Electric Motor Question

[jakeco88]

I'm doing my first electronics project and need an electric motor which will rotate both ways. I salvaged this motor from a small ice cream maker. It will rotate both ways, but there doesn't seem to be any way to control which way it will rotate at any given time.

Can anyone tell me if there is a way to control the rotation? Or am I out of luck? If more information is needed, let me know. Thanks in advance.

Jake

[pebe]

It looks like this is the one:

http://www.eurokaltd.com/pro.asp?anjimid=101014

It's a 2pole synchronous motor with a separate winding for each pole. The data sheet shows the two windings are in series with pin 2 connected to pin4, and the mains supply would connect to pin1 and pin3.

Almost certainly one pole is 'shaded' to give a phase delay in the winding. If so, reverse the connections to one of the windings (connect pin2 to pin3 and connect the mains to pins 1 and 4) to reverse the direction.

If that doesn't work then you could try contacting the manufacturer.

[jakeco88]

[quote="pebe"]It looks like this is the one:

http://www.eurokaltd.com/pro.asp?anjimid=101014

It's a 2pole synchronous motor with a separate winding for each pole. The data sheet shows the two windings are in series with pin 2 connected to pin4, and the mains supply would connect to pin1 and pin3.

Almost certainly one pole is 'shaded' to give a phase delay in the winding. If so, reverse the connections to one of the windings (connect pin2 to pin3 and connect the mains to pins 1 and 4) to reverse the direction.

If that doesn't work then you could try contacting the manufacturer.[/quote]

Thanks. Here is a diagram of how the motor was wired in the ice cream maker. As you noted, pins 2 and 4 are connected, with the main power going to pins 1 and 3. However, I am confused by the two wires running to pin 3, seems they would short.

The motor seems to randomly pick which direction it goes, and will only switch when turned off and on.

[pebe]

This motor is a dual voltage 120V or 240V. There is a winding connected between pins 1 & 2, and a second winding connected between pins 3 & 4.

As you say there is a short with the windings connected as shown. But I think the diagram is at fault. The black wire going from the supply to pin3 should go instead to pin4. Then both coils are wired in parallel to the 120V mains supply.