In RTU Panel we are having several Analogue & Digital
Inputs /Outputs. We are recently facing some problems over
Analog inputs , which are not updating properly (But
Digital Input are updating normally) Can any one tell me
from where the problem is creating , we have checked PLC
CPU card, Analog Input card & we reconfigured ,But still
the issue is there.
Issue :
1. Sometimes Analog values are updating & sometimes not.
2. Analog values are not updating normally , showing some
wrong Values
3. Total dead (0 value)
Analog values are Level & flow measurement from the field
instruments.
(But in field the instruments are working normally &
Displaying the values normally in local display unit)
This problem we are facing in our Water Plant.
If any one experienced this same problem or having any
ideas related to our issue PLS send your valuable
Answers/Replies...
Answer Posted / mudassir
please check the cables scaling upto the RTU we face same
problem here in that i made only remove the cables clen them
and reconnect them then it works normal but in one that i
shuffle the AIS
Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
how can leve transmetter calibate in feild .and also put cv and flow plz .....
Draw a wheatstone bridge circuit showing supply, meter and 3 wire RTD connection
Explain working principle of lvdt?
what step is taken for ESD ( emergency shut down) in DCS REPLY to hashimka20009@gmail.com
How to Calibrate Radar Level Transmitter in Field
what is RTV function in in process control?
Boolean algebra
SOME OF YOUR QUESTIONS ARE NOT MAKING ANY SENSE SO TRY AND PUT IN A LITTLE BIT MORE EFFORT BEFORE YOU POST A QUESTION. WE WILL ONLY HELP THOSE WHO WE CAN SEE ARE TRYING TO HELP THEMSELVES.
Explain PID controller tuning & any one method used for it.
List three types Level Gauges with their working principles
Why do you want to work here
What is the difference bitween control net scaner and device net scaner
How does a single acting, spring return ball valve actually work? Does it require continuous air supply?
IN CONTROL VALVE SPECIFICATIONS GENERALLY TERM " DE- 200" ."DM -400"USED,, WHAT IS DE/ DM STANDS FOR?
what is orfics working in main steam line. is it increase pressure, velocity of steam flow and dicrease steam flow rate. or any other