Trending Ladder Logic Discussions

Ladder Logic is similar to ? ‎

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Ladder Logic is similar to ?‎

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What is PLC's work in lime calcining plant? ‎

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Why we use 4-20ma rather then 0-20ma in control loop give 2 reasons?‎

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What is the function of ladder logic in Industrial Automation? ‎

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How easy is to progress on the ladder as an It specialist?‎

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Answer added by  Saif Ur Rehman, Deputy Manager E & I, Surge Laboratory
10 years ago

Use PLC Simulator Using FX Mitsubishi Trainer http://program-plc.blogspot.com/2011/04/plc-simulator-using-fx-mitsubishi.html

 

Answer added by  Costin Sirghei, LEAD ROTATING EQUIPMENT CONTROLS ENGG., General Electric
9 years ago

1. Live line detection, a small current flows so you'll know that you don't have an open loop., 2. Zero detection circuitry has to be added to field transmitter ... See More

 

Answer added by  obaidur rahman khan pintu, Process & Control Engineer, Gecat Ltd Co. Contractor of Saudi Aramco
7 years ago

REASON FOR 4 mA The reason for choosing 4 mA is when the transmitter were first introduced it was working on pneumatic pressure signal for transmission. later electronic ... See More

 

Answer added by  Daniel Dapun, Instrumentation and Control Engineer, Hedcor Sibulan Incorporated
9 years ago

If you use0mA, meaning, when you have an open loop, you'll have the minimum value you set in the program.   4-20mA is also used to prevent sparking in your loop beca ... See More