38
Troubleshooting
1. MIN SPD and MAX
SPD settings are too
high.
2. Field connections are
loose (shunt-wound
motors only).
1. MIN SPD and MAX
SPD are not calibrated.
1. MAX SPD setting is too
low.
2. IR COMP setting is too
low.
3. Motor is overloaded.
1. IR COMP is set too
high.
2. Control is in current
limit mode.
1. Recalibrate MIN SPD
and MAX SPD (page
20).
2. Check field
connections.
1. Recalibrate MIN SPD
and MAX SPD (page
20).
1. Increase MAX SPD
setting (page 20).
2. Increase IR COMP
setting (page 22).
3. Check motor load.
Resize the motor and
drive if necessary.
1. Adjust the IR COMP
setting slightly CCW
until the motor speed
stabilizes (page 22).
2. Check that motor and
drive are of sufficient
horsepower and
amperage.
Motor runs too fast at
maximum speed setting
Motor runs too slow or
too fast
Motor will not reach the
desired speed.
Motor pulsates or surges
under load
Symptom
Possible
Causes
Suggested
Solutions