LEESON Chassis Mount PWM Control: M1740009.00 - Manual (Page 29)

23 Troubleshooting
Motor does not run
1. Check for blown fuses or tripped circuit breaker.
2. Verify that the speed adjust potentiometer is not set to zero
speed position.
3. Verify that the inhibit terminals (H1 and H2) are not shorted
together.
4. Verify that the drive is receiving AC line voltage.
5. Check that the drive is not in current limit. The red current limit
(CUR LIM) LED must be off. If the red current limit LED is on,
verify that the motor is not jammed. It may be necessary to
increase the TORQUE setting if it is set to a value lower than
the current rating of the motor.
Fuses or circuit breaker blows
1. Check all wiring for shorts, grounds, or misconnections.
2. Check that the drive is configured to match the motor rating.
3. Check that the motor is not jammed or restricted from
movement.
4. Check that the fuse size is correct for the motor being driven.
Motor runs too fast at the maximum speed setting
1. Check that the MIN SPD and MAX SPD setting are not set too
high.