Rockwell Automation Publication 2198-UM001D-EN-P - May 2014 157
Chapter 9
Kinetix 5500 Safe Torque-off - Hardwired Safety
This chapter introduces you to how the hardwired safe torque-off feature meets
the requirements of Performance Level d (PLd), Category 3 according to
EN ISO 13849, and SIL CL2 according to IEC 61508, EN 61800-5-2, and
EN 62061.
The 2198-Hxxx-ERS servo drives use the safe torque-off (STO) connector for
cascading hardwired safety connections from drive-to-drive.
Certification
The TÃœV Rheinland group has approved the 2198-Hxxx-ERS servo drives with
hardwired safe torque-off for use in safety-related applications up to PLd,
Category 3 according to EN ISO 13849 and SIL CL2 according to IEC 61508,
EN 61800-5-2, and EN 62061, in which removing the motion producing power
is considered to be the safe state.
Refer to Appendix E on page 229
for these certification documents.
• EC Type - Examination Certificate
• EC Declaration of Conformity
• European Union Directives
Important Safety Considerations
The system user is responsible for the following:
• Validation of any sensors or actuators connected to the system
• Completing a machine-level risk assessment
• Certification of the machine to the desired EN ISO 13849 performance
level or EN 62061 SIL level
• Project management and proof testing
Topic Page
Certification 157
Description of Operation 158
Probability of Dangerous Failure Per Hour (PFH) 161
Safe Torque-off Connector Data 162
Wire the Safe Torque-off Circuit 162
Safe Torque-off Feature 164
Safe Torque-off Specifications 165
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