Does the drive trip out with an F1 code immediately (before moving the motor)?

If yes, check the following potential causes:

  1. An output semiconductor in the drive is shorted. An output semiconductor short can be tested for by disconnecting the motor leads from the drive and running the drive at some speed. The drive will trip out with no motor attached if there is an output short. If you DO see an F1 code in this case, the drive will need to be sent back to the factory for repair. If you DO NOT see an F1 code while running the drive with no motor leads, continue checking the following potential causes.
  2. Motor problems. Specifically, check the following: A) The motor bearings (Can the motor shaft rotate freely?) B) A short in the motor (Check for shorts in the motor leads, leg to leg, and leg to ground.) C) Verify the motor windings are wired correctly (Are you properly hooked up for 230 or 460V?) D) Verify the motor is the correct voltage/Hz (Call PE® if you have a 120Hz motor.) E) Check to see if the current rating of the motor (or group of motors) is too large for the drive. F) Does the motor have internal brakes that receive power from the three motor leads? This type of motor should not be used with inverters unless the brake power leads can be brought out separately and powered from the line and not the drive.
  3. Mechanical brake not operating properly. Make sure that any mechanical brake that is used is releasing cleanly without any dragging. Some motors have internal brakes; make sure these are also operating.
  4. Large current draw when accelerating. The voltage boost setting A8 (C74 on the MX™ drives) may be too high and/or if the ramp down option is off, the pulse start boost setting (L31) may be too high. Solution: Lower the setting(s).
  5. Mechanical binding. Solution: Investigate source of binding and fix.

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