Rockwell Automation Publication 2198-UM004D-EN-P - December 2022 415
Chapter 13 Kinetix 5100 Safe Torque Off (STO) Feature
Safe Torque Off Connector
Data
The Kinetix 5100 drive ships with the (8-pin) wiring-plug header that connects
your safety circuit to the Kinetix 5100 drive Safe Torque Off (STO) connector.
The header includes jumper wires that by-pass the safety function for drives
that do not use the Safe Torque Off feature. Remove the jumper wires when the
Safe Torque Off feature is used.
Figure 224 - Pin Orientation for 8-pin Safe Torque-off Connector
Wire the Safe Torque Off
Circuit
This section provides guidelines for wiring your Kinetix 5100 Safe Torque Off
(STO) drive connections.
SB–
S1C
S2C
SS–
SB+
S1
S2
SS+
Table 128 - Kinetix 5100 Drive Safe Torque Off Connector Pinout
Description Signal
Used for safety jumper + SB+
Used for safety jumper – SB–
STO_A+ S1
STO_A– S1C
STO_B+ S2
STO_B– S2C
Safety status or feedback SS+
Safety status or feedback SS–
IMPORTANT
Use pins SB+ and SB– only for the by-pass jumpers to defeat the Safe
Torque Off function. When the Safe Torque-off function is in
operation, the 24V supply must come from an external source.
IMPORTANT
The National Electrical Code and local electrical codes take
precedence over the values and methods provided.
IMPORTANT
To improve system performance, run wires and cables in the
wireways as established in Establish Noise Zones beginning on
page 43
.
IMPORTANT
Pins SB+ and SB– are used to disable the safe torque-off function.
When wiring to the STO connector, use an external 24V supply for the
external safety device that triggers the safe torque-off request. To
avoid jeopardizing system performance, do not use pin SB+ as a
power supply for the external safety device.
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