The PC1001-A3 and PC1002-A3 Cerberus PACE Compact digital audio matrix boards both provide a dedicated potential free system fault relay connector. This connector lies in the inputs/outputs area on the lower left side of the board.

The relay is activated in the regular operating mode. The relay is released in case of a fault.

The relay contacts can switch a voltage of up to 48 V.

System fault connector

System fault connector

System fault connector

Pin

Description

Remark

Function

1

NC

Normally closed

Connected to C during a fault condition

2

C

Common

Middle contact

3

NO

Normally open

Connected to C in the regular operation