SIEMENS
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Siemens IC 10 · 2017
Safety Relays
SIRIUS 3SK Safety Relays
General data
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Overview
SIRIUS 3SK safety relays
SIRIUS 3SK safety relays are the key elements of a consistent,
cost-effective safety chain. Whether you need EMERGENCY-
STOP functionality, protective door monitoring, light arrays, laser
scanners or the protection of presses or punches – slimline
SIRIUS safety relays enable all safety applications to be imple-
mented in the best possible way in terms of engineering and
price.
The following safety-related functions are available:
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Monitoring the safety functions of sensors
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Monitoring the sensor leads
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Monitoring the correct device function of the safety relay
•
Monitoring the actuators in the shutdown circuit
•
Safety-related disconnection when dangers arise
SIRIUS 3SK safety relays are approved for applications up to
SIL 3 (IEC 61508/IEC 62061) or PL e (EN ISO 13849-1).
Device series
SIRIUS 3SK safety relays stand out due to their flexibility for both
parameterization and system designs with several evaluation
units. Optimized solutions when selecting components are
facilitated by a clearly structured component range:
•
3SK1 Standard basic units
•
3SK1 Advanced basic units
•
3SK2 basic units
•
3SK1 output expansions
•
3SK1 input expansions
• Accessories
3SK1 Standard basic units
The 3SK1 Standard basic units are characterized by the
following features:
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Compact design
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Simple operation
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Relay and semiconductor outputs
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Economical solution
3SK1 Advanced basic units
The 3SK1 Advanced basic units also offer:
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Universal application possibilities thanks to multifunctionality
•
Time-delayed outputs
•
Expansion of inputs and outputs
3SK2 basic units
The 3SK2 basic units also offer:
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Up to six fail-safe, independent shutdown functions
•
Flexible in use thanks to software parameterization
•
Powerful semiconductor outputs
•
User-friendly diagnostics using diagnostics display and
configuring software
In the case of 3SK1 Advanced basic units or 3SK2 basic units,
the 3ZY12 device connector allows safety functions involving
several sensors and actuators to be constructed very quickly.
System configuration example
The 3SK1 and 3SK2 Standard and Advanced series are a
high-quality replacement for the 3TK28 safety relays. In their
narrower design, and equipped with greater functionality, they
can replace every 3TK28 device. The only exception to this are
the 3TK2810 devices.
More information
Home page,
see www.siemens.com/safety-relays
Industry Mall,
see www.siemens.com/product?3SK
Conversion tool e.g. from 3TK28 to 3SK,
see
www.siemens.com/sirius/conversion-tool
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Standard mounting rail
Device connector
SIRIUS 3RM1 motor starter
SIRIUS
3SK1211 output expansion
SIRIUS 3SK1121 Advanced basic unit
SIRIUS 3SK1220 sensor expansion
Device termination connector
IC01_00336b
© Siemens AG 2016