How To Reset; Fault History; Alarm Messages Generated By The Drive - ABB ACS850 Firmware Manual

226 Fault tracing

How to reset

The drive can be reset either by pressing the RESET key on the control panel or PC
tool, or by switching the supply voltage off for a while. When the fault has been
removed, the motor can be restarted.
A fault can also be reset from an external source selected by parameter
reset sel.

Fault history

When fault is detected, it is stored in the fault logger with a time stamp. The fault
history stores information on the 16 latest faults of the drive. Three of the latest faults
are stored at the beginning of a power switch off.
Parameters 08.01 Active fault
recent faults.
Alarms can be monitored via alarm words
Alarm information is lost at power switch off or fault reset.

Alarm messages generated by the drive

Code Alarm
(fieldbus code)
2000 BRAKE START
TORQUE
(0x7185)
Programmable fault:
42.12 Brake fault func
2001 BRAKE NOT
CLOSED
(0x7186)
Programmable fault:
42.12 Brake fault func
2002 BRAKE NOT OPEN
(0x7187)
Programmable fault:
42.12 Brake fault func
2003 SAFE TORQUE OFF
(0xFF7A)
Programmable fault:
30.07 Sto diagnostic
2004 STO MODE CHANGE
(0xFF7A)
and 08.02 Last fault
08.05 Alarm word1
Cause
Mechanical brake alarm. Alarm
is activated if required motor
starting torque (42.08 Brake
open torq) is not achieved.
Mechanical brake control
alarm. Alarm is activated e.g. if
brake acknowledgement is not
as expected during brake
closing.
Mechanical brake control
alarm. Alarm is activated e.g. if
brake acknowledgement is not
as expected during brake
opening.
Safe Torque Off function is
active, i.e. safety circuit
signal(s) connected to
connector X6 is lost while drive
is stopped and parameter
30.07 Sto diagnostic is set to
Alarm.
Error in changing Safe Torque
Off supervision, i.e. parameter
30.07 Sto diagnostic setting
could not be changed to value
Alarm.
store the fault codes of the most
... 08.08 Alarm
What to do
Check brake open torque setting,
parameter 42.08.
Check drive torque and current limits.
See parameter group
Check mechanical brake connection.
Check mechanical brake settings in
parameter group 42 Mech brake
To determine whether problem is with
acknowledgement signal or brake, check
if brake is closed or open.
Check mechanical brake connection.
Check mechanical brake settings in
parameter group 42 Mech brake
To determine whether problem is with
acknowledgement signal or brake, check
if brake is closed or open.
Check safety circuit connections. For
more information, see appropriate drive
hardware manual.
Contact your local ABB representative.
10.10 Fault
word4.
20 Limits.
ctrl.
ctrl.