Installation manual
Page 17 of27
5.1 Wiring of the relay outputs
5.1.1 Single-pole switching relay output without testing
For a single-pole connection without external testing, bear in mind that the PSCBR-E-133-
12DI-2DIO-8RO module will not recognize bonding of the internal relay or of one or more
external contacts. The following circuit example is only suitable for safety applications on a
limited basis;
at a maximum, Pl b according to EN 13849-1 can be achieved!
K1
K2
L+
L-
X17
X17.1
X17.2
X17.3
X17.4
Fig.: Single-pole switching relay output.
Safety note:
Not recommended for safety applications!
In this context see also the notes in EN 13849-1 concerning the application and the required
fault exclusions.
