ABB ACS880 Firmware Manual page 599

Code
Fault
(hex)
71A5 Mechanical brake
opening not allowed
Programmable fault:
Brake fault function
71B1 Motor fan
Programmable fault:
35.106 DOL starter event
type
7301 Motor speed feedback
Programmable fault:
Motor feedback fault
7310 Overspeed
7380 Encoder internal
7381 Encoder
Programmable fault:
Motor feedback fault
73A0 Speed feedback
configuration
73A1 Load feedback
Programmable warning:
90.55 Load feedback fault
Cause
Open conditions of mechanical
brake cannot be fulfilled (for
example, brake has been
44.17
prevented from opening by
parameter 44.11 Keep brake
closed).
In an encoder-less application,
the brake is kept closed by a
brake close request (either
from parameter 44.12 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.
90.45
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.
90.45
Speed feedback configuration
incorrect.
No load feedback received.
0001 Load gear definition invalid or
outside limits.
Fault tracing 599
What to do
Check mechanical brake settings in
parameter group 44 Mechanical brake
control (especially 44.11 Keep brake
closed).
Check that acknowledgement signal (if
used) matches actual status of brake.
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
579).
Check minimum/maximum speed
settings, parameters 30.11 Minimum
speed, 30.12 Maximum speed
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
Advanced Standstill ID run instead of, for
example, a Reduced or
See parameter 99.13 ID run requested
(page 500).
Contact your local ABB representative.
See A7E1 Encoder (page 580).
See A797 Speed feedback configuration
(page 576).
Check the event log for an 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:
configuration, 02: 93 Encoder 2
configuration). "ZZZZ" indicates the
problem (see actions for each code
below).
Check load gear settings
90.54).
request.
(page
and 30.30
or
Standstill ID run.
92 Encoder 1
(90.53 and