Rockwell-automation DC3E Non-Regenerative DC Drive User Guide 1/4 - 2 Manual do Utilizador Página 80

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72
Problem Possible
Causes
Suggested
Solutions
Troubleshooting
Motor runs too
fast at set speed
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. Recalibrate MIN
SPD and MAX
SPD.
2. Check motor
field connections.
3. Check for proper
braking technique
and method by
which power is
cycled.
4. Check
tachometer
connections.
250-0287-rev2.qxd 3/12/01 10:27 AM Page 72
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