ABB ACS560 - Page 418

418 Fault tracing
0000 0002 Thermal time constant not
given.
Check value of 43.08.
0000 0003 Maximum continuous power
not given.
Check value of 43.09.
A79C BC IGBT excess
temperature
Brake chopper IGBT
temperature has exceeded
internal warning limit.
Let chopper cool down.
Check for excessive ambient
temperature.
Check for cooling fan failure.
Check for obstructions in the air flow.
Check the dimensioning and cooling of
the cabinet.
Check resistor overload protection
function settings (parameters
43.06…43.10).
Check minimum allowed resistor value
for the chopper being used.
Check that braking cycle meets allowed
limits.
Check that drive supply AC voltage is not
excessive.
A7AB Built in/Extension I/O
configuration failure
The I/O built in/extension
module is not connected to the
device properly.
Make sure that the I/O built in/extension
module is connected to the device.
A7AC I/O Module internal
error
Calibration data is not stored in
the I/O module. Analog signals
are not working with full
accuracy.
Replace I/O module.
A7A1 Mechanical brake
closing failed
Mechanical brake control
warning.
Check mechanical brake connection.
Check mechanical brake settings in
parameter group 44 Mechanical brake
control.
Check that acknowledgment signal
matches the actual status of the brake.
A7A2 Mechanical brake
opening failed
Status of mechanical brake
acknowledgment is not as
expected during brake open.
Check mechanical brake connection.
Check mechanical brake settings in
parameter group 44 Mechanical brake
control.
Check that acknowledgment signal
matches the actual status of brake.
A7A5 Mechanical brake
opening not allowed
Open conditions of mechanical
brake cannot be fulfilled.
Check mechanical brake settings in
parameter group 44 Mechanical brake
control.
Check that the acknowledgment signal (if
used) matches the actual status of the
brake.
Code
(hex)
Warning / Aux. code
(aux code visible only
on assistant control
panel and drive
composer)
Cause What to do