ABB ACS880 N5700 Series - Page 572

What to doCause
Event name /
Aux. code
Code
(hex)
Check the wiring of the temperature
sensor. Repair wiring if faulty.
Measure the resistance of the sensor.
Replace sensor if faulty.
Check the cooling of the motor.The thermistor protection module
installed in slot 3 indicates
overtemperature.
Motor
temperature 3
A499
Check the motor load and drive
ratings.
Check the wiring of the temperature
sensor. Repair wiring if faulty.
Measure the resistance of the sensor.
Replace sensor if faulty.
Check the auxiliary code. See actions
for each code below.
Control unit temperature is excessive.Control board
temperature
A4A0
Check ambient conditions.Temperature above warning limit.–
Check air flow and fan operation.
Check heatsink fins for dust pick-up.
Contact an ABB service
representative for control unit
replacement.
Thermistor broken.1
Check ambient temperature. If it
exceeds 40 °C (104 °F), ensure that
Drive module temperature is
excessive.
CoolingA4A9
load current 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 574).
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
572 Fault tracing