p100

hi hi
I have a poroblem with jumo pt100 tempruture metter -50°c to 50°c 0-10v and i connencted with 2 wire connection to plc, On this pictures whit this post you can se it is showing 10.9°c but the the real heat is 18.6°c..... what can be the problem ???

The connection is
minus from power supply to analog module
and + is from power supply to pt100 and from pt100 to analog modul

What analogue module are you using.

If your PT100 is -50C to 50C your scaling is wrong.

Cheers

Mark

MarkNightingale said:

What analogue module are you using.

If your PT100 is -50C to 50C your scaling is wrong.

Cheers

Mark

Click to expand...

im usin 1762 - if20f2
ok and whot is the right scaling thenn ?

ok and whot is the right scaling thenn ?

Click to expand...

Scaled Min should be "-50", not "0".

I think the Input Min should be 0.
The Transmitter is 0-10V not 2-10V

siggibald a little more information is needed to help you on your problem. In your post you mention JUMO PT100 temperature 0-10 v but in your SCP you have the min/max raw value as though it was 4-20ma.
Is the JUMO PT100 a RTD, if so is it wired to a transmitter of some kind? What is the output of the transmitter? is it 0-10 or 4-20?
I'm assuming the PLC is a micrologix's