Title:
CONTROLLER FOR MOTOR WITH ELECTROMAGNETIC BRAKE
Document Type and Number:
Japanese Patent JPH1127972
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To prevent huntings by serially connecting a control circuit which controls energizing the exciting coil of an electromagnetic brake to hold and release a rotating shaft, and a coil having an inductance component between the exciting coils of the electromagnetic brakes. SOLUTION: A control circuit 3 is an upper control circuit, such as a programmable controller which controls energizing an electromagnetic brake 1 by controlling a switch 4. A coil 5 is a coil which has an inductance component and is serially connected between the electromagnetic brake 1 of a motor with electromagnetic brake and the control circuit 3. As a result, the attracting force for energizing and releasing the brake is increased gradually, and the braking force of the electromagnetic brake can be decreased gradually, thus it is possible to delay the response time of the brake, thereby restraining it from hunting.
Inventors:
YAMAZAKI KOICHI
Application Number:
JP18106397A
Publication Date:
January 29, 1999
Filing Date:
July 07, 1997
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
B25J19/00; H02P3/16; (IPC1-7): H02P3/16; B25J19/00
Attorney, Agent or Firm:
Tomoyuki Takimoto (1 person outside)