User's Manual

Rockwell Automation Publication 440G-UM004C-EN-P - August 2020 11
Chapter 2
Safety Concept
Safety Standards
The Guardmaster® 440G-MZ safety switch satisfies applicable requirements in
the following standards that are related to functional safety and machinery
assembly:
• IEC 60947-5-3
•IEC 61508
•IEC 62061
•EN ISO 13849-1
• ISO 14119
•UL 508
Safety Certification
The 440G-MZ safety switch is certified for use in safety applications up to and
including SIL 3 according to IEC 61508 and IEC 62061 with a proof test interval
of 20 years, and Performance Level e (PLe) Category 4 in compliance with ISO
13849-1.
Safety requirements are based on the standards applicable at the time of
certification.
The TÜV Rheinland group has approved the 440G-MZ safety switch for use in
safety-related applications where PLe is required for the door position
monitoring and guard locking functions.
The 440G-MZ safety switch must be installed in accordance with the applicable
regulation and standards.
While the 440G-MZ safety switch can be used for SIL 3, PLe, and Category 4
applications, the installation must comply with guard requirements (for
example, ISO 13854 and ISO 13857), and in some cases minimum (safe)
distance requirements (for example, ISO 13855).
The installed system, including the safety control system and the means by
which the machine stops, must achieve the needed safety performance. The
440G-MZ safety switch is one element in the safety system.
Additional guidance on guards, guard locking and guard interlock can be
found in:
• EN ISO 12100
•EN ISO 13854
•EN ISO 13855
•EN ISO 13857
• EN ISO 14119
• EN ISO TR 24119
• EN ISO 14120
• Application-specific C-level standards