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Topic: arduino + 230V pump + ethernet shield (Read 4144 times) previous topic - next topic

neepie

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.

zoomkat

Quote
Is it possible to make ethernet shield control inputs/outputs over LAN? A website that has buttons for on/off etc?


Yes
Google forum search: Use Google Advanced Search and use Http://forum.arduino.cc/index in the "site or domain:" box.

tkbyd

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!)

neepie

#3
Jun 23, 2011, 02:26 pm Last Edit: Jun 23, 2011, 02:33 pm by neepie Reason: 1
Why arduserver and not arduino + ethernet shield?

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


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?

zoomkat

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
Google forum search: Use Google Advanced Search and use Http://forum.arduino.cc/index in the "site or domain:" box.

neepie

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.

tkbyd

Quote
I can make my own board with one relay.


Yes... but can you make one that will be safe at those voltages?

f.schiano

#7
Jun 27, 2011, 11:17 pm Last Edit: Jun 27, 2011, 11:23 pm by f.schiano Reason: 1
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.
L'impossibile...richiede solo piu' tempo!

neepie

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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