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E-HELP: The Fault Alarm on the STA

E-HELP: The Fault Alarm on the STA

Q: Could you let me know the specific instances where the Fault Alarm trips on the STA Safety Trip Alarm are used?

A: The Fault Alarm (Alarm #3) is permanently set as a latching fault alarm that will trip if internally diagnosed faults or external faults – such as the loss of sensor or a “bad quality input” – occur. This alarm will trip without affecting the other relays being used to monitor the process. It can be used to warn of a failure without tripping more critical process alarms or shutting down the process.

More information can be found on Page 58 of the STA/TPRG Installation Manual.

Published: April 21, 2015
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