Device for managing an electrical power failure in, in particular, a yarn transformation textile machine

Device for managing an electrical power failure in, a yarn transformation textile machine comprising:

• a first system means for advancing yarns comprising a set of yarn advancing elements subjected to action of motor devices controlled by frequency converters or changers supplied by a common direct current bus;
• a monitoring/control system supplied by the same direct current bus;
• a second system for processing the yarns comprising power spindles subjected to action of individual motor devices controlled by frequency converters or changers,
• wherein:
• power spindles are not supplied by the common bus but are self-powered and autonomous;
• and
• power supply to the common bus of the set of yarn advancing elements is maintained by a flywheel so that the first and second systems are totally electrically independent, only a value of ramp functions of both systems avoids any voltage fault.