causing someone to manually reset the system. Not necessarily a bad thing if the drive is running and someone cycles the disconnect in the field. They are trying to open a disconnect under a load. NOT a good thing for a standard disconnect.
If I kill the enable the drive will coast to a stop. They can close the disconnect and restart the system no problem.
What are you thoughts