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Title:
COMMUNICATION CONTROL DEVICE FOR VARIABLE SPEED FEED WATER DEVICE
Document Type and Number:
Japanese Patent JP3807763
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To make variable speed feed water control of a plurality of sets of pumps by a single set of control device, and connect between these devices with a very little number of wires.
SOLUTION: A control part 22 and plurality of frequency converters 20, and the control part 22 and a remote controller 23 have respective communication functions capable of performing transceiving of both information or data by a fixed protocol. Connection between the control part 22 and one set of a plurality of the frequency converters 20 and between each frequency converter 20 are made set by set successively by two communication lines 25, the control part 22 supplies power to the remote controller 23 by two power lines 26, and connection between the control part 22 and the remote controller 23 is made by two communication lines 27.


Inventors:
立石 和文
高田 勉
佐藤 元保
Application Number:
JP1995000314685
Publication Date:
August 09, 2006
Filing Date:
November 08, 1995
Export Citation:
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Assignee:
株式会社荏原製作所
株式会社荏原電産
International Classes:
F04B49/06; (IPC1-7): F04B49/06
Domestic Patent References:
JP7224765A
JP6138193A
JP6147605A
JP411437Y2
JP316815B2
JP6165515A
JP6489183A
JP6489182A
JP3221749A
JP7103557A
JP62120153U
Attorney, Agent or Firm:
渡邉 勇
堀田 信太郎