Which arduino is suitable to operate single phase and three phase pumps/ motors

Other Hardware Motors, Mechanics, Power and CNC
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I want to upgrade an old contactor/ relay /timers panel to arduino sytem.
#Is it possible to operate single phase(6.6 Amperes/1.4 kw) and three phase water pump/ motors(4.7Amperes /2.8KW) with arduino. With "4 Channel 5V/12V/24V Relay Module BK_RL4_01(which is made for arduino to operate high power appliances)".http://www.elecfreaks.com/store/4-channel-5v12v24v-relay-module-bkrl401-p-269.html

Im scared if the there is over current from the pumps, is there risk of damaging the arduino board.

#Which board will be suitable.(uno/mega/etc..)

#Can one ultrasonic sensor read all levels:- low/medium/medium-high/high/ high-high(with one sensor) or should i buy for one for each level.

Any ideas.thnx

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  1. Yes, that looks like it should work. But it doesn't look safe. The isolation between the high voltage and low voltage is hard to determine from that web page. Switching 3 phase simultaneously also looks like that may be an issue.

  2. Basically any 5V Arduino is suitable. They do not appear to have a 3.3V version of this relay board.

  3. Probably. Ultrasonic sensors are analog and they can measure distances with reasonable accuracy.

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250V max rating on the relays is not 380V or 415V, so its clearly not adequate for 3-phase power at all.

Get an industrial contactor for 3-phase equipment, and do things safely

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Hi,
I think we need a suggested circuit diagram and what you are trying to achieve,

I want to upgrade an old contactor/ relay /timers panel to arduino sytem.

Yes, that is possible, using rated contactors and overloads controlled by a set of relays to isolate the arduino.

Can one ultrasonic sensor read all levels:- low/medium/medium-high/high/ high-high(with one sensor) or should i buy for one for each level.

What else did the old system do? And how?
You will be limited using ultrasonics, how low is low and how high is high?
Tom..... :slight_smile: