Fault History; Alarm Messages Generated By The Drive - ABB ACS850 Manual

290 Fault tracing

Fault history

When a 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
logger4. 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 logger1
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 XSTO is lost.
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 the appropriate
drive Hardware Manual, description of
parameter 30.07 (page 193), and
Application guide - Safe torque off
function for ACSM1, ACS850 and
ACQ810 drives (3AFE68929814
[English]).
Contact your local ABB representative.
20 Limits.
ctrl.
ctrl.