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Recently a issue was faced that one I/O Module which was Redundant Analog Output Module failed and all the outputs went to initialization states.
We checked from the DCS Server station, and found the points analog output blocks gone inactive. We then activated the blocks one by one to restore it back. Later we also found that soft AO configuration was also changed as some of the valve were opened in field and DCS was showing 0% so we had to change action again to "reverse".
Please help me out what can be the cause of the AO card failure?
Why the point Analog Output block went to inactive state?
Why the action changed for some valves in configuration?
Please help me out what can be the cause of the failure of the AO module?
We checked from the DCS Server station, and found the points analog output blocks gone inactive. We then activated the blocks one by one to restore it back. Later we also found that soft AO configuration was also changed as some of the valve were opened in field and DCS was showing 0% so we had to change action again to "reverse".
Please help me out what can be the cause of the AO card failure?
Why the point Analog Output block went to inactive state?
Why the action changed for some valves in configuration?
Please help me out what can be the cause of the failure of the AO module?