ABB ACS480 Troubleshooting Manual page 7

06 Fault tracing
Code
Warning / Aux. code
(hex)
A4A1 IGBT overtemperature Estimated drive IGBT
A4A9 Cooling
A4B0 Excess temperature
A4B1 Excess temperature
difference
A4F6 IGBT temperature
A582 Auxiliary fan missing
A5A0 Safe torque off
Programmable warning:
31.22 STO indication
run/stop
A5EA Measurement circuit
temperature
Cause
temperature is excessive.
Drive module temperature is
excessive.
Power unit module
temperature is excessive.
High temperature difference
between the IGBTs of different
phases.
Drive IGBT temperature is
excessive.
An auxiliary cooling fan (IP55
internal fan) is stuck or
disconnected.
Safe torque off function is
active, ie safety circuit signal(s)
connected to connector STO is
lost.
Problem with internal
temperature measurement of
the drive.
What to do
Check ambient conditions.
Check air flow and fan operation.
Check heatsink fins for dust pick-up.
Check motor power against drive power.
Check ambient temperature. If it exceeds
40 °C/104 °F (IP21 frames R4
it exceeds 50 °C /122 °F (IP21 frames
...
R0 R9), ensure that load current does
not exceed derated load capacity of
drive. For all P55 frames, check the
derating temperatures. See chapter
Technical data, section Derating in the
Hardware manual of the drive.
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.
Check air flow and fan operation.
Check heatsink fins for dust pick-up.
Check motor power against drive power.
(1: U-phase, 2: V-phase, 3: W-phase, 4:
INT board, 6: Air inlet (sensor connected
to INT board X10), 7: PCB compartment
fan or power supply board, FA: Ambient
temperature).
Check the motor cabling.
Check cooling of drive module(s).
Check ambient conditions.
Check air flow and fan operation.
Check heatsink fins for dust pick-up.
Check motor power against drive power.
Check the auxiliary code.
Check the auxiliary fan and connection.
Replace faulty fan.
Make sure the front cover of the drive is
in place and tightened. If the
commissioning of the drive requires that
the cover is off, this warning will be
generated even if the corresponding fault
is defeated. See fault 5081 Auxiliary fan
broken (page 400).
Check safety circuit connections. For
more information, chapter The Safe
torque off function in the Hardware
manual of the drive and description of
parameter 31.22 STO indication run/stop
(page 244).
Check the value of parameter
Control board supply.
Contact your local ABB representative.
...
R9) or if
95.04