Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / ahmed bilal
PLC is programmable logic contol, while DCS is distribution
control system.
PLC is for operating certain number of devices on the basic
of analog / digital outputs. Normally the output of
industrial devices is in analog, which comes to PLC kits
where they are converted to digital with ADC than excuted
instructions according to program spscified by user. In
this wasy we can control multiple devices.
DCS is for controlling over all network. Basically many
block of PLC when optomized than the name becomes DCS
| Is This Answer Correct ? | 19 Yes | 12 No |
Post New Answer View All Answers
What are different types of valves?
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 Erosion in a control valve?
How to convert Differential pressure to flow in TPH
What is stripper & spilitter ? Diffrence in this.?
What is the difference between ff transmitter and non ff transmitter
I want to buy a seal kit of a pneumatic power cylinder.But I don't know it's specification.So please help me to know its specification.
HI, can anybody give details about GAS TREATMENT PLANT CONSTRUCTION,as INSTRUMENTATION ENGINEER what are the responsibilites.what are the instruments mainly instrumentation engineer will deal with
How is PH sensor works ?
when the instrument tapping on pipe line is located below and transmitter is located above the tapping point for liquid service transmitter, what should we do, is there any additional drain valve is required??
Explain signal isolator
For crude application in floating roof tank, how to calibrate a DP Transmitter? How is the floating roof weight considered?
How to calibrate Magnetic flow Transmitter in Field
Explain about safety integrated level protection? . How it was differ from other protections ?
How to calibrate displacer type level transmitter (chemtrol make )for level measurement in hotwell , LP & HP heater ?
