Rockwell Automation 1752-L24BBBE SmartGuard 600 Controllers User Manual - Manual (Page 226)

226 Rockwell Automation Publication 1752-UM001E-EN-P - June 2014
Appendix D Function Blocks Command Reference
Safety Gate Monitoring Function Block Optional Outputs
Optional outputs may also be used in programming. To display these optional
outputs, check the appropriate checkbox on the Out point tab of the Function
Block Properties dialog box in the Logic Editor of RSNetWorx for DeviceNet
software.
• Discrepancy Error Pair 1
• Discrepancy Error Pair 2
• Function Test Required Signal
• Sychronization Error
• Function Test Error
Safety Gate Monitoring Function Block Fault Present Output Setting
The Fault Present output can also be used in programming. To enable this
output, check the Fault Present checkbox on the Out point tab of the Function
Block Properties dialog box.
Safety Gate Monitoring Function Block Function Tests
For some safety gate applications, such as Category 2, safeguarding devices
require physical verification that the gate continues to operate properly.
If the function test is enabled for the Safety Gate Monitoring function block, a
safety gate test, in which the safety gate must be physically opened and closed
again, can be added as a condition for turning on the Output Enable signal.
If enabled, the safety gate test must be executed under the following conditions:
• Startup – The safety gate test must be executed when the controller is
started, that is, when the operating mode changes from Idle to Run. If the
test ends normally, the Output Enable signal turns on.
• Function Test Request From the Machine – The safety gate test must be
executed after the controller detects the Function Test Signal from the
machine, turns on, and before the Function Test Signal turns on again. If
the Function Test Signal turns on a second time before the safety gate test
is completed normally, a function test error occurs, the Output Enable
signal turns off, and the Function Test Error Signal turns on.
• Error Detected in Safety Gate Monitoring Function Block – If a function
test error, a discrepancy error, or other function block error occurs, the
safety gate test must be executed after the cause of the error is removed.
The Function Test Required Signal from the Safety Gate Monitoring function
block turns on when a safety gate test is required. It remains on until the safety
gate test has been completed normally.