Sto Fault Reset - Allen-Bradley PowerFlex 527 User Manual

The SI.ConnectionStatus tags indicate the status of the safety input connection.
Safe Torque-off Assembly Tags on page 105
controller tags when a PowerFlex 527 drive is added to a GuardLogix I/O
configuration and the connection is configured for "Motion and Safety" or for
"Safety only".
The "Attribute" values listed are the Assembly Object attribute values.
Safe Torque-off Assembly Tags
Logix Designer Tag Name
(1),(2)
SI.ConnectionStatus
SI.RunMode
SI.ConnectionFaulted
(1),(3)
SI.Status
SI.TorqueDisabled
SI.SafetyFault
SI.ResetRequired
(1),(4)
SO.Command
SO.SafeTorqueOff
SO.Reset
(1) Bits not listed are always zero.
(2) ConnectionStatus is determined by the Safety Validator in the GuardLogix controller.
(3) The Status is sent from the drive to the controller using the CIP Safety protocol.
(4) The Command is sent from the controller to the drive using the CIP Safety protocol.
ATTENTION: Only data listed in
SAFETY data with SIL 3 integrity.

STO Fault Reset

If a PowerFlex 527 drive safety control detects a fault, the input assembly tag
SI.SafetyFault is set to 1. A transition from logic 0 to 1 of the SO.Reset tag is
required after the SO.SafeTorqueOff tag has transitioned from logic 0 to 1.
To reset Axis.SafetyFault, a MAFR command must be issued.
Transition of the SO.SafeTorqueOff tag to logic 1 must always be executed prior
IMPORTANT
to transition of the SO.Reset tag to logic 1.
PowerFlex 527 drives enter the STO Fault state if any STO function fault is
IMPORTANT
detected. Refer to
integrated safety troubleshooting.
Rockwell Automation Publication 520-UM002B-EN-E - December 2017
Network Control of Safe Torque-Off
lists the SAFETY tags added to the
Attribute Type Description
[bit]
DINT
[0] BOOL See Table 10 - Safety Connection Status in
GuardLogix Safety Reference Manual,
[1] BOOL
publication 1756-RM099
0x1A0 SINT
[0] BOOL 0 = Torque Permitted; 1 = Torque Disabled
[6] BOOL 1 = STO Fault present
[7] BOOL 1 = A reset is required
0x180 SINT
[0] BOOL 0 = Disable Permit; 1 = Permit Torque
→
[7] BOOL 0 1 = Reset STO Fault
Safe Torque-off Assembly Tags on page 105
PowerFlex 527 Drive Troubleshooting on page 106
Chapter 6
is
for
105