3SK1 devices
5.2 3SK1 Advanced
3SK1 safety relays
56 Manual, 04/2013, A5E02526190021A/RS-AA/01
5.2 3SK1 Advanced
5.2.1 General information
The safety relays of the Advanced device series comprise basic devices and input and
output expansions. The Advanced devices can be connected by means of a 3ZY12 device
connector.
When configuring the system, it must be ensured that input expansions are always mounted
on the left, and output expansions (3SK121) on the right of the basic unit. For control supply
voltages of 110 ... 240 V AC/DC, the Advanced device series can be supplied with the
necessary 24 V DC voltage from the 3SK1230 power supply (which must be positioned on
the extreme left in the system).
The focus of the Advanced relay series is on:
● Single devices that can be flexibly parameterized
● Expandability using 3ZY12 device connector on both input and output side
● Basic units with time-delayed enabling circuits / outputs
5.2.2 Applications
● EMERGENCY OFF / EMERGENCY STOP monitoring.
● Monitoring of protective doors with electromechanical position switches, solid-state
position switches, or solenoid switches.
● Monitoring of contact-free protection equipment, e.g. light arrays/light barriers, or laser
scanners.
The 3SK1 Advanced safety relays can be used in EMERGENCY OFF and EMERGENCY
STOP devices in accordance with ISO 60204-1 and in safety circuits in accordance with
VDE 0113-1 and / or DIN EN 60204-1, e.g. in circuits in which controlled shutdown, STOP
Category 1 is necessary. Depending on the external circuit, it is possible to achieve SILCL 3
in accordance with IEC 62061, SIL 3 in accordance with IEC 61508 and PL e (Cat. 4) in
accordance with ISO 13849-1.
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