Thank you for the feedback. We hope that your lives can get back to normal as soon as possible. There are many refugees from your country in my town in Ireland.
I really benefited a lot from your wonderful channel I have a solar energy system to charge 54 VDC batteries, and I want to control the turning on and off of the electric generator at values for example: 44 - 60 VDC volts using the Siemens logo!8. Is there a voltage sensor for this? or any anther ideas Thank you for your help🌹
If the LOGO! M (negative) is connected to the solar system negative then you can just use a pair of resistors to make a potential divider. A 9k - 1k divider would give you 4.4 to 6.0 V input to the LOGO! and that would give you 440 to 600 counts inside the LOGO! Make sure to calculate the power dissipated in the resistors using V^2/R for each resistor.
Can you do one with pressure sensor (or temperature) to include threshold triggers and mathematic instructions? Let me expand. You have a 0-10V, 0 to 16 bar pressure sensor and you set up the gain, install it and instead of showing the working pressure of 3.8 bar, it reads 3.2 bar. Can you show using mathematic instruction or similar how to trim the resulting pressure to read correctly. Also add threshold triggers for alarms on same.
What is the configuration of your analog amplifier? The analog videos seem to be of higher interest than others. I'll see if I can do some more. Thanks!
First check the signal arriving at the LOGO! 3.8 bar / 16 bar * 10 V = 2.37 V. If you don't measure that with a meter then the problem is outside the LOGO! If you can't fix it then you need to rescale your reading by 3.8 / 3.2 = 1.1875. So instead of Measurement Range maximum = 160 or 1600 make it 160 * 1.1875 = 190 or 1900. Set the decimal places in message text to 1 or 2 depending on your 160 or 1600 for 0.1 bar or 0.01 bar steps.
Correct. This is explained clearly at around 3:27. While you lose some resolution, you gain a ""live zero" and save the cost and space of an analog module. You said, "... or the same resolution." I don't understand that part of your comment. Thank you for the feedback.
