ABB ACS880-104

598 Fault tracing
7181 Brake resistor Brake resistor broken or not
connected.
Check that a brake resistor has been
connected.
Check the condition of the brake resistor.
Check the dimensioning of the brake
resistor.
7183 BR excess
temperature
Brake resistor temperature has
exceeded fault limit defined by
parameter 43.11 Brake resistor
fault limit.
Stop drive. Let resistor cool down.
Check resistor overload protection
function settings (parameter group 43
Brake chopper).
Check fault limit setting, parameter 43.11
Brake resistor fault limit.
Check that braking cycle meets allowed
limits.
7184 Brake resistor wiring Brake resistor short circuit or
brake chopper control fault.
Check brake chopper and brake resistor
connection.
Ensure brake resistor is not damaged.
After correcting the cause of the fault,
reboot the control unit (using parameter
96.08 Control board boot) or by cycling
power.
7191 BC short circuit Short circuit in brake chopper
IGBT.
Ensure brake resistor is connected and
not damaged.
Check the electrical specifications of the
brake resistor against the Hardware
manual.
Replace brake chopper (if replaceable).
After correcting the cause of the fault,
reboot the control unit (using parameter
96.08 Control board boot) or by cycling
power.
7192 BC IGBT excess
temperature
Brake chopper IGBT
temperature has exceeded
internal fault 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 (parameter group 43
Brake chopper).
Check that braking cycle meets allowed
limits.
Check that drive supply AC voltage is not
excessive.
71A2 Mechanical brake
closing failed
Programmable fault: 44.17
Brake fault function
Mechanical brake control fault.
Activated eg. if brake
acknowledgement is not as
expected during brake closing.
Check mechanical brake connection.
Check mechanical brake settings in
parameter group 44 Mechanical brake
control.
Check that acknowledgement signal
matches actual status of brake.
Code
(hex)
Fault Cause What to do