39
Symptom
Possible
Causes
Suggested
Solutions
Line fuse does not
blow, but the motor
does not run (cont.)
Motor runs too fast at
maximum speed
setting
Motor runs too slow or
too fast
Motor will not reach
the desired speed.
3. Drive is overloaded.
4. Drive is not receiving
AC line voltage.
5. Motor is not connected.
1. MIN SPD and MAX
SPD settings are too high.
2. Field connections are
loose (shunt-wound motors
only)
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.
3. Verify that the motor is
not jammed. Increase
TORQUE setting (page
26).
4. Apply AC line voltage
to L1 and L2.
5. Connect motor to A1
and A2.
1. Recalibrate MIN SPD
(page 22) and MAX SPD
(page 23).
2. Check field
connections
1. Recalibrate MIN SPD
(page 22) and MAX SPD
(page 23).
1. Increase MAX SPD
setting (page 23).
2. Increase IR COMP
setting (page 25).
3. Check motor load.
Resize the motor if
necessary.
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