ABB ACS880 Firmware Manual page 668

668 Fault tracing
Code Event name /
(hex) Aux. code
71B1 Motor fan
7301 Motor speed
feedback
7310 Overspeed
7380 Encoder
internal
7381 Encoder
73A0 Speed fbk
configuration
73A1 Load position
feedback
0001
0002
0003
Cause
Brake close request or from an FSO-xx
safety functions module) against a
modulating drive for longer than 5
seconds.
No feedback received from external
fan.
No motor speed feedback received.
• Motor is turning faster than
highest allowed speed due to
incorrectly set
minimum/maximum speed,
insufficient braking torque or
changes in load when using
torque reference.
• Incorrect estimated speed.
Internal fault.
Encoder feedback fault.
Speed feedback configuration
incorrect.
No load position feedback received.
Encoder stopped working.
Feed constant definition invalid or
outside limits.
Motor/load gear definition invalid
or outside limits.
What to do
Check the source signal selected by
parameter 44.12 Brake close
Check the safety circuits connected
to the FSO-xx safety functions module.
Check external fan (or other
equipment controlled) by the logic.
Check settings of parameters
35.100...35.106.
See A7B0 Motor speed
feedback (page 684).
• Check minimum/maximum
speed settings, parameters
Minimum speed, 30.12 Maximum
speed and 31.30 Overspeed trip
margin.
Check adequacy of motor braking
torque.
Check applicability of torque
control.
Check need for brake chopper
and resistor(s).
• Check the status of motor
current measurement.
Perform a Normal,
Advanced Standstill
instead of, for example, a
Reduced or Standstill.
See parameter 99.13 ID run
requested (page 624).
Contact your local ABB representative.
See A7E1 Encoder (page
See A797 Speed feedback
configuration (page 680).
Check the auxiliary code (format XXYY
ZZZZ). "XX" specifies the number of
the encoder interface module (01:
91.11/91.12, 02: 91.13/91.14), "YY"
specifies the encoder (01:
1 configuration, 02: 93 Encoder 2
configuration). "ZZZZ" indicates the
problem (see actions for each code
below).
Check encoder status.
Check feed constant settings
and 90.64).
Check motor/load gear settings
(90.61 and 90.62).
request.
30.11
Advanced or
ID run
685).
92 Encoder
(90.63