Any PLC (or other similar instrument) that has a 0-5VDC or 0-10VDC analog input also basically has a 0-20mA or 4-20mA input capability. For example, if you were to connect a 250 Ohm resistor across that PLC's 0-10VDC input, and then also connect your 4-20mA current loop to those same terminals, your PLC would measure a voltage in the range 1-5V, which you can then scale as required using the match functions of the PLC.
Nice video as always Pete. If you want to save yourself some cash for a 0-10V input. You can make a potential divider circuit putting a 5k potentiometer in series with a 6.8k resistor and coming off the middle to the analogue input. Feeding one side of the 6.8k resistor with the L+ terminal on the s7-1200, the other side goes to both the analogue input and the wiper of the pot, the other side of the pot goes to the M terminal on the s7-1200. I have actually built this in to a S7-1200 PLC trainer and it works a treat. I know you said you didn't have the skills or time, but this is pretty simple and will save you money should you want to utilise the other analogue input. Love all your PLC content. thanks from the UK.
Aww i thought it would actually generate the 0-10v 4-20mA signal by itself. No matter I will copy you pete and supply the 24v from the plc to the Droking. Still waiting for mine in Nigeria.
@@chuchuokeke Congratulations ! even though it's quite late ! Could you please share your experience with me in terms of reliability and accuracy, please i'm planning to buy one
Here is the playlist for Siemens TIA Portal: ru-vid.com/group/PLyL0ResmI4Q3HIWvnMM18XpXkFMsS9Bcj The playlist should be in order. It starts with and/or, then 2/3 wire, then counters, and finally timers. Mixed in are some videos on Factory IO. Thanks for the comment Wade
Dear Sir, The disadvantage of the Drok Signal Generator device is that there maybe no power supply for it on the site. So, how can we use it? Do you suggest we should use a portable power supply source like batteries or something else? If yes, is there a specific Volt (VDC) and Amps (A) to use as a power supply for it?
It requires 24V DC which you can pick up off the PLC power supply. Out in the field though, you would be using a Process meter such as this one: www.itm.com/product/fluke-789-process-meter?gclid=Cj0KCQjwy8f6BRC7ARIsAPIXOjjmnz_pPN1kO-WdxuW7zVKxI1IA9M2sfV6lOf1pElvXcbWPpmC5SlsaApAgEALw_wcB
There are separate terminals for 0-20mA and 0-10V, and a small dip switch.This unit is robust and has worked for my classroom. There are other units out there with more capabilities www.amazon.ca/Generator-Adjuatable-Simulator-Rechargeable-Debugging/dp/B0BC1GXX67/ref=asc_df_B0BC1GXX67/?tag=googleshopc0c-20&linkCode=df0&hvadid=581952261100&hvpos=&hvnetw=g&hvrand=9330995650934605111&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9000928&hvtargid=pla-1810259595800&psc=1
@@PeteVreeHi, I am not an engeneer but I am trying to make a device that is feed by: 1. In 110V 2. Out: 0-60V - 0-35mA. (with a knob to control the voltage and if is possible the mA as well. I want to use it as a intophoresis device. Can you help me out with the project? If there is a price, please let me know. Thanks.
