Motor Control Problems - Baldor DSM S Series Installation Manual

6.1.4 Motor control problems

Symptom
Controller outputs
appears to be
working, but will not
cause DSM to turn.
Controller reports
that the DSM is not
moving and drops
the enable line.
6-2 Troubleshooting
Check
Check that the DSM is powered.
Check that the logic connections between motor and controller are
correct.
Confirm that the sense of the enable input is correct to enable the
motor (section 4.3.1.3).
If the controller is expecting a feedback signal but does not receive
one, it may assume the DSM is not turning. This could cause the
controller to report a following error, to disable the DSM, or both.
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MN1940