26
Troubleshooting
Problem
Possible
Causes
Suggested
Solutions
Motor will not reach the
desired speed
Motor pulsates or surges
under load
Motor does not reverse
Motor makes a humming
or buzzing noise
FWD or REV JOG speed
is too slow or too fast
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. Motor “bouncing” in
and out of torque limit.
Touch panel, logic board,
or power board
connections might be
loose.
Deadband setting is
too high.
FWD or REV JOG speed
not calibrated.
1. Increase MAX SPD
setting.
2. Increase the IR COMP
setting.
3. 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
FWD TQ and
REV TQ trimpots.
Check all connections.
Turn deadband (DB)
trimpot CCW until the
noise stops.
Calibrate FWD JOG and
REV JOG trimpots (see
Calibration section).
For additional assistance, contact your local Minarik
®
Distributor, or the
factory direct: phone (818) 502-1528; fax (818) 502-0716.
250-0234 rev 1.qxd 3/12/99 11:14 AM Page 26
Summary of Contents for RG501A
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