I need to control several 24VDC motors using an arduino (D1 mini actually) and 4 channel relay. I bough one of these solid 4 channel state relays relays (the DC version: Input 3-24VDC, load: 2A, 50VDC). My question is, how should I wire all up.
I was thinking on CH1,2,3,4 into D1-mini IO channels and the DC+/- from the relay module to the 24VDC external power supply. Outputs DC+/- into the motor DC+/- respectively. Is this the correct setup? I think Im missing some ground from the arduino to the relay module but given the difference in voltage it doesnt make sense
Can You bring us the data sheets, in English, of the SSR module?
Please make a drawing of Your intended wiring. I don't read poetry and make drawings here. They get wrong, or incomplete, most of the time.
jtomasrl:
I need to control several 24VDC motors using an arduino (D1 mini actually) and 4 channel relay. I bough one of these solid 4 channel state relays relays (the DC version: Input 3-24VDC, load: 2A, 50VDC). My question is, how should I wire all up.
I was thinking on CH1,2,3,4 into D1-mini IO channels and the DC+/- from the relay module to the 24VDC external power supply. Outputs DC+/- into the motor DC+/- respectively. Is this the correct setup? I think Im missing some ground from the arduino to the relay module but given the difference in voltage it doesnt make sense
You are correct for the Arduino side. The SSR + goes to the ARduino pin and the - to ground. But you need to put the SSR in SERIES with the power going to the motor, so the SSR can turn the motor on and off.
The SSR contains a MOSFET to do the actual switching. One way to connect is to connect the SSR 50 volt + side to the power supply + side. And the SSR to the + side of the motor. The - side of the motor goes directly to the - side of the power supply.
In all cases, you still need a diode across the motor to stop the back voltage when you turn off the relay.
