Problem possible cause suggested solution – LEESON FHP Series Chassis Mount Variable Speed Drives User Manual

Page 72

Troubleshooting

1. Check TQ LIM

setting (page 41).

2. “Fix” load (i.e.,

straighten
mounting,
coupling, etc.); or
replace motor and
drive with motor
and drive rated for
higher horsepower.

3. Compare motor

voltage to input
voltage. Replace
motor if necessary.

TQ is unsatisfactory at
high speeds.

1. TQ LIMIT set too low.

2. Load may exceed

rating of motor/drive.

3. Nominal input voltage

may be too low for
motor.

Problem

Possible

Cause

Suggested

Solution