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QSHT 5700 Inverter Safe Torque-off Function
Hardwired Safe Torque-off
274
MagneMotion
Rockwell Automation Publication MMI-UM007F-EN-P - September 2020
Safe Torque-off Connector Data
Two rows of eight pins are provided for making inverter-to-inverter connections. The inverter
has pins designated for inverter A and inverter B.
Figure 7-5: Pin Orientation for 16-pin Safe Torque-off (STO) Connector
Table 7-4: Safe Torque-off Connector Pinouts
STO Pin
Description
Signal
1
Safety bypass plus signal. Connect to both safety
inputs to disable safe torque-off function.
SB+
2
10
Safe stop input channel 1, inverter A.
S1A
3
11
Safe stop input common, inverter A.
SCA
4
12
Safe stop input channel 2, inverter A.
S2A
5
13
Safety bypass minus signal. Connect to safety com-
mon to disable safe torque-off function.
SB-
6
14
Safe stop input channel 1, inverter B.
S1B
7
15
Safe stop input common, inverter B.
SCB
8
16
Safe stop input channel 2, inverter B.
S2B
9
N/C
—
S1A
SCA
S2A
SB-
S1B
SCB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
SB+/NC
S2B
MMI-HT-C2198-D032
Safety (STO) Connector Plug