ฝัง
- เผยแพร่เมื่อ 5 ก.ค. 2024
- The LOGO! basic module has four 0 - 10 V analog inputs. This video shows how to convert and program for 4 - 20 mA signals.
0:00 - Intro
0:48 - Using a pot for setpoint adjustment on 24 V supply
1:59 - Industrial analog standards 0 - 10 V and 4 - 20 mA
2:34 - 4 - 20 mA analog inputs
4:41 - Analog signal from the IO simulator
5:07 - Pressure transducer 4 - 20 mA example
5:40 - Simple method for calculating the Analog Amplifier offset
6:35 - Message texts, values, scaling and bar graph
Check out the playlists for more videos on the LOGO! hardware and software.
❤ I love ..from Sri Lanka
Thank you 🎉
Please do more videos about logo :)
I am, thank you. What did you like? What could I do better?
I wish continued..PLC logo programming..
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.
@@QuickPLC-kh5of Thanks Sir
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.
thanks could you please explain for me the gain and offset
What do you not understand. Give enough details that someone could provide an answer.