Rockwell Automation DC3RD Digital Regenerative DC Drive User Guide 1/4 - 2 HP, 115/230 VAC - Manual (Page 51)

43 Troubleshooting
Problem Possible
Causes
Suggested
Solutions
Line fuse blows 1. Line fuses are the
wrong size.
2. Motor cable or
armature is shorted
to ground.
3. Nuisance tripping
caused by a
combination of
ambient conditions
and high-current
spikes
(i.e. reversing).
4. Field circuit is
open.
1. Check that line
fuses are properly
sized.
2. Check motor cable
and armature for
shorts.
3. Add a blower to
cool the drive
components;
decrease FWD TQ
and REV TQ settings;
check wiring to be
sure noise is reduced
or eliminated.
4. Send in drive to
Reliance Electric
repair department.
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