SIEB & MEYER sinudyn-0360520 Series, Hardware Description

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Restart Lock acc. to Safety Concept K2
sinudyn-36 Hardware Description 0360520 83
13.2 Wiring Example
Combining a safe emergency stop command device, an OSSD safety switch device
or a light barrier with OSSD outputs and the safe switching off of the pulse patterns
allows creation of an error detection circuit, which achieves a safe stop (according to
stop function category 0+1), which meets the safety requirements according to SIL 3
(EN 13849-1). This circuit allows connecting several emergency stop devices in par-
allel, which are permanently monitored.
b
/
The external 24 V voltage supply must be protected against over-
voltages.
Warning
The safety device as well as the emergency stop device must be cer-
tificated as safety devices of SIL 3 to obtain safety level 4 according
to EN 13849-1.
Warning
In order to obtain the safety level SIL 3 according to EN 13849-1 the
circuit and the layout have been dimensioned according to IEC
60664-1:2008-01 pollution 2. Supporting material according to IEC
60249 covered by a non-aging protective coat of lacquer according
to IEC 60664-3 have been used. The conformity of standard have
been tested and approved by the TÜV-Nord CERT.