CS3000 function block issue
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I would like to ask what it means when the control mode changes to IMAN. What exactly does IMAN affect? When does it switch to IMAN mode? I’ve tried reading the PDF file for a long time but still can’t understand its meaning; please help me understand it, experts! Thank you!!
These are previous questions and answers from Haiyou regarding this issue. I hope this helps you. http://bbs.hcbbs.com/thread-238222-1-1.html
IMAN: In simple terms, it means that the output from the previous functional block is not passed on (the output does not reach the subsequent functional block). As a result, the output remains in a tracking state. At this time, an IMAN indication appears on the previous functional block. If the subsequent functional block is set to CAS or AUT, the output is passed on (it reaches the subsequent functional block), and the IMAN indication disappears from the previous functional block.
It means manual initialization; this occurs when the downstream module is not in a cascade mode or when the FCS is just starting up and in its initialization phase. It is a default feature of the Yokogawa system.
As mentioned upstairs, it is indeed the state of this component at initialization; it is in the first state, and it is possible to manually adjust the values of MV and SV.
IMAN occurs when the output of the previous functional block does not reach the current functional block; by setting the output of that functional block to AUT or CAS, the display of IMAN can be eliminated.