SYMPTOM
POSSIBLE CAUSE
CORRECTIVE ACTION
POWER BASE FLT
Broken or misaligned encoder coupling.
Check encoder coupling: align or replace.
Encoder bearing failure.
Replace encoder and align during installation.
Excessive current draw.
Disconnect motor wiring and retry. Contact
Power device desaturated.
factory if fault remains.
Excessive noise on encoder signals.
Check encoder connections. Separate encoder
leads from power leads. Cross power leads at
90°. Isolate encoder from motor electrically.
Install optional Isolated Encoder Feedback
expansion board.
Electrical noise from external DC coils.
Install diodes on all external DC relay coils. See
manual, Opto-Isolated Outputs.
Electrical noise from external AC coils.
Install RC snubbers on all external AC coils.
Drive overloaded.
Verify sizing of motor and control for
application.
POWER MODULE FLT
Power supply malfunction in multiaxis
Push RESET key. If problem remains replace
shared bus system.
power supply module.
REGEN PWR FLT
Incorrect Dynamic Braking parameter
Check RESISTOR OHMS and RESISTOR
settings.
WATTS settings in Level 2 BRAKE ADJUST
parameter block.
Regen power exceeded Dynamic Braking
Resize and replace DB resistor(s).
resistor rating.
Input voltage too high.
Verify proper incoming line voltage.
Use transformer to step down voltage.
Use line reactor to minimize voltage spikes.
UNKNOWN FAULT
Fault occurred but was not sustained
Check AC line for high frequency noise and input
long enough to record the source of fault.
switches for good contact.
USER FAULT TEXT
Fault peculiar to custom software
Refer to custom software fault list.
detected.
WRONG RESPONSE
Input common mode voltage may be
Connect control input source common to control
TO SPEED COMMAND
excessive.
common to minimize common mode voltage.
Continued on next page...
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DIAGNOSTIC INFO AND TROUBLESHOOTING
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Содержание 23H Series
Страница 11: ...1 8 GENERAL INFORMATION MN723H 10 95 11 28 95 1 07 AM Page 12 Black plate...
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Страница 99: ...4 16 DIAGNOSTIC INFO AND TROUBLESHOOTING MN723H 10 95 11 28 95 1 14 AM Page 100 Black plate...
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