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Why will the ATV312 drive not run the motor with a run command present?

Issue:
The ATV312 drive will not run the motor, with a run command present.

Product Line:
ALTIVAR 312

Environment:
All

Cause:
No output voltage

Resolution:
Verity line voltage and control voltage is present:

  • Measure AC line voltage phase to phase
  • Measure DC voltage between the +24 terminal and the COM terminal

Verify mode of operation remote or local modes:

  • If the red LED's on the left-hand side of the drive's display are:
    • Off- The drive is in remote (terminal) control
    • Scrolling (flashing in sequence)- The drive is in local control
    • Flashing together- The drive is in local, programming mode. It will not run in this mode. Hold down the ESC key for 2-3 seconds to return to local mode

Verify the run command is valid: Measure DC voltage between LI1/LI2 and COM
Verify the speed reference is valid: Meaure DC voltage between AI1/AI2 and COM
Verify the drive state and status: ​i.e. RDY state, faulted, or some other state.

Schneider Electric Việt Nam

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