ABB +N5600 Firmware Instructions page 599

Code
Fault
(hex)
71A3 Mechanical brake
opening failed
Programmable fault:
Brake fault function
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
Cause
Mechanical brake control fault.
Activated eg. if brake
acknowledgement is not as
44.17
expected during brake
opening.
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 encoderless 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.
Fault tracing 599
What to do
Check mechanical brake connection.
Check mechanical brake settings in
parameter group 44 Mechanical brake
control.
Check that acknowledgement signal
matches actual status of brake.
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
580).
Check minimum/maximum speed
settings, parameters 30.11 Minimum
speed and 30.12 Maximum
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 497).
Contact your local ABB representative.
See A7E1 Encoder (page 581).
See A797 Speed feedback configuration
(page 577).
request.
(page
speed.
or
Standstill ID run.