schmersal PSC1-C-10 Series Installation Manual page 74

Installation manual
4.3.4.2.5 Dual-channel output with relay output and semiconductor output – external control
circuit with monitoring
For safety applications from PL d and higher according to EN ISO 13849-1. The external circuit is
operated using two channels via one relay output and one semiconductor output. Each of the two
external shutdown paths is monitored. An adequately high test rate as well as MTTF
external circuit are required for PL e according to EN ISO 13849-1.
X21
Q0_P
Q1_N
Q2_P
Q3_N
X12
I12
I13
T0
T1
X22
Q4.1
Q4.2
Q5.1
Q5.2
L +
L -
P
N
Dual-channel output with relay output and semiconductor output – external control circuit with monitoring
4.3.4.2.6 Dual-channel output with relay output - 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 the relay outputs. An adequately high test rate as well as PL e for the
external circuit are required for PL e according to EN ISO 13849-1.
X22
Q4.1
Q4.2
Q5.1
Q5.2
L +
L -
Dual-channel output with relay output - external control circuit in PL e
PSC1-C-10 Installation manual V2.6
Version: 57E
STO
Pl e
= high for the
D
Page 74 of 173