ABB ACS880 - Page 554

What to doCause
Event name /
Aux. code
Code
(hex)
Check that a brake resistor has been
connected.
DC overvoltage detected during braking.Brake resistor7181
Check the condition of the brake resistor.
Check the dimensioning of the brake
chopper and resistor.
Stop drive. Let resistor cool down.Brake resistor temperature has exceeded
fault limit defined by parameter 43.11
Brake resistor fault limit.
BR excess
temperature
7183
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.
Check brake chopper and brake resistor
connection.
Brake resistor short circuit or brake
chopper control fault.
Brake resistor
wiring
7184
Ensure brake resistor is not damaged.
After correcting the cause of the fault,
reboot the control unit (using parameter
96.8 Control board boot) or by cycling
power.
Ensure brake resistor is connected and
not damaged.
Short circuit in brake chopper IGBT.BC short circuit7191
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
96.8 Control board boot) or by cycling
power.
Let chopper cool down.Brake chopper IGBT temperature has
exceeded internal fault limit.
BC IGBT
excess
temperature
7192
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.
Check mechanical brake connection.Mechanical brake control fault.Mech brake
closing failed
71A2
Check mechanical brake settings in
parameter group 44 Mechanical brake
control.
Activated eg. if brake acknowledgement
is not as expected during brake closing.
Check that acknowledgement signal
matches actual status of brake.
Check mechanical brake connection.Mechanical brake control fault.Mech brake
opening failed
71A3
554 Fault tracing