384 Fault tracing
A6E5 AI parametrization The current/voltage hardware
setting of an analog input does
not correspond to parameter
settings.
Check the event log for an auxiliary code.
The code identifies the analog input
whose settings are in conflict.
Adjust either the hardware setting (on the
drive control unit) or parameter
12.15/12.25.
Note: Control board reboot (either by
cycling the power or through parameter
96.08 Control board boot) is required to
validate any changes in the hardware
settings.
A780 Motor stall
Programmable warning:
31.24 Stall function
Motor is operating in stall
region because of e.g.
excessive load or insufficient
motor power.
Check motor load and drive ratings.
Check fault function parameters.
A793 BR excess
temperature
Brake resistor temperature has
exceeded warning limit defined
by parameter 43.12 Brake
resistor warning limit.
Stop drive. Let resistor cool down.
Check resistor overload protection
function settings (parameter group 43
Brake chopper).
Check warning limit setting, parameter
43.12 Brake resistor warning limit.
Check that the resistor has been
dimensioned correctly.
Check that braking cycle meets allowed
limits.
A794 BR data Brake resistor data has not
been given.
One or more of the resistor data settings
(parameters 43.08…43.10) is incorrect.
The parameter is specified by the
auxiliary code.
0000 0001 Resistance value too low. Check value of 43.10.
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 Extension I/O
configuration failure
Installed CMOD module is not
the same as configured.
Check that the installed module (shown
by parameter 15.02 Detected extension
module) is the same as selected by
parameter 15.01 Extension module type.
Code
(hex)
Warning / Aux. code Cause What to do
ACS580 FW.book Page 384 Wednesday, September 21, 2016 9:48 PM
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