schmersal PSC1 - Example Circuits for Safe Digital Outputs I;O (Iqqx)

Installation manual
HB-37420-810-01-25F-EN PSC1-C-100 Installation manual - V2.2.docx Page 87 of 201
Version: 25F
4.3.5.2 Example circuits for safe digital outputs I/O (IQQx)
Attention! Identifiers for "Xxy" terminal blocks e.g. X12 are not printed on the terminal blocks.
They are used in Section Fehler! Verweisquelle konnte nicht gefunden werden. Fehler!
Verweisquelle konnte nicht gefunden werden. to find the individual terminals more quickly,
e.g. "IQQ00".
4.3.5.2.1 Single-channel circuit without testing
When using a dual-channel output (IQQx) in conjunction with a single-channel external circuit
without external testing, it must be noted that sticking of one or more external contacts will not
be detected by the PSC1-C-100-x module. The example circuit in the following is only suitable
for safety applications to a limited extent; a maximum of PL b according to EN ISO 13849-1 can
be achieved!
IQQ00
X12
X21
IQQ01
T0
T1
L+
L-
IQQ02
IQQ03
IQQ04
IQQ05
IQQ06
IQQ07
IQQ08
IQQ09
X22
Dual-channel output with single-channel circuit without testing
Safety instructions:
• Not recommended for safety applications! On this topic, see also the information in EN
ISO 13849-1 on usage and the fault exclusions necessary.