Actual using of tube bender to bend 2 opposite 90 deg at correct measurement center to center of tubing.

0 Answers   CCIE,

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A PLC is programmed to drive three motors A, B and C as follows : After running motor A for an hour, motor B should get ON and motor A should get OFF. And after running motor B for an hour, motor C should get ON and motor B should get OFF. And after running motor C for an hour, motor A should get ON and motor C should get OFF. (That is, a cyclic repetition with time period one hour) Now, the second condition is: If any motor gone faulty and is tripped, the consecutive motor should get ON and the faulty (tripped) motor should be eliminated from cyclic repetition. The remaining two motors should bear the cyclic repetition of one hour each. (For healthy motor take logic as high and for tripped motor take logic as low) Now, the third condition is: When motor A load(Amps) exceeds 60% of its rated load, motor B should get ON in parallel to motor A. And when both motors A & B are running in parallel, and if their load exceeds 60% of their rated load, motor C should also start in parallel to A & B. [Here the cyclic repetition is eliminated, until their loads become normal(40%)] [Take logic high(1) for load at 60% and logic low(0) for load at 40%] Now draw a flow chart or a ladder diagram to fulfill the above condition.

0 Answers   MNC,

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WHAT ARE THE INSTRUMENTAL DIAGRAMSOF VALVES?

0 Answers   Artikal, ITC Infotech,

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how to calibrate 0- 150 psi presure gauge by dead weght tester

0 Answers  

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What is shielding effect?

0 Answers   Process Control Technologies,

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Draw a complete P&ID of a flow suction tank indicating all control & protection equipment. Indicate all its inlets and outlets. Explain the controls for this system

0 Answers  

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Pls can anybody tell me how much memory plc's has?in byte or in Kb

2 Answers  

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WE Know that different supply voltage of solenoid valve like 24,110,220 etc..how we check the solenoid supply is 24v or 220 NOTE: No specification at device.

2 Answers   OMV,

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Explain PID, ON/OFF, Controls

0 Answers   CCIE, Gulf Engineering,

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The Design Calculation of Level Transmitter For Different Structure open & Closed Vessel, Eg. Diff. Level Tx., Capacitance For Continous Operation

0 Answers   Reliance,

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What is Cavitation?

2 Answers   Gujarat Borosil,

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how to design orifice plate?what is the equation?

0 Answers   REL,

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