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Powerflex 753 over voltage (code 5) fault while running

Posted By E&I tech Steve Jul 21, 2026 08:51:00 PM
Found In Egroup: Drives, Motion Control & Low Voltage Products \ view thread
Powerflex 753 is controlling a 40 hp exhaust fan to a .4" H2O static pressure. It runs continuously. There is an AHU suppling outside air to this room. The drive varies between 15-45 hz to maintain setpoint of .4" H2O. The drive will sporadically fault on over voltage while running at setpoint. Stop ...

RE: Any one please suggest how to start powerflex 753 vfd with HIM.

Posted By E&I tech Steve Jul 21, 2026 08:25:15 PM
Found In Egroup: Drives, Motion Control & Low Voltage Products \ view thread
Parameter 324 [Logic Mask] dictates which ports (Drive, HIM, or Communications) are enabled to control the drive's start and direction. In my experience the HIM is usually port 3. Bit 3 would need to be set to a 1 to allow a start from the HIM.