Siemens SIRIUS 3RK3 - Product-Specific Information; General Safety Notes

Product-speci󹪝c information
2
2.1 General safety notes
Note
SIL 3 to EN 61508:2010
PL e/Cat. 4 per EN ISO 13849-1:2008
The design of the 3RK3 modular safety system allows implementation of applications up to SIL
3 per EN 61508 and PL e/Cat. 4 per EN ISO 13849-1.
WARNING
Hazardous Voltage
Can Cause Death, Serious Injury, or Property Damage.
Hazardous electrical voltages can cause electric shock, burns and damage.
• Turn o󹪜 and lock out all power supplying the system and device before working on the
device.
• To ensure protection against the hazard of electric shock when the terminal cover is open,
screw in all terminal screws that are not needed to clamp conductors.
• Close the terminal covers and always keep them closed during operation.
WARNING
Risk from Conductive Contamination
Can Cause Death, Serious Injury, or Damage to Property.
The devices must be protected against conductive contamination while taking account of the
ambient conditions. One way you can do this is to install the devices in a control cabinet with
the appropriate degree of protection.
You will 󹪝nd further information in the IEC 60529 standard, "Degrees of protection provided by
enclosures (IP Code)" and in Chapter "Technical data (Page 365)".
NOTICE
Electromagnetic interference
The following must be grounded in accordance with the regulations in order to ensure noise
immunity of the MSS components:
• MSS components
• PELV / SELV power supply units (also note the documentation for the respective power
supply unit in this regard).
The PROFINET / PROFIBUS must be grounded according to the installation guidelines for
PROFINET / PROFIBUS networks.
SIRIUS 3RK3 Modular Safety System
Equipment Manual, 07/2020, NEB926253002000/RS-AC/006 25