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Gas turbines have rendundant automation processsors. we switched over from Master to slave by turning off the power supply module. there is no issue and changeover was smooth without affecting the plant operation. When we switched back from standby (acting master) to master (acting slave) we lost signal to HMI(PCS7) and turbine went to unknown state (it is tripped actually).
we use PCS7 DCS. for sure there will not a trip externally.
could anyone suggests how to overcome this issue?
we use PCS7 DCS. for sure there will not a trip externally.
could anyone suggests how to overcome this issue?