ACH550 Installation, Operation and Maintenance Manual 25
ACH550-UH
10 PANEL LOSS Panel communication is lost and either:
• Drive is in local control mode (the control panel displays HAND or OFF),
or
• Drive is in remote control mode (AUTO) and is parameterized to accept
start/stop, direction or reference from the control panel.
To correct check:
• Communication lines and connections
• Parameter 3002
PANEL COMM ERROR.
• Parameters in Group 10: START/STOP/DIR and Group 11:
REFERENCE SELECT (if drive operation is AUTO).
11
ID RUN FAIL The motor ID run was not completed successfully. Check for and correct:
• Motor connections
• Motor parameters 9905…9909 do not match motor nameplate.
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.
14 EXTERNAL FLT 1 Digital input defined to report first external fault is active. See parameter
3003
EXTERNAL FAULT 1.
15
EXTERNAL FLT 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
UNDERLOAD Motor load is lower than expected. Check for and correct:
• Disconnected load.
• Group 37: USER LOAD CURVE.
18
THERM FAIL Internal fault. The thermistor measuring the internal temperature of the
drive is open or shorted. Contact your local ABB sales representative.
19 OPEX LINK Internal fault. A communication-related problem has been detected on the
fiber optic link between the OITF and OINT boards. Contact your local ABB
sales representative.
20
OPEX PWR Internal fault. Low voltage condition detected on OINT power supply.
Contact your local ABB sales representative.
21
CURR MEAS Internal fault. Current measurement is out of range. Contact your local ABB
sales representative.
Fault
Code
Fault Name In
Panel
Description and Recommended Corrective Action
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