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Installation manual
PSC1-C-10 Installation manual V2.6
Page 77 of 173
Version: 57E
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 5.6 Terminal assignment to find the individual terminals more quickly, e.g.
"IQQ00".
4.3.5.2.1
Single-channel circuit without testing
On the usage of a dual-channel output (IQQx) in conjunction with an external single-channel circuit
without external testing, it is to be noted that sticking of one or more external contacts will not be
detected by the PSC1-C-10-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.