Name: PIDブロックを使用した制御バルブプログラム｜DeltaV DCSチュートリアル -アドバンス (Control Valve Program using PID Block | DeltaV DCS Tutorial -Advance)
Uploaded: 2025-09-21T07:18:52.000Z
Duration: 15 min 27 s
Description: VoiceTubeの動画で発音を聞きながら英語表現を覚えよう！学べる英語：

現在進行形

In this particular video we are going to understand how to write a code to control a control wall.

このビデオでは、コントロールウォールを制御するコードの書き方を説明する。

動名詞

You can see here how to write a code to control this particular control wall by using PID in Delta V DCS.

デルタV DCSでPIDを使用して、この特殊なコントロールウォールを制御するコードの書き方をご覧ください。

to 不定詞

Before writing a control program it's important to understand control loop we have here in this example.

制御プログラムを書く前に、この例の制御ループを理解することが重要だ。

You can see that we have a water getting into this and to control the water flow you have a control wall and to measure how much is the flow you have a flow meter.

この中に水が入り、水流をコントロールするためにコントロールウォールがあり、流量を測定するために流量計があるのがわかるだろう。

Flow meter would be connected to analog input card of a Delta V DCS which is going to be then connected to the controller.

流量計はデルタV DCSのアナログ入力カードに接続され、その後コントローラに接続される。

Inside the controller you would be writing this particular PID block to control this control wall.

コントローラ内部では、このコントロールウォールを制御するために、特定のPIDブロックを記述することになる。

Very soon I would show you how to write this program.

すぐにこのプログラムの書き方をお見せしましょう。

Based on the program that you are going to be writing inside that particular controller Delta V DCS controller Delta V DCS PID output would be connected to your control wall.

Delta V DCS コントローラ Delta V DCS PID 出力は、特定のコントローラの中に書くプログラムに基づいて、コントロールウォールに接続されます。

Based on the output you would be deciding how much should be the opening or closing of the wall based on the requirement of the flow.

出力に基づき、流量の要件に基づいて壁の開閉量を決定することになる。

Before we go ahead and start working on this particular project it's important to understand few foundational concept because once I would be using that for instance you see that back calculation input there are a lot of other concepts like that which are very important to understand for you before we actually talk about the programming side.

このプロジェクトに取りかかる前に、いくつかの基本的なコンセプトを理解しておくことが重要だ。例えば、背面計算の入力を使う場合、プログラミングの話をする前に、このようなコンセプトを理解しておくことが非常に重要だ。

Concept I'm going to talk right now are very important.

これから話すコンセプトはとても重要だ。

Without that there is no possibility that you can learn PID in Delta V DCS.

それがなければ、Delta V DCSでPIDを学ぶことはできない。

You would definitely give up if in the case you are going ahead without understanding these concepts.

このようなコンセプトを理解することなく先に進むのであれば、あなたは間違いなくあきらめてしまうだろう。

Before we talk further about today's topic it's important if in the case you like these kind of videos one thing is very important.

今日のトピックについてさらに話す前に、もしあなたがこの種のビデオが好きなら、ひとつとても重要なことがある。

One favor you can give us hit the like button if in the case you haven't subscribed this YouTube channel consider subscribing turns your notification on so that you don't miss any video.

もしまだこのYouTubeチャンネルを購読していない場合は、「いいね！」ボタンを押してほしい。

So there's two ways reverse acting and direct acting.

つまり、リバース・アクティングとダイレクト・アクティングの2つの方法があるんだ。

What is this when you talk about PID loop especially in Delta V DCS?

特にデルタV DCSでPIDループというと？

When you try putting up your input high this would get down.

入力を高くしようとすると、これが下がってしまう。

If you talk about heating application that's where you have a input high like if your input if there is like too much heating already then what you need to do you have to control the heating like you have to you have to get your output low right.

もし、暖房のアプリケーションについて話すなら、入力が高い場合、つまり、すでに暖房が多すぎる場合、暖房をコントロールする必要がある。

If there is too much heating your heater need to be get you need to get low right but when you talk about cooling application which is when you have too much heat you should have a too much cooling app you don't need to be introduced like for example there is too much warm you would put up your your AC on more high.

暖房が効きすぎている場合は、暖房器具の温度を低くする必要があるが、冷房の場合は、暖房が効きすぎている場合は、冷房器具の温度を低くする必要があり、例えば、暖房が効きすぎている場合は、冷房器具の温度を高くする必要がある。

So this guy need introduction that is in a PLC or PID terms or control terms especially in PID this is called reverse acting and this guy is called direct acting.

PLCやPIDの用語や制御用語、特にPIDでは逆作動と呼ばれ、こいつは直動と呼ばれる。

So reverse acting is when input is getting up output will get to get low and when in a direct acting when input is high output is high okay.

つまり、逆作用とは、入力が高くなると出力が低くなり、直接作用とは、入力が高くなると出力が高くなるということだ。

これでバンプレス移籍が実現したわけだ。

What is mean of what is the meaning of bumpless transfer because if you don't if you're not clear about the things that exist in you know like if you talk about PID tuning there are few things that need to be like a PID block few things that need clear introduction.

PIDチューニングについて話す場合、PIDブロックのように明確な導入が必要なものがいくつかあります。

So I'm just summarizing that information what is needed there's nothing on this whole slide setup and you are aware that even in the whole training there was not a single thing which was not in use which I discussed on this training.

ですから、必要な情報をまとめただけです。このスライド全体には何も書かれていませんし、トレーニング全体でも、このトレーニングでお話ししたような使用されていないものは一つもなかったことはご存じでしょう。

So this is same here so that when you talk about the bumpless transfer the term bumpless transfer referred to the process being controlled meaning that process is not disturbed when switching the PID from auto to manual like there is the auto auto is just by PID and manual is by operator.

PIDをオートからマニュアルに切り替えたとき、オートではPIDが、マニュアルではオペレーターが操作するように、プロセスが乱されないことを意味します。

So when you actually put auto to manual normally you know your control loop deviate too much.

だから、実際にオートマチックからマニュアルに切り替えると、コントロールループが大きく逸脱していることがわかる。

To take care about that we call it a bumpless transfer that is a process that when you take care about switching of auto to manual or manual to auto and you make it smooth okay.

オートからマニュアル、マニュアルからオートへの切り替えをスムーズに行うために、私たちはバンプレス移籍と呼んでいる。

The most modern PID controllers have built-in bumpless transfer.

最新のPIDコントローラーには、バンプレス転送が組み込まれている。

This is very very important thing there's a back calculation output and there is a BK calculation in output there's an output and in okay.

これは非常に重要なことで、出力には裏計算があり、出力にはBK計算がある。

So that need to be connected back calculation out would be connected to back calculation in we would see in a PID block when I would be doing an exercise right in front of you back calculation out would be connected to back calculation in and why we need to connect it that's for bumpless transfer and then to prevent a reset windup.

つまり、バック・コンピューティング・アウトはバック・コンピューティング・インに接続する必要があるわけです。PIDブロックの中で、皆さんの目の前で練習をしているときに、バック・コンピューティング・アウトはバック・コンピューティング・インに接続されているのを見ましたが、なぜ接続する必要があるかというと、バンプレス転送のためと、リセットの巻き上がりを防ぐためです。

Now you would say what is a reset windup?

では、リセットされたワインドアップとは何なのか？

Reset windup or windup is a long-standing problem with PID control and it has been solved in a different ways over the time on different system but when you talk about there's a too much deviation between set point and PV and that is pre-longing like your controller is not able to get in your PV close to set point that's what we call it reset windup.

リセットワインドアップやワインドアップは、PID制御の長年の問題であり、様々なシステムで様々な方法で解決されてきました。しかし、設定点とPVの間に大きな乖離があり、コントローラーがPVを設定点に近づけることができないようなプリロングが発生することを、我々はリセットワインドアップと呼んでいます。

So that mean like for a long time your problem exists the error is still there and it's not able to your your output is getting up but it's not able to actually meet your requirement that's what we call it reset windup.

つまり、長い間、問題が存在し、エラーが発生したままで、出力は上がっているが、実際に要求を満たすことができない。

To avoid that just keep in your mind that back calculation in would be connected to sorry back calculation output would be connected to back calculation in you would see when you would be doing the PID implementation that's a feedback in short terms you can say how much is your output that would be fed into the block again as an input any questions?

それを避けるために、バック・コンピューティング・インがバック・コンピューティング・アウトプットに接続されることを覚えておいてください。

Okay first of all we need to have a analog input okay and we would put analog output in advanced control you would see this PID you are going to put it first thing you would do you would collect connect that input to output of that simulate in to input of the PID and then output of this guy would need to be connected here cascade in.

まず最初に、アナログ入力が必要で、アナログ出力をアドバンスド・コントロールに追加する。

Now you see this back calculation out what I was talking about so this back calculation out need to be connected to back calculation in okay so we have a connection from here to this guy to make it look better you can do like this okay so this out is connected here and this out is to in back calculation in to white your reset wind up and bumpless transfer concept which we actually talked about before so a very important thing now which we really need to understand is there are few things that you have to have here which are not actually there so how to get up something in a PID which never which is not existed even you can see there's no set point here so you have to click right show parameter browse first first of all you have to understand I want this parameter to appear at the input side of the PID block so I selected type as input get into the browse now you have to search for set point so this set point is right here just click okay and click okay now you would see the set point is there also right now let's edit there are few things that you have to actually take care when you are going to make a PID loop so that is control options so when you click on this here you can actually make reverse or direct acting by default when you haven't selected anything this is reverse acting but when you are trying to you know it as a direct acting then you can do it like this you understand the point so I click on direct acting and click okay now this guy is ready okay so good now we can give a set point some value where is the set point set point is here I want my PID to be at 89 and where is the set point is good good cascade okay then I want this guy to be at some value right I don't want this to be set point I need to give it some value here to simulate in also so I will enable it I would give it 80 value okay so this is now 80 value and this set point is termed as your how much was how much was the value for the set point 89 okay now if we give it a 10 value for instance this AI that would behave in a better way I think let me instead of getting a high value we can give it a same 60 50 value that's a better way now you can see there are many options that exist if you come here into this block you can also see there are many options but first of all we have to understand see the gain is there there is a PIND rate is there that is there and you have a reset and you have a gain also and you have a outscale that you have actually scaled a value that your output would be between 0 to 100 it would not exceed more than that I'm sure that my process value or my control wall is between 0 to 100 percent there is no more actually opening of the control wall more than 100 percent then in that case you can see you can put up a zero limit for a low limit and high limit would be adjusted to 100 you can see here right any questions it's okay this this is your high limit in similar way you can also give a low limit in high limit to input values also but yeah this is a set point and one important thing with more thing yeah you can see the mode option here it's in the manual you can put it auto you can put it manual here you can put it cascade you can get put cascade remote and remote output but we would be talking about auto and manual in this case so I put it in manual and I'm trying to give a value and I need to save this program I need to download it and then see what is the response upload to the download to the station you can first upload it select okay and it's going to upload and then download anyway okay so now you see you put up a value of 50 and your set point is 89 as 79 and you're trying to give the output value to some value let's see and I want to give this output some value so I'm trying to give out manually so I'm trying this to be 30 okay so I put this output manually 30 value now I'm going to change the mode of operation to automatic to see how it operate so I select mode and make it into auto and click so now we have to tweak with the PID terms to see the response so if you see that we have a gain here so I want my gain to be high so what I where is the gain best way is put here and just select some give some value and I give it one to see the response now see the value is changing when I give a gain gain value you see the value of feedback is also changing and that back calculation is getting back to here also you see that's what I was talking about the feedback is going to be fed in in the back calculation now system is trying to reach to that value this is a set point 89 and your value is 50 okay so the system is trying to maintain that value if you try giving a value for example 675 see the response is changing so based on what you have at the AI which is your input your output would regulate the flow so this output would be actually connected to control valve and this AI is connected to the temperature transmitter in the case what we were actually talking about that's all for today if in the case you like this video consider hitting the like button if in the you haven't subscribed this youtube channel consider subscribing until next video take care and Allah Hafiz

このバック・コンピューティング・アウトはバック・コンピューティング・インに接続する必要がある。リセット巻き上げとバンプレス転送のコンセプトは、以前にもお話ししました。このパラメータをPIDブロックの入力側に表示させたいので、入力としてタイプを選択し、ブラウズに入って、セットポイントを検索しなければならない。PIDループを作ろうとするとき、いくつか注意しなければならないことがあります。しかし、直動作にしようとする場合は、このようにすることができます。直動作をクリックして、OKをクリックします。セットポイント