Rockwell Automation Publication 2198-UM002L-EN-P - October 2021 307
Chapter 9 Kinetix 5700 Safe Torque-off Function
Figure 148 - STO Function with Safe Stop Only-No Feedback (Logix Designer, version 31 or later)
STO Fault Reset
To clear the STO Fault condition, a transition from logic 0 to 1 of the SO.Reset
tag is required after the SO.SafeTorqueOff tag has transitioned from logic 0 to
1 (see Table 170
on page 304 for changes in STO tag names).
If the Kinetix 5700 servo drive safety controller detects a fault, the input
assembly tag SI.SafetyFault is set to 1.
To reset Axis.SafetyFault, an MAFR command must be issued.
Refer to Figure 149
for an understanding of the Kinetix 5700 STO state restart
functionality.
IMPORTANT
Transition of the SO.SafeTorqueOff tag to logic 1 must always be
executed prior to transition of the SO.Reset tag to logic 1.
IMPORTANT
All Kinetix 5700 inverter axes enter the faulted state if any STO
function fault is detected. Refer to Understand Integrated Safety Drive
Replacement on page 308 for integrated safety troubleshooting.
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