Rockwell Automation Publication 2198-UM005C-EN-P - February 2022 159
Chapter 9
Kinetix 5300 Safe Torque Off Function
The Kinetix® 5300 servo drives support the hardwired Safe Torque Off (STO)
function as defined by IEC 61800-5-2. The hardwired STO function meets the
requirements of Performance Level d (PLd) and safety category 3 (CAT 3) per
ISO 13849-1 and SIL CL2 per IEC 61508, IEC 61800-5-2 and IEC 62061.
The 2198-Cxxxx-ERS servo drives use the STO connector for wiring external
safety devices and cascading hardwired safety connections from one drive to
another.
Certification The TÜV Rheinland group has approved 2198-Cxxxx-ERS servo drives with
hardwired STO for use in safety-related applications up to ISO 13849-1,
Performance Level d (PL d) and Category 3, SIL CL 2 per IEC 61508,
IEC 61800-5-2, and IEC 62061, in which removing the motion producing power
is considered to be the safe state.
For product certifications currently available from Rockwell Automation, go to
website rok.auto/certifications
.
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 ISO 13849-1 performance level
or IEC 62061 SIL level
• Project management and proof testing in accordance with
ISO 13849
Topic Page
Certification 159
Description of Operation 160
Probability of Dangerous Failure Per Hour 164
Safe Torque Off Connector Data 164
Wire the Safe Torque Off Circuit 165
Safe Torque Off Feature 166
Safe Torque Off Specifications 168
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