ELEVATOR DOOR OPENING/CLOSING DEVICE AND REPAIR METHOD FOR ELEVATOR DOOR OPENING/CLOSING DEVICE

WIPO Patent Application WO/2016/030944

A1

The present invention is provided with: a first control board (11) that performs feedback control on the basis of the information from an encoder (14) according to a door opening/closing command in order to generate a driving current signal for a motor (12) that opens and closes an elevator door (13); and a second control board (22) interposed between the first control board (11) and the motor (12). The second control board (22) monitors a first driving current signal output from the first control board (11) as a result of the feedback control. Upon determining that the first driving current signal is normal, the second control board (22) outputs the first driving current signal as a driving current signal for controlling the driving of the motor (12). Upon determining that the first driving current signal is abnormal, the second control board (22) generates and outputs a second driving current signal that allows the motor (12) to rotate in the direction corresponding to the door opening/closing command.

JPH06329376	ELEVATOR DOOR CONTROL DEVICE
JPS60248587	CONTROLLER FOR ELEVATOR DOOR
JP6317004	Elevator system

SHIOSAKI HARUNORI (JP)

PCT/JP2014/072156

March 03, 2016

August 25, 2014

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MITSUBISHI ELECTRIC CORP (JP)
MITSUBISHI ELEC BUILDING TECHN (JP)

B66B13/14; B66B7/00

JPH0485279A	1992-03-18
JP2012240792A	2012-12-10
JP2001302156A	2001-10-31
JPH08259154A	1996-10-08

SOGA, Michiharu et al. (JP)
Michiharu Soga (JP)

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