can we control operation of PLC from operator station?

3 Answers  

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How can we measure the level of a closed system like drum

3 Answers  

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My rtd working well at the same time r/i converter is not working properly.when power is given to rtd..it is giving 30mA and getting 2.4 mA if i remove the compensate leads No matter how many ohms.why it is happening like so?what is the solution?rtd range-0-200deg c& 4-20 mA o/p.please give me solutiin anyone......

1 Answers  

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what is the different between plc and dcs ? I know full name of this two but I want to know what structure and working style and speed I/O capacity and controller difference?

2 Answers   L&T,

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a pressure transmitter with a range of 0 to 2500kpag has a specified accuracy of 0.5 % of span.It is to be calibrated using a comparison gauge to have an accuracy of 0.1% of span.The comparison gauge has a range of 0 to 3000kpag What is the accuracy ratio? is this ratio acceptable?

1 Answers  

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what do u mean by compensation n pid tunning?in pid tunning what you tunned?is it possible 2 tune p i d

2 Answers  

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Why any transmitter signal is 4-20 mA only Why is started from lower range 4 mA and upper range is 20mA.

5 Answers   Edac,

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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.

0 Answers  

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why we are using digital signals for I/O & how to measure this signals is getting or not ?

0 Answers  

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what is maxdna ?. explain about the software details.

0 Answers  

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can we change the range of 3151 model level transmitter of rosemount make? present calibration range is 1000mmwc and want to change it to 2000mmwc

4 Answers  

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how to calibrate motorized operated valve?

1 Answers   Bilt, Jubilant, SRF,

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