Interested to Buy Any Domain ? << Click Here >> for more details...
WHAT IS THE DIFFERENCE BETWEEN DCS & PLC.
- 9 Answers
- 14219 Views
- Reliance, I also Faced
- E-Mail Answers
Answer Posted / hari
DCS can handle 32 loops can be handle in single shot.
but plc can perform less than DCS..
DCS had faster scaning time.
plc can handle 6 loop in single shot
DCS can be programmed like FBD
| Is This Answer Correct ? | 1 Yes | 3 No |
Post New Answer View All Answers
A flange is used for instrument connection for a system with a design temperature of 316C (600F) and a design pressure of 1000 kPa (145 psi). What is the class rating of the flange to be used for this application? Explain your answer
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.
what is surge and how is it prevented, what is the purpose of bypass valve across AS valve.
can you provide me full detail about instrumentation in ONGC??
What are continuances of connecting earthing and shield of branch cables (instrument to Junction box), at the same earthing pot provided on JB? Is it ok, or may produce some problem?
How does your previous experience relate to the job you are applying for ?
IS there any effect of vortex in low pressure side of the transmiter after the orific in feed water line? if yes then what is the calculation?
which processor is used in dcs.
what is interlock system and why we use of this?
Why 4-20 amps is being used in instruments? Why cant we use any other range instead of 4-20 amps? Why only 4 amps is taken as lower limit and why 20 amps is taken as the higher limit?
what is the current pay package for an instrumentation engineer having 2 years of experience in cryogenic technology???????
what are the documents(Construction point of view for a process plant) submitted by contactor initially entering in to new site for client?
How to calculate P,I&D value in PID controller ?
where proximity sensor installed on tank in loading arm application
What is ultrasonic flowmeter?
