What is a Redundant Power Supply and How Does It Work?

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The electrical components inside enclosures that house industrial automation systems like PLCs often operate on a 24 volt power supply. So in these enclosures we usually need one or several power supplies that each have a 24 volt output voltage.
But in some applications where ultra-reliability is essential, and an unexpected loss of power would be disastrous we need to use “redundant power supplies”.
In this video we’re going to learn exactly how these types of power supplies work from a practical perspective.
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Опубликовано:

1 дек 2014

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Комментарии : 58

@bernds1488 6 лет назад

hi guys. these videos from parsic are by far the best i found about plc and automaton so far. they are easy to follow and don't waste too much time with adam & eve. if i had them 30 years ago......

@worachetpanpradit3550 8 лет назад

Thank you so much. It is very useful and easy understand.

@gopendrapratapsingh7270 9 лет назад

Thanks really good to know about redundant power, nice idea got from your vedio.

@realpars 9 лет назад

Gopendra Pratap Singh Cool! :)

@atiqrehman5694 9 лет назад

That was very nice , i love your videos and specially your way of explaining things. Please upload a video of example program on using analogue inputs and outputs in S7 300 PLC's the same way you did for Mixer but in this program use Analogue input and outputs, for better understanding of Simatic 7... Thanks PS: Keep up the good work :)

@realpars 9 лет назад

Atiq Rehamn Thanks Atiq. Glad you found it helpful. We'll consider your suggestion for future videos!

@36pandher 9 лет назад

Tepergy, I appreciate your work which have proved very helpful for me. I have one problem in PLC could you build ladder logic for sequence 1. (A+ D+), (B+ C+), (A- D-), (B- C-) here A&C is operated by double solenoid and D&B is operated by single solenoid. 2. The following operator controls must be incorporated: a. SW1 will be used to select between single or continuous cycles. b. PB1 will be used to start the sequence in either operating mode. c. PB2 will be used to stop the sequence (at rest position) in continuous mode.

@julianreynaga6432 9 лет назад

Thanks!

@realpars 9 лет назад

Julian Reynaga You're welcome!

@ForWhomBellstols 2 года назад

thank you for the video good sir 👍

@realpars 2 года назад

You're very welcome!

@malayshahh 2 года назад

Great video!

@realpars 2 года назад

Glad you enjoyed it!

@pozhproject 9 месяцев назад

Thank you

@realpars 9 месяцев назад

You're very welcome!

@aftabhassan9528 9 лет назад

Friend it is very easy to understand, Thanks.Do you have DCS tutorial like that ?

@realpars 9 лет назад

Aftab Hassan Not at the moment!

@abdullatifansari8445 8 лет назад

its usefull

@awanawan6410 Год назад

Great explanation. Please share diode circuit which you have discussed in this video. Also explain external module that can be used to connect 2 supplies in parallel

@realpars Год назад

Thanks for your comment and feedback, I will happily go ahead and forward this to our course developers. Thank you for sharing!

@dennistaiwo1467 4 года назад

Thanks for the videos.pls add videos about addfem poco

@realpars 4 года назад

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

@mdadil9233 3 года назад

Can you share the Circuit diagram for the external redundant module !

@naeemansari5117 3 года назад

I cordially admire your efforts, your videos are very informative, i want to learn about electrical panel wiring. can u plz make a conceptual animation for beginners and for professionals like testing and commissioning engineers, specially protection relay panels & switch gears.

@realpars 3 года назад

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

@NitinKumar-se5qk 9 лет назад

nice concept its better to use 2 SMPS in spit of one it ii defiantly save some break down time in processing plant.

@1skeeta4u 4 года назад

Can you prove it?

@user-wv3eq3vq5e 8 месяцев назад

I just wonder if it is necessary to use a diode module of the same brand as the power supplies. And thank you for your effort.

@realpars 8 месяцев назад

Hi there, Thank you for your question. It's not necessary to use the same brand of equipment as long as the technical specifications, such as current and voltage, align. However, it's important to exercise caution, as certain power supplies may feature wired output relays that are connected to a monitoring station or Programmable Logic Controller (PLC) to alert operators in case of a failure. When considering factors like cost and engineering specifications, it's generally advisable to adhere to the original design, unless the power supply has become obsolete, in which case an upgrade would be necessary. Happy learning!

@rhythmandacoustics 4 года назад

There should be videos about surge protection and harmonic filters.

@realpars 4 года назад

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

@keepfalk9644 8 лет назад

WHAT SIZE AND KIND OF COMPUTER GOOD FOR RUNNING SIMATECH S7 PROGRAM ?

@realpars 8 лет назад

+borey koum Hi there! Here are tthe requirements for installing STEP 7 (TIA Portal) V13: sie.ag/1LNeXA6

@zaidhussain5206 Год назад

Thank you for sharing this video really informative, I wonder what is model number of the redundant power supply module that combine both PSUs ??

@realpars Год назад

For an S7-300, the redundancy module number is 6EP1961-3BA20. There may be other PSU combinations available.

@zaidhussain5206 Год назад

@@realpars Thank you for your reply

@zaidhussain5206 Год назад

@@realpars Can you share the specification datasheet for the module ?

@isaacakunuewur8612 4 месяца назад

i want to a full training on plc .is there an online training for persons like me who have no knowledge in plc

@realpars 4 месяца назад

Hi Isaac, Thank you for your message, and I am happy to help you out! When it comes to PLC Programming, we've got you covered with a range of courses tailored for all skill levels. Whether you're just starting out or you're looking to dive deeper into advanced concepts, we've got something for everyone. Check out our course series right here: www.realpars.com/courses?learning=PLC+Programming Feel free to make use of our 7-day trial period. It's the perfect way to dip your toes in and see if our courses align with what you're looking for. Happy learning!

@shahnawazhussain4842 5 лет назад

Sir can u make video on CPU memory and its loading while a program is run in it

@realpars 5 лет назад

Hi there, I will pass your request on to our creator team ;)

@shahnawazhussain4842 5 лет назад

@@realpars thank you very much

@MarcosHenriqueLimaS 7 месяцев назад

🎉🎉

@mj625 4 года назад

What is the difference between the redundant power supply you have here, and a dual redundant power supply?

@realpars 4 года назад

In this video, there is a voltage detection circuit that switches power to the devices from one power supply to the other when a power issue is detected at the primary power supply. This is a sophisticated and efficient way to provide continuous power to the panel, maintaining surge protection and other safeguards on a power-supply-specific basis. Another way to provide redundant power is to connect both supplies in parallel to the loads without a switching circuit. This is not as efficient since each supply will run at a reduced load, and a catastrophic failure of either power supply could bring the entire power supply system down (surge could trip both power supplies' breakers).

@ebrahimroostaei1795 Год назад

😍😍

@md.moshiulalam780 9 лет назад

PARSIC No updates for last 1 month!

@realpars 9 лет назад

***** A new video will be uploaded soon!

@md.moshiulalam780 9 лет назад

TEPERGY still no new lecture found.

@Infact1988 8 лет назад

it's good

@Infact1988 8 лет назад

it's good

@Infact1988 8 лет назад

it's good

@muhammadbilal-rv4ju 7 лет назад

describe with diagrame

@mnada72 4 года назад

So in all cases does only one power supply carry the full load ? I mean is there a case where the load is shared between the PS ?

@realpars 4 года назад

Yes, depending on the hardware used, either one power supply is used at a time (redundant configuration), or both are used in parallel. Connecting 2 power supplies in parallel, even with current-directing diodes, is not the most efficient use of the power supplies. One problem is the result of one supply failing or the output circuit faulting/short-circuiting. The other problem is that no two power supplies are identical, so the one with the higher voltage will provide more of the power in a parallel arrangement. The only practical reason for parallel operation is to boost output current. In that case, use a larger power supply. It is the safest and most efficient. If you are worried about reliability, use a redundant power supply configuration with a diode “ORing” module to switch from one power supply to the other when there is a failure. This will maximize performance and power supply life.

@mnada72 4 года назад

@@realpars thanks

@dandidandi5900 Год назад

They have different power source. Don't they?

@realpars Год назад

There is a single source of AC power to the panel. Power supplies are used to convert AC to 24 VDC to be used by the different PLC and I/O circuits in the panel. Some devices, such as the HMI panels, use the 120 VAC power directly. We use breakers to provide the means of isolating the different AC and DC circuits.