Rockwell Automation Publication 2198-UM001M-EN-P - November 2022 157
Chapter 9
Kinetix 5500 Safe Torque Off - Hardwired Safety
The 2198-Hxxx-ERS servo drives are equipped for hardwired Safe Torque Off
(STO). The hardwired STO function meets the requirements of Performance
Level d (PLd) and safety category 3 (CAT 3) per ISO 13849-1, and SIL 2 per
IEC 61508, IEC 61800-5-2, and IEC 62061.
A ControlLogix® 5570, ControlLogix 5580, CompactLogix™ 5370, or
CompactLogix 5380 controller is required for hardwired safety control of the
Kinetix® 5500 Safe Torque Off function. The 2198-Hxxx-ERS servo drives use
the STO connector for wiring external safety devices and cascading hardwired
safety connections from one drive to another.
Certification The TÃœV Rheinland group has approved 2198-Hxxx-ERS servo drives with
hardwired Safe Torque Off for use in safety-related applications up to
ISO 13849-1, Performance Level d (PLd) 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
You, the system user, are responsible for the following:
• Validation of any sensors or actuators that are 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 157
Description of Operation 159
Probability of Dangerous Failure Per Hour 161
Safe Torque Off Connector Data 161
Wire the Safe Torque Off Circuit 162
Safe Torque Off Feature 163
Safe Torque Off Specifications 164
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