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 / manunath
hi....
there may be chance of two problem
1.problem with scaling of signal or
2.check the system earth ie AI module earthing...some
time it will create problem..
thank u
Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
what about your moleg in pogrees with company
What is ultrasonic flowmeter?
How can you add value to this Industry if offered the job?
any questions on motor and energy conversions machines?
How earthing can be checked????
What is the difference between ff transmitter and non ff transmitter
my data card only does run in my mobile so how can change it that it run other mobile & computer and i can stor data in my data card
What is instrumentation control?
i have used level transmitter in starch cooking preparation tank. tank total height 2mtr.sometime LT display shows some error value when tank is fully empty and diaphragm side i already checked okay no problem in diaphragm area. field cable checked 24volt and mA shows correct value while tank empty mA is 4mA. 4mA i needed that 0% but display showing 10% or 15% percentage values are varying continously please give any good solution for me.....
What is standard of DCS panel design?and what is step of DCS panel design?wiring and type of connector(screw or DB connector)
how to check earthing,what is minum ohms for proper earthing
how do calibrate the valves.. with clear manual
WHY THE DEGREE OF VALVE PLUG AND VALVE SEAT IS SLIGTLY DIFFERENT I CONTROL VALVE TRIM DESIGN
Explain why plc require in analog input 4-20amp & 0-10 volt?
why use 50% lel methane gas concentration for gas detector calibration instead of 60% lel gas concentration whereas the hi alarm set at 60% lel.