ABB ACS880 - Page 561

What to doCause
Event name /
Aux. code
Code
(hex)
Check ambient temperature. If it exceeds
40 °C (104 °F), ensure that load current
Drive module temperature is excessive.CoolingA4A9
does not exceed derated load capacity
of drive. See appropriate Hardware
manual.
Check drive module cooling air flow and
fan operation.
Check inside of cabinet and heatsink of
drive module for dust pick-up. Clean
whenever necessary.
Check ambient conditions.Power unit temperature is excessive.Excess
temperature
A4B0
Check air flow and fan operation.
Check the setting of 31.36 Aux fan fault
function (if present).
Check heatsink fins for dust pick-up.
Check motor power against drive power.
See A5EA Measurement circuit
temperature (page 562).
Check the motor cabling.High temperature difference between the
IGBTs of different phases.
Excess
temperature
difference
A4B1
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:
parallelconnected modules,
minimum-maximum difference between
all IGBTs of all modules, 2:
parallel-connected modules,
minimum-maximum difference between
auxiliary power supply boards). With
parallel-connected modules, “Y YY”
specifies through which BCU control unit
channel the highest temperature was
measured. “ZZ” specifies the phase (0:
single module, 1: U-phase [parallel
connection], 2: V-phase [parallel
connection], 3: W-phase [parallel
connection]).
Check ambient conditions.Drive IGBT temperature is excessive.IGBT
temperature
A4F6
Check air flow and fan operation.
Check heatsink fins for dust pick-up.
Check motor power against drive power.
Check the connections between the drive
control unit and the power unit.
Communication errors detected between
the drive control unit and the power unit.
PU
communication
A580
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:
Fault tracing 561