SIEB & MEYER sinudyn-0360520 Series, Hardware Description

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Safety Circuit / Restart Lock
:
78 Hardware Description 0360520sinudyn-36
12.2 Wiring example
In order to obtain the safety level SIL 3 according to EN 13489-1, the safety relay
combination as well as the switches "servo lock 1" and "servo lock 2" have to be cer-
tified safety switch devices. The switches "servo lock 1" and "servo lock 2" must be
utilized as positively driven n/c contacts or as a combination of switches with con-
junction (plausibility check).
* pins of the connector "Restart lock"
Warning
The two relays (connected in series) of the safety combination used
for deactivating the transistors of the output stages meet the require-
ments of EN 50205:2003-1 and have been approved by the TÜV
Rheinland and VDE (as well as UL and CSA).
Warning
Without an additional redundancy (evaluation of the contact signals),
the safety level SIL 3 according to EN 13849-1 cannot be realized.
Warning
In order to obtain the safety level SIL 3 the circuit and the layout have
been dimensioned according to IEC 60664-1:2008-01. Supporting
material according to IEC 6024 covered by a non-aging protective
coat of lacquer according to IEC 60664-3:2003-09 have been used.
The conformity of standard have been tested and approved by the
TÜV-Nord CERT.