The solid line shows the torque generated when rotating from (−ϕ) to (+ϕ) direction while power(in Watts) is supplied.
When the energizing direction is reversed, it rotates from (+ϕ) to (−ϕ) direction and shows the torque curve as in the dotted line. These solid and dotted curves are symmetrical with the line passing through the position of the rotation angle ϕ = 0°.
The 0-V curve shows the holding force of the permanent magnet during the de-energized state.
The rotational angle ϕ = 0° is normally the center point of symmetrical rotation. In the product drawing, it is shown as where the flat face (D-cut) of the center shaft is oriented.
