ABB ACS550 - Page 246

246 ACS550 User’s Manual
Diagnostics
11 ID RUN FAIL The Motor ID Run was not completed successfully. Check for and correct:
• Motor connections.
• Motor parameters 9905…9909.
12
MOTOR STALL Motor or process stall. Motor is operating in the stall region. Check for and
correct:
• Excessive load.
• Insufficient motor power.
• Parameters 3010…3012.
13
RESERVED Not used.
14
EXT FAULT 1 Digital input defined to report first external fault is active. See parameter
3003
EXTERNAL FAULT 1.
15
EXT FAULT 2 Digital input defined to report second external fault is active. See parameter
3004
EXTERNAL FAULT 2.
16
EARTH FAULT Possible ground fault detected in the motor or motor cables. The drive
monitors for ground faults while the drive is running and while the drive is
not running. Detection is more sensitive when the drive is not running and
can produce false positives.
Possible corrections:
• Check for/correct faults in the input wiring.
• Verify that motor cable does not exceed maximum specified length.
• A delta grounded input power supply and motor cables with high
capacitance may result in erroneous error reports during non-running
tests. To disable response to fault monitoring when the drive is not
running, use parameter 3023
WIRING FAULT. To disable response to all
ground fault monitoring, use parameter 3017
EARTH FAULT.
17
OBSOLETE Not used.
18
THERM FAIL Internal fault. The thermistor measuring the internal temperature of the
drive is open or shorted. Contact your local ABB representative.
19
OPEX LINK Internal fault. A communication-related problem has been detected on the
fiber optic link between the control and OINT boards. Contact your local
ABB representative.
20 OPEX PWR Internal fault. Low voltage condition detected on OINT power supply.
Contact your local ABB representative.
21
CURR MEAS Internal fault. Current measurement is out of range. Contact your local ABB
representative.
22
SUPPLY PHASE Ripple voltage in the DC link is too high. Check for and correct:
• Missing mains phase.
• Blown fuse.
23
ENCODER ERR The drive is not detecting a valid encoder signal. Check for and correct:
• Encoder presence and proper connection (reverse wired, loose
connection or short circuit).
• Voltage logic levels are outside of the specified range.
• A working and properly connected Pulse Encoder Interface Module,
OTAC-01.
• Wrong value entered in parameter 5001
PULSE NR. A wrong value will
only be detected if the error is such that the calculated slip is greater
than 4 times the rated slip of the motor.
• Encoder is not being used, but parameter 5002
ENCODER ENABLE =
1(
ENABLE).
Fault
code
Fault name in
panel
Description and recommended corrective action