376
Diagnostics and maintenance
ACH550-01 User's Manual
34
MOTOR
PHASE
Fault in the motor circuit. One of the motor
phases is lost. Check for and correct:
• motor fault
• motor cable fault
• thermal relay fault (if used)
• internal fault.
35
OUTP
WIRING
Incorrect input power and motor cable
connection (i.e., input power cable is
connected to drive motor connection). The
fault can be erroneously declared if the drive
is faulty or the input power is a delta
grounded system and the motor cable
capacitance is large.
This fault can be disabled by using
parameter 3023
WIRING
FAULT
.
• Check input power connections. Check
grounding.
36
INCOMPATIBLE
SW
Loaded software is not compatible with the
current drive type. Contact your local ABB
representative.
37
CB
OVERTEMP
Drive control board is overheated. The fault
trip limit is 88 °C. Check for and correct:
• excessive ambient temperature
• fan failure
• obstructions in the air flow.
Not for drives with an OMIO control board.
38
USER
LOAD
CURVE
Condition defined by parameter 3701
USER
LOAD
C
MODE
has been valid longer than the
time defined by 3703
USER
LOAD
C
TIME
.
101
…
199
SYSTEM
ERROR
Error internal to the drive. Contact your local
ABB representative and report the error
number.
201
…
299
SYSTEM
ERROR
Error in the system. Contact your local ABB
representative and report the error number.
Fault
code
Fault name in
the panel
Description and
recommended corrective action
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