B&R ACOPOSinverter P84, User Manual

Page: 263 / 405

Programming guidelines
ACOPOSinverter P84 User's Manual 2.10 263
2.8.11.21 Motor protection command
This allows the inverter to control a contactor located between the inverter and the motor. The request for the
contactor to close is made when a run command is sent. The request for the contactor to open is made when there
is no longer any current in the motor.
Caution!
If a DC injection braking function has been configured, it should not be left operating too long in stop
mode, as the contactor only opens at the end of braking.
Failure to follow this instruction can result in equipment damage.
2.8.11.21.1 Output contactor feedback
The corresponding logic input should be at 1 when there is no run command and at 0 during operation.
In the event of an inconsistency, the inverter trips on an
FCF2 fault if the output contactor fails to close (LIx at 1)
and on an FCF1 fault if it is stuck (LIx at 0).
With the parameter
[Delay start Mot.cont.]
(dbS) the triggering of the fault can be delayed in the case of a run
command and the parameter
[Time delay motor contact]
(dAS) delays the fault in the even of a stop command.
Note:
The fault FCF2 (the contactor does not close) can be switched on again by a change from 1 to 0 of the
run command (0 → 1 → 0 with a 3-wire control).
Control element Response
d01/R2
Functions [Out. contact.] (OCC) and [Output contact. fdbk] (rCA) can be used individually or at the same time.