Siemens SIRIUS 3SK1, Manual

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3SK1 safety relays
Manual, 04/2013, A5E02526190021A/RS-AA/01
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Introduction
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1.1 User responsibility for system design and function
The products described here were developed to perform safety-related functions as part of
an overall installation or machine.
A complete, safety-related system is generally equipped with sensors, evaluation units, and
signaling units, and uses reliable shutdown concepts.
It is the responsibility of the manufacturer of a system or machine to ensure that the product
functions properly.
Siemens AG, its regional offices, and associated companies (hereinafter referred to as
"Siemens") cannot guarantee all the properties of an entire plant, system or machine that
has not been designed by Siemens.
Nor can Siemens assume liability for recommendations that appear or are implied in the
following description. No new guarantee, warranty, or liability claims beyond the scope of the
Siemens general terms of supply are to be derived or inferred from the following description.
1.2 Required basic knowledge
A general knowledge of the following areas is needed in order to understand this manual:
● Low-voltage switchgear
● Digital circuit logic
● Automation systems
● Safety systems
1.3 Validity range
The manual is valid for these safety relays SIRIUS 3SK1. It describes the components that
are valid at the time of publication.
SIEMENS reserves the right of including a Product Information for each new component,
and for each component of a later version.
1.4 Definitions
"3SK1" always applies to all variants of the SIRIUS 3SK1 safety relays.