Group 31: Automatic Reset - ABB ACS 400 User Manual

Group 31: Automatic Reset

The automatic reset system can be used for resetting overcurrent, overvoltage, undervoltage and
analogue input loss faults automatically. Number of allowed automatic reset operations within a
certain time is selectable.
Warning! If parameter 3107
the analogue input signal is restored. Ensure that the use of this feature will not cause physical injury
and/or damage equipment.
Code Description
3101 NR OF TRIALS
Sets the number of allowed autoresets within a certain time. The time is defined with parameter 3102
. The ACS 400 prevents additional autoresets and remains stopped until a successful reset is
TIME
performed from the control panel or from a place selected by parameter 1604
3102 TRIAL TIME
The time within which a limited number of fault autoresets is allowed. The allowed number of faults per this
time period is given with parameter 3101
3103 DELAY TIME
This parameter sets the time that the ACS 400 will wait after a fault occurs before attempting to reset. If set
to zero, the ACS 400 will reset immediately.
3104 AR OVERCURRENT
0 =
DISABLE
1 =
ENABLE
If 1 is selected, the fault (motor overcurrent) is reset automatically after the delay set by parameter 3103,
and the ACS 400 resumes normal operation.
3105 AR OVERVOLTAGE
0 =
DISABLE
1 =
ENABLE
If 1 is selected, the fault (DC bus overvoltage) is reset automatically after the delay set by parameter 3103,
and the ACS 400 resumes normal operation.
3106 AR UNDERVOLTAGE
0 =
DISABLE
1 =
ENABLE
If 1 is selected, the fault (DC bus undervoltage) is reset automatically after the delay set by parameter 3103
, and the ACS 400 resumes normal operation.
DELAY TIME
3107 AR AI<MIN
0 =
DISABLE
1 =
ENABLE
If 1 is selected, the fault (analogue input signal under minimum level) is reset automatically after the delay
set by parameter 3103
x = Automatic reset
Figure 50 Operation of automatic reset function. In this example, if the fault occurs at the moment
"Now", it is automatically reset if parameter 3101
ACS 400 User's Manual
is enabled, the drive may restart even after a long stop when
AR AI<MIN
NR OF TRIALS
.
DELAY TIME
Trial time
X X X
.
Now
value is greater than or equal to 4.
NR OF TRIALS
.
FAULT RESET SEL
Time
TRIAL
89