Industrial Relay Control System | Wiring a 24 Volt DC Relay Circuit

Industrial Relay Control System | Wiring a 24 Volt DC Relay Circuit
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A mechanical relay will contain two main components: a coil & one or multiple sets of contacts. As the coil is energized, the normally open set of contacts are closed and the normally closed are opened. It's important to know the terminology as well as the difference between the two. Furthermore, it's important to quickly determine the configuration of a specific relay and circuit based on the diagram on the front of a specific relay.
The relay above features a 24VDC coil between A and B contacts. Note that a DC relay will have a polarity assigned to the terminals while an AC relay will not. In this case, the positive terminal is terminal A and the negative one is terminal B.
The contacts are labeled from 1 to 9. By following the diagram, we can identify the contacts as follows:
Normally Open
4 - 7
5 - 8
6 - 9
Normally Closed
1 - 7
2 - 8
3 - 9
A normally open contact will not conduct any electricity while the coil is de-energized. In other words, you may measure an infinite resistance across any of the terminals listed within the "Normally Open" list above while the relay coil is not powered. Once there's a current drawn by the coil and the relay is energized, the contacts will conduct current.
The opposite is true about normally closed contacts. They will conduct current in the de-energized state and stop conducting when power is applied.
Full Tutorial: solisplc.com/industrial-relay...
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[@pujo-jojo8286]

Great video! I deal with this daily and couldn't have explained it any better!

[@SolisPLC]

Thank you, sir.

[@kevintoms9338]

Excellent instruction.

[@bronzeinabangan]

superb explanation

[@Chandan52524]

Nice information sir

[@sohailjanjua123]

Hi, I like your video. Thanks

[@jjbuddah3306]

Great video!! Can you do a video on Allen Bradley safety relays and wiring light curtains please!!

[@SolisPLC]

I've got that planned for sure. However, I only have the basic relay; not a safety curtain. I'll see if I can purchase one soon.

[@almason253]

Great video! I have a question about the 4 windows on the lower right of the relay at 3:10. Are they supposed to change to red when a circuit is closed? I'm asking because I'm looking an 8 pin relay (24 volt AC) on my boiler system and I see that windows 1 and 4 (left to right) are red. Not sure if it means on or off. Thanks.

[@libanabu6222]

hey do you have video on how to control 120v motor using this type relay? need to control from plc to motor

[@chudoe3459]

You took a meter read on the contacts, but I didn't notice a de-energized/energized voltage and resistance reading of the coil.

[@maliklao8917]

thank you so much sir ,can you do a video how to control local and BCU and remote

[@SolisPLC]

Could you give me some more info on what exactly you'd like to see? Just the concepts of controlling something locally and remotely?

[@maliklao8917]

how to control ABB medium voltage sf6 circuit breaker locally and remotely

[@ramirez509]

So, what was the resistance once energized?

[@NaserNorouzi]

Hi, i really appreciate you if you can create a video for servo control (Bosch Indradrive cs )

[@SolisPLC]

Hi Naser, I'm currently working on videos on Kinetix 350 servos. I'm not very familiar with Bosch drives nor have access to their hardware.

[@NaserNorouzi]

@@SolisPLC That is perfect , any servo work for me , just i need to be more familiar with the control concept and dig more in to that . thank yo again, i really enjoy and learn a lot for your KZbin channel (even after 15 years of programming experience)

[@sulaimanolapade9841]

How to connect slim phonenix contact relay to control a load with four terminals

[@user-jl6oc2vo9n]

Great video! Where are you from? Thaks !

[@SolisPLC]

Thank you! I was born in Ukraine; currently live in Canada.

[@user-jl6oc2vo9n]

Your English is very good.I lived in New Zealand for three years and noticed that in NZ always has used only Allan Bredly.

[@SolisPLC]

@@user-jl6oc2vo9n Thank you. It's the same in North America (USA, Canada, Mexico) 90% is Allen Bradley.

[@vfgrfbgrb]

2 and 12 are coils or normally open normally closed

[@wallysoberano9598]

My navigation light use 24 volts power suply and the load is 24 volts relay omron conected in series with the 24 volts 50 watts, but the light is not shining and the relay si functioning, what is the problem of my navigation light? Can you please help me, i already use 48 volts to suply both load but nothing is change.. light is not shinning.

[@digvijaypatil5001]

Sir can you make on subroutine organisation and linking in it..

[@SolisPLC]

I have a video coming up exactly on this topic.

[@digvijaypatil5001]

Thank you sir... We are waiting for it..

[@joew4202]

Dang man I thought you were reallly going to wire it up

[@somitagrawal1312]

5 amp ki realy ko cut karne par dc fan on off hone lage

[@vfgrfbgrb]

120 volt ac

[@AshishKumar-zh3fe]

H a l l o

[@somitagrawal1312]

5 amp ki realy ko cut karne par dc fan on off hone lage