HB-37350-810-01-50F-EN PSC1-C-10 Installation manual V2.1.docx Page 42 of 189
Version: 50F
4 Safety-related features
4.1 General layout, safety-related architecture and characteristic data
The internal layout of the PSC1 series comprises two separate channels with mutual result
comparison. High-quality diagnostics are undertaken in each of the two channels for fault
detection.
The architecture and principle of operation of the layout corresponds to category 4 in EN ISO
13849-1.
I
A
O
A
L
A
I
B
O
B
L
B
m
m
i
i
c
i
m
i
m
Sensor PES Aktuator
S
A
S
B
The overall architecture therefore has the following layout:
Double reading of each input and diagnostics by means of cross comparison
You will find the specific safety-related characteristic data for the related modules in the tech.
characteristic data in section 3.
For the safety-related assessment of overall systems, the characteristic data stated in section
3 can be used for the PES sub-system (e.g. PL e and PFH value according to table for
verification as per EN ISO 13849)
Only to be considered when using secure remote I/O communication (SDDC, in preparation)
for data exchange with distributed I/O systems and for master – master communication
(SMMC, on request):
In conjunction with the expansion modules the layout is more complex.
Along with the structures of the expansion modules, the bus communication is also to be taken
into account here. The safety-related equivalent circuit / architecture is to be determined in
relation to the application.
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