Allen-Bradley PowerFlex 527, Руководство пользователя

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98 Rockwell Automation Publication 520-UM002B-EN-E - December 2017
Chapter 5 Hardwired Control of Safe Torque-Off
System Operation when Inputs are Meeting Timing Requirements
Troubleshoot the Safe Torque-Off Function
PowerFlex 527 Drive Troubleshooting
Event Description
1 At least one input is switched off. GuardStopRequestStatus bit is set to 1.
2 Second input is switched off within 1 second. This must always occur within 1 second to prevent a
GuardStopInputFault condition.
3 First input is switched on.
4 Second input is switched on within 1 second of event 3.
5 Both inputs are in the ON state simultaneously within 1 second. As a result, the GuardStopInputFault is
not posted.
6 The GuardStopRequestStatus bit is set back to 0 if both inputs are in the ON state for 100 ms
continuously (100 ms debounce time).
(Safety Input) S1
1 3 4 5 6
Start Permit
OK
Permit Torque
Torque Permitted
Torque Permitted
(Safety Input) S2
GuardFault
SafeTorqueOffInhibit
GuardOKStatus
GuardGateDriveOutputStatus
GuardStopInputStatus
GuardStopRequestStatus
GuardStopInputFault
2
100 ms debounce time
1 second discrepancy limit
Start Inhibit
Torque Disabled
Disable Torque
No Fault
No Fault
Torque Disabled
Exception Code on Drive Display Fault Message
Logix Designer Problem Possible Solutions
SAFE FLT 09 - SS IN GuardStopInputFault Safe torque-off function mismatch.
System does not allow motion. Safe
torque-off mismatch is detected
when safety inputs are in a different
state for more than 1.0 second. • Verify safety wiring and connections:
– Wire terminations at safe torque-off
(STO) connector
– Cable/header not seated correctly
– +24V power
• Check state of safety inputs.
• Reset error and run proof test.
• Return drive for repair if fault continues.
SAFE FLT S01 - SAFETY CORE
INTERNAL CPUWatchdogFault
(1)
Drive safety diagnostic detected
internal STO design failure. • Cycle power.
• Return drive for repair if fault continues.
SAFE FLT S03 - SAFE TORQUE OFF SafeTorqueOffFault
(2)
Drive safety diagnostic detected
internal STO design failure. • Cycle power.
• Execute STO function.
• Return drive for repair if fault continues.
Hardwired safe torque off input
energized when drive is in network
safety mode. Reset the drive to out-of-box settings,
hardwired safety mode. Refer to
Restoring
the Drive to the Out-of-Box State on page 91
for instructions.
(1) Displayed in the LCD display as Module Fault.
(2) Displayed in the LCD display as Safety Fault.