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Author Topic: arduino + 230V pump + ethernet shield  (Read 3598 times)
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Is it possible to make ethernet shield control inputs/outputs over LAN? A website that has buttons for on/off etc?


What would be smart way to control 230V mains with 5V arduino? SSR isnt possible because it has to be NC-relay. If arduino fails etc that relay has to conduct.
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Is it possible to make ethernet shield control inputs/outputs over LAN? A website that has buttons for on/off etc?

Yes
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Control outputs:

arduserver.com

Switch 230v:

Use a professionally designed, constructed relay solution, unless you need very rapid on/off switching.

http://www.arunet.co.uk/tkboyd/ec/ec1mains1.htm

(Thank you! The draft for that has been languishing in my "to do" pile for a long time! You inspired me to get it Out The Door!)
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Why arduserver and not arduino + ethernet shield?

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this mains socket type aint working for me. Its not gonna be a socket device, its a fixed device, house heater water pump.

How about a small 5V relay to control SSR relay? That way i could have NO operation and i think SSR would be right one for this?
« Last Edit: June 23, 2011, 07:33:51 am by neepie » Logged

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Thre are various relay boards available that are made for use with microcontrollers, parallel ports, etc.

http://www.ecrater.com/p/3528455/fp08-8-relay-board-kit-for-pic
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Hmmf.. I mean would it be best to use 5V relay to control the input of SSR? that way i can get NC operation. I dont need ready made 8 relay boards for that. I can make my own board with one relay. I just want to know are there any better way to do it?

Arduino controls 5V relay that switches SSR which is connected to AC motor.
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I can make my own board with one relay.

Yes... but can you make one that will be safe at those voltages?
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If you don't find a relays controlled with the 5V , you can also take one controlled at 12 V and use it with a BC337 transistor that could work as a switch.
Look here:
http://www.electronics-tutorials.ws/transistor/tran_4.html


http://www.electronics-tutorials.ws/transistor/tran12.gif

Did u understand ?

Bye,

Fab.
« Last Edit: June 27, 2011, 04:23:51 pm by f.schiano » Logged

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Seems like it will be arduino controlling 12V or 5V relay that controls this http://www.vekoy.com/product_info.php?products_id=18141
  3-phase contactor.

Or someone got better?
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