EP2514703B1 - Elevator device - Google Patents

Elevator device Download PDF

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Publication number
EP2514703B1
EP2514703B1 EP09852262.6A EP09852262A EP2514703B1 EP 2514703 B1 EP2514703 B1 EP 2514703B1 EP 09852262 A EP09852262 A EP 09852262A EP 2514703 B1 EP2514703 B1 EP 2514703B1
Authority
EP
European Patent Office
Prior art keywords
control device
signal
control signal
brake
driver
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP09852262.6A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2514703A1 (en
EP2514703A4 (en
Inventor
Jun Hashimoto
Masunori Shibata
Hideaki Marumo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of EP2514703A1 publication Critical patent/EP2514703A1/en
Publication of EP2514703A4 publication Critical patent/EP2514703A4/en
Application granted granted Critical
Publication of EP2514703B1 publication Critical patent/EP2514703B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/24—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration
    • B66B1/28—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical
    • B66B1/32—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical effective on braking devices, e.g. acting on electrically controlled brakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/027—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions to permit passengers to leave an elevator car in case of failure, e.g. moving the car to a reference floor or unlocking the door

Definitions

  • the present invention relates to an elevator apparatus.
  • a conventional elevator apparatus controls a motor power supply relay or a brake power supply relay using a brake control device without following a command from an elevator control device in an emergency stop.
  • the brake control device can control the motor power supply relay or the like to move a car to an evacuation floor or the like (for example, see Parent Literature 1).
  • Document EP1852382A1 shows an elevator apparatus according the preamble of claim 1.
  • Patent Literature 1 International Publication No. WO 2007/060733
  • Patent Literature 1 when the brake control device fails and cannot control the motor power supply relay or the brake power supply relay, the car cannot be moved to the evacuation floor or the like. Thus, a user may be trapped in the car in an emergency stop.
  • the present invention is achieved in view of the above problem, and has an object to provide an elevator apparatus that can control a motor power supply relay or the like even if a brake control device fails.
  • An elevator apparatus of the present invention includes a relay having a function of blocking supply of electric power to a motor or a brake of an elevator, a driver that drives the relay, an operation control device that outputs a control signal to the driver, a brake control device that outputs a control signal according to the control signal output from the operation control device in normal time, and outputs a control signal independent of the control signal output from the operation control device in an emergency stop of the elevator and a switching device that receives as an input the control signal output from the operation control device and the control signal output from the brake control device, and that switches the control signal to be output to the driver from the control signal output from the brake control device to the control signal output from the operation control device when the brake control device fails.
  • a motor power supply relay or the like can be controlled even if a brake control device fails.
  • Figure 1 is a configuration diagram of an elevator apparatus according to Embodiment 1.
  • reference numeral 1 denotes a motor power supply.
  • Reference numeral 2 denotes a power conversion device.
  • Reference numeral 3 denotes a motor. The motor 3 is rotated by electric power supplied from the motor power supply 1 via the power conversion device 2.
  • Reference numeral 4 denotes a sheave.
  • the sheave 4 is rotated with rotation of the motor 3.
  • Reference numeral 5 denotes a main rope.
  • the main rope 5 is wound around the sheave 4.
  • Reference numeral 6 denotes a car.
  • the car 6 is connected to one end of the main rope 5.
  • Reference numeral 7 denotes a counterweight.
  • the counterweight 7 is connected to the other end of the main rope 5.
  • Reference numeral 8 is a brake power supply.
  • Reference numeral 9 is a brake coil.
  • Reference numeral 10 is a brake shoe. The brake shoe 10 provides a braking force to the motor 3 on the basis of a biasing force of a spring (not shown) and an electromagnetic force generated by a current flowing through the brake coil 9.
  • Reference numeral 11 is a motor power supply relay contact.
  • the motor power supply relay contact 11 is constituted by a normally open contact.
  • the motor power supply relay contact 11 is provided on a wire between the motor power supply 1 and the power conversion device 2.
  • Reference numeral 12 denotes a brake power supply relay contact.
  • the brake power supply contact 12 is constituted by a normally open contact.
  • the brake power supply contact 12 is provided on a brake coil wire between the brake coil 9 and the ground.
  • Reference numeral 13 denotes a relay power supply.
  • Reference numeral 14 denotes a motor power supply relay coil.
  • the motor power supply relay coil 14 is placed on a motor power supply relay wire of the relay power supply 13.
  • the motor power supply relay coil 14 controls closing and opening of the motor power supply relay contact 11.
  • Reference numeral 15 denotes a brake power supply relay coil.
  • the brake power supply relay coil 15 is placed on a brake power supply relay wire between the relay power supply 13 and the ground.
  • the brake power supply relay coil 15 controls closing and opening of the brake power supply relay contact 12.
  • Reference numeral 16 denotes a motor power supply relay driver.
  • the motor power supply relay driver 16 is constituted by a transistor.
  • the motor power supply relay driver 16 is connected in series to the motor power supply relay coil 14 on the motor power supply relay wire.
  • Reference numeral 17 denotes a brake power supply relay driver.
  • the brake power supply relay driver 17 is constituted by a transistor.
  • the brake power supply relay driver 17 is connected in series to the brake power supply relay coil 15 on the brake power supply relay wire.
  • Reference numeral 18 denotes a brake coil current control driver.
  • the brake coil current control driver 18 is constituted by a transistor.
  • the brake coil current control driver 18 is connected in series to the brake coil 9 and the brake power supply relay contact 12 on the brake coil wire.
  • Reference numeral 19 denotes an operation control device.
  • the operation control device 19 controls an operation of the elevator.
  • the operation control device 19 outputs a control signal AA to the drivers 16 to 18.
  • Reference numeral 20 denotes a brake control device. To the brake control device 20, the control signal AA is input from the operation control device 19. The brake control device 20 outputs a control signal BB to the drivers 16 to 18 according to the control signal AA in normal time.
  • the brake control device 20 does not follow the control signal AA from the operation control device 19, but independently outputs the control signal BB to the drivers 16 to 18.
  • the brake control device 20 outputs a failure detection signal CC when detecting its failure by a self-diagnosis function.
  • the failure detection signal CC is input to a switching device 21.
  • the control signal AA is directly input to the switching device 21 without via the brake control device 20.
  • a configuration of the switching device 21 will be specifically described below.
  • the switching device 21 includes a signal switching circuit 22, a signal blocking timer 23, and a signal blocking circuit 24. To the signal switching circuit 22, the control signal AA, the control signal BB, and the failure detection signal CC are input.
  • the signal switching circuit 22 outputs a control signal DD to the motor power supply relay driver 16, a control signal EE to the brake power supply relay driver 17, and a control signal FF to the brake coil current control driver 18.
  • the failure detection signal CC is input.
  • the signal blocking timer 23 outputs a blocking command GG after a lapse of a preset certain time from the input of the failure detection signal CC.
  • the control signals DD, EE and FF and the blocking command GG are input.
  • the brake control device 20 outputs the control signal BB according to the control signal AA of the operation control device 19 in normal time.
  • the signal switching circuit 22 outputs the control signals DD, EE and FF according to the control signal BB.
  • the control signals DD, EE and FF are input to the signal blocking circuit 24.
  • the signal blocking circuit 24 transmits the control signals DD, EE and FF to control terminals of the drivers 16 to 18. Then, the drivers 16 to 18 are respectively operated according to the control signals DD, EE and FF. According to these operations, supply of electric power to the motor 3 and the brake coil 9 is controlled.
  • the brake control device 20 does not follow the control signal AA of the operation control device 19, but independently outputs the control signal BB for controlling reduction of deceleration of the elevator. Then, the signal switching circuit 22 outputs the control signals DD, EE and FF according to the independent control signal BB.
  • the control signals DD, EE and FF are input to the signal blocking circuit 24.
  • the signal blocking circuit 24 transmits the control signals DD, EE and FF to the control terminals of the drivers 16 to 18, respectively.
  • the drivers 16 to 18 are respectively operated according to the control signals DD, EE and FF. According to these operations, the supply of electric power to the motor 3 and the brake coil 9 is controlled. According to the operations of the motor 3 and the brake shoe 10, the reduction of deceleration of the elevator is controlled.
  • the signal switching circuit 22 switches the control signals DD, EE and FF to be output to the signal blocking circuit 24 to those according to the control signal AA.
  • the operation control device 19 outputs the control signal AA for moving the car 6 to a predetermined evacuation floor within a certain time from the input of the failure detection signal CC.
  • the signal switching circuit 22 outputs the control signals DD, EE and FF.
  • the control signals DD, EE and FF are input to the signal blocking circuit 24.
  • the signal blocking circuit 24 transmits the control signals DD, EE and FF to the control terminals of the drivers 16 to 18, respectively.
  • the drivers 16 to 18 are respectively operated according to the control signals DD, EE and FF. According to these operations, the supply of electric power to the motor 3 and the brake coil 9 is controlled, According to the operations of the motor 3 and the brake shoe 10, the car 6 is moved to the predetermined evacuation floor.
  • the signal blocking timer 23 After a certain time has elapsed from the failure of the brake control device 20, the signal blocking timer 23 outputs the blocking command GG.
  • the signal blocking circuit 24 blocks the transmission of the control signals DD, EE and FF when the blocking command GG is input. Thus, the supply of electric power to the motor power supply relay coil 14 and the brake power supply relay coil 15 is blocked, and application of a voltage to the brake coil 9 is stopped. Specifically, a stopping state of use of the elevator is maintained.
  • the switching device 21 switches the control signal to be output to the drivers 16 to 18 from the control signal BB output from the brake control device 20 to the control signal AA output from the operation control device 19.
  • the supply of electric power to the motor power supply relay coil 14 or the like can be controlled to prevent a user from being trapped in the car.
  • the switching device 21 blocks the transmission of the control signals DD, EE and FF to the drivers 16 to 18 after a lapse of a certain time from the input of the failure detection signal CC.
  • the signal blocking circuit 24 blocks the transmission of the control signals DD, EE and FF to the drivers 16 to 18 when the blocking command GG is input.
  • the use of the elevator can be stopped. This can prevent accidental use of the elevator during the failure of the brake control device 20.
  • FIG. 2 is a configuration diagram of an elevator apparatus according to Embodiment 2.
  • the same or corresponding parts as or to those in Embodiment 1 are denoted by the same reference numerals, and descriptions thereof will be omitted.
  • Embodiment 1 After a lapse of a certain time from the failure of the brake control device 20, the transmission of the control signals DD, EE and FF is blocked. On the other hand, in Embodiment 2, when a brake control device 20 seriously fails, transmission of control signals DD, EE and FF is immediately blocked. In Embodiment 2, soundness of a signal blocking timer 23 is diagnosed. Embodiment 2 will be now described in detail.
  • a brake control device 20 outputs a serious failure detection signal HH when detecting a more serious failure than that in output of a failure detection signal CC by a self-diagnosis function.
  • the serious failure detection signal HH is input to a signal blocking circuit 24, the signal blocking circuit 24 immediately blocks transmission of the control signals DD, EE and FF.
  • a motor power supply relay diagnostic contact 25 and a brake power supply relay diagnostic contact 26 are provided.
  • the contacts 25 and 26 are constituted by normally closed contacts.
  • Contact signals II and JJ thereof are input to the brake control device 20.
  • the brake control device 20 detects operation states of a motor power supply relay coil 14 and a brake power supply coil 15.
  • the signal blocking circuit 24 sets a blocking flag KK when blocking the transmission of the control signals DD, EE and FF.
  • the blocking flag KK is input to the brake control device 20.
  • the brake control device 20 detects an operation state of the signal blocking circuit 24.
  • the brake control device 20 outputs a false failure detection signal CC during outputting a control signal BB for driving the relay coils 14 and 15 to the motor power supply relay driver 16 and the brake power supply relay driver 17.
  • the brake control device 20 diagnoses that the signal blocking timer 23 is sound.
  • the brake control device 20 outputs a false serious failure detection signal HH during outputting the control signal BB for driving the relay coils 14 and 15 to the motor power supply relay driver 16 and the brake power supply relay driver 17.
  • the brake control device 20 diagnoses that the signal blocking timer 23 is sound when confirming that the blocking flag KK is input before a lapse of a certain time from the output of the failure detection signal HH, and also confirming the input of the contact signals II and JJ of the diagnostic contacts 25 and 26.
  • the brake control device 20 outputs the false failure detection signal CC and the false serious failure detection signal HH during outputting the control signal BB to the motor power supply relay driver 16 and the brake power supply relay driver 17 to diagnose soundness of the signal blocking timer 23.
  • the failure of the signal blocking timer 23 does not block the output of the control signals DD and EE when the brake control device 20 actually fails.
  • the elevator apparatus can be used for an elevator for controlling the motor power supply relay or the brake power supply relay using the brake control device without following a command from an elevator control device in an emergency stop.

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Elevator Control (AREA)
EP09852262.6A 2009-12-15 2009-12-15 Elevator device Active EP2514703B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2009/070890 WO2011074068A1 (ja) 2009-12-15 2009-12-15 エレベータ装置

Publications (3)

Publication Number Publication Date
EP2514703A1 EP2514703A1 (en) 2012-10-24
EP2514703A4 EP2514703A4 (en) 2017-09-13
EP2514703B1 true EP2514703B1 (en) 2018-09-05

Family

ID=44166865

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09852262.6A Active EP2514703B1 (en) 2009-12-15 2009-12-15 Elevator device

Country Status (5)

Country Link
EP (1) EP2514703B1 (ja)
JP (1) JP5360231B2 (ja)
KR (1) KR101338843B1 (ja)
CN (1) CN102712444B (ja)
WO (1) WO2011074068A1 (ja)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2012297033B2 (en) * 2011-08-16 2017-06-29 Inventio Ag Triggering of a lift brake in an emergency situation
CN106132858B (zh) * 2014-04-03 2018-01-30 三菱电机株式会社 电梯控制装置
DE112015005972B4 (de) * 2015-01-16 2021-12-02 Mitsubishi Electric Corporation Aufzugsicherheits-steuervorrichtung und aufzugsicherheits-sicherheits-steuerverfahren
EP3331793A1 (en) 2015-08-07 2018-06-13 Otis Elevator Company Rescue control and method of operating an elevator system including a permanent magnet (pm) synchronous motor drive system
US11078049B2 (en) 2015-08-07 2021-08-03 Otis Elevator Company Elevator system including a permanent magnet (PM) synchronous motor drive system

Family Cites Families (13)

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Publication number Priority date Publication date Assignee Title
JPH06239542A (ja) * 1993-02-18 1994-08-30 Hitachi Ltd エレベーター装置
JP2002037545A (ja) * 2000-07-26 2002-02-06 Matsushita Electric Works Ltd エレベータのブレーキ制御回路
JP4273677B2 (ja) * 2001-04-20 2009-06-03 株式会社日立製作所 エレベーター装置
JP4757863B2 (ja) * 2005-02-25 2011-08-24 三菱電機株式会社 エレベータ装置
JP4689337B2 (ja) * 2005-04-26 2011-05-25 三菱電機株式会社 エレベータ装置
CN101312898B (zh) * 2005-11-25 2012-03-07 三菱电机株式会社 电梯的紧急停止系统
EP1990305B1 (en) * 2006-03-02 2014-04-30 Mitsubishi Electric Corporation Elevator device
EP1997764B2 (en) * 2006-03-17 2022-06-29 Mitsubishi Electric Corporation Elevator device
EP2048104B1 (en) * 2006-07-27 2014-08-20 Mitsubishi Electric Corporation Elevator device
KR101080566B1 (ko) * 2006-12-05 2011-11-04 미쓰비시덴키 가부시키가이샤 엘리베이터 장치
FI120088B (fi) * 2007-03-01 2009-06-30 Kone Corp Järjestely ja menetelmä turvapiirin valvomiseksi
CN101910041B (zh) * 2008-02-28 2014-02-26 三菱电机株式会社 电梯装置
CN102036898B (zh) * 2008-06-27 2013-05-01 三菱电机株式会社 电梯装置及其运转方法

Non-Patent Citations (1)

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Title
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Also Published As

Publication number Publication date
EP2514703A1 (en) 2012-10-24
KR101338843B1 (ko) 2013-12-06
JPWO2011074068A1 (ja) 2013-04-25
KR20120049293A (ko) 2012-05-16
WO2011074068A1 (ja) 2011-06-23
EP2514703A4 (en) 2017-09-13
CN102712444A (zh) 2012-10-03
JP5360231B2 (ja) 2013-12-04
CN102712444B (zh) 2014-10-29

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