User Documentation

Periodic proof test procedure
1482880000/01/11.2017 15
11. Periodic proof test procedure
Step
Action
1
Bypass the safety PLC or take other appropriate action to avoid a false trip.
2
Connect a simulator identical to the input setup.
3
Perform an ON / OFF signal for each channel.
4
Observe whether the output channel acts as expected.
5
Restore the input terminals to full operation.
6
Remove the bypass from the safety PLC or otherwise restore normal operation.
This test will detect approximately 95 % of possible “DU” (dangerous undetected) failures in the pulse
isolator. The proof test is equivalent to the functional test.