![ABB ACS380 Series Firmware Manual Download Page 408](http://html.mh-extra.com/html/abb/acs380-series/acs380-series_firmware-manual_2560408.webp)
408 Fault tracing
71A3
Mechanical brake
opening failed
Programmable fault:
44.17
Brake fault function
Mechanical brake control fault.
Activated e.g. if brake
acknowledgement is not as
expected during brake
opening.
Check mechanical brake connection.
Check mechanical brake settings in
parameter group
44 Mechanical brake
control
.
Check that acknowledgement signal
matches actual status of brake.
71A5
Mechanical brake
opening not allowed
Open conditions of mechanical
brake cannot be fulfilled (e.g.,
the brake has been prevented
from opening by parameter
44.11).
Check mechanical brake settings in
parameter group
44 Mechanical brake
control
(especially
44.11
).
Check that the acknowledgment signal (if
used) matches the actual status of the
brake.
7121
Motor stall
Programmable fault:
31.24
Stall function
Motor is operating in stall
region because of e.g.
excessive load or insufficient
motor power.
Check motor load and drive ratings.
Check fault function parameters.
7181
Brake resistor
Brake resistor broken or not
connected.
Check that a brake resistor has been
connected.
Check the condition of the brake resistor.
Check the dimensioning of the brake
resistor.
7183
BR excess
temperature
Brake resistor temperature has
exceeded fault limit defined by
parameter
43.11
Brake resistor
fault limit
.
Stop drive. Let resistor cool down.
Check resistor overload protection
function settings (parameter group
43
Brake chopper
).
Check fault limit setting, parameter
43.11
Brake resistor fault limit
.
Check that braking cycle meets allowed
limits.
7184
Brake resistor wiring
Brake resistor short circuit or
brake chopper control fault.
Check brake chopper and brake resistor
connection.
Ensure brake resistor is not damaged.
7191
BC short circuit
Short circuit in brake chopper
IGBT.
Ensure brake resistor is connected and
not damaged.
Check the electrical specifications of the
brake resistor against chapter
Resistor
braking
in the hardware manual of the
drive.
Replace brake chopper (if replaceable).
7192
BC IGBT excess
temperature
Brake chopper IGBT
temperature has exceeded
internal fault limit.
Let chopper cool down.
Check for excessive ambient
temperature.
Check for cooling fan failure.
Check for obstructions in the air flow.
Check resistor overload protection
function settings (parameter group
43
Brake chopper
).
Check that braking cycle meets allowed
limits.
Check that drive supply AC voltage is not
excessive.
Code
(hex)
Fault / Aux. code
Cause
What to do
ACS380 FW.book Page 408 Friday, May 4, 2018 4:18 PM
ghv Vertriebs-GmbH
| Am Schammacher Feld 47 | 85567 Grafing | T 49 80 92 81 89 0 | [email protected] |
www.ghv.de