Discussions Populaires Dans la Communauté Langage Ladder

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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La répondre a été ajoutée par  Saif Ur Rehman, Deputy Manager E & I, Surge Laboratory
Depuis 10 années

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

 

La répondre a été ajoutée par  Costin Sirghei, LEAD ROTATING EQUIPMENT CONTROLS ENGG., General Electric
Depuis 9 années

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 ... Voir Plus

 

La répondre a été ajoutée par  obaidur rahman khan pintu, Process & Control Engineer, Gecat Ltd Co. Contractor of Saudi Aramco
Depuis 7 années

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 ... Voir Plus

 

La répondre a été ajoutée par  Daniel Dapun, Instrumentation and Control Engineer, Hedcor Sibulan Incorporated
Depuis 9 années

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 ... Voir Plus