How to configure analog input on v200-18-E5B

[Marko984]

Hi

Im totally new at this (this is my first project)

Im using V500 whit snap in module V200-18-E5B, and in trying to configure analog input for levels.
Input is 4-20mA.

As I understand this, I need to connect (com) to power (-), power(+) to device(+), device(-) to AN0.
I also have current transmitter so I can simulate input.

I have picture of what I have set up so far. But still I have no visible reaction on display. 

Sorry, english is not my main. Tnx in advance

Marko

[Flex727]

Two things.

 

The input you receive at MI0, MI1, & MI2 will be an integer from 204 - 1023. Do you have a linearization block to convert the number to something meaningful (e.g. tank level from 0-100% or perhaps tank volume from 0 to 70 gallons, or whatever the tank capacity is)?

 

Your tank variable appears to be improperly set up. The min and max parameters should be whatever 4mA and 20mA represents (i.e. the limits you have on your linearization block). MI0 does not go there.

[Ausman]

Hi Marko, your English is much better than my Croatian!!

 

Additional to Flex's comments, before doing anything further in the main program to show the values, check the following points and then make sure that the raw input is showing a value and moving up or down appropriately.

 

1).  Look at this forum topic:   http://forum.unitronics.com/topic/3920-thermocouple-no-reading/   You may not have power to the snap-in module correctly set up.  It is very easily missed and you will not get anything analogue until correct.

 

2).  Make sure all the jumpers on the module are set correctly.  Carefully read the information sheet about the snap-in which explains it (and the power connections if still puzzled)  If you don't have the snap-in set correctly and power supplied to the correct places you will not get the result you want.    http://www.unitronics.com/Downloads/Support/Technical%20Library/Vision%20Hardware/Snap-in%20IO%20Modules%20-%20Specifications/V200-18-E5B.pdf

 

cheers,

 

Aus

[Marko984]

Thank you guys for responding.

To be honest I didn't know i need to use Linearization block. I have read the instruction and this is what I got so far. 

Linearization
 
http://t40i.imgup.net/Linearizat292a.png
Im trying simple 0-100%

Tank graph set up

http://z27i.imgup.net/graphsetupfd81.png
Parameters are same like Y in Linearization

 

 

Wire set up

http://w53i.imgup.net/Wiresetup8f60.jpg

Its a bit hard to see, brown 24VDC, blue 0VDC, black analog com, red analog input, connected to current transmitter.

Jumper set up for Analog input

http://q75i.imgup.net/Jumpersetu20d2.jpg

I have some response from 0-13 mA up to about 50%, then after that I have no response at all.

I have no trouble with digital inputs or outputs.

Tnx in advance 
Marko

Edit: I don't know why images are broken, I can open them in new tab, I have put a link under them.
tnx
Marko

Edited April 1, 2016 by Marko984

[Ausman]

Hi again Marko, I can't open your images so can't comment too much.

 

To perhaps help you with Linearisations, have a look at another post of mine that has a calculator.  It makes it easy to see what results you should be getting from inputs, and also better explains X&Y.   

 

http://forum.unitronics.com/topic/3540-linearization-calculator-for-all/

 

cheers,

Aus

[Flex727]

I can't open your images either, but I do want to say I didn't mean to say that you HAD to have a linearization block, just that it would give you more meaningful numbers to work with. You could just as easily use 204 and 1023 as your min and max, respectively, in the tank variable, but if you want to display a value for tank level in addition to the graph, the user will not easily understand what it means without the linearization.

[Marko984]

Thank you for replying. The project is complete. Problem was in jumpers. And also tnx for all the other tips, without them I would not set it up properly.
I have learned a lot.
Thank you again.
Until next time. 

Marko