45
Symptom
Possible
Causes
Suggested
Solutions
Troubleshooting
Line fuses blow
Line fuse does not
blow, but the motor
does not run
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).
1. Speed adjust
potentiometer or
voltage input signal
set to zero speed.
1. Check that line
fuses are properly
sized for the motor
being used.
2. Check motor cable
and armature for
shorts.
3. Add a blower to
cool the drive
components;
increase MOTOR
CURR. LIMIT
and REGEN
CURR. LIMIT
settings.
1. Increase the speed
adjust
potentiometer
setting or voltage
input signal.
250-0246r2_readers.qxd 6/7/01 10:51 AM Page 45
Summary of Contents for NRG-2Q Series
Page 1: ...User s Manual NRG 2Q Series Two Quadrant Regenerative PWM Drives for DC Brush Motors...
Page 12: ...6 Regenerative Drives Figure 2 Two Quadrant Operation...
Page 19: ...13 Installation Also see Dynamic brake resistor sizing page 23 Figure 3 NRG 2Q Connections...
Page 31: ...25 Operation Figure 7 Dynamic Braking Circuit Connection...
Page 57: ...Notes...
Page 58: ...Notes...