Controlling a AC motor 24V with an arduino

I need circuit to control a 24 V AC motor with an Arduino. Can somone help me with it?

Do you mean a relay?

Paul

Post a link to the motor or motor data sheet.

And say what you mean by "control". Just on/off? Or speed? Or speed/direction? Or.....?

Steve

No.I want to controle the speed of the motor.

Then post details/specification/link to the motor you are talking about. "24 V AC" could be anything.

Steve

AC servomotor? BLDC motor? 24V induction motor? 24V universal motor? What exactly is this motor?

A model train. Marklin 3rail

SieKieR: A model train. Marklin 3rail

Then it would have a series would motor with brushes. Control it just like a DC motor.

Paul

That gives some problems. I want to do it with ac power.

SieKieR: That gives some problems. I want to do it with ac power.

How is it controlled now? Must be a resistor in series with the motor, How is it reversed? Must be reversing wither the armature wires or the field wires with a switch.

Paul

Now it’s controled by a transformer. It’s reversed by sending 20V to the motor. Then a magnet switches the contact so the power to the motor is reversed.

This is the motor.

download (2).jpg

SieKieR: This is the motor.

That picture is SO BIG I can almost see it.

Paul

SieKieR:
Now it’s controled by a transformer. It’s reversed by sending 20V to the motor. Then a magnet switches the contact so the power to the motor is reversed.

So, you are already sending DC to the motor to switch the magnetic switch.

How would that work with an Arduino controller?

Paul

Perhaps this is an application for an opto-triac?

That's what I was asking. How to conrol the DC motor with an arduino

Jou can program the Arduino to regulate the voltage, but that is DC. The Marklin train is AC. so I need a scheatic how to convert the DC to AC.