Answer Posted / anugrah nagar
LCN:It is called as Local control network.it is based on
Token passing Technology.Its speed is 5MBPS.LCN is used for
connect the system Network like PC,server with the help of
MAU assembly or etc.
UCN:-It is called as Universal control network.it is based
on Token passing Technology.Its speed is 5MBPS.UCN is used
for connect the Process Network like DCS,PlC Controller etc
with the help of UCN TAP assembly with the help of RG-6
coaxial cable(Drop Cable) or RG-11 coaxial cable(Trunk
Cable).RG-56 cable is used to connect NIM TO ucn CONTROL
NETWORK
| Is This Answer Correct ? | 4 Yes | 1 No |
Post New Answer View All Answers
dear sir we have insatlled positioner model no.sipart PS2 make Siemens at our control valves . now problem is if we want to increase the response of valve opening speedy /fast. what parameters do we change for positioner ? any idea. please guide us.
1.what is controller proportional gain 2.what is the controller intergral action time. 3.A proportional plus derivative controller that has a proportional band of 20% and a derivative action time of 0.1 minutes. Construct the shape of the output waveform for the triangular input if the input rises and falls at the rate of 4 units per minute.
what is the process to make control schematic ?
Why do we have earthing cable in branch cable and shield in the same cable?
What is furnace draft control?
how do i tune dearator pr control valve using PID. we set the set point is 0.6kg/cm2 now i want 0.5 to 0.7kg/cm2 limits so what should i give p,i,d values. then pls explain how do set pid values for control valve tuning?
-/5A. What is the meaning and limitations of this in energy meter constant. It is a 3 phase LT Energy Meter. If this Energy Meter is connected through a CT of ratio 200/5 Amps, then what is the multiplying constant and how its will be calculated.
How to convert Differential pressure to flow in TPH
Explain an adaptive / self-tuning controller’s major draw card.
How to calibrate H2s Dectector
Speedtronic system .
why is not useing in boiler skin thermocople
selection criteria of control valve? and selection criteria of actuator explain in brief?
I m appointed as an automation trainee engineer in small firm in that I am only the one , my company give me a project on s7-200 as i m beginner I don't know how to program so please send me the helpful site so that I complete my project before deadline....please help me out in this critical situation.
Can any one send me IOCL instrumentation question papers.. i dont know the pattern of the questions and what to prepare can any one help me on this .. my email id is anwarnishil@gmail.com
