Rockwell Automation 2094-EN02D-M01-S1 Kinetix 6200 and Kinetix 6500 Safe Speed Monitoring Safety Reference Manual - Manual (Page 14)

14 Rockwell Automation Publication 2094-RM001C-EN-P - May 2013
Chapter 1 Safety Concept
Important Safety Considerations
The system user is responsible for the following:
• Validation of any sensors or actuators connected to the system
• Completing a system-level risk assessment
• Certification of the machine to the desired EN ISO 13849-1 performance
level or EN 62061 SIL level
• Project management and proof testing
• Programming the application software and the drive configurations in
accordance with the information in this manual
• Access control to the system, including password handling
• Analyzing all configuration settings and choosing the proper setting to
achieve the required safety rating
Safety Category 4 Performance Definition
To achieve Safety Category 4 according to EN ISO 13849-1:2006, the safety-
related parts have to be designed such that:
• the safety-related parts of machine control systems and/or their protective
equipment, as well as their components, shall be designed, constructed,
selected, assembled, and combined in accordance with relevant standards
so that they can withstand expected conditions.
• basic safety principles shall be applied.
• a single fault in any of its parts does not lead to a loss of safety function.
• a single fault is detected at or before the next demand of the safety
function, or, if this detection is not possible, then an accumulation of faults
shall not lead to a loss of the safety function.
• the average diagnostic coverage of the safety-related parts of the control
system shall be high, including the accumulation of faults.
• the mean time to dangerous failure of each of the redundant channels shall
be high.
• measures against common cause failure shall be applied.
IMPORTANT When applying functional safety, restrict access to qualified, authorized
personnel who are trained and experienced.
ATTENTION: When designing your system, consider how personnel exit the
machine if the door locks while they are in the machine. Additional
safeguarding devices can be required for your specific application.