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Installation manual
HB-37420-810-01-25F-EN SMX100 Installation manual.docx
Page 112 of 260
Version: 25F
4.3.4.2.5 Dual-channel output with relay output and semi-conductor output
– external control
circuit with monitoring
For safety applications from PI d and higher acc. to EN ISO 13849-1. The external circuit is
controlled in dual-channel mode via a relay and a semi-conductor output. Each of the two
external cutout paths is monitored. For PL e acc. to EN ISO 13849-1 a sufficiently high testing
rate and MTTF
D
= high is demanded for the external circuit.
Q1_PP
X21
X12
Q2_PN
Q3_PP
Q4_PN
Q5.1
Q5.2
Q6.1
Q6.2
X22
I13
I14
T1
T2
P
N
L +
L -
4.3.4.2.6 Dual-channel output with relay output and external control circuit in PI e
For safety applications from PI d and higher acc. to EN ISO 13849-1. The external circuit is
controlled in dual-channel mode via the relay outputs. For PL e acc. to EN ISO 13849-1
a sufficiently high testing rate and PI e is demanded for the external circuit.
L +
L -
Q5.1
X22
Q5.2
Q6.1
Q6.2
STO
Pl e