driving 1hp waterpump with 240v through 12v relay

Using Arduino Motors, Mechanics, Power and CNC
1

can i use a 12v relay module(controlable with 5v signal) to drive a 1hp waterpump with 240vac 50hz ....and how can i interface the above with an i.r sensor..my board is unoR3...its for my poultry firm..plz help me with this if possible giva a hint abt the coding...plz help asap..thank u

2

Can you do the math, and tell me how many amps you need?
There should be several relays to fit your need, but are normally rated in volts and amps.

3

Use this solid state relay on the pump, instead of a 12V relay. The SSR input terminals can be directly connected to an Arduino output (and ground).

4

jremington:
Use this solid state relay on the pump, instead of a 12V relay. The SSR input terminals can be directly connected to an Arduino output (and ground).

That should be more than enough to do the job, great choice.

@OP, now you know a good relay, what do you want the code to do with it?

5

Is this an induction motor pump? If so make sure the SSR is rated for inductive load or you'll
likely get grief.

6

MarkT:
Is this an induction motor pump? If so make sure the SSR is rated for inductive load or you'll
likely get grief.

Thanks MarkT. Can you give us any url to such SSR devices?

7

Thanks for ur help jackWp...my water pump is 3 to 7 amp rated under 240v and 380v..and m using a 12v relay module...but today I get a ssr and I hv successed in both...but I m still getting problem withinterfecingmy irsensor with it..help me with this one plz...that would-be awsm

8

Hi,
How long is the wire from the IR sensor to the arduino?
If it is over 20cm, I'd make sure its a shielded cable to shield the leads against the interference.
Have you got the AC wiring away from any of the arduino wiring?

Can you please post a copy of your circuit, in CAD or a picture of a hand drawn circuit in jpg, png?
Can you please post a picture of your project?

Tom.... :slight_smile:

9

TomGeorge:
Hi,
How long is the wire from the IR sensor to the arduino?
If it is over 20cm, I'd make sure its a shielded cable to shield the leads against the interference.
Have you got the AC wiring away from any of the arduino wiring?

Can you please post a copy of your circuit, in CAD or a picture of a hand drawn circuit in jpg, png?
Can you please post a picture of your project?

Tom.... :slight_smile:

and do not use the shield as one of the leads to the sensor. Connect only the Arduino end of the wire shield to the Arduino ground. Sensor end of the shield must not be connected to anything

Paul