ABB ACS880-17 - Page 533

Fault tracing 533
7310 Overspeed 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.
Check minimum/maximum speed
settings, parameters 30.11 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).
Incorrect estimated speed. Check the status of motor current
measurement.
Perform a Normal, Advanced or
Advanced Standstill ID run instead of, for
example, a Reduced or Standstill ID run.
See parameter 99.13 ID run requested
(page 438).
7380 Encoder internal Internal fault. Contact your local ABB representative.
7381 Encoder
Programmable fault: 90.45
Motor feedback fault
Encoder feedback fault. See A7E1 Encoder (page 513).
73A0 Speed feedback
configuration
Speed feedback configuration
incorrect.
See A797 Speed feedback configuration
(page 508).
73A1 Load position
feedback
Programmable fault: 90.55
Load feedback fault
No load position feedback
received.
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: 92 Encoder 1
configuration, 02: 93 Encoder 2
configuration). “ZZZZ” indicates the
problem (see actions for each code
below).
0001 Load gear definition invalid or
outside limits.
Check load gear settings (90.53 and
90.54).
0002 Feed constant definition invalid
or outside limits.
Check feed constant settings (90.63 and
90.64).
0003 Motor/load gear definition
invalid or outside limits.
Check motor/load gear settings (90.61
and 90.62).
0004 Encoder not configured. Check encoder settings (92 Encoder 1
configuration or 93 Encoder 2
configuration).
Use parameter 91.10 Encoder parameter
refresh) to validate any changes in the
settings.
0005 Encoder stopped working. Check encoder status.
73B0 Emergency ramp
failed
Emergency stop did not finish
within expected time.
Check the settings of parameters 31.32
Emergency ramp supervision and 31.33
Emergency ramp supervision delay.
Check the predefined ramp times
(23.11…23.19 for mode Off1, 23.23 for
mode Off3).
Code
(hex)
Fault Cause What to do