ABB ACS850 User 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 and 08.02 Last fault store the fault codes of the most
recent faults.
Alarms can be monitored via alarm words 08.05 Alarm logger1 … 08.08 Alarm
logger4. Alarm information is lost at power switch off or fault reset.
Alarm messages generated by the drive
Code Alarm
(fieldbus code)
Cause What to do
2000 BRAKE START
TORQUE
(0x7185)
Programmable fault:
42.12 Brake fault func
Mechanical brake alarm. Alarm
is activated if required motor
starting torque (42.08 Brake
open torq) is not achieved.
Check brake open torque setting,
parameter 42.08.
Check drive torque and current limits.
See parameter group 20 Limits.
2001 BRAKE NOT
CLOSED
(0x7186)
Programmable fault:
42.12 Brake fault func
Mechanical brake control
alarm. Alarm is activated e.g. if
brake acknowledgement is not
as expected during brake
closing.
Check mechanical brake connection.
Check mechanical brake settings in
parameter group 42 Mech brake ctrl.
To determine whether problem is with
acknowledgement signal or brake, check
if brake is closed or open.
2002 BRAKE NOT OPEN
(0x7187)
Programmable fault:
42.12 Brake fault func
Mechanical brake control
alarm. Alarm is activated e.g. if
brake acknowledgement is not
as expected during brake
opening.
Check mechanical brake connection.
Check mechanical brake settings in
parameter group 42 Mech brake ctrl.
To determine whether problem is with
acknowledgement signal or brake, check
if brake is closed or open.
2003 SAFE TORQUE OFF
(0xFF7A)
Programmable fault:
30.07 Sto diagnostic
Safe torque off function is
active, i.e. safety circuit
signal(s) connected to
connector XSTO is lost.
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]).
2004 STO MODE CHANGE
(0xFF7A)
Error in changing Safe torque
off supervision, i.e. parameter
30.07 Sto diagnostic setting
could not be changed to value
Alarm.
Contact your local ABB representative.

ABB ACS850 Specifications

General

Safety	STO (Safe Torque Off)
Communication	CANopen
Enclosure	IP21
Output Voltage	Up to 1000 V DC
Protection Features	Overcurrent, Overvoltage, Undervoltage
Cooling Method	Air or liquid cooling
Input Voltage	380 to 690 V AC