schmersal PSC1 Series Installation Manual page 81

Installation manual
4.3.5.2.3 Circuit with safe shutdown circuit
For safety applications from PL c and higher according to EN ISO 13849-1. The external circuit is
operated directly using a dual-channel output. The achievable PL according to EN ISO 13849-1 is
dependent on the usage of dynamic testing (see 4.3.2.1) as well as the PL for the subordinate device.
X21
IQQ02
IQQ03
IQQ04
IQQ05
L +
L -
Dual-channel output in conjunction with device with tested shutdown
4.3.5.2.4 Circuit in conjunction with dual-channel shutdown circuit
Suitable for PL d or higher according to EN ISO 13849-1. Usage of one output IQQx in conjunction with
a dual-channel external circuit with testing. In particular, positively driven auxiliary contacts are
required for electromechanical devices, or valve position signal contacts are required for this purpose
for hydraulic or pneumatic components.
The achievable PL is dependent on the dynamic testing as well as the MTTF
maximum of PL e according to EN ISO 13849-1 can be achieved!
X21
IQQ02
IQQ03
IQQ04
IQQ05
X12
I12
I13
T0
T1
L +
L -
Dual-channel output in conjunction with dual-channel shutdown circuit with testing
PSC1-C-10 Installation manual V2.7
Version: 57E
STO
Pl e
for the external circuit. A
D
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