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Title:
LIFT CONTROL DEVICE FOR LIFT TYPE LIGHTING SYSTEM
Document Type and Number:
Japanese Patent JPH07296625
Kind Code:
A
Abstract:

PURPOSE: To provide a lift control device capable of stopping a luminaire in a prescribed stop position, even when stopped lowering down in the halfway and restarted, by providing a specific constitution, in the captioned lift control device liftably suspending the luminaire with a wire.

CONSTITUTION: A device comprises a lift changeover switch 2 arranged in a power supply circuit between an AC power supply 1 and an electric motor M winding a wire, relay 4 interrupting the power supply circuit and a control circuit connected to the switch 2 and the relay 4 through an interface 5. The control circuit comprises a counter control means 7 actuated by a signal output from the interface 5, pulse generating device 6, up/down counter 8 counting a pulse from the pulse generating device 6 in accordance with a direction of the counter control means 7, setting switch 9 setting a position of lowering down a luminaire and a comparator 10 outputting a stop signal for actuating the relay 4 when conformed values between the up/down counter 8 and the setting switch 9.


Inventors:
TAKANO YUUJIROU
Application Number:
JP11167294A
Publication Date:
November 10, 1995
Filing Date:
April 28, 1994
Export Citation:
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Assignee:
IWASAKI ELECTRIC CO LTD
International Classes:
B66D1/46; B66D1/50; F21V21/36; (IPC1-7): F21V21/36; B66D1/46; B66D1/50
Attorney, Agent or Firm:
Toyama Saburo



 
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