slow collision sensor why?

I have created an actor that is of the sensor type its collision. but do not know that the player when it collides with it slows down, when there should be no collision since it is a sensor.
Why does this happen that the actor with sensor acts as a soft collision?

I already solved it, for some strange reason, a condition of a yes of speed Y and condition of the floor gave as a result that when passing through a sensor the player's speed would be relettered