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Patent Searching and Data


Title:
DOOR CONTROL DEVICE OF ELEVATOR
Document Type and Number:
Japanese Patent JPH0459587
Kind Code:
A
Abstract:

PURPOSE: To prevent various inconvenience depending on a self-propelling condi tion of a door by applying a necessary electric energy from a battery power source to a control/driving member when it is detected that a feeding voltage is less than a standard value.

CONSTITUTION: When a power source cutting detector 32 detects that the feeding voltage is less than a specific standard value by a cutting of power source from a normal power feeding condition, the output signal responding to the detection of the abnormal condition is added to the speed instruction generator 22 in a microcomputer 31. And, corresponding to that, the speed of the door of an elevator is reduced depending on a speed instruction output from the speed instruction generator 22. In this case, the power feeding to an inverter control circuit 17 is made by passing through a DC-DC converter 33. As a result, various inconveniences depending on the self-propelling condition generated by the inertia of the door itself of the elevator, when an abnormal condition is generated in the power source, can be prevented securely.


Inventors:
MIZUNO KIMIMOTO
HIRABAYASHI TERUMI
TAWADA MASANORI
KODERA TOSHIYUKI
Application Number:
JP16988990A
Publication Date:
February 26, 1992
Filing Date:
June 29, 1990
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
B66B5/02; B66B13/14; (IPC1-7): B66B5/02; B66B13/14
Attorney, Agent or Firm:
Mitsuteru Soga (5 people outside)