Siemens SIMATIC HMI 177 Mode D'emploi page 11

Risk assessment
Performing risk assessment
The following standards must be used to perform the risk assessment:
● EN ISO 12100:2010, General principles for design of machinery
● ISO 14121-1:2007, Risk Assessment for Machinery
● EN ISO 13849-1:2008/AC:2009, Safety-related parts of control systems
These considerations result in a performance level (PL a to e) in accordance with EN ISO 13849-1:2008/AC:2009 which
ultimately dictates how the safety-related parts of the system to be monitored must be procured.
The connection examples with various monitoring devices in chapter "Wiring Examples for Enabling Switch and STOP
Button (Page 14)" show how the safety-related parts of the mobile panel can achieve Category 3 PL d in accordance with
EN ISO 13849-1:2008/AC:2009. Attention must be paid that the overall concept of the system is designed with this in mind.
Notes about Usage
Climatic ambient conditions for the connection box
The following table shows the permitted climatic ambient conditions for use of the connection box.
Ambient conditions
Operating temperature
Terminology
This product information conforms to Machinery Directive 2006/42/EC and EN 60204-1:2006.
EN 60204-1
EN 60204-1:1997
Enabling apparatus
To avoid confusing users, terms used in the past will continue to be used in future versions of the operating instructions.
Approval in accordance with EN ISO 13849-1:2008/AC:2009
A5E02519749-04, 12/2012
Permitted range
From 0 to 50° C
Comments
EN 60204-1:2006
Device for enabling control
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