QSHT 5700 Inverter Safe Torque-off Function
Hardwired Safe Torque-off
QuickStick HT User Manual
275
Rockwell Automation Publication MMI-UM007F-EN-P - September 2020
Wire the Safe Torque-off Circuit
This section provides guidelines for wiring safe torque-off connections to the QSHT 5700
inverter.
Install the Safety Connector Plug
The safety connector plug (PN-445389, TBPLUG, LOCKING, 180 Deg, RED, AU) has two
locking levers that are pushed in a clockwise direction as the plug is inserted into the QSHT
5700 inverter connector. This is the locked position. Rotate the levers counter-clockwise to the
open position to release the connector plug.
Figure 7-6: Insert the Safety Connector Plug
IMPORTANT
Push the locking levers clockwise into the locked position
while inserting the STO connector plug. Failure to do this
can result in the connector plug pulling out of the QSHT
5700 inverter connector during normal operation.
IMPORTANT
To improve system performance, run wires and cables in the
wireways as established in Establishing Noise Zones in the
Kinetix 5700 Servo Drives User Manual
.
IMPORTANT
Pins ST0-1 and ST0-5 (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 ST0-1 as a power supply
for the external safety device.
Locking Levers in
Locked Position
Locked Position
(rotated clockwise)
QSHT 5700 Inverter
Open Position
(rotated
counter-clockwise)
Push to Lock
(2x)
Push to Unlock
(2x)
Safety (STO)
Connector Plug
MOD–
NET–