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In this video, we're going to go over how to set up a PID
function on an Altivar process drive.
As you can see here, we've got an Altivar 630 drive, a 630 U073N3.
And it's got the former version, 1.5, i.e., 11.
So let's escape out.
We're going to start from your Main Menu.
Go down to Complete Settings.
And the first thing you want to do when doing a PID function is you
want to check your macro configuration.
So here, we have it set to Generic Pump Control.
As you see, you have other macro configs.
You've got the Pump Level, the Pump Booster, and the Generic Fan Control.
But for this setup, we just need Generic Pump Control.
So I'm going to escape out.
So after setting-- after checking or setting your macro configuration,
you're going to go down to Menu 5.3, still in the Complete Settings Menu.
And you're going to look at your units.
Define System Units-- as you can see, we have it set up for Psi.
But it depends on what you're going to be using.
So if you've got a pressure transducer, 4 to 20 milliamp pressure transducer,
and you're wired to this drive, that pressure transducer may
be using units of Bars, or Psi, or whatever units it might be.
But for this example, we're going to use Bars.
So I'm going to change it from Psi to 1 Bar.
Sorry, it's a little sensitive here.
All right, so once you set your unit, you're
going to go down to the Pump Functions Menu, which is Menu 5.6, also
in the Complete Settings.
And then you're going to go to PID Controller.
As you can see, we don't have the feedback set up yet.
So we're going to start that.
And we're just going to do-- show some basic setups.
So the first thing it asks you here is the type of control.
And we're going to change that to Pressure.
But you have the option for Pressure, Flow, and Other.
In most scenarios, you're going to be using pressure.
So we're going to set that to Pressure.
And then next it's going to ask you for a PID Feedback, a Feedback Assignment,
in other words, your sense of where is it physically wired to on this drive.
If it's a 4 to 20 milliamp sensor, in most scenarios,
it's going to be on the AI3 terminal.
But you determine what terminal you want to use.
And you would configure it how best to work with that transducer.
So for this example, we're to use AI3.
And as soon as you do that, you notice some other settings come up.
We're going to check the AI3 type.
And as you can see, it's got several options here.
You can either set it to Voltage, or you can set it to Current.
So I'm going to use Current.
Then I'm going to adjust the Min and the Max Value.
We want a 4 to 20 milliamp transducer.
I'm going to go here, and I'm going to change it over to 4.
So I've got 4 milliamps here.
And I've got a max of 20 milliamps.
Next, you've got your Min PID Feedback and your Max PID Feedback.
And we normally want to set these to the range of your transducer.
So let's say your range is 0 to--
let's use a range of 0 to 1,000 Bars.
So what I'll do is I'll go ahead, and I'll set this over to 0.
And I'll leave the Max at 1,000.
And then the next basic setting we're going to look at is in the next tab.
So as you can see, I'm in the Feedback tab.
And then you've got the Reference tab.
And you've got the Settings tab, and a IL tab.
By pressing the F2 button, it's going to skip over to the next tab.
This is the Reference Frequency tab.
So these has all-- these are still your PID settings
but all broken down into the Reference section.
So the first thing in this section that you want to do
is you want to turn on your PID--
internal PID Reference.
So I'm going to set that to Yes.
And that gives me the internal PID reference parameter here, in this part.
But let me go over this Min and Max PID process, what this is.
So let's say you have a 0 to 1,000 Bar pressure transducer,
and you have a window.
Let's say you don't want to work with the whole range,
but you want to work with a small window within that range.
This is where you would set that window.
So let's say I want to work with a window of--
I'm just making up numbers here--
200 to 500 Bars.
So I'm going to go here.
I'm going to set this to 200.
And I'm going to come over here to the Max.
And I'm going to set this over to 500.
So what that does now is my internal PID reference, which
is your set point, by the way, so this is how you would put in your set point.
Now, as you notice, it only will work between that Min and Max settings
in the previous two settings we just did.
So let's say I want to do a minimum or a set point.
I want to keep it around say 450 bars.
Let's say that.
So I'm going to go here, and I'm going to adjust this to 450.
All right, so I've just told the drive that the drive
is going to control your speed.
I've just told it that I've got a sensor on here,
and I'm going to try to keep it around 450 Bars.
And the drive will do its best to maintain that.
And so that's the basics of how to set it up.
But we're going to go over a few other parameters in here.
For one, we have the Auto Manual Assignment here.
This is just an additional setting.
If you have a Handoff Auto Selector switch,
and you want to be able to switch between Auto Reference of the PID loop,
or you want a manual--
and then you want a manual reference for, like,
a speed pod or some other hand-control device,
that's where you would set this, the Auto Manual Assignment.
And we go over to the Settings tab.
That's the third tab here.
You've got other additional settings here.
The ones that we're going to look at is the Proportional and the Integral Gain.
That's just how you're going to fine-tune your PID process.
So let's say that your PID is running, but the response is not to your liking.
Let's say the response is too fast or it's too slow.
This is where you would make that adjustment.
Typically, in most scenarios, you want to increase your proportion gain.
And you want to reduce your integral game.
But that's different for other applications.
So it's not necessarily going to be the same.
But that's something you just would have to play with
to get it to work in your likings.
You also have your PID Ramp.
And what that is, is your PID acceleration--
how long it'll take to ramp up or ramp down, or decelerate, acceleration.
So you would determine that time frame.
It's in units of seconds, like your acceleration on the drive.
And then here, you've got the PID Inversion.
That's just how you--
whether-- that just gives you the option to inverse your PID process.
Typically, normally and with the PID process,
you would speed up the drive to when it demands for more water,
or slow down when there's too much, and you want to bring it down.
So that's just the inverse of that.
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