49
Troubleshooting
Problem Possible
Causes
Suggested
Solutions
Line fuse blows
Motor runs too fast at
maximum speed setting
1. Line fuses are the wrong
size.
2. Motor cable or armature
is shorted to ground.
3. Nuisance tripping caused
by a combination of ambi-
ent conditions and high-
current spikes (i.e.
reversing).
4. Field circuit is open.
1. MIN SPD and MAX SPD
settings are too high.
2. Motor field connections
are loose (shunt wound
motors only).
3. Motor is demagnetized.
4. Tachometer leads are
reversed.
1. Check that line fuses are
correct for motor size (page
9).
2. Check motor cable and
armature for shorts.
3. Add a blower to cool the
drive components, or
decrease the duty cycle of
the system.
4. Send drive to Minarik repair
department.
1. Recalibrate MIN SPD and
MAX SPD.
2. Check motor field connec-
tions.
3. Check for proper braking
technique and method by
which power is cycled.
4. Check tachometer connec-
tions.
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