18-Apr-2022

Setting Parameters On The Mypin T Series Pid Controller

Well, welcome back today, we've got the TA for the pin ta for PID. Now, this is already I've already got it on the bench or I, got it wired up, so we're, not going to go through the wiring process. What we're here to do today is to set the parameters, and we're going to show you how to go inside and adjust everything you need. So I know, it can be confusing if you read the directions, but trust me, we're going to demystify that whole process for you so that you can be successful it's, not that difficult, and we'll. Do it step-by-step so that you can see, and then we'll explain every one of them.

So it'd take a few minutes, but we'll explain every one of those parameters and then how to set it. And then the settings I have found that are most appropriate for our use. So let's get started. So here we have the T series. And this one is the TA for my pin PID controller. They come in a t, a4 a6, a7 and a9.

All of them are all adjusted exactly the same way. The parameters are set the same way so follow along with these same. Instructions for anyone that you have the only difference is what's known as their din. And the din is the size of the box itself. You know, ta 6 is a little taller and a little wider. And then the TA 7 is narrow, but a lot taller.

And then the 9 is just a bigger one. So, but they all operate the same way now, here's, what is important to know now when they come this one came from the factory, just like this. All I did was wire it up. So this is what you'll see on yours, depending on the. Temperature which right now I'm reading 22 point, three degrees Celsius. And it said, it's, seventy-four point two we have, you know, it's our out lamp if you're familiar with these that means that your solid-state relay is energized. Because of the error rate in between these two numbers, that's, what you're perceiving and that's, what you want it to be.

So a process value set value. Now, there are two functions in here that you need to be aware of one of them is sort of like a base function. And to get. To that you've got the green up in the green down, the arrow keys. If you push them both at the same time and hold them for about five seconds, it'll enter that subcategory. And this is the lower set point, and you can use this by just hitting the blue arrow, and you'll. Notice, it starts to flash, and you can change that digit up or down and that's the lower set point.

So if you want your lower set of your lower set point limit to be a certain limit, if you could try to enter a number lower than that, it. Won't take it, then we have the upper set point limit and that's set at 1200. So you can't set higher than 1200 in this, unless you tell it you want to, and we're going to leave that alone. Hysteresis is that excellence that band of excellence. And that is that a little above and a little of below that set point that you want to operate in now we're going to leave this at 1. The reason we're going to leave this is 1 is that we're gonna use this as a PID controller, not in the manual mode.

Then you. Have hysteresis to same function decimal point, one there's, one decimal place. So you'll have your degrees will be. Seventy-eight point one, seventy-eight point two. And if you change that to a zero, there will be just 78 degrees. So we leave it at set point at the decimal place. One all right hit that one more time.

It takes you to the lock. And this is a set key it's, it's already pre-programmed. The 15 guys know why they do that because I've never had to use that just skip over it. Now, if you hold. The set button it'll, go right back to its normal operation. Now, here's, what we're going to do we're going to get into the actual parameters that's going to make this a PID because right now as it comes out of the box, it operates as a proportional, integral controller, not a course, proportional, integral and derivative controller and that's, because the derivative portion comes turned off and with proportional integral, you will almost reach your set point, but you'll never quite get there.

It's. Just. Mathematically impossible that doesn't matter let's get to it. You hold the set key for about five seconds, and you'll enter the alarm mode. Okay, that's alarm. Number one and that's set at. So once it reaches 100, the alarm will go off.

You can set that, and you can make that any value you want that to be just. So it doesn't interfere with me, I'm gonna I'm going to set that value it like 300 I'm. Never going to get there. But the reason we'll set it there is that I just don't want it to interfere. I, don't know, The lights coming on when I'm doing everything else, then you've got the AO too, or I'm, sorry, the AO one. And what that is that's going to be when when do you want the alarm to happen? Do you want it to happen at the perceived value at the height at the high alarm or do you want it to set at the low alarm?

And you've got seven selections 1 through 7, leave it on number 2, if you're going to be using the alarm? Okay? And then next we have the alarm - that's set at 450 you'll. Notice I set the other one. High so that one set it high to say it, won't interfere with any of our process and the same thing with AO 2 for your alarm, setting just leave that at number 2. Okay, we got PUF. And the PUF is going to be the offset value.

And that offset value is if you know that your thermocouple is sensing. One degree off or two degrees off. You can set that in here as a positive or a negative number, just by pushing the blue button in the upper down arrow keys. And you can make an adjustment to that it's called the. Offset go to the next one input type we're using a k-type thermocouple. So when you use a k-type thermocouple, make sure it's set to this small character, it looks like a backwards. Y next is P, and your proportional band is set at 1 now as the proportional band being set at 1 that what that is it's, a one-to-one ratio of the integrals or of the power that's going to be provided, and it's a long, drawn-out explanation leave yours at 1.

But this is how you're going to get from your air to your. Set point now we go to the interval and the interval usually comes set at about 240. This was set at 540 I'm going to leave that there.

So 540 times a second because these are set by seconds. Now you see there, the D that's, the derivative portion, remember that derivative is that measurement underneath the curve from your error to your set point. And what it does is it kind of gives you an opportunity to predict the future based on past performance, but right now it's set to OFF so let's set that. So there. You go now we've got a number set in there, and I'm going to set this at what I know to be a good number. And you just keep going there. It got 100 200, and you can leave that at 200, or you can play a little more go to 240.

We go to 260, but that's. The derivative process is going to take place during your intervals. No intervals.

Next one hit the set button. It saves. It hit the set button again. And we are on heat mode because we're going to be operating heat. If you want to operate cool, you push the blue.

Button up arrow. It goes to cool now, you're operating cooling, so we'll leave that on heat. Next one is the hysteresis it's set it one preset in one from the factory. Now if we're using a PID, we don't have to concern ourselves with the hysteresis only if the PID is turned off, but right now, the PID is turned on. Okay. This one is a control.

And this is if you're going to use this for an analogue setting, and I've got this set to one and that's for digital. If usually it comes at set at 20, and you want to. Set that to 1 if you're going to use it in a digital controller and that's, what we're going to use it for 20 is the number of times it's going to operate that contact, and the more times you're going to operate that contact in a manual, relay you'll burn it out. But so 20 times is the limit that you put on that. And this won't happen once constantly so in its electronic. Now, next one we go to is centigrade Fahrenheit now I told you they come preset to centigrade, push that button till it starts. Flashing change it to an F, push the set button, and you're.

Now in Fahrenheit let's, push it now here's your late, and it takes you right back to all 1. Now, let's turn, push the button, hold the set button, or if you just leave it set for about 20 seconds, it'll, go back itself. Now, you'll notice, it's, sensing, 72.7 and is set at seventy-four point two now let's set that just a little closer and to set to change the set value, push the blue button, push the blue button again, to bring it over to the next. Digit go down now we're set at seventy-three point, two I, push set, and it saves that, so you'll, notice that it's set at seventy-two and my set value, seventy-three, but it's sensing. Seventy-two, if I push the set button, one time, it's going to let me know how much power the PID is producing in order to get from where it's at to where it wants to go, and you'll, notice, it's changing back and forth because it's its testing its, like am. I there yet am I there yet. Am I there I'm, not there yet, okay, I'll keep?

Trying it until I get there, this will go all the way down to into the teens or back up. So you can use that like an amp meter let's press that one more time. Now, one last thing you can do with this, which is really fun to do is once you get it set in your first operation, push and hold the blue button, and you'll. Notice that this green eighty light comes on that's your auto-tune and let you process, one cycle with auto-tune, and it will fine tune all of those settings for you. So and to turn that.Auto-tune off, you just push and hold the blue button, and it goes off. So there you have it that's how you set your PID. Now, please comment send us some information call questions.

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