[FONT="]Hi everyone here,
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[FONT="]There is a big control valve - in the steam power plant where I work - controlled by Siemens' positioner (Sipart PS2 6DR52200EG000AA0),.. and the whole system is controlled through a DCS(PLC+SCADA).. Anyway, the positioer became brokendown, and it was replaced with a new one.. this latter one is a 4-wire type, and it receives all opening/closing commands from the SCADA very well (from 0% to 100% and vice versa).. it is OK except there is "No feedback" from this positioner on the SCADA screen in the control room,.. as the Actual Openning percentage (AO%) is remotely frosen at 13% ... Would you help me tackle this minor problem??[/FONT]
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