Accionamiento de ascensor con un motor eléctrico

Accionamiento de ascensor con un motor eléctrico (62), que está dividido en varios segmentos (12, 14, 52, 64), en donde a cada segmento (12, 14, 52, 64) está asociado un convertidor (16, 18, 54, 66), en donde está previsto un transmisor de giro (68) para los convertidores (16, 18, 54, 66), en donde el transmisor de giro (68) activa los convertidores (16, 18, 54, 66) a través de un mando central (70), en donde los convertidores (16, 18, 54, 66) se activan a través de un enlace de bus en serie (72), en donde el mando central (70) alimenta con señales de control los convertidores (16, 18, 54, 66) a través del enlace de bus en serie (72). The drive has an electrical motor that is subdivided into a number of segments (12, 14), where converters (16, 18) are assigned to each of the segments. The electrical motor has a stator and a rotor, where the stator is subdivided into the segments in a circumferential direction. Each winding in the stator is designed as individual windings, where each coil (28) of the stator winding is designed in a concentrated form. Independent claims are also included for the following: (1) a method for monitoring a spring pressure-operated brake (2) a braking device for an elevator drive for executing a method for monitoring a spring pressure-operated brake.