Good morning,

I'm trying to read a "current" temperature on my 6ED1052-1MD08-0BA1 logo via a pt1000 probe.

This turns out to be impossible, it displays a fixed value of 200C°. It is connected to I7, the program uses AI1.I actually use one of your example programs for reading.

I use google translate for the post

Hello again,

In fact it works much better with an AM2 RTD module.THANKS.

The next part of the project is to maintain the temperature of the wood stove at 120°C with a fan.The stove reaches 120°C, ventilation starts, the stove heats up, the fan turns stronger, the stove temperature decreases, the fan turns less strong.If it drops to 80C° the fan turns off.

I measured a maximum temperature of 300c°.We can also imagine proceeding in stages.

To do this, I have an AM2 AQ module linked to a Niko 330-00701 drive.

I found the post https://support.industry.siemens.com/forum/be/en/posts/pt100-temperature-regulated-exhaust-fan-control/153697 which seemed to be a similar case, but no currentcomes out of the AM2 AQ module.

Is it possible for you to help me?

once 80c° is reached the air is no longer hot enough to warm the room it is therefore no longer useful to turn the fan hence the idea of an On at 120c° and an Off at 80c°.

We can very well imagine operating in stages e.g.: 120c°-140c°= 25% 141c°-160c°= 50% 161c°-180c°=75% 181c°-200c°= 100%.

Very accurately we can in fact put the On/Off at 120c° and forget the Off at 80c°.

Concerning the equipment I relied on my reseller, the one who had training on the Seimens Logo...

Do you think that the operation of the project is impossible with this material?

All of this still doesn't explain why I can't get a signal out of the AM2 AQ.

If I put an On/Off at the same temperature I will have a problem with switching on and off unexpectedly, 120c° the fan starts 5 seconds after it turns off and so on.If the Off temperature is sufficiently lower then there is no longer a problem.

In the hope of making myself understood.Thank you anyway for giving me your time on a Sunday.

I still have the same problem with your program.AQ 1 displays the values 250/500/750/1000 correctly.My wiring must not be good.I'm sending you a photo without knowing if it will help you.

Your assistance will probably stop there.

You've already done a lot.Thanks for your help.

Indeed I now have an output voltage!

As for the problem with the variator, I will check it with my dealer.

Thank you again for your help and congratulations on your efficiency.