EP2492231A1 - Sicherheitsvorrichtung für einen aufzug - Google Patents

Sicherheitsvorrichtung für einen aufzug Download PDF

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Publication number
EP2492231A1
EP2492231A1 EP09850562A EP09850562A EP2492231A1 EP 2492231 A1 EP2492231 A1 EP 2492231A1 EP 09850562 A EP09850562 A EP 09850562A EP 09850562 A EP09850562 A EP 09850562A EP 2492231 A1 EP2492231 A1 EP 2492231A1
Authority
EP
European Patent Office
Prior art keywords
power source
source relay
relay
arithmetic units
instruction
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.)
Withdrawn
Application number
EP09850562A
Other languages
English (en)
French (fr)
Inventor
Jun Hashimoto
Masunori Shibata
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of EP2492231A1 publication Critical patent/EP2492231A1/de
Withdrawn legal-status Critical Current

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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
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0006—Monitoring devices or performance analysers
    • B66B5/0018—Devices monitoring the operating condition of the elevator system
    • B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
    • 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
    • B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well

Definitions

  • the present invention relates to a safety device for an elevator.
  • the configuration has been made such that an arithmetic unit controls the drive of a relay via a relay driver, and controls power supply to a motor or a brake.
  • an arithmetic unit controls the drive of a relay via a relay driver, and controls power supply to a motor or a brake.
  • the power supply to the motor or the brake sometimes cannot be shut off.
  • Patent Literature 1 International Publication No: WO2008/152722
  • the present invention has been made to solve the above-described problem, and accordingly an object thereof is to provide a safety device for an elevator capable of reliably detecting a failure of each of two relay drivers provided corresponding to a relay for shutting off the power supply to a motor or a brake.
  • a safety device for an elevator of the present invention includes a relay having a function of shutting off the power supply to a motor or a brake for the elevator, a first driver connected in series with the relay, a second driver connected in series with the relay and the first driver, a first arithmetic unit which issues one of a drive instruction for applying a drive voltage to the relay and a shut-off instruction for shutting off the drive voltage to the first driver according to the situation, a second arithmetic unit which issues one of a drive instruction for applying the drive voltage and a shut-off instruction for shutting off the drive voltage to the second driver according to the situation and a contact signal outputting unit which generates a diagnosing contact signal according to the operation of the relay, wherein cooperative operation is carried out so that one of the first and second arithmetic units issues the drive instruction, and also the other of the first and second arithmetic units issues the shut-off instruction and the first and second arithmetic units make a failure diagnosis on the first and second drivers based on the
  • a failure of each of two relay drivers provided corresponding to a relay for shutting off the power supply to a motor or a brake can be detected reliably.
  • Figure 1 is a configuration view showing the whole of an elevator for which a safety device for an elevator in accordance with a first embodiment of the present invention is used.
  • reference sign 1 denotes a motor power source
  • 2 denotes a power converter
  • Reference sign 3 denotes a motor.
  • This motor 3 has a function of rotating due to the power supplied from the motor power source 1 via the power converter 2.
  • Reference sign 4 denotes a sheave. This sheave 4 has a function of rotating in response to the rotation of the motor 3.
  • Reference sign 5 denotes a main rope. This main rope 5 is wound around the sheave 4.
  • Reference sign 6 denotes a car. This car 6 is connected to one end of the main rope 5.
  • Reference sign 7 denotes a counterweight. This counterweight 7 is connected to the other end of the main rope 5.
  • Reference sign 8 denotes a brake power source.
  • Reference sign 9 denotes a brake. This brake 9 has a function of braking the rotation of the motor 3 when the power supplied from the brake power source 8 is shut off.
  • Reference sign 10 denotes a motor power source relay contact.
  • This motor power source relay contact 10 consists of a normally open contact.
  • the motor power source relay contact 10 is provided on a wiring between the motor power source 1 and the power converter 2.
  • Reference sign 11 denotes a brake power source relay contact.
  • This brake power source relay contact 11 consists of a normally open contact.
  • the brake power source relay contact 11 is provided on a wiring between the brake power source 8 and the brake 9.
  • Reference sign 12 denotes an electronic safety device.
  • This electronic safety device 12 has a function of controlling the closing and opening of the motor power source relay contact 10 and the brake power source relay contact 11. Also, the electronic safety device 12 has a function of detecting a state of emergency of the elevator.
  • the motor power source relay contact 10 and the brake power source relay contact 11 are opened by the control of the electronic safety device 12. By the opening of these relay contacts 10 and 11, the power supply to the motor 3 and the brake 9 is shut off. By the braking of the motor 3 that lost its driving force carried out by the brake 9, the car 6 is stopped in emergency. By this emergency stopping, the safety of users in the car 6 can be ensured.
  • Reference sign 13 denotes a motor power source relay.
  • This motor power source relay 13 is arranged on a motor power source relay wiring 14 provided between the power source and the ground.
  • the motor power source relay 13 is used to control the closing and opening of the motor power source relay contact 10. That is, when a drive voltage is applied to the motor power source relay 13, the motor power source relay contact 10 is closed. On the other hand, when the drive voltage applied to the motor power source relay 13 is shut off, the motor power source relay contact 10 is opened.
  • Reference sign 15 denotes a first motor power source relay driver.
  • This first motor power source relay driver 15 consists of a transistor.
  • the first motor power source relay driver 15 is connected in series with the motor power source relay 13 on the motor power source relay wiring 14.
  • Reference sign 16 denotes a second motor power source relay driver.
  • This second motor power source relay driver 16 also consists of a transistor.
  • the second motor power source relay driver 16 is connected in series with the motor power source relay 13 and the first motor power source relay driver 15 on the motor power source relay wiring 14. That is, the first and second motor power source relay drivers 15 and 16 are of a double-system configuration with respect to the motor power source relay 13.
  • Reference sign 17 denotes a brake power source relay.
  • This brake power source relay 17 is arranged on a brake power source relay wiring 18 provided between the power source and the ground.
  • the brake power source relay 17 is used to control the closing and opening of the brake power source relay contact 11. That is, when a drive voltage is applied to the brake power source relay 17, the brake power source relay contact 11 is closed. On the other hand, when the drive voltage applied to the brake power source relay 17 is shut off, the brake power source relay contact 11 is opened.
  • Reference sign 19 denotes a first brake power source relay driver.
  • This first brake power source relay driver 19 consists of a transistor.
  • the first brake power source relay driver 19 is connected in series with the brake power source relay 17 on the brake power source relay wiring 18.
  • Reference sign 20 denotes a second brake power source relay driver.
  • This second brake power source relay driver 20 also consists of a transistor.
  • the second brake power source relay driver 20 is connected in series with the brake power source relay 17 and the first brake power source relay driver 19 on the brake power source relay wiring 18. That is, the first and second brake power source relay drivers 20 are of a double-system configuration with respect to the brake power source relay 17.
  • the control of the drivers 15, 16, 19 and 20 are also carried out by a double-system configuration using a first arithmetic unit 21 and a second arithmetic unit 2.
  • the first arithmetic unit 21 has a function of issuing a control instruction to the first motor power source relay driver 15 and the first brake power source relay driver 19 according to the situation.
  • the second arithmetic unit 22 has a function of issuing a control instruction to the second motor power source relay driver 16 and the second brake power source relay driver 20 according to the situation.
  • the first arithmetic unit 21 has a function of issuing a drive instruction for applying a drive voltage to the motor power source relay 13 to the first motor power source relay driver 15. Also, the first arithmetic unit 21 has a function of issuing a shut-off instruction for shutting off the drive voltage applied to the motor power source relay 13 to the first motor power source relay driver 15. Further, the first arithmetic unit 21 has a function of issuing a drive instruction for applying a drive voltage to the brake power source relay 17 to the first brake power source relay driver 19. In addition, the first arithmetic unit 21 has a function of issuing a shut-off instruction for shutting off the drive voltage applied to the brake power source relay 17 to the first brake power source relay driver 19.
  • the second arithmetic unit 22 has a function of issuing a drive instruction for applying a drive voltage to the motor power source relay 13 to the second motor power source relay driver 16. Also, the second arithmetic unit 22 has a function of issuing a shut-off instruction for shutting off the drive voltage applied to the motor power source relay 13 to the second motor power source relay driver 16. Further, the second arithmetic unit 22 has a function of issuing a drive instruction for applying a drive voltage to the brake power source relay 17 to the second brake power source relay driver 20. In addition, the second arithmetic unit 22 has a function of issuing a shut-off instruction for shutting off the drive voltage applied to the brake power source relay 17 to the second brake power source relay driver 16.
  • Reference sign 23 denotes a motor power source relay diagnosing contact.
  • This motor power source relay diagnosing contact 23 consists of a normally open contact.
  • the motor power source relay diagnosing contact 23 is arranged on a wiring between the power source and the first and second arithmetic units 21 and 22.
  • the motor power source relay diagnosing contact 23 functions as a contact signal outputting unit that generates a normally open contact signal for diagnosis according to the operation of the motor power source relay 13.
  • Reference sign 24 denotes a brake power source relay diagnosing contact.
  • This brake power source relay diagnosing contact 24 consists of a normally open contact.
  • the brake power source relay diagnosing contact 24 is arranged on a wiring between the power source and the first and second arithmetic units 21 and 22.
  • the brake power source relay diagnosing contact 24 functions as a contact signal outputting unit that generates a normally open contact signal for diagnosis according to the operation of the brake power source relay 17.
  • the electronic safety device 12 configured as described above, various signals showing the operation state of elevator, such as the stopping state of the car 6, are inputted.
  • the electronic safety device 12 is configured so that, when the car 6 stops during the ordinary operation of elevator, the first and second arithmetic units 21 and 22 perform cooperative operation to make a self-diagnosis on a failure of the relay drivers 15, 16, 19 and 20.
  • one of the first and second arithmetic units 21 and 22 issues a drive instruction to the corresponding driver.
  • the other of the first and second arithmetic units 21 and 22 issues a shut-off instruction to the corresponding driver.
  • the first and second arithmetic units 21 and 22 are configured so as to monitor the output state of the diagnosing contact signal sent via the diagnosing contacts 23 and 24 and to make a diagnosis on a failure of the relay drivers 15, 16, 19 and 20.
  • the method for failure diagnosis on the first and second motor power source relay drivers 15 and 16 and the first and second brake power source relay drivers 19 and 20 is explained specifically.
  • the failure diagnosis on the first and second motor power source relay drivers 15 and 16 and the failure diagnosis on the first and second brake power source relay drivers 19 and 20 are carried out by the same method.
  • the method for failure diagnosis on the first and second motor power source relay drivers 15 and 16 is explained with reference to Figures 2 and 3 .
  • Figure 2 is a diagram for explaining a failure diagnosis procedure at the time when the motor power source relay diagnosing contact of the safety device for an elevator in accordance with the first embodiment of the present invention is closed.
  • Figure 3 is a diagram for explaining a failure diagnosis procedure at the time when the motor power source relay diagnosing contact of the safety device for an elevator in accordance with the first embodiment of the present invention is open.
  • reference sign 25 denotes a control instruction given to the first motor power source relay driver 15.
  • the first arithmetic unit 21 issues a Hi-level signal as a drive instruction to the control terminal of the first motor power source relay driver 15.
  • the first arithmetic unit 21 issues a Low-level signal as a shut-off instruction to the control terminal of the first motor power source relay driver 15.
  • Reference sign 26 denotes a control instruction given to the second motor power source relay driver 16. Specifically, the second arithmetic unit 22 issues a Hi-level signal as a drive instruction to the control terminal of the second motor power source relay driver 16. On the other hand, the second arithmetic unit 22 issues a Low-level signal as a shut-off instruction to the control terminal of the second motor power source relay driver 16.
  • Reference sign 27 denotes a signal state of the motor power source relay diagnosing contact 23. Specifically, when the motor power source relay diagnosing contact 23 is closed, the Hi-level signal is inputted to the first and second arithmetic units 21 and 22. On the other hand, when the motor power source relay diagnosing contact 23 is open, the Low-level signal is inputted to the first and second arithmetic units 21 and 22.
  • both of the first and second arithmetic units 21 and 22 issue drive instructions as the control instructions 25 and 26.
  • both of the first and second motor power source relay drivers 15 and 16 are in an ON state, a drive voltage is applied to the motor power source relay 13.
  • the signal state 27 of the motor power source relay diagnosing contact 23 is a closed state.
  • the first arithmetic unit 21 issues a shut-off instruction as the control instruction 25, and also the second arithmetic unit 22 keeps the issue of a drive instruction as the control instruction 26.
  • the signal state 27 of the motor power source relay diagnosing contact 23 becomes an open state before preset fixed time has elapsed.
  • the first and second arithmetic units 21 and 22 determine that the first motor power source driver 15 has become in an OFF state in response to the shut-off instruction, and determine that a short-circuit abnormality has not occurred.
  • the first arithmetic unit 21 issues a drive instruction as the control instruction 25, and also the second arithmetic unit 22 issues a shut-off instruction as the control instruction 26.
  • the signal state 27 of the motor power source relay diagnosing contact 23 is kept the open state.
  • the first and second arithmetic units 21 and 22 determine that the second motor power source driver 16 does not respond to the shut-off instruction and keeps in the ON state, and determine that a short-circuit abnormality has occurred.
  • both of the first and second arithmetic units 21 and 22 issue shut-off instructions as the control instructions 25 and 26.
  • the first and second motor power source relay drivers 15 and 16 are in an OFF state, the drive voltage applied to the motor power source relay 13 is shut off.
  • the signal state 27 of the motor power source relay diagnosing contact 23 is the open state.
  • the first arithmetic unit 21 keeps the issue of a shut-off instruction as the control instruction 25, and also the second arithmetic unit 22 issues a drive instruction as the control instruction 26.
  • the signal state 27 of the motor power source relay diagnosing contact 23 is kept the open state.
  • the first and second arithmetic units 21 and 22 determine that the first motor power source driver 15 has become in the OFF state in response to the shut-off instruction, and determine that a short-circuit abnormality has not occurred.
  • the first arithmetic unit 21 issues a drive instruction as the control instruction 25, and also the second arithmetic unit 22 issues a shut-off instruction as the control instruction 26.
  • the signal state 27 of the motor power source relay diagnosing contact 23 becomes the open state within the preset fixed time.
  • the first and second arithmetic units 21 and 22 determine that the second motor power source driver 16 does not respond to the shut-off instruction and keeps in the ON state, and determine that a short-circuit abnormality has occurred.
  • cooperative operation is carried out so that one of the first and second arithmetic units 21 and 22 issues the drive instruction, and also the other of the first and second arithmetic units 21 and 22 issues the shut-off instruction.
  • the first and second arithmetic units 21 and 22 make a failure diagnosis on each of the drivers 15, etc. based on the signal state of the diagnosing contacts 23 and 24 during the cooperative operation.
  • the normally open contact signal has been inputted to the first and second arithmetic units 21 and 22, in the case where the input of the normally open contact signal continues even when the preset fixed time has elapsed after the cooperative operation was carried out, it is determined that the driver corresponding to the other of the first and second arithmetic units 21 and 22 is abnormal. Also, when the normally open contact signal has not been inputted, in the case where the normally open contact signal is inputted after the cooperative operation has been carried out and before the preset fixed time has elapsed, it is determined that the driver corresponding to one of the first and second arithmetic units 21 and 22 is abnormal.
  • the first and second arithmetic units 21 and 22 make the failure diagnosis on each of the relay drivers 15, etc. when the car 6 stops. Therefore, the failure diagnosis on each of the relay drivers 15, etc. can be carried out without a hindrance to the operation of elevator.
  • the safety device for an elevator in accordance with the present invention can be used for an elevator in which the power supply to a motor or a brake is shut off in emergency.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
  • Control Of Electric Motors In General (AREA)
EP09850562A 2009-10-20 2009-10-20 Sicherheitsvorrichtung für einen aufzug Withdrawn EP2492231A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2009/068056 WO2011048664A1 (ja) 2009-10-20 2009-10-20 エレベータの安全装置

Publications (1)

Publication Number Publication Date
EP2492231A1 true EP2492231A1 (de) 2012-08-29

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ID=43899915

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09850562A Withdrawn EP2492231A1 (de) 2009-10-20 2009-10-20 Sicherheitsvorrichtung für einen aufzug

Country Status (5)

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EP (1) EP2492231A1 (de)
JP (1) JPWO2011048664A1 (de)
KR (1) KR20120042991A (de)
CN (1) CN102574662A (de)
WO (1) WO2011048664A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2899871A4 (de) * 2012-09-21 2016-08-03 Fuji Electric Co Ltd Elektromagnetische bremssteuerungsvorrichtung

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5816102B2 (ja) * 2012-01-12 2015-11-18 株式会社日立製作所 電子安全エレベータ
WO2018087803A1 (ja) * 2016-11-08 2018-05-17 株式会社日立製作所 エレベーター制御装置、制御方法及びエレベーター
CN113677611B (zh) * 2019-03-29 2023-07-04 因温特奥股份公司 用于中断电梯设备的由供电装置供电的驱动机的扭矩生成的安全扭矩切断装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004076326A1 (ja) * 2003-02-25 2004-09-10 Mitsubishi Denki Kabushiki Kaisha エレベーター用調速器
FI20031647A0 (fi) * 2003-11-12 2003-11-12 Kone Corp Hissin jarrun ohjauspiiri
CN101268003B (zh) * 2006-07-27 2010-08-18 三菱电机株式会社 电梯装置
EP2163502B2 (de) * 2007-06-14 2018-02-21 Mitsubishi Electric Corporation Aufzug mit einem Halbleiterschalter für Bremskontrolle
JP2009023820A (ja) * 2007-07-23 2009-02-05 Toshiba Elevator Co Ltd エレベータの安全監視システム

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011048664A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2899871A4 (de) * 2012-09-21 2016-08-03 Fuji Electric Co Ltd Elektromagnetische bremssteuerungsvorrichtung

Also Published As

Publication number Publication date
CN102574662A (zh) 2012-07-11
JPWO2011048664A1 (ja) 2013-03-07
WO2011048664A1 (ja) 2011-04-28
KR20120042991A (ko) 2012-05-03

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