PLC Digital Output Types | Solid State vs Relay

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RealPars

RealPars

Күн бұрын

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@renegadeflower575
@renegadeflower575 3 жыл бұрын
With Realpars, you always learn something new.
@realpars
@realpars 3 жыл бұрын
That's the goal! :)
@knkovja
@knkovja 3 жыл бұрын
Last year i got my bachelor's in mechatronics, robotics and automation. Currently, I am on my master's studies and working in company which main job is industrial automation and machine vision using PLC/Vision System/HMI..etc. Can't thank you enough for the amount of this quality content.
@realpars
@realpars 3 жыл бұрын
What an amazing compliment! Thank you, Nikola. Best of luck on your masters, if you have any questions always feel free to contact us.
@crane9476
@crane9476 2 жыл бұрын
Vaughn College In NYC Has Mechatronics Too. How Do You Like The Field?
@natriumguy8537
@natriumguy8537 3 жыл бұрын
What an amazing video! I am an experienced PLC Programmer but such kind of videos help me develop better understanding of things.
@realpars
@realpars 3 жыл бұрын
Glad to hear that, happy learning!
@ardentdfender4116
@ardentdfender4116 3 жыл бұрын
This was very helpful and a learned a bit. I remember on a huge project for a PLC Upgrade at a Power Plant in the South West about a year ago we used some new type Relays. I'd never seen them before and was like maybe a dozen installed. They were from Rockwell and looked like what is Transistors with LED Lights. At first, I had no idea what they were, but my senior said they were Relays. I said Ok and that was it. It now dawned on me they were like Solid State Transistor Relays, I just never knew. Good Stuff RealPars!
@realpars
@realpars 3 жыл бұрын
Thanks for sharing that, Ardent! Glad to hear that it was helpful
@munster1404
@munster1404 3 жыл бұрын
Old school relays are still pretty dominant at the last plant I worked at.
@ProfesionalRenacido
@ProfesionalRenacido 3 жыл бұрын
Was s great video! This information will be very useful in my job!
@realpars
@realpars 3 жыл бұрын
That's great to hear! Happy learning.
@fadhil_rizki4029
@fadhil_rizki4029 3 ай бұрын
Big Thanks for realpars ❤❤
@realpars
@realpars 2 ай бұрын
Our pleasure!
@PhG1961
@PhG1961 3 жыл бұрын
Excellent video ! As usual, very well explained and entertaining. I'm always looking out for new content from you !
@realpars
@realpars 3 жыл бұрын
That's amazing! Glad to hear that.
@Dulalmahato2011
@Dulalmahato2011 3 жыл бұрын
I learnt a lot from your videos . I am just starting my working career . It's very useful.
@realpars
@realpars 3 жыл бұрын
That's great to hear, Dulal! Keep up the learning curve and best of luck in your career!
@sabercruiser.7053
@sabercruiser.7053 3 жыл бұрын
REALPARS IS THE BEST OF THE BEST.
@realpars
@realpars 3 жыл бұрын
Amazing! Thanks for sharing.
@IngDzib
@IngDzib 3 жыл бұрын
Great video, thanks
@dotex2809
@dotex2809 3 жыл бұрын
Best and the Beast of the field
@learnrobot32
@learnrobot32 3 жыл бұрын
thank you for this video.
@realpars
@realpars 3 жыл бұрын
You're very welcome! Let us know of any questions! :)
@learnrobot32
@learnrobot32 3 жыл бұрын
@@realpars Thank you so much. actually I have been digging more of robot related videos from you. haha
@realpars
@realpars 3 жыл бұрын
You're very welcome! We have some videos on servo motors but I will let the content tean know about your request! ;)
@generaltechnologyknowledge5165
@generaltechnologyknowledge5165 3 жыл бұрын
Very clear explanation thanks you so much
@realpars
@realpars 3 жыл бұрын
You're very welcome!
@MountainDewComacho494
@MountainDewComacho494 2 жыл бұрын
Thanks for the video. I almost exclusively use relay outputs.
@realpars
@realpars 2 жыл бұрын
Our pleasure!
@lexvanheel
@lexvanheel 3 жыл бұрын
Really very instructive videos as always! Thanks for sharing
@realpars
@realpars 3 жыл бұрын
Glad you like them!
@aminokamad1681
@aminokamad1681 3 жыл бұрын
Damn I entirely watched ur all awesome uploads sir.. really friendly tutorial video easily to understand.. keep up the good work sir. More subscribers to come..
@realpars
@realpars 3 жыл бұрын
Thanks a lot, we're glad to hear that!
@DaDaDaddeo
@DaDaDaddeo Жыл бұрын
I only source SS output modules. They are much less expensive and seem to be easier to source. This decision is easy by using slim 6mm relays in conjunction with SS output module. The slim relays allow for different power feeds, custom interlocks, take up little real estate, and are inexpensive. The combined cost of both the SS output module and the slim relays is still less than a relay output module alone. Another benefit is the isolation of the controller from the field devices.
@shearzy3152
@shearzy3152 3 жыл бұрын
From my experience, working at a machine integrator as a controls programmer, most of this is good information but largely obsolete for machine design. For any AC load, a contactor or VFD/Line reactor will be used regardless because of the limitations on switching such high currents and also because replacing the components if they become damaged is typically cheaper and less detrimental to machine downtime than replacing the PLC module. This is still good information to be aware of but it is not strictly required, sinking and sourcing are more important concepts in my opinion.
@realpars
@realpars 3 жыл бұрын
Hi Shearzy. Thanks for your feedback. You are correct of course. No PLC output is capable of operating typical AC loads in a plant and some type of interposing device as you described is required. We touched on the current limitations of PLC digital output modules in the video. As you say, sinking and sourcing are very important concepts. We’ve got more videos that will be released soon dedicated to sinking and sourcing PLC I/O modules and active field devices. Plus, we’ve got more videos soon-to-be released on motor starter types and controls. Stay Tuned!
@quanvohong4253
@quanvohong4253 3 жыл бұрын
Are the transistor outputs isolated from the control circuit within the PLC?
@realpars
@realpars 3 жыл бұрын
Yes, in many cases they are. At 4:20 in the video, the output shown is an optically-isolated output channel. This arrangement is desirable for all PLC DC output cards. For AC circuits, triacs are used, which create independent 120 VAC circuits with each device. These devices are very robust and although not isolated from the PLC driving voltage upon a failure.
@hakimbaqal
@hakimbaqal 3 жыл бұрын
Great video thanks! I am new to PLC. Is it normal to receive energy from the outputs when common is energized?
@realpars
@realpars 3 жыл бұрын
No. Most digital outputs are sourcing type.
@andreyace8768
@andreyace8768 3 жыл бұрын
Thank you for the informative and succinct video!!!
@realpars
@realpars 3 жыл бұрын
You're very welcome, Andrey!
@JKiler1
@JKiler1 2 жыл бұрын
I only use BJT modules to operate external triacs or relays. If an external relay fails, I can replace it cheaply and in seconds, as opposed to an internal relay that's part of a multi channel device.
@surendrakverma555
@surendrakverma555 Жыл бұрын
Very good. Thanks 🙏🙏🙏
@realpars
@realpars Жыл бұрын
Glad to hear that!
@sumaiyamulani6789
@sumaiyamulani6789 3 жыл бұрын
In Siemens plc S7 -1500 and ET200S which type of output module used??
@realpars
@realpars 3 жыл бұрын
Hi Sumaiya! As with all PLC's, both types of modules are used depending upon the application. Most PLC vendors have expansion modules to work with a variety of loads and voltage supplies. You can buy modules to work with AC or DC loads. You can but solid-state or dry relay type. Vendors have modules available with 4,8,16 or more outputs as well! There are too many different options available for Siemens PLC's to list here. For example, if you do a web search for S7-1500 series modules, you'll be surprised at how many options are available.
@redouanesayeh1278
@redouanesayeh1278 3 жыл бұрын
Thnx sir u really help me cuz am just beginner 🙏please can u tell me how i connect sinking module and sourcing module
@realpars
@realpars 3 жыл бұрын
Thanks for your comment, Redouane! I will pass this on to our course developers as a topic suggestion. Thanks for sharing and happy learning!
@hydidon3019
@hydidon3019 3 жыл бұрын
Can we use 1plc output to another plc input without touching plc1 program.. Just by using hardware?
@realpars
@realpars 3 жыл бұрын
Yes, provided the input and output card circuits are compatible (both 24VDC, on the same power supply circuit, etc., for example). I do this all the time to provide a level of simulation before the installation of the system in the field. Many times, this is also the best way to provide a critical signal from one PLC to another, especially for shutdown and status signals, as opposed to software transfer of data, where the data may be lost due to network or other communication issues.
@dianaaguirre1957
@dianaaguirre1957 3 жыл бұрын
Very well done video!
@realpars
@realpars 3 жыл бұрын
Thank you, Diana!
@nguyentuan-ev1zx
@nguyentuan-ev1zx Жыл бұрын
Thank you so much!
@realpars
@realpars Жыл бұрын
Happy learning!
@nguyentuan-ev1zx
@nguyentuan-ev1zx Жыл бұрын
@@realpars ❤️
@rahimbbc95
@rahimbbc95 Жыл бұрын
Possible practical training on DO 8*REL SM 322 230V
@tamilamuthanthangavel5568
@tamilamuthanthangavel5568 Жыл бұрын
Excellent sir
@realpars
@realpars Жыл бұрын
Thank you very much!
@alakenno5497
@alakenno5497 3 жыл бұрын
Thank you very much. I would like to make video about the relations between plc and HMI, and between inverter and HMI
@realpars
@realpars 3 жыл бұрын
Hi Ala! Thanks for your comment and your suggestion. I will pass this on to our course developers! Thanks for sharing and happy learning!
@joselitodupaya2092
@joselitodupaya2092 3 жыл бұрын
Thank you this video
@realpars
@realpars 3 жыл бұрын
You're very welcome!
@bhupendrakumarsinha4011
@bhupendrakumarsinha4011 2 жыл бұрын
It's really good.....
@royfamily865
@royfamily865 3 жыл бұрын
Very good, Thank You very much
@realpars
@realpars 3 жыл бұрын
You're very welcome!
@TomiBorchert
@TomiBorchert 2 жыл бұрын
i would like to see video about long distance wiring, interfaces, setup. If you have already and i've missed please can you reply with a link.
@realpars
@realpars 2 жыл бұрын
Hi Tomi, Thanks for your topic suggestion! I will happily go ahead and pass this on to our course developers. Thanks again for sharing and happy learning!
@muhammadsoleh9148
@muhammadsoleh9148 2 жыл бұрын
nice explanation
@realpars
@realpars 2 жыл бұрын
Thank you, Muhammad!
@srinikasamarakoon7924
@srinikasamarakoon7924 3 жыл бұрын
Very useful 👌
@realpars
@realpars 3 жыл бұрын
Glad to hear that!
@KayodeOluwagbenga
@KayodeOluwagbenga 3 жыл бұрын
Good learning.
@realpars
@realpars 3 жыл бұрын
Great!
@alilotfi3217
@alilotfi3217 4 ай бұрын
Thanks
@realpars
@realpars 4 ай бұрын
Our pleasure!
@rain0aldwaib
@rain0aldwaib 3 жыл бұрын
i can't say thank you enough
@realpars
@realpars 3 жыл бұрын
You're more than welcome!
@قصيعليعبدالهادي
@قصيعليعبدالهادي 3 жыл бұрын
This topic has been always confusing me. Not any more of course. Thx a bunch
@realpars
@realpars 3 жыл бұрын
Glad to hear that!
@anoopgeorge9483
@anoopgeorge9483 3 жыл бұрын
Please upload a video about ' WAGO' profibus module 750-333
@realpars
@realpars 3 жыл бұрын
Hey! Thanks for your comment and your suggestion. I will pass this on to our course developers! Thanks for sharing and happy learning!
@faizalraazy91
@faizalraazy91 3 жыл бұрын
Great video
@realpars
@realpars 3 жыл бұрын
Thanks for your support!
@aminokamad1681
@aminokamad1681 3 жыл бұрын
Awesome..
@RSuarez66
@RSuarez66 2 жыл бұрын
How come you never mentioned the flyback diode required in parallel with the relay?
@realpars
@realpars 2 жыл бұрын
Hi @RSuarez66. Thanks for reaching out. Your question is a good one. A flyback, reverse-biased diode isn't always required in parallel with a relay coil. You'll see lots of relays that don't have flyback diodes. Generally speaking, the flyback diode eliminates possible high voltage sparks when the relay coil is de-energized by attempting to remove its energizing current instantly. These high-voltage sparks can cause damage to sensitive electronics anywhere near the relay, and that's why you see a flyback diode. You'll also see them in environments where sparks could cause fires or explosions, such as on fracking equipment. So, in a nutshell - no sensitive electronics nearby, no explosion hazard, no flyback diode. I hope that answers your question!
@weoxx9003
@weoxx9003 3 жыл бұрын
helps thx
@roseelectronics4582
@roseelectronics4582 3 жыл бұрын
Looks like the good old relay is still standing tall.
@alexandernorman5337
@alexandernorman5337 3 жыл бұрын
They're simple and almost everyone is familiar with them.
@MartinPupu
@MartinPupu 3 жыл бұрын
What about PWM?
@realpars
@realpars 3 жыл бұрын
Hi Martin. Thanks for your question. Yes indeed. Many vendors offer both sinking and sourcing PWM output modules. MOSFETs are quite popular as the internal switching device.
@paulmoir4452
@paulmoir4452 3 жыл бұрын
This appears to miss the 2 most important distinctions between relays and solid state. 1) in a short circuit condition, the solid state device will fail before the fuse, while the relay may survive depending on available energy. 2) A relay can fail with welded contacts, but this is less likely than failing open where energy is limited. Solid state devices fail short circuit exclusively, unless a great amount of energy is available. Solid state devices are far more susceptible to short voltage excursions causing failure . I'm personally an electronics geek at heart and am grossed out by mechanical relays, but they have significant advantages in the industrial world.
@realpars
@realpars 3 жыл бұрын
Hi Paul. Thanks for your feedback. We certainly agree that solid state devices are far more "delicate" than good old fashion relays. As you say and as we pointed out as well, mechanical type failures such as welded contacts are problematic with relays. Even with all its inherent frailties, the mechanical relay is going to be with us for many years to come.
@KevinNguyen-tw5ml
@KevinNguyen-tw5ml Жыл бұрын
Thank you so much !
@realpars
@realpars Жыл бұрын
Our pleasure! Happy learning.
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