Trip signals included in the general trip command which use status signals provided by the CB auxiliary contacts in addition to current flow monitoring, can be selected with the parameter CBF_1: Fct.assignm. CBAux. .

Applying CB status signals depends on the type of auxiliary contacts available. The P632 can check the following CB status signals for plausibility and evaluate them:

Note that each circuit breaker CBx is permanently assigned to the respective CBF_x function. In the following description, CB1 is used as an example.

The evaluation of the CB status signals is blocked, if the configuration of the respective binary signal inputs or the signal levels are not plausible. This will result in the P632 issuing the signal CBF_1: CB pos. implausible. Evaluation of current criteria is not affected by this blocking.

If only one of the two possible CB status signals has been configured, then this configured signal will always be considered plausible by the P632.

As an alternative, the status signals from the external device may be used; see Chapter “Coupling between Control and Protection for the CB Signals”. The assignment that is necessary for this is carried out with the parameters MAIN: Sig. asg. CB1 open or MAIN: Sig. asg. CB1 closed, using CB1 as an example. Status signals from external devices are processed similar to the CB status signals MAIN: CB1 open 3p EXT and MAIN: CB1 closed 3p EXT