schmersal PSC1 Series Installation Manual page 76

Installation manual
4.3.4.2.7 Dual-channel output with semiconductor output and external control circuit in PL e
For safety applications from PL d and higher according to EN ISO 13849-1. The external circuit is
operated using two channels via semiconductor outputs. PL e is required for the external circuit for PL
e according to EN ISO 13849-1.
X21
Q0_P
Q1_N
Q2_P
Q3_N
Dual-channel output with semiconductor output and external control circuit in PL e
4.3.4.2.8 Dual-channel semiconductor output with dynamic test
For safety applications from PL d or higher according to EN ISO 13849-1. The external circuit is released
internally via two daisy-chained semiconductor outputs.
Due to the single-channel wiring, the notes for fault exclusion according to EN ISO 13849-2 Table D.4
must be considered. In addition, a corresponding PL is also required for the external control circuit, for
example by means of two contactors connected in series with evaluation of the feedback circuit
according to EN ISO 13849-1 Table E.1 and compliance of the MTTF
PL
PSC1-C-10 Installation manual V2.7
Version: 57E
STO
Pl e
values required for the respective
D
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