Endress+Hauser Proserve NMS80 Functional Safety Manual page 28

Use in safety instrumented systems
28
End of test sequence C
• The device has failed the proof test if the expected current value/relay resistance
value at a specific level deviates by >±2 %. For troubleshooting, refer to the
Operating Instructions→  8. This test detects 95 % dangerous, undetected failures
(proof test coverage (PTC) = 0.95).
• If the "Expert" menu group is selected, a prompt for the access code appears on the
display. If an access code has been defined under Setup → Advanced setup
→ Administration → Define access code this must be entered here. If no access code
was defined, the prompt can be acknowledged by pressing the "E" key.
Proserve NMS80
Endress+Hauser