35
Motor runs too fast.
Motor will not reach the
desired speed.
Motor pulsates or surges
under load.
1. MAX SPD and MIN
SPD are set too high.
2. Motor field connections
are loose (shunt wound
motors only).
1. MAX SPD setting is too
low.
2. IR COMP setting is too
low.
3. TORQUE setting is too
low.
4. Motor is overloaded.
1. IR COMP is set too
high.
2. Motor bouncing in and
out of current limit.
1. Calibrate MAX SPD
and MIN SPD.
2. Check motor field
connections.
1. Increase MAX SPD
setting.
2. Increase IR COMP
setting.
3. Increase TORQUE
setting.
4. Check motor load.
Resize the motor if
necessary.
1. Adjust the IR COMP
setting slightly CCW
until the motor speed
stabilizes.
2. Make sure motor is not
undersized for load;
adjust TORQUE trimpot
CW.
Problem
Possible
Causes
Suggested
Solutions
Troubleshooting
All manuals and user guides at all-guides.com
all-guides.com
