Understanding M1 Two-Speed Motor in Overhead Crane Electro-Hoist: Operating Principle and Wiring

Hello colleagues.
I am looking for information on the M 1 two-speed motor, which is used in an overhead crane (electro-hoist) to lift and lower the weight, I suppose that it is a motor with two separate windings, because if the motor was one winding with a switchable number of poles, its beginnings were derived and the ends of the winding would have to be connected somewhere, either in a triangle or in a star, and I don't see that anywhere in the diagram.
I am asking for help on why this M 1 engine,
when changing speed, it always has one phase W 1 and W 2 energized, as shown in the attached picture.
Thanks.
Best regards.

Hello .
These are probably two different (separate windings). It does not matter for the motor as one phase is fed, the other is not. In this case, the point is that one phase is constant (invariably given to the motor W1, W2) while the other two phases are given alternately to obtain the right or left rotation of the motor. As we know, a three-phase motor to change the directions of rotation, it needs to change only two phases, not three. Hence this solution. When supplying W1 and W2 at the same time, nothing happens in the motor, because there is no closed circuit.

Added after 2 [minutes]:

The windings U1, V1, W1 are not connected with the windings U2, V2, W2 (ends or beginnings).

Just in this case, the change of these two phases forces a change of rotational speed (1K), not the direction.
But why is it supposed to ensure that when working at one speed, one phase of the other speed is already energized?
And when we do not have the selected direction (2K and 3K), neither left nor right, no phase in any winding is powered ????

1. 1K does not change phases but feeds different windings.
2. It serves no purpose and simplifies the engine power supply system.
3. A stopped motor requires no power.

Here my colleagues are right. I misread the diagram in a hurry. The K1 contactor changes the engine speed, while K2 and K3 change the direction of the engine rotation at both speeds.