Safety Instructions; General Safety Notes - Siemens SIRIUS 3SK1 Equipment Manual

Safety instructions

2.1

General safety notes

Note
SILCL 3 in accordance with IEC 62061:2005PL e / Cat. 4 in accordance with EN ISO 13849-1:
2008
The 3SK11 / 3RQ12 safety relays are designed in such a way as to allow implementation of
applications up to SILCL 3 in accordance with IEC 62061 and PL e / Cat. 4 in accordance with
EN ISO 13849-1.
Note
SILCL 2 as per IEC 62061 / PL c / Cat. 2 as per EN ISO 13849‑1: 2008 for 3RQ10 coupling relays
The 3RQ10 positively-driven safety-related coupling relays are designed in such a way as to allow
implementation of applications up to SILCL 2 in accordance with IEC 62061, PL c / Cat. 2 in
accordance with ISO 13849-1.
Note
Safe state
The basis of the safety function is the definition of the safe state. In the case of safety relays, this
is the "OFF state", i.e. an open contact for sensors or shutdown of the actuators.
Hazardous voltage. Can cause death or serious injury
To ensure touch protection and degree of protection IP20, screw in all screws which are not
used for conductor clamping and close the terminal covers.
Protection against electrically conductive contamination!
The devices must be protected against conductive contamination while taking account of the
ambient conditions. You can achieve this by installing the devices in a control cabinet with the
appropriate degree of protection.
You will find more detailed information in IEC 60529, for example.
SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays
Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005
DANGER
WARNING
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