ABB ACS880-104

572 Fault tracing
A4B1 Excess temperature
difference
High temperature difference
between the IGBTs of different
phases.
Check the motor cabling.
Check cooling of drive module(s).
Check the auxiliary code (format XXXY
YYZZ). “XXX” indicates the source of
difference (0: Single module, difference
between phase IGBTs, 1: parallel-
connected modules, minimum-maximum
difference between all IGBTs of all
modules). With parallel-connected
modules, “Y YY” specifies through which
BCU control unit channel the fault was
received. “ZZ” specifies the phase (0:
single module, 1: U-phase [parallel
connection], 2: W-phase [parallel
connection], 3: W-phase [parallel
connection]).
A4B2 PCB space cooling Temperature difference
between ambient and drive
module PCB space is
excessive.
Check the cooling fan inside the PCB
space.
With parallel-connected modules, check
the auxiliary code (format XXXY YYZZ).
“Y YY” specifies through which BCU
control unit channel the fault was
received.
A4F6 IGBT temperature Drive IGBT temperature is
excessive.
Check ambient conditions.
Check air flow and fan operation.
Check heatsink fins for dust pick-up.
Check motor power against drive power.
A580 PU communication Communication errors
detected between the drive
control unit and the power unit.
Check the connections between the drive
control unit and the power unit.
Check the auxiliary code (format XXXY
YYZZ). With parallel-connected modules,
“Y YY” specifies the affected BCU control
unit channel (0: broadcast). “ZZ”
specifies the error source
(8: Transmission errors in PSL link [see
“XXX”], 9: Transmitter FIFO warning limit
hit). “XXX” specifies the transmission
error direction and detailed warning code
(0: Rx/communication error, 1: Tx/Reed-
Solomon symbol error, 2: Tx/no
synchronization error, 3: Tx/Reed-
Solomon decoder failures,
4: Tx/Manchester coding errors).
A581 Fan Cooling fan feedback missing. Check the setting of parameter 95.20
HW options word 1, bit 14.
Check the auxiliary code to identify the
fan. Code 0 denotes main fan 1. Other
codes (format XYZ): “X” specifies state
code (1: ID run, 2: normal). “Y” specifies
the index of the inverter unit connected to
BCU (0…n, always 0 for ZCU control
units). “Z” specifies the index of the fan
(1: Main fan 1, 2: Main fan 2,
3: Main fan
3).
Check fan operation and connection.
Replace fan if faulty.
Code
(hex)
Warning Cause What to do