Driving SSRs with an Arduino Uno?

Projects General Guidance
1

Hi there,

I suspect my Arduino Uno isn't going to supply enough current to control 6 Solid State Relays that will be switching low current 125 VAC current.

How would you recommend I configure a circuit between the Arduino digital outputs to safely control 6 Solid State Relays?

Thanks,
Pete

2

Specs/links for SSRs?

3

Sorry, guess a little more info would make it easier... This is a link to the spec sheet for the SSR's I've purchased:

I puchased the ESR5102401000 model. Which according to that number and the spec sheet, means it is:

Power Type DC INPUT Control without LED indicator
AC Output Voltage of 24 - 240 VAC @ 10 A
normally open.

The specs on the input circuit are:

Control Voltage Range: 3-32 VDC
Control Current: 15mA Max.
Min. Turn-off Voltage: 1 VDC
Input Impedance: 2.0K Ohm Min.

Thanks
Pete

4

Those can be driven directly from arduino output pins, no series resistor required. And using six should not be a problem, using six arduino output pins, one for each SSR.

Lefty

5

Ok, that is very encouraging... I'm trying to follow the KISS principle!

Thanks,
Pete

6

phoyt:
Ok, that is very encouraging... I'm trying to follow the KISS principle!

Thanks,
Pete

That is always a good idea. :wink: