What is a PID Controller?

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Today you will learn about PIDs. Specifically, what they are and when do we use them with automation and PLCs.
PID is an acronym that stands for Proportional, Integral, Derivative.
It can keep an automated process like temperature, pressure, or flow constant for you automatically.
PIDs use a control loop feedback or process variable to monitor where the output should be.
These usually come in the form of sensors and meters.
PIDs come in many different forms including standalone units and PLC programming.
We can use our input and output cards along with programming software to set up a PID.
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[@realpars]

Want to learn about industrial automation? Go here: www.realpars.com/individual-pricing Want to train your team in industrial automation? Go here: www.realpars.com/pricing-team

[@electrichorror6642]

The absolute fundamental is: Multiply the gain, integrate the error, take the derivative of the error feed it back into the process until the desired setpoint is achived. The values of integral, proportional and Derivative are all constants you wish to use for the error. P(E +i( INTEGRAL) (DE) + (DE/DT)d) in the time domain, of course s domain makes it easier to solve however for most basic workings this is already provided.

[@realpars]

Thanks for sharing!

[@maximilianstucke1992]

Good info, but you sadly did not go into the details how the controller works exactly. The proportional part, integrator and derivator essentially help with uptake speed and improve smoothness and responsiveness. Imagine you set your cruise control to 150 km/h. You don't want your car to rev up and down, varying around the intended speed. The integrator helps to keep the control signal smooth. The derivator senses changes over time, hence the name, and can therefore increase the reaction speed to changes in the sensor signal. The proportional part ensures a fast uptake to the desired setting. Hence your car will accelerate quite fast until it reaches the set speed and remain there at a smooth fashion, being able to react to any changes in speed. The great thing about PIDs is, that you can set all these properties separately, having utmost control about the controller behavior.

[@realpars]

Hi Maximilian, Thanks for adding that! That's great additional information, many thanks for sharing that.

[@jollyscaria1922]

Thankyou shring gues welcome

[@jeremymcdonald5281]

Sadly you used the same old tired cruise control comparison that we have all heard in lecture for electronics and instrumentation or calc 1. . . Try again? With a more original response to attempting to correct someone? Or just continue regurgitating your professorsworn out text book example?

[@muhammadatif1696]

please! continue with the PID series

[@NomadUrpagi]

You are an exceptional channel in your quality of visual, logical and verbal presentation. Also, kudos for giving to everyone this knowledge for free. The world is ours all we have to do is grasp it.

[@realpars]

Thanks for that amazing compliment! We are happy to hear that.

[@holdurhorse9149]

What happened?

[@NomadUrpagi]

@@holdurhorse9149 what happened with what

[@sultanalmahdaly837]

I like how this PID is presented . It comes on very handy thank you.

[@realpars]

Glad it was helpful, Sultan!

[@adekolasulaiman2549]

A big thank you to all the brain behind Realpars.

[@realpars]

You're more than welcome! Thanks for your support, we truly appreciate that!

[@DevD1111]

Thanks Realpars. Most awaited video. Please keep continue the PID series.

[@realpars]

Great to hear! We will surely do! Happy learning.

[@mehmettummu283]

Clearly and scientifically explanations. Thank you!

[@realpars]

Glad it was helpful! Thanks for your comment, Mehmet.

[@johnbarron4265]

This heated pipe control system is a relay controller, not PID. Relay is used when the control input is either on or off, as in a furnace for heating a house. Usually temperature control is a first-order system, with temperature being the only state, and its rate of change is proportional to a temperature differential between the heated space and the surroundings. Relay works well in this case, since the temperature of the heated space will start falling the instant the furnace is turned off, and it can be turned back on when the temperature reaches the lower setpoint. Relay controllers are the simplest kind of controller to implement; however, they are not suited to every dynamic system. Consider for example a servomotor that must swivel a robot arm from one station to another station. A relay controller would say, turn on the motor and turn it off when the arm reaches the other station. With the motor being on the whole time, the arm would acquire some angular velocity by the time it reached the other station. The task is not done though, as the arm is in motion and will overshoot the station. The motor has to reverse direction to send the arm back toward the station. This overshoot will repeat itself, leading to an unstable oscillating robot arm. This is where PD controllers come in. The P, or proportional term is the portion of the control effort due to the deviation in the actual state from the desired state. The D, or derivative term, provides damping by offsetting the control effort (servomotor applied voltage) by an amount proportional to the time rate of the state to be controlled. In the robot arm example, the initial control input from PD is relatively large due to the deviation in angular position from the desired station. As the arm picks up speed toward its destination, the proportional control term decreases due to the decreasing deviation in position, and the derivative control term, acting against the proportional term, increases. At some point before the arm reaches the destination, the derivative control term will overtake the proportional control term, at which point the motor voltage will reverse polarity, sending a slowing torque to the robot arm to slow it down to a much more manageable speed by the time it reaches the station. In this case the robot arm may overshoot the station by a little, or if the control gains are properly tuned, there will be no overshoot at all. When the desired state is a constant, PD will always send the system exactly to the desired point. However, if the desired output is a function of time, such as a ramp, or sinusoid, then there will be some steady-state lag behind the reference signal. This error can be reduced by introducing the integral, or I term to produce a full-fledged PID controller. This I term integrates the error term over time and incorporates the total error accumulation in the control input.

[@OrhaninAnnesi]

gets on my nerves when a basic "bang-bang" controller is introduced as a PID. Great explanation btw, keep up the good work!

[@realpars]

Hi there, Thank you very much for your detailed and well-explained example. Yes, you are somehow right about the Heat Tracing example and it could be an ON/OFF control loop as it is shown in the video as well. Although using a Proportional control, the behavior of the heat tracing is the same as it is shown. On the other hand, the purpose was to show a simple application and principle operation of the "PID Controllers". And as per your explanations, it is mostly used for temperature controlling of the variety of processes either by means of solid-state relays or P, I and D settings. This video was an introduction to PID Controllers and in the next video in this series which is about the PID loop and its corresponding Function Block in Allen Bradley ControlLogix PLCs, we will elaborate on the P, PD, PI, and PID loops concepts using one or two simple real-world examples.

[@johnbarron4265]

@Flávio Cozi You're correct this video does not detail the workings of PID control. PID control is one of many different control laws that can be implemented in a system. A control law is a set of instructions that determines what control input is needed in the system based on the state errors of the system. In the example of heating a building, the state that we want to control is the temperature of the space. Suppose a gas furnace is used to supply heated air through a duct to a single floor of the building. The control input is the rate of heat addition to the air as it flows through the furnace. Normally a furnace is either adding heat at a constant rate (constant burn rate of the fuel, natural gas), or it is turned off and produces no heat. However, if you wanted to implement a PID controller for building heating, then your furnace's heat setting would have to be continuously adjustable. This could be accomplished by actuating the valve through which the natural gas flows. We want to control temperature of the space, which is measured by a thermometer, thermocouple, or other temperature sensor located at a point in the building at which the temperature is representative of the temperature throughout the space. The error signal is the deviation in sensor temperature from thermostat-set temperature. Provided that we have sufficient computing power available to the temperature controller, then we can also calculate the time derivative of the error signal (ie how fast is the temperature deviation changing?), and the the time integral of the error signal (ie the history of how large a temperature deviation has existed in our building, and for how long?) The calculated temperature deviation is one of the three pieces of information that is required by PID control. The error signal is multiplied by the proportional gain, which has units of kilowatts of heat addition per degree Celsius. For example, if we tune our PID controller such that the proportional gain is 1 kilowatt of heat addition per degree Celsius of temperature deviation, then if our building is measured at 19 degrees C, and we set our thermostat to 21 degrees C, then the proportional (P) term of the PID controller will call for 2 kilowatts of heat addition by the furnace. However, what happens when temperature is measured to be equal to the thermostat setting? The proportional control term goes to zero. Without the integral or derivative control terms, the controller would call for zero heat addition, and the furnace would shut off. Physics tells us that without heat addition, the temperature inside our building will start to drop, due to heat transfer through the walls to the outdoor air which is cooler than indoor air. Therefore, a stable steady-state temperature cannot be maintained using the P term alone. The integral (I) term can be used to provide a steady state heat addition to maintain the temperature of the building when it reaches the desired point. The integral term has units of kilowatts of heat addition per degree Celsius per second. Now, for every second the temperature of the space is below the desired point, the integral of the error signal increases, and the integral is multiplied by the integral gain to obtain the integral control term. For example, suppose we tune the integral gain to 50 watts per degree Celsius second. Suppose the temperature of the building is on average 19.5 degrees C in the first minute the furnace is on, 20 C the second minute, and 20.5 C the third minute the furnace is on. Then assuming our thermostat setting remained at 21 C, the integral of the error signal is 60*1.5+60*1+60*0.5=-180 degree Celsius seconds. Multiplying this value by our integral gain, we obtain the integral control term, 9 kilowatts. Now suppose in the fourth minute, our building has reached a temperature of 21 C. The proportional control term becomes zero, but the integral term is nonzero, and it equals 9 kilowatts of heat addition. If this is the rate that our building rejects heat to the outdoors when the interior is at 21 C, then the integral control term will ask the furnace to produce just enough heat to maintain our building at a steady temperature. However, if the integral gain were set to a value too large, then the controller will ask the furnace for too much heat, and the temperature will overshoot 21 C. Thankfully, the moment it overshoots, the error signal reverses sign, thus the integral of the error signal begins to decrease, which decreases the integral control term. Also, the proportional control term reverses sign, so the heat addition from the furnace will decrease to allow the space to cool down. Finally, the derivative of the error signal is used in the derivative (D) control term. The derivative could be calculated by a simple finite difference approximation (ie current temp deviation minus previous temp deviation divided by elapsed time between measurements), and this derivative is multiplied by the derivative gain. The derivative control term is really not necessary for a temperature controller, since thermal systems are best modeled as first order systems, and the rate of change of temperature is not a state of the system we need to concern ourselves with. Nonetheless, we can still incorporate the derivative term. For example, suppose we set the derivative gain to 10 kilowatts per (degree Celsius per second). The error signal changed from 1.5 C to 1 C from the first minute to the second. This is a change of -0.5 C occurring in 60 seconds, so the error signal rate is -0.00833 Celsius/second. The derivative control term is then -83.3 watts. This means the derivative term works to negate the control effort by reducing how much heat the controller demands from the furnace. The derivative control term worsens the performance of our temperature controller since it impedes the control effort when there is no need to. However, in systems where the derivative of the state to be controlled is a state itself with its own dynamics, then the derivative term becomes useful. This usually is the case of systems involving rotational or linear motion control, where both position and velocity are states, and the system becomes second-order.

[@fenrrierodin]

@John Barron.Thanks! From your explanation, I recall some memory of the Automatic Control Theory when I am still in College. Because I am a beginner of PLC relevant field. I think that I need to study the book again. Or you have anything better suggestion and something resource like open courses, video, documents ...etc. Thanks.

[@aaposour3305]

John Barron 👍

[@redlamb4934]

Hi , my request is to.you to make more videos on This topic , your channel is very easy to understand .

[@sumangalauppaladinni8813]

I can watch thousands of videos like this. Informative and fun to watch.

[@realpars]

Glad to hear that, Sumangala! Thanks for sharing.

[@1982rsasi]

Hi realpars ....thank you very much for your videos....I want to change the field ...for that everyday I am learning new things from your videos....

[@realpars]

You are very welcome, Sasi! Happy to hear that you are enjoying our course videos! Have you had a chance to check out our free course on PLC Hardware? bit.ly/2XnnUrF

[@mitengr7680]

Thank you for the simple but helpful explanation.

[@realpars]

You're welcome! Glad to hear that it has been helpful. Always feel free to reach out if anything is unclear - we're more than happy to help!

[@harshwardhanbhosale34]

Great video, Cleared my concept related to PID.

[@realpars]

Thanks for your positive feedback! Happy learning.

[@stijnmartens9952]

Best explanation! Thanks

[@realpars]

Great to hear that, Stijn! Thanks a lot for your support. Happy learning!

[@sandeep1423]

Very useful explaination instantly for me💓💓

[@realpars]

Great to hear that! Happy learning.

[@koreyfovel6041]

That was a great explanation

[@realpars]

Thank you!

[@UgandaBasement]

THANKS BRO NEEDED THIS !

[@realpars]

Glad to hear that! Happy learning

[@user-gm3gh5zb6z]

Thanks for your video

[@z-learn9682]

Simple and clear. Thank you.

[@realpars]

You're welcome!

[@nanajerry824]

DR RORPOPOR HERBAL on KZbin changed my entire life with his herbal medicine. I appreciate you sir, for taken away my PID

[@RakeshKumar-sx8zm]

Thanks for your valuable video.... It's much useful. I have searched on internet......but you have explained PID very well

[@realpars]

Great to hear that - thanks for sharing, Rakesh!

[@andrewaronson3364]

I am honking as a courtesy my friend

[@andrewaronson3364]

samir, I beg you

[@smohammed7094]

During PID adjustment on PLC referring to curve of setting, proportional adjusted to get off not large unstable then value must be multiplied by 1/2 to get the actual value stable on set point. then integral (time) must be adjusted until it become constant with set point lastly will be derivative as it stand to minimise overshoot in case controller is on action such as temp, pressure or flow.

[@realpars]

Thanks for sharing that, Mohammed!

[@sudhirgayakwad6766]

Good information in a short video. Great!

[@realpars]

Glad you enjoyed it!

[@mdmuntasiralam774]

Excellent video and very nice explanation! Thank you very much.

[@realpars]

Glad you enjoyed it! Thank you very much for sharing

[@pavunumuthu9510]

Thank you for video in pid control understand clear.

[@realpars]

You're very welcome, Pavunu!

[@lct9031]

Hi real pars... with todays vfds that have PID control in it, would it be possible to connect the analogue output of the 1st drive to the analogue input of the second drive without using PID controllers? i would like to control the speed of the 2nd drive according to the amps of the 1st drive... the higher the amps the lower the speed and vice versa

[@uditsaxena3844]

thank you so much i learned alot

[@realpars]

You're more than welcome!

[@saraali-kx2mo]

Very nice video! Easy to follow.

[@realpars]

Glad it was helpful!

[@maruthanilam2448]

Thank you sir.

[@realpars]

You are very welcome, Marutha!

[@renegadeflower575]

I was sceptical when I signed up to www.realpars.com but its exceeded my expectations. I've had experiences with going on courses and struggled to grasp has been thought but realpars ticks all the boxes for me.

[@realpars]

Great to hear! Thanks for your constant support! We all really appreciate it. Happy to hear that you are benefiting so much from our courses. Keep it up ;).

[@jairohernandez1715]

Thank you it was clear.

[@realpars]

Glad it was helpful!

[@mohdazaz3860]

Thanks great explanation

[@realpars]

Thank you, Mohd!

[@InstrumentCalibration]

It is a great example Thanks for sharing

[@realpars]

Glad you liked it!

[@shermuhammad713]

thanks

[@iran_siemens]

hi dear realpars it s very good video for pid ctrl. thanks

[@realpars]

Thank you!

[@rheinn216]

More PID Pleaseee....!!!

[@realpars]

Thank you! I will pass your request on to our creator team. Happy learning!

[@jorgedaza4799]

Thanks!

[@realpars]

You're very welcome!

[@basirasir4848]

Great ...Clean Explanation

[@realpars]

Hi Basir, Great to hear that, thanks for your support!

[@RamakrishnaKorukonda]

Expecting something on FeedForward control loop system

[@realpars]

Hey! Thanks for the tip. I will pass your topic request on to our creator team.

[@electrichorror6642]

Feedforward generaly used if you know what the model of the disturbance is. By feeding this model back into the process and subteacting it feedforward is effective. HOWEVER! Feedforward is not effective if you do not know the characteristics of the disturbance variable. I would recommend for most processes you use cascade and make the internal loop as fast as you can to get the process to setpoint as fast as possible. Then tune the outer controller to achieve the final desired response

[@kalebmaxwell2640]

Thank you bro

[@realpars]

You are very welcome, Kaleb!

[@arun4846]

Thanks ❤️❤️❤️👍👍👍

[@aleemsafdar2120]

I Love Your videos..!

[@realpars]

Great to hear that!

[@phuciendj1572]

I love this channel.

[@ministeriomundialliberando8403]

Very clear and valuable explanation about PID. Thank you very much.

[@realpars]

You're more than welcome! Happy learning

[@sanvikasri.r2213]

Thanks

[@thirumalai6697]

Really helpful subject

[@realpars]

Great to hear! Thanks a lot.

[@johnsawyer2516]

Not PID control it is on of. The reason for using PID is to keep the process variable at the set point, not bouncing around it. If the system as described in the video was used to control the flow of a liquid large pipe the resulting hydraulic hammering would destroy the pumps/valves and pipe work.

[@iran_siemens]

But in the case of heat, it can be used

[@enricopoire9491]

Yes, but you have to call it ON/OFF control, not PID control.

[@gmustsgman7113]

Enrico Poiré English pls

[@MaNemUmar]

From an observer’s viewpoint, the setpoint is adhered to. From a process variable’s viewpoint, a bouncing effect is characteristic of a badly tuned system and is still very much a classical example of PID control. The on/off approach is utilized because many PID FBs in essence control an analogue output via a dynamically altered duty cycle( dependent on P,I,D and multiple application specific parameters).

[@mastercad7260]

Nice presentation,Thank you very much

[@realpars]

Glad you liked it!

[@moysinshekh8224]

Very good explanation sir

[@realpars]

Thanks a lot!

[@oktaytekin4560]

Thank you very much.The lesson is been very good and usefull.l will following you.(in İstanbul)

[@realpars]

Glad to hear that, Oktay! Happy learning.

[@judegullo1869]

i love this video

[@mohamadalikardi73]

thanks for you

[@realpars]

You are welcome!

[@uditsaxena3844]

Thanks sir super clear

[@realpars]

You're most welcome!

[@sjsu2024]

great video & information

[@realpars]

Glad it was helpful!

[@use50152]

it's very useful video thanks

[@realpars]

You are very welcome!

[@pcrb2695]

You people are doing really great job by sharing knowledge to the external world, i really would like to appreciate that, can you please share us you knowledge on how to tune PID logic in RS Logix software and in SIEMENS SIMATIC softwares by using a Practical industrial example like reactor temperature something like that in a layman language inorder to understand it better. this PID topic always rocket science for me. Kindly explain it in simple and basic terms in easy understandable way . Expecting More practical and calculations with real time examples. How the theoritical formula to be applied practiacally and all

[@realpars]

Hey Hara! Thanks for your kind comment and your suggestion. I will pass this on to our course developers! Thanks for sharing and happy learning!

[@jaikishank]

Thanks for the very concise explanation. Is there any video to explain the individual maths behind all the three types of controllers?

[@realpars]

Hi Jaikishan, Thanks for your comment! Not yet, but I will happily pass this on as a topic suggestion to our course developers. Thanks for sharing and happy learning!

[@nanajerry824]

DR RORPOPOR HERBAL on KZbin changed my entire life with his herbal medicine. I appreciate you sir, for taken away my PID

[@kirubafromuk3433]

Very useful video, Thanks for sharing

[@realpars]

Our pleasure!

[@kandasamyrajesh811]

Your videos are nice and easy to understand And also please publish a video on vlt drives

[@realpars]

Great! Thanks for your support.

[@tiddassiismail4303]

Thanks from morocco

[@realpars]

You are very welcome, Ismail!

[@erkanagdas6414]

You are the best.

[@realpars]

Thanks a lot, Erkan!

[@laithjawad9208]

Thanks; please could prepare video for cascade PID

[@realpars]

Hi Laith, Thanks for your comment and your suggestion. I will pass this on to our course developers! Thanks for sharing and happy learning!

[@JF17thunder485]

Awesome video

[@realpars]

Glad you enjoyed it!

[@davidyoungson9162]

Excellent video very informative

[@realpars]

Glad you think so!

[@haryomukarnadi3282]

Nice explanation👍. Are there video/explanation for how to put the PID control (program) inside into the PLC?

[@realpars]

Hi Haryo, Thanks for your comment! We have a course on PID controller, feel free to check it out through the following link learn.realpars.com/search?q=PID+Controller Happy learning!

[@ndrh2878]

did you have any books or Docs make to understand and to learn more about PID Controller i will be thankful to you guyz !!! ...and thank you for Vds

[@dabulls1g]

Go study control theory / control systems!

[@510vishnu]

Here you have explained only about 'On Off control system'.The topic PID control system is something moreover that you explained.I think you can do more,Thank you...

[@realpars]

Thanks for the feedback, Vishnu!

[@ahmedalowmari3070]

Great awesome thank you

[@realpars]

You're very welcome, Ahmed!

[@kushchaudhary0015]

Sir, please also add a video related to Positioner, that how it works and application

[@realpars]

Hi Kush, Thanks for sharing your suggestion with us! I have sent this over to our course developers. Happy learning!

[@Pavldar86]

good entry-level video

[@realpars]

Thank you!

[@koushikdatta5130]

awesome video..keep it up..bdw whats the software being used for animation?

[@realpars]

Thank you! We are using Adobe Premiere for our animation.

[@IK-qu9hw]

Good video

[@realpars]

Thank you!

[@psulife315]

How to control the dc motor position control by using PID controller please upload the video releated to this

[@realpars]

Thanks for the topic suggestion, Vijay! I will definitely go ahead and forward this to our creator team. Happy learning!

[@petersamodhar9527]

Thank you for reply please make a video on basic pid adjustment on diesel generator thank you

[@realpars]

Hi Peter, Thanks for sharing your suggestion with us! I have sent this over to our course developers. Happy learning!

[@petersamodhar9527]

@@realpars Hartley thanks I pray for good health

[@AMANDEEPSINGH-hl7rp]

Great....

[@realpars]

Thankyou!

[@petersamodhar9527]

I'm working on Cummins generator pl explain very basic level how to adjust governor with p I d controller i need it seriously thank you god bless you

[@realpars]

Great to hear that, Peter! Great job!

[@smailkhelil1857]

Normally you explained when you use P to get rapidity in the response and effective value follows the set point but with only proportional P the system can't reach the set point that's we need to add Integral I to resolve this matter and to avoid the oscillations of the effective value Ev we add derivator controller and we increase the stability

[@MohammedAdelSuleiman]

Questions : what is PV and SV stands for ? and this PLC is S7 300 Compact ?

[@RanaMuhammadAwais]

Pv is present value Sv is set value It is modular plc

[@khanswaleh5]

@@RanaMuhammadAwais PV can also be called as Measured value

[@cakemaster10]

So what difference did it make to use a PLC to control the PID? Does the PLC determine the P, I and D constants automatically? Does the PLC allow for the P, I and D constants to be modified directly, which they can't be for a PID for some reason?

[@realpars]

The PID instruction in the PLC executes the equations that use the tuning constants along with the SP and PV to calculate a new output on a periodic basis. The P, I, and D tuning parameters can be constants, which can be changed online through the programming software. They can also be variables, and be calculated or updated by the program, or entered by the programmer or operator through the HMI or programming software. Only when the PID instruction is being used in "self-tuning" mode can the block itself update the PID tuning parameters. In self-tuning mode, the programmer or operator may be prohibited from updating the values of the constants, depending on the CPU model used.

[@bazpuriyaautomationcontrol9442]

Very nice

[@realpars]

Thank you!

[@dhilipkumardhilipkumar403]

It's really very nice, could you elaborate this PID concept with deep analaysis such as how to set gain values, PID values in a closed loop control..?

[@realpars]

Thanks for your positive feedback! Happy to hear that. I have passed your topic request on to our creator team.

[@modiutsav5740]

Pls make videos on PID control in L & T vfd cx2000 or its parameters Explanation.

[@realpars]

Hey Modi! Thanks for your comment and your suggestion. I will pass this on to our course developers! Thanks for sharing and happy learning!

[@SyedHamedinstrumentation]

Well explained can you please give video for any honey well or yokogawa pid control how to set ans connect it

[@realpars]

Thanks for your topic suggestion! I will happily pass this on to our course developers.

[@vikaspathak9230]

Can you share the video on moisture sensor?

[@realpars]

Hi Vikas! Thanks for your comment and your suggestion. I will pass this on to our course developers! Thanks for sharing and happy learning!

[@CentrodaAutomacao4.0-js6xy]

In which program do you make your videos?

[@realpars]

Hi there, we use Adobe Premiere for our video animations.

[@CentrodaAutomacao4.0-js6xy]

Thanks for the reply, I tried to do it on various platforms, but without success! You guys do a great job! Hugs, I'm from Brazil.

[@gsk7767]

Hey Guys could u elaborate the pid topic how will be the output tunning based on parameters p,i, & d

[@sjholmesbrown]

This video gives a more in-depth look at how P/I/D each affect the control loop. kzbin.info/www/bejne/jIeymmWal9mreZI

[@K24_ej1]

I have a quick question regarding PID controllers. So I was in discussion with the guys at work today... A situation happened where we tripped a breaker due having two ovens going at once. We calibrate gps equipment for directional drilling so we see temperatures up to 170C. Now, this occurred when both ovens were ramping to 150C from 25C. My question is, with controllers like this does the amount of Voltage increase when choosing a higher temperature on the controller, or does the controller send out the same amount of power regardless of temperature chosen. We utilize the Omega CN76000 controllers in our oven. I was under the impression that the voltage would be greater going to 150C from 25C compared to going from 25C to 75C. Just curious. Thanks!

[@realpars]

The actual heating elements for the ovens could be of several types. If it is an SCR-type, then the full line voltage is electronically switched at a rate to give an average current output to allow the heater to move to the setpoint temperature. An SCR is a heavy duty switch that operates based on a controller setpoint input, such as that provided by your Omega CN76000 controller. For other types of resistive heaters, varying the average current draw in other ways is probably the method of temperature control. Tripping a breaker occurs most likely due to over-current, indicating your incoming electrical feed may be undersized. If both ovens are on the same electrical feed, I would separate them and protect each with a separate breaker to keep one heater from taking both down.

[@chandraashutosh2500]

Why there is offset in proportional controller?

[@Bozojimmy]

to compensate for response time

[@logeshlee1847]

i want say some well deserved yters drop the channel due to no views but we can't blame them in 2019 actors makes more than engineer s but man if ever read my comment keep ur work and upload atleast 2mnth once ,a movie is onetime but knowledge is something incomparable

[@realpars]

Hi Logesh, thanks a lot for your support! We are always extremely happy to hear such positive feedback! If you ever have any questions, feel free to reach out to us. Happy learning!

[@lyen2801]

赞👍

[@rayassine4053]

You are amazing 😘😘😘😘😘😘

[@realpars]

Thank you so much!

[@unclealig]

well explained. is there something special i have to set on my PID controller like cycle times or hysteresis, when using zero crossing SSR's to switch a heater? thanks

[@realpars]

Nothing special needs to be done. I would not tune the controller to be very "fast or aggressive", since the temperature response is typically slow.

[@unclealig]

@@realpars thanks. Whats the parameter to be used to not behave aggressivley

[@ADR003]

Could you do a video on Most-Open-Valve (MOV) control logic?

[@realpars]

Thanks for the suggestion, Allen! I will send this through to our creator team.

[@ADR003]

@@realpars Thank you

[@zaryabqureshi45]

Kindly upload a video on profinet communication system. How does it works?

[@realpars]

Hey Zaryab! Thanks for your comment and your suggestion. I will pass this on to our course developers! Thanks for sharing and happy learning!

[@talhagondal4215]

I need detailed video on MPC controller

[@realpars]

Thanks for your topic suggestion, Talha. I will pass it on to our creator team. Happy learning!

[@steliosstylianou1793]

Exelent videos

[@realpars]

Thanks a lot, Stelios!

[@Nidhin89]

Can you do a video on foundation fieldbus please?Thank you!

[@realpars]

Hi there, thanks for the suggestion! I will pass your request on to our creator team.

[@Nidhin89]

@@realpars Thank you so much!

[@MukeshKumar-ee9ms]

please make a video elevators programming in plc (ladder)

[@renegadeflower575]

Please subscribe to www.realpars.com and you will find them.

[@mostafazaki6312]

what are the kind of voltage regulator can i used ??? can you help me

[@realpars]

For the heat tracing example shown in the video, a power supply/voltage regulator is used to provide power to a resistive heat tracing cable that provides a uniform heat output over the entire length of the cable. Manufacturers of heat tracing supply these power regulators that are matched to the specific heat tracing cables that they provide. This insures safe operation and reduces the likelihood of overheating or damage to the electrical circuit.