EP3083478A1 - Safety system for an elevator system - Google Patents
Safety system for an elevator systemInfo
- Publication number
- EP3083478A1 EP3083478A1 EP14800041.7A EP14800041A EP3083478A1 EP 3083478 A1 EP3083478 A1 EP 3083478A1 EP 14800041 A EP14800041 A EP 14800041A EP 3083478 A1 EP3083478 A1 EP 3083478A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- control unit
- safety circuit
- switching contact
- switching
- 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.)
- Granted
Links
- 238000012360 testing method Methods 0.000 claims abstract description 22
- 238000012423 maintenance Methods 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000009434 installation Methods 0.000 claims description 15
- 238000013500 data storage Methods 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 230000006266 hibernation Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000005055 memory storage Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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
- B66B5/0087—Devices facilitating maintenance, repair or inspection tasks
- B66B5/0093—Testing of safety devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
- B66B13/22—Operation of door or gate contacts
Definitions
- the invention relates to a security system and an elevator system with this
- Safety circuit includes. This consists of several series-connected switching contacts of different safety elements for shaft, door and rope monitoring. The opening 0 of one of these switch contacts causes the entire safety circuit to be interrupted.
- a security system for an elevator installation comprises a safety circuit having a plurality of switching contacts and a control unit. At least one first switching contact is electronically switchable and can be bridged by using a conductive bridging element, in particular for maintenance or test purposes.
- the control unit is directly or indirectly connected to the safety circuit. The first switching contact is Switchable due to an instruction of the control unit to achieve a state change of the safety circuit. In this case, the control unit is set up, the absence of the
- Switching contact is bridged by the bridging element.
- bridging element is here to be understood a conductive element for temporary bridging a switch contact.
- a previously bridged first switching contact can be opened in a test, for example, and with the bridging element removed, the safety circuit can be detected as expected, the interruption of the safety circuit.
- the test can be done once a day.
- An electronically switchable switching contact is to be understood here as a switching contact which can be switched by an electronic processing unit, such as the aforementioned control unit. For this purpose, a signal is transmitted from the arithmetic unit to the switching contact.
- the switching contact itself may itself be designed as an electronic component in the form of an analog switch or a semiconductor switch, such as field effect transistors, bipolar transistors, switching diodes, thyristors or the like.
- a switching contact may also be designed electromechanically, such as a relay, contactor or the like.
- the control unit is understood to be a unit having at least one processor which can output at least switching commands to an electronically switchable switching contact.
- the control unit also includes a data storage unit and a memory storage unit.
- the control unit is designed as the main control of the elevator installation.
- the control unit may also be designed as a separate safety control unit.
- operation of the elevator installation is interruptible by the control unit if, due to the instruction of the control unit, to switch the first switch contact, none
- the lift system can only be put into operation when the
- Bridging element has been removed and a switching of the first switching contact has an influence on the state of the safety circuit or an opening of the first switch can cause an interruption of the safety circuit.
- the safety circuit has at least one second electronically switchable switching contact, wherein the second switching contact of the control unit is switchable, if due to the instruction of the control unit to switch the first switching contact, no change in state of the safety circuit is detected.
- Switching contact of the safety circuit can be interrupted. Accordingly, the supply of a drive and / or the main control of the elevator system is interrupted and the elevator system brought into a state of rest.
- control unit itself can bring into a safety mode in which the control unit no longer execute travel commands and / or none
- an error signal is on a data storage unit, preferably one
- Data storage unit of the control unit storable, if due to the instruction of the control unit to switch the first switching contact, no change in state of the safety circuit is detected.
- An error signal is a signal that reflects a negative test result.
- the control unit expects a change of state in the switching operation of the first switching contact Safety circuit. If no change of state can be detected in the safety circuit, the control unit evaluates the test as negative and saves in accordance with this result
- the error signal may also include characteristic information about the first switching contact that has been switched.
- characteristic information carries, for example, a unique value assignable to the first switching contact.
- the first switching contact is uniquely identifiable.
- the first switching contact is switchable after the instruction by the control unit after a predetermined period of time, wherein the time period is at least 1 ms, preferably not longer than 30 s and more preferably between 500 ms and 10 s.
- the period of time must be sufficiently long that a voltage drop or current interruption in the safety circuit is reliably detectable and depends primarily on the
- Time span also be less than 1 ms. Similarly, the period for the downshift should not last too long, so as not to unnecessarily delay the operation of the elevator system.
- the switch-back is preferably carried out autonomously by the first switching contact.
- the first switching contact has a reset unit. This reset unit is as
- the security system comprises a further control unit, which with the
- This further control unit is in particular one
- the further control unit is designed so that it switches the first switching contact on the basis of an instruction of the control unit.
- Trigger switching contact In this embodiment, the re-dividing not only due to a Abiaufens the predetermined period, but also due to a
- the further control unit are preferably an overspeed scarf t token or a limit switch assigned that interrupt the safety circuit in the case of an overspeed or crossing an allowable end position in the shaft.
- the overspeed switch contact and the limit switch contact may be preferred as the first
- Both information, cabin speed and cabin position may refer to the further control unit via the hoistway information system. Based on this information, the further control unit decides whether a condition for the switching back of the at least one first switching contact is fulfilled and switches back the respective first switching contact upon fulfillment of the condition.
- the first electronically switchable switching contact may be assigned its own further control unit.
- Another aspect of the invention relates to an elevator installation with the safety circuit described above.
- the invention also relates to a method for checking the safety system of an elevator installation, comprising the steps:
- Safety circuit using a control unit to achieve a state change of the safety circuit
- Control unit when the first switching contact is bridged by a bridging element.
- a further step relates to the interruption of the operation of the elevator installation by the control unit upon detection of the absence of the state change of the safety circuit. Accordingly, a bridging element can still be inserted and the first switching contact bridged.
- a further step involves switching a second electronically switchable switch contact using an instruction from the control unit to interrupt the operation of the elevator installation upon detection of the change of state of the elevator
- another step relates to storing an error signal on one
- Data storage unit preferably a data storage unit of the control unit, upon detection of the
- a still further step relates to the switching back, in particular the autonomous switching back of the first switched switch contact after a predetermined period of time, the time period is at least 1 ms, preferably not longer than 30s takes and more preferably between 500 ms and 10 s.
- a last step preferably involves the switching of the first switching contact using an instruction of another control unit, which in particular has a
- Shaft information system is assigned. Optionally, this is the switching back of the first
- FIG. 2 schematically shows a circuit diagram of the inventive safety system
- FIG. 1 shows a safety system comprising a safety circuit 1 with a plurality of switching contacts 10.1, 10.2, 1 1, 12.1, 12.2, which are connected in series.
- the switching contacts 10.1, 10.2, 12.1, 12.2 monitor a state of a safety-relevant component of the
- Elevator such as a shaft door, a car door, a
- the safety circuit 1 comprises five switching contacts 10.1, 10.2, 11, 12.1, 12.2. Needless to say, the number of switching contacts in the safety circuit 1 is variable and depends on the number of safety-relevant components to be monitored. The safety circuit 1 is then in a safe state when all the switching contacts 10.1, 10.2, 1 1, 12.1, 12.2 are closed.
- the safety circuit 1 is powered, for example, by a 24V source. In a safe state of the safety circuit 1 flows a corresponding current through the switch contacts 10.1, 10.2, 1 1, 12.1, 12.2.
- a contactor 13 is connected to selbigem and with a 0V conductor at the end of the safety circuit 1.
- the contactor 13 comprises a switching magnet 13.1 and a switch 13.2, the latter being integrated in a feed supply 20 of a main drive 21.
- the solenoid 13.1 switches according to a scarf tShs the safety circuit 1 the associated switch 13.2.
- the energized solenoid 13.1 holds the switch 13.2 closed.
- the safety circuit 1 is connected to a control unit 30, preferably the main control unit of the elevator installation.
- the control unit 30 can recognize on the one hand via the line 31, the state of the safety circuit 1 and on the other hand control signals for switching the
- Switching contacts 10.1, 10.2, 11 is shown in Figures 1 and 2 with dashed lines.
- the two switching contacts 10.1, 10.2 are switched by the control unit 30 in an open state. If the two bridging elements 14.1, 14.2 have been removed, this opening causes an interruption of the safety circuit 1. This interruption can be recognized by the control unit 30. Accordingly, the expectation of the control unit 30 has been met and the elevator system can be safely operated in the normal mode.
- the switch contacts 10.1, 10.2 are opened in a predetermined order to individually test each switch contact 10.1, 10.2.
- an error signal can be stored in a data storage unit of the control unit 30.
- the error signal includes characteristic information, in particular a unique address, about the one or more
- the two switching contacts 10.1, 10.2 are after a predetermined period of time
- the time span is at least 1 ms and preferably at most 30 s.
- a particularly preferred duration of this period is 500 ms to 10 s.
- the switching contacts 10.1, 10.2 comprise a
- Such a reset unit is preferably designed as a time relay or monoflop.
- the reset unit is adjustable over a certain period of time. After expiration of this time period, the reset unit triggers the switching back of the associated switch contact 10.1, 10.2.
- the safety circuit 1 can also have additional switching contacts 12.1, 12.2 which can not be switched by means of a control unit 30.
- additional switching contacts 12.1, 12.2 Preferably, such non-switchable switching contacts 12.1, 12.2 need not be bypassed during maintenance.
- These switch contacts 12.1, 12.2 monitor, for example, the state of manhole or cabin doors and of an emergency switch.
- the safety circuit 1 is designed so that, in the context of maintenance, preferably only electronically switchable switching contacts 10.1, 10.2 are to be bridged by means of a bridging element 14.1, 14.2.
- FIG. 2 shows an alternative embodiment of the security system with an additional control unit 40.
- the two switching contacts 10.1, 10.2 are controlled by the control unit 40.
- Control unit 40 is connected to the control unit 30 via a line 32. Via this line 32, the control unit 40 receives control signals from the control unit 30.
- the test of the switching contacts 10.1, 10.2 is also triggered by the control unit 30 by the control unit 30 via line 32 a Control signal for opening the switch contacts 10.1, 10.2 transmitted to the control unit 40.
- the control unit 40 correspondingly opens the switching contacts 10.1, 10.2 in order to check whether the two bridging elements 14.1, 14.2 have been removed.
- Switch 10.1, 10.2 by the control unit 40 can be triggered. Therefore, in the design of the safety system on the reset units from the first Tinsbei game can be omitted.
- a back dividing of the switching contacts 10.1, 10.2 is not only possible due to the expiration of a period of time but alternatively or optionally also possible due to a check of a condition. The test otherwise proceeds analogously to the first exemplary embodiment.
- the control unit 40 is associated, for example, with a shaft information system.
- the shaft information system has information about the speed and position of an elevator car. Accordingly, the switching contact 10.1 is switchable due to an overspeed of the elevator car and the switching contact 10.2 designed as a limit switch.
- Switching contact 10.1 is at a safety brake test and the switching contact 10.2 at a
Landscapes
- Elevator Control (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Indicating And Signalling Devices For Elevators (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP13198207 | 2013-12-18 | ||
PCT/EP2014/074935 WO2015090809A1 (en) | 2013-12-18 | 2014-11-18 | Safety system for an elevator system |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3083478A1 true EP3083478A1 (en) | 2016-10-26 |
EP3083478B1 EP3083478B1 (en) | 2022-06-08 |
Family
ID=49880450
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14800041.7A Active EP3083478B1 (en) | 2013-12-18 | 2014-11-18 | Safety circuit for a lift system |
Country Status (5)
Country | Link |
---|---|
US (1) | US10364127B2 (en) |
EP (1) | EP3083478B1 (en) |
CN (1) | CN105829232B (en) |
HK (1) | HK1226046B (en) |
WO (1) | WO2015090809A1 (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104981421B (en) * | 2013-02-12 | 2017-09-29 | 因温特奥股份公司 | Supervising device, transport equipment for persons and the method for monitoring personnel Transporting equipment |
CN107250018B (en) * | 2014-12-17 | 2019-05-31 | 因温特奥股份公司 | Safety circuit for lift facility |
EP3271278B1 (en) * | 2015-03-20 | 2020-10-07 | Otis Elevator Company | Elevator testing arrangement |
EP3403967B1 (en) * | 2017-05-15 | 2019-07-03 | KONE Corporation | A current cut-off arrangement of an elevator |
EP3704048B1 (en) * | 2017-10-31 | 2021-12-01 | Inventio AG | Safety monitoring device for monitoring of safety conditions in a device for transporting people and method for operating the same |
IT201800001754A1 (en) * | 2018-01-24 | 2019-07-24 | Nauled S R L | Timed by-pass switch device with by-pass circuit reset check. |
CN111115401B (en) * | 2018-10-31 | 2021-05-25 | 上海三菱电梯有限公司 | Additional elevator safety loop and elevator safety system |
EP4051612A1 (en) * | 2019-10-31 | 2022-09-07 | Inventio AG | Mobile control unit and method for remotely controlling a lift installation |
EP3825706B1 (en) | 2019-11-25 | 2023-09-27 | Otis Elevator Company | Electronic test nodes for automatic check of a safety chain |
WO2021185451A1 (en) * | 2020-03-19 | 2021-09-23 | Elgo Batscale Ag | Control unit for a lift system |
WO2021197811A1 (en) * | 2020-03-31 | 2021-10-07 | Inventio Ag | Safety monitoring device, and method for monitoring the safety of an elevator system |
US20230174344A1 (en) * | 2020-05-11 | 2023-06-08 | Inventio Ag | Bridge device and method for elevator |
Family Cites Families (23)
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DE4112626A1 (en) | 1991-04-18 | 1992-10-22 | Fraunhofer Ges Forschung | MONITORING DEVICE FOR A CONTROL DEVICE |
EP0809361B1 (en) * | 1996-05-20 | 2005-03-30 | i f m electronic gmbh | Electronic switching device and circuit arrangement for monitoring a technical installation |
CN2447315Y (en) * | 2000-05-15 | 2001-09-12 | 南京润尔科技开发有限公司 | Short-circuit operation alarm for door lock and safety loop of elevator |
CN2581406Y (en) * | 2002-06-06 | 2003-10-22 | 大庆石油管理局 | Short circuit safety device for elevator gate |
ES2362731T3 (en) * | 2004-02-26 | 2011-07-12 | Mitsubishi Denki Kabushiki Kaisha | ELEVATOR SAFETY DEVICE. |
CN2707720Y (en) * | 2004-05-21 | 2005-07-06 | 黄斌 | Interlocked-circuit short-circuit preventing device for controlled elevator door |
FI116937B (en) * | 2004-11-01 | 2006-04-13 | Kone Corp | Elevator test system |
FI118641B (en) * | 2006-06-21 | 2008-01-31 | Kone Corp | Procedure and system in an elevator for detecting and stopping uncontrolled movement of the basket |
EP2035313B1 (en) * | 2006-06-30 | 2010-11-03 | Otis Elevator Company | Safety device for securing minimum spaces at the top or bottom of an elevator shaft being inspected, and elevator having such safety devices |
FI125141B (en) * | 2007-01-03 | 2015-06-15 | Kone Corp | Elevator safety device |
AU2008277777B2 (en) * | 2007-07-17 | 2014-01-16 | Inventio Ag | Method for monitoring a lift system |
CN201258211Y (en) | 2008-07-10 | 2009-06-17 | 上海三菱电梯有限公司 | Elevator door switch detecting contact short circuit guard device |
US8552738B2 (en) * | 2008-11-27 | 2013-10-08 | Inventio Ag | Device for checking a safety circuit of an elevator |
DE102009037347A1 (en) * | 2009-08-14 | 2011-02-17 | K.A. Schmersal Holding Gmbh & Co. Kg | Electronic security system for a lift |
CA2775635C (en) * | 2009-10-26 | 2017-09-12 | Inventio Ag | Safety circuit in an elevator system |
CN201647761U (en) * | 2010-02-09 | 2010-11-24 | 浙江屹立电梯有限公司 | Elevator door interlock adhesion or artificial short circuit safety detection device |
CN201789169U (en) * | 2010-08-23 | 2011-04-06 | 苏州巨立电梯有限公司 | Intelligent short circuit device |
CN102424317B (en) * | 2011-08-18 | 2013-12-11 | 昆山通祐电梯有限公司 | Door interlock short-circuit protection loop for elevator |
IL216841A0 (en) * | 2011-12-08 | 2012-02-29 | Yoram Madar | Elevator protection against short circuit of safety devices |
US10227208B2 (en) * | 2011-12-12 | 2019-03-12 | Cedes Ag | Safety apparatus for an elevator |
CN202704775U (en) * | 2012-07-23 | 2013-01-30 | 山东博源瑞通智能科技有限公司 | Automatic recognition system for short circuiting of door lock of elevator |
CN203269288U (en) * | 2013-01-28 | 2013-11-06 | 苏州施耐德电梯有限公司 | Elevator safety door lock short circuiting system |
ES2668868T3 (en) * | 2013-12-09 | 2018-05-22 | Inventio Ag | Safety circuit for elevator installation |
-
2014
- 2014-11-18 CN CN201480068622.6A patent/CN105829232B/en active Active
- 2014-11-18 WO PCT/EP2014/074935 patent/WO2015090809A1/en active Application Filing
- 2014-11-18 EP EP14800041.7A patent/EP3083478B1/en active Active
- 2014-11-18 US US15/105,642 patent/US10364127B2/en active Active
-
2016
- 2016-12-20 HK HK16114456A patent/HK1226046B/en unknown
Non-Patent Citations (2)
Title |
---|
None * |
See also references of WO2015090809A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2015090809A1 (en) | 2015-06-25 |
US10364127B2 (en) | 2019-07-30 |
CN105829232A (en) | 2016-08-03 |
US20160311653A1 (en) | 2016-10-27 |
EP3083478B1 (en) | 2022-06-08 |
HK1226046B (en) | 2017-09-22 |
CN105829232B (en) | 2017-12-08 |
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