BRAKE CONTROLLER OF ELEVATOR

摘要

When braking force is produced in a brake of an elevator in which an armature (17) is attracted against a spring (7) by means of energization of a brake coil (16), and, as a result of attraction of the armature, a brake shoe (9) remaining in pressed contact with a brake wheel (6) is released from the pressed contact, first brake coil control means (38) decreases energization of the brake coil (16) such that the armature (17) is released from an attracted state. When the rate of decrease in a brake coil current (Ib) has been slowed to a level below a predetermined value or the brake coil current (Ib) has turned into an increase during the course of the first brake coil control means (38) releasing the armature (17) from an attracted state, the brake coil (16) is energized within a range in which the armature (17) is not again attracted, by means of effecting a switch to the second brake coil control means (39), thereby lessening impact sound which arises between the brake shoe (9) and the brake wheel (6) by means of the force of the spring (7). <IMAGE>