Allen-Bradley Kinetix 5700, User Manual, Page: 259 / 376

Rockwell Automation Publication 2198-UM002E-EN-P - February 2018 259
Kinetix 5700 Safe Torque-off Function Chapter 9
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 wiring. Refer to
Table 134 for
current rating per channel, per drive.
In this example, the cascaded safe torque-off (STO) wiring is for one single-axis
inverter application.
Figure 112 - Cascaded STO Wiring - Single-axis Inverter
In this example, the cascaded safe torque-off (STO) wiring is for one dual-axis
inverter application with a separate safety device for each axis.
Figure 113 - Cascaded STO Wiring - Dual-axis Inverter with Two Safety Devices
1
2
12
3
4
5
6
7
8
9
10
11
13
14
15
16
1
2
12
3
4
5
6
7
8
9
10
11
13
14
15
16
SB+/NC
S1A
SCA
S2A
SB-
N/C
N/C
N/C
1
2
12
3
4
5
6
7
8
9
10
11
13
14
15
16
SB+/NC
S1A
SCA
S2A
SB-
N/C
N/C
N/C
24V DC
SB+/NC
S1A
SCA
S2A
SB-
N/C
N/C
N/C
First Drive
Middle Drive
Last Drive
Dual-channel
Equivalent
Safety Device
1
2
12
3
4
5
6
7
8
9
10
11
13
14
15
16
1
2
12
3
4
5
6
7
8
9
10
11
13
14
15
16
SB+/NC
S1A
SCA
S2A
SB-
S1B
SCB
S2B
1
2
12
3
4
5
6
7
8
9
10
11
13
14
15
16
SB+/NC
S1A
SCA
S2A
SB-
S1B
SCB
S2B
24V DC
SB+/NC
S1A
SCA
S2A
SB-
S1B
SCB
S2B
First Drive
Middle Drive
Last Drive
Dual-channel
Equivalent
Safety Device
Dual-channel
Equivalent
Safety Device