Rockwell Automation Publication 2198-UM004A-EN-P - October 2019 385
Kinetix 5100 Safe Torque Off (STO) Feature Chapter 13
Cascade the Safe Torque Off Signal
The total number of drives in a single cascaded safety circuit is limited by the
current carrying capacity of the cascaded safety circuit. Refer to Table 115
for
current rating per channel, per drive.
Figure 198 - Cascaded Safe Torque Off Wiring
Safe Torque Off
Specifications
To maintain the safety rating, Kinetix 5100 drives must be installed inside
protected control panels or cabinets appropriate for the environmental
conditions of the industrial location. The protection class of the panel or cabinet
must be IP54 or higher.
Table 115 - Safe Torque Off Signal Specifications
24V DC
SB+
S1
S2
SS+
SB–
S1C
S2C
SS–
SB+
S1
S2
SS+
SB–
S1C
S2C
SS–
SB+
S1
S2
SS+
SB–
S1C
S2C
SS–
First Drive
Middle Drive
Last Drive
Dual-channel
Equivalent
Safety Device
Attribute Value
Safety inputs
(per channel)
Input ON voltage 11…30V DC
Input OFF voltage, max 5V DC
Input ON current, per input, max 7.34 mA
Input OFF current, max
(@ V in < 5V DC)
2.9 mA
Pulse rejection width 60 µs
Feedback output OFF current, max 100 µA
Feedback output ON current, max 40 mA
Feedback output OFF voltage, max 30V DC
Feedback output ON voltage, max 1.5 V @ 40 mA
External power supply SELV/PELV
Input type Optically isolated and reverse voltage protected
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