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What will cause an enclosed E-Flex or M-Flex drive to run all the time when the control switches are in the off position?

Published date: 11 January 2019

Issue:
Conditions that allow the E-Flex or M-Flex drive to run all the time when the control switches are in the off position?

Product line:  
EFLEX, MFLEX, Enclosed products

Environment:  
All enclosed drives and soft start

Cause:
Loss of control of the VFD

Resolution:
1). Verify the start circuit is not energized
2). Verify the unit is not in local control via the keypad
3). Verify the run command on the VFD/soft start has not been bypassed by removing the wire from start terminal on the VFD or soft start inside the enclosure

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