Tyre building plant and method for supplying an elongated element to a forming drum in a tyre building plant

A tyre building plant comprising a forming drum and a supply device for supplying an elongated element toward said forming drum, said supply device comprising:

• at least one conveyor belt extending in a supply direction between a loading region, wherein in the loading region, said elongated element is loaded on said conveyor belt, and an unloading region, wherein in the unloading region, said elongated element is unloaded from said conveyor belt;
• a motor member configured for moving said at least one conveyor belt between said loading region and said unloading region;
• a control unit configured for controlling the loading of said elongated element on said conveyor belt and moving of said at least one conveyor belt;
• at least a first detection element fixedly associated with a first portion of said at least one conveyor belt;
• and
• a sensor, wherein the sensor is fixed and independent with respect to said at least one conveyor belt and detects a position of said first portion with respect to said supply device,
• wherein said control unit is further configured for controlling the loading of said elongated element on said conveyor belt when said first portion is at a predefined reference distance from said loading region.