PROCEDURE FOR CONTROLLING AN ELEVATOR

摘要

The invention relates to a procedure for regulating a velocity-controlled elevator drive. An a.c. motor (28) driving the elevator machinery is regulated by means of a frequency converter (26) supplying the motor (28) with a controlled frequency and voltage. The load condition of the elevator is measured by means of a load weighing device (32) in the elevator car. A power limit (PA) is input to the elevator machinery as a reference value and the speed reference (38) given to the frequency converter is determined on the basis of the power limit (PA) and the load condition.