ABB ACS880 N5700 Series - Page 578

What to doCause
Event name /
Aux. code
Code
(hex)
Note: Control board reboot (either by
cycling the power or through
parameter 96.8 Control board boot)
is required to validate any changes in
the hardware settings.
Check motor load and drive ratings.Motor is operating in stall region
because of e.g. excessive load or
insufficient motor power.
Motor stallA780
Check fault function parameters.
Check external fan (or other
equipment controlled) by the logic.
No feedback received from external
fan.
Motor fanA781
Check settings of parameters
35.100…35.106.
FEN
temperature
A782
• Check that parameter 35.11
Temperature 1 source / 35.21
• Error in temperature
measurement when temperature
sensor (KTY or PTC) connected Temperature 2 source setting
to encoder interface FEN-xx is
used.
corresponds to actual encoder
interface installation.
Check the settings of parameters
91.21 and 91.24. Check that the
• Error in temperature
measurement when KTY sensor
corresponding module is
connected to encoder interface
FEN-01 is used.
activated in parameters
91.11…91.14. Use parameter 91.10
Encoder parameter refresh to
validate any changes in the
settings.
• FEN-01 does not support
temperature measurement with
KTY sensor. Use PTC sensor or
other encoder interface module.
Check for overloaded motor.Motor current is too high.Motor
overload
A783
Adjust the parameters used for the
motor overload function (35.51…35.53)
and 35.55…35.56.
Check that a brake resistor has been
connected.
Brake resistor broken or not
connected.
Brake resistorA791
Check the condition of the brake
resistor.
Stop drive. Let resistor cool down.Brake resistor temperature has
exceeded warning limit defined by
BR excess
temperature
A793
Check resistor overload protection
function settings (parameter group
43 Brake chopper).
parameter 43.12 Brake resistor
warning limit.
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.
578 Fault tracing