Troubleshoot The Safe Torque-Off Function; System Operation In The Event Of Sto Inputs Discrepancy (Fault Case 1); System Operation In The Event Of Sto Inputs Discrepancy (Fault Case 2) - Rockwell Automation MagneMotion QuickStick HT User Manual

QSHT 5700 Inverter Safe Torque-off Function
Hardwired Safe Torque-off

Troubleshoot the Safe Torque-off Function

For QSHT 5700 inverter hardwired (STO) fault code descriptions and possible solutions, see
Table 7-2 on page 267
fault codes, and
IMPORTANT If both STO inputs are not in the OFF state simultaneously,
Figure 7-2 illustrates when the safe torque-off mismatch is detected and GuardStopInputFault
is posted.
GuardStopRequestStatus
Figure 7-2: System Operation in the Event of STO Inputs Discrepancy (fault case 1)
When one safety input is turned OFF, the second input must also be turned OFF within 1 sec-
ond, otherwise a fault is asserted (see
input is turned ON again, without the second input transitioning to the OFF state.
Figure 7-3: System Operation in the Event of STO Inputs Discrepancy (fault case 2)
272
or the Knowledgebase
2198-UM002, Kinetix 5700 Servo Drive User Manual.
within 100 ms, or after 1 second, then GuardStopInputFault
is posted for both stator inverter outputs.
24V DC
SS_IN_CH0
0V DC
24V DC
SS_IN_CH1
0V DC
1
SafeTorqueOffFault
0
1
0
1
GuardStopInputFault
0
Figure
24V DC
SS_IN_CH0
0V DC
24V DC
SS_IN_CH1
0V DC
1
SafeTorqueOffFault
0
1
GuardStopRequestStatus
0
1
GuardStopInputFault
0
Rockwell Automation Publication MMI-UM007F-EN-P - September 2020
KB Answer ID 1091727, Kinetix 5700 drive
1 Second Discrepancy Limit
No Fault
No Fault
7-3). The fault is asserted even if the first safety
1 Second Discrepancy Limit
No Fault
No Fault
Faulted
Stop Requested
Faulted
Faulted
Stop Requested
Faulted
MagneMotion