Parameter Reference
D-4
AC30V series Variable Speed Drive
PNO
Parameter Descriptions
AR Active
Indicates that the AR feature will reset the trip source once all trips have become inactive, (following a delay time if the AR feature
has been configured to also restart the motor).
AR Restart Pending
Indicates that the AR feature will reset the trip source and attempt to restart the motor once all trips have become inactive and the
relevant delay timer has expired.
AR Restarts Remaining
Indicates the number of restart attempts remaining before the AR feature disables itself.
This count is reset to
1471 AR Max Restarts
following 5 minutes of trip free operation, or after a successful manual or remote trip
reset.
AR Time Remaining
Indicates the time remaining before a restart attempt will be made. This value starts to count down once all trip sources are inactive.
Functional Description
The AR feature can be configured to operate in one of three modes via the parameter
1470 AR Mode
.
In all modes the AR feature becomes active when the drive trips on one of the trips selected by parameter
1472 AR Trip Mask
. If the drive trips
due to a trip not selected in
1472 AR Trip Mask
the AR feature will remain in the idle state.
Setting parameter
1469 AR Enable
to FALSE will disable the AR feature regardless of its current state.
1470 AR Mode 0:
Trip Reset
In Trip Reset mode, once the AR feature becomes active it monitors all possible trip sources. Once all trip sources are inactive the AR feature will
attempt to reset the trip event, moving the Sequencing State from the FAULTED state, (see Appendix B: Sequencing Logic). The AR feature
resets the trip as soon as possible, it does not wait for either
1505 Initial Delay
or
1506 AR Repeat Delay
.
In this mode the AR feature will not attempt to restart the motor.
This mode may be used when an external supervisiory system is monitoring the Faulted bit in
0661 Status Word
. This bit will be cleared once all
trip sources are inactive and the trip has been successfully cleared, indicating that the drive may be started.
1470 AR Mode 1:
Auto Restart
Caution: when Auto Restart is selected the motor may run unexpectedly.
In Auto Restart mode, once the AR feature becomes active it monitors all possible trip sources. Once all trip sources are inactive the AR feature
starts the programmed delay. Once the delay timer expires the AR feature attempts to reset the trip and to restart the motor.
The AR feature will not restart the motor if it was not running at the time of the trip, nor will it restart the motor if the run signal has been removed
at any time since the trip, (even if it is subsequently re-applied). When a motor restart will not be attempted the AR feature will act as if it had
been configured for
Trip Reset
only. If a motor restart will be attempted the parameter
1508 AR Restart Pending
is set TRUE.
Each time a restart is attempted the value in
1509 Restarts Remaining
is decremented. Once this value reaches zero, any further trip selected
for auto restart will cause the AR feature to disable itself.
