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Can ATV312 drive be programmed to have a 3-contactor bypass?
ALTIVAR 312, ATV312
ATV312 is not available as an enclosed product and there are no programming options for a 3-contactor bypass control. However, the drive relay can be configured for drive running that can pull in a DOC drive output contactor (aux contact) to satisfy a run permissive (assigned to a logic input). The bypass and Isolation contactor are controlled through an external control circuit.
Mostly controlled by the control circuit not the drive. In the EFLEX design w/ bypass, the ATV312 drive would connect the same way as an ATV61. LI2 is assigned to run permissive (nSt) which is satisfied the the DOC contactor.