Having some trouble, and just trying to see what I can do to make progress.
Attempting to use a pro micro to control some SSR's, to control a winch. The winch is a vevor, the motor is inductance, single phase, 120v, and has 5 wires. The pendant is simple, Estop, and up and down buttons. The buttons are on a common container, with power to #1, Neutral to #2. When up is pressed, 1 connects to 5, and 2 connects to 6. When down is pressed, 1 is connected to 2 and 6. Looking at the provided photos, Yellow goes to green, and white goes to black, when pressing the button nearest the estop. I have 2 SSR's, running on separate arduino pins, common ground, using diodes. The trigger activates both SSR's as it should. The motor works on the pendant, and just hums from the SSR's.
Hello, Bob. Welcome to the Arduino forum. We have a very similar problem: we cannot see what you are seeing while you are writing about it. Sorry, but that is why we need YOUR help.
Please make a block diagram, with EACH of your devices as one block. Draw in lines between the boxes to represent the wires and label each end of the wire if it goes to an Arduino pin. Include all power supplies in the diagram.
Then take a photo of your diagram and include it in a forum posting.
Then explain what the some trouble you are having.
I see a capacitor in your drawing. That will be a "run capacitor" for the motor which must be a split-phase motor with the capacitor providing a second phase to enable the motor to start turning and keep turning.
The hum you notice is because there is no connection for the capacitor when not using the pendant. Therefore the motor cannot begin turning because there is no second phase current. Find the missing connection for the capacitor and things might stop humming and start turning.
With the SSR's, I have them wired the same as the pendant, using all 4 wires. Hot comes in jumps (yellow 1 to green 5), is sent through the safety switch, travels to the motor, hit the original jumper on the motor side of the cap, feeds back through the cap on the white wire, which takes the buss from (white 2 to black 6) in the pendant (now SSR) back to the motor, back to neutral on the outlet.
I will look more, but if I just move the wires back to the pendant, it works. Well at least I have proof the motor still works, and the cap is still good.
Your SSR circuit should duplicate this circuit. BUT, BEWARE!!!!
You will have two SSR back to back in place of the SPDT switch for CW and CCW directions. SSR are NOT identical to real relays. They all have some leakage current. You will have two SSR back to back across the 120 VAC line. If this is how you actually have the SSRs wired, one or both may have been toasted inside and this is why they don't work.
Your idea of replacing the physical switches with SSR is very dangerous.
I am confused. If I connect yellow, black, and white together, and plug in the wall, it turns on as desired. If however, I connect yellow to SSR to AC1, and Black and white it SSR AC2. I get a loud buzz when activated.
Ugh. SSR was the route that searching lead me to, and a bit of money has been spent. But, I can still change it.
So, if you were to control this motor, via an arduino program, what would be your choice? The motor is 110v and 1300w. Specific parts if possible. Safety is important to me.
First, learn to make real schematics. Your first image cannot reverse the direction of the motor, so begin with a schematic of the factory connections using the pendant and verify the switch operations/connections with an Ohmmeter. You do not need to apply power to check out all the connections.
Then If I was doing it, and I have built a small crane using 12 volts with a control pendant. Able to lift/lower up to 90 lbs. I would use REAL relays that could handle at least 15 amps, which is a bit more than your winch. Real relays mean there will be real isolation between the contacts.
What are you using to power your Arduino project today? If you use 12 volt relays you can use automotive type relays which are readily available and can handle the current.
To control the relays you will need MOSFET transistors to control the relay action, and allow your Arduino to switch the MOSFETs on and off.
And, again, learn to draw a schematic of your project before picking any relay or other component.
