Answer / ritona iramehr

anti surge is a system to protect the compressor against surging. you should pen and close this valve according to CSV (critical surge value). a number that you wont catch it .
but kickback is a valve that work in process. you should colse and open it according the situation of process. also a kick back can work as a antisurge in emergency condition.to only more protect of compressor. but not open this valve wont make problem for compressor

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difference between span and range

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2 Answers  

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Hi buddies! my name is sachin and i am working as a electrical and instrumentation engineer in a paper plant. right now i am facing a problem and if someone could help me it will be an immense pleasure to me. i am using AC 800M to synchronise DCS500 drives on paper machine and rewinder.communication is on PROFIBUS and we are using NPBA-01 module to link profibus to DC drives.But these days two of these drives are showing a error named FIELDBUS COMM.TIMED OUT and the drives get tripped.I have changed the NPBA module and PROFIBUS cable.So if anyone can do please help me out with this problem.I'll be highly grateful.

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1 Answers   CGL,

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