Drum Switch problem

[tonnyandre09]

Good Evening

I have bought a new single phase motor (370w, 220v) for my old lathe and the lathe came with a drum switch that I would like to use with it. Is is the same switch as in this video

But he do not have the same wiring on the motor as me so I am wondering what wire is going were. With me I have the standard (European?) U1, U2, V1 etc.. Could anyone please help me?

 

[den-den]

Drum switches come in multiple configurations even when they look exactly the same on outside. Many have a diagram on the cover. Connecting one requires finding a diagram (or making your own diagram with a multi-meter and some experimenting).

 

[RJSakowski]

Reversing a single phase motor requires additional wires from the motor. The start winding connections are reversed to reverse direction. Depending on motor winding configuration, this could be accomplished with a single winding (second winding connected internally to the junction of the two main windings). The motor wiring plate will give that information. Past that, it is a matter of bringing the connection configuration out to the external switch. One set of contacts on the drum switch just controls power to the motor and the contacts are shorted in either direction of the switch but open in the Off position. The remaining contacts are used to reverse the start winding. From your overlay, it appears that the lower set of contacts will control power as they are connected in both directions. The blue wire from your power source would be connected to one contact and the other contact would be connected to one leg of the main winding. The wiring of the remaining will depend on your motor configuration.

 

[Bi11Hudson]

As stated above, drum switches come in any number of configurations. There will be four(4) terminals that form a reversing switch and two(2) that form an ON-OFF switch. Find the two that form that ON-OFF switch that operates in both directions and mark them, in your mind at least, and then concentrate on the other four. As a rule, but not to be considered an absolute, the ON-OFF switch will be the furthest set of contacts from the handle.

I am not familiar with the wire numbering practicees on European motors. But for a 'single phase' motor, it will be an absolute that there are two windings. A 'RUN' winding and a 'START' winding. The START winding will have a capacitor in the circuit. To reverse the motor, the START winding must be reversed in relation to the RUN winding. The START winding MAY have either 1 or 2 leads. In the case of 1 wire, it is simply a matter of swapping from one line to the other.

Without exact readings of the windings AND exact configuration of the switch, I cannot say to connect wire 1 to terminal 3, or some such. You will need to figure out what goes where with the configuration given above.

.

 

[markba633csi]

Is there a data plate on your motor you could show us? Not enough motor info here- motor model number? Data sheet from internet?
Also, youtube info, it's often wrong or not applicable regarding motors and reversing switches
-M

 

[sdelivery]

Sounds like a two speed motor...where is the picture of the motor wiring diagram?