RELAY ORIENTATION: "BOTTOM VIEW"

[ViperDoc]

I'm using the OMRON G6A-234P relays in my current build. The relay diagram is printed on the TOP of the relay. When the relay diagram says "BOTTOM VIEW", what does that mean exactly? Does it mean:

1) If you flip over the relay, this is where the connections will be oriented (as viewed from the bottom), OR
2) These are where the connections are on the bottom of the relay (as viewed from the top)?

https://www.mouser.com/datasheet/2/307/ ... 189826.pdf

Thanks.

[martin manning]

It means the diagram is showing you what the connections are when viewed from the bottom. The trick here is that since it uses a PM armature the coil connections are polarity sensitive: The positive voltage must be applied to the opposite side of the relay from what is shown on the top, and the protection diode has to be installed with its cathode connected to the positive voltage.

[ViperDoc]

Thanks, Martin! Excellent.

[sluckey]

This may be helpful...



In fact there's lot's of good info on this page. Also a few confusion factors...

http://el34world.com/projects/relay_switch.htm

[ViperDoc]

Many thanks! Just another example of odd design, IMO. Why print a "bottom view" on the TOP of your relay that you can't see while viewing the bottom? The only thing that matters to me is knowing that the "+/-" are opposite of the BV graphic right-side-up, just so I can wire these babies up correctly.

[sluckey]

Many thanks! Just another example of odd design, IMO. Why print a "bottom view" on the TOP of your relay that you can't see while viewing the bottom? The only thing that matters to me is knowing that the "+/-" are opposite of the BV graphic right-side-up, just so I can wire these babies up correctly.

Where else would you have printed it on that style relay? Be thankful that they even bothered to print it. You could be stuck looking at a datasheet...

[ViperDoc]

Believe me, I’m good with top or bottom like the next guy, but if it were up to me, I’d print the Top View on the top so it’s all oriented like it will be when placed in the circuit. But I’ll take what I can get!

I looked at the data sheet before popping the question, it didn’t point out the obvious. Thanks for saving the day, man.

[sluckey]

Believe me, I’m good with top or bottom like the next guy, but if it were up to me, I’d print the Top View on the top so it’s all oriented like it will be when placed in the circuit.

Top view is meaningless. You're gonna make all your connections on the bottom.

[ViperDoc]

I'm going to have to agree with you on that one. Seeing as how Bottom View is the one printed on every relay I can find, I'm guessing serial non-comformity is going to get me nowhere.

[adew]

Thanks, Viperdoc, for creating this thread. Orientation "bottom view" had been driving me crazy designing a small relay PCB. Now all is clear. Cheers!