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34
Troubleshooting
Line fuse does not blow,
but the motor does not run.
Motor does not stop
when the speed adjust
potentiometer is full CCW.
Motor runs in the opposite
direction (non-reversing
drives).
1. Speed adjust pot or
reference voltage is set
to zero speed.
2. INHIBIT terminals are
jumpered.
3. S2 is shorted to S1.
4. Drive is in current limit.
5. Drive is not receiving
AC line voltage.
6. Motor is not connected.
MIN SPD setting is too
high.
Motor connections to A1
and A2 are reversed.
1. Increase the speed adjust
potentiometer setting or
reference voltage.
2. Remove jumper from
the INHIBIT terminals.
3. Remove short.
4. Verify that motor is
not jammed. Increase
TORQUE setting if they
are set too low.
5. Apply AC line voltage
to L1 and L2.
6. Connect motor to A1
and A2.
Calibrate MIN SPD.
Reverse connections to A1
and A2.
Problem
Possible
Causes
Suggested
Solutions
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