EP0696255A1 - Process for the electronic control of a people conveyor - Google Patents

Process for the electronic control of a people conveyor

Info

Publication number
EP0696255A1
EP0696255A1 EP94905670A EP94905670A EP0696255A1 EP 0696255 A1 EP0696255 A1 EP 0696255A1 EP 94905670 A EP94905670 A EP 94905670A EP 94905670 A EP94905670 A EP 94905670A EP 0696255 A1 EP0696255 A1 EP 0696255A1
Authority
EP
European Patent Office
Prior art keywords
people
frequency converter
switched
drive
passenger conveyor
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Withdrawn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
EP94905670A
Other languages
German (de)
French (fr)
Inventor
Peter Höfling
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.)
O& K ROLLTREPPEN GmbH
O&K Rolltreppen GmbH and Co KG
Original Assignee
O& K ROLLTREPPEN GmbH
O&K Rolltreppen GmbH and Co KG
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 O& K ROLLTREPPEN GmbH, O&K Rolltreppen GmbH and Co KG filed Critical O& K ROLLTREPPEN GmbH
Publication of EP0696255A1 publication Critical patent/EP0696255A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B25/00—Control of escalators or moving walkways
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies

Definitions

  • the invention relates to a method for the electronic control of passenger conveyor systems, such as escalators or moving walks.
  • escalator drives can be switched on or off depending on the presence or absence of people, so that the escalator either stands or runs at normal speed. The same naturally applies to moving walks. It is disadvantageous to note here that, due to the constant switching on and off, high current peaks occur, which have a disadvantageous effect on the service life of the drive.
  • the aim of the subject matter of the invention is to design a method for the electronic control of passenger conveyor systems, such as escalators or moving walkways, with which the passenger conveyor can be regulated on the one hand as required.
  • passenger conveyor systems such as escalators or moving walkways
  • current peaks and costs for reactive power are to be eliminated and the total energy consumption is to be reduced.
  • this goal is achieved in that the drive of the personal conveyor system is switched on and the personal conveyor system is regulated to a predetermined standby speed by means of at least one frequency converter, which is maintained until a monitoring device detects personal operation and the passenger conveyor system via the frequency converter is regulated to a predetermined transport speed and the drive is switched to mains operation when the transport speed is reached or a predetermined load or number of people is exceeded.
  • the speed of the personal conveyor system in particular an escalator or an escalator, can be regulated on the basis of a standby speed, with the aid of the frequency converter, as required.
  • Current peaks and costs for reactive current are eliminated, in particular in view of the fact that the frequency converter is not designed in accordance with the power of the motor but rather is dimensioned smaller.
  • the total energy consumption can be reduced by the measures according to the invention.
  • the flow diagram shows the circuit diagram for example of an escalator.
  • the escalator is switched on and started.
  • the escalator is regulated on a ramp via frequency converters to a standby speed of 0.2 m / s in this example. This speed is maintained until a monitoring device, for example a light barrier 3, is actuated. The light barrier 3 then controls the further process.
  • the escalator is also regulated on a ramp via the frequency converter to a normal speed of, for example, 0.5 m / s.
  • This state is maintained until a predetermined load or number of people is exceeded, for example the slip of the drive motor as the starting criterion. This is defined by phase 5.
  • phase 6 i.e. If the specified load or number of people is exceeded, the drive is switched to mains operation.
  • This diagram shows two different modes of operation.
  • mode of operation 7 a single drive motor 8 with a star-delta connection is specified, the switchover to mains operation first being switched over to the mode of operation of the less powerful star mode 9.
  • the drive 8 is switched from star 9 to delta operation 10.
  • a plurality of drive motors 12 are provided, which are switched on or off in line with the load in line operation, with criteria such as the slippage of the motor or motors being able to be used as a basis for the connection or disconnection.
  • the remaining motor is switched to the frequency converter in phase 13 when there is no longer any user on the escalator and in phase 14 the speed is regulated to standby mode, as assumed here 0.2 m / s .
  • the frequency converter is only dimensioned for half the drive power of the motor, a voltage-controlled frequency converter being used instead of the reactive current-intensive frequency-controlled frequency converter.
  • the escalator can then be switched off again from the standby speed of 0.2 m / s.

Landscapes

  • Escalators And Moving Walkways (AREA)
  • Control Of Conveyors (AREA)

Abstract

A process for the electronic control of people conveyors in which the drive of the people conveyor is switched on and set to a predetermined stand-by speed via at least one frequency converter which is maintained until a monitoring device detects the conveyance of people and sets the people conveyor to a predetermined transport speed via the frequency converter and, on reaching the transport speed or on exceeding a predetermined load or number of people, switches the drive over to mains operation.

Description

Verfahren zur elektronischen Steuerung von Personenförderanlagen Process for the electronic control of passenger conveyor systems
Die Erfindung betrifft ein Verfahren zur elektronischen Steuerung von Personenförderanlagen, wie Rolltreppen oder Rollsteigen.The invention relates to a method for the electronic control of passenger conveyor systems, such as escalators or moving walks.
Allgemein bekannt ist, daß Rolltreppenantriebe in Abhängigkeit von dem Vorhanden- oder NichtVorhandensein von Personen ein- oder abgeschaltet werden können, so daß die Rolltreppe entweder steht oder aber mit Normal¬ geschwindigkeit läuft. Gleiches gilt natürlich auf für Rollsteige. Nach¬ teilig ist hier festzustellen, daß infolge der ständigen Ein- und Aus¬ schaltungen hohe Stromspitzen entstehen, die sich auf die Standzeit des Antriebes nachteilig auswirken.It is generally known that escalator drives can be switched on or off depending on the presence or absence of people, so that the escalator either stands or runs at normal speed. The same naturally applies to moving walks. It is disadvantageous to note here that, due to the constant switching on and off, high current peaks occur, which have a disadvantageous effect on the service life of the drive.
Ziel des Erfindungsgegenstandes ist es, ein Verfahren zur elektronischen Steuerung von Personenförderanlagen, wie Rolltreppen oder Rollsteigen, zu konzipieren, mit welchem der Personenförderer einerseits bedarfsabhängig geregelt werden kann. Andererseits sollen Stromspitzen und Kosten für Blindstrom entfallen und der Gesamtenergieverbrauch gesenkt werden.The aim of the subject matter of the invention is to design a method for the electronic control of passenger conveyor systems, such as escalators or moving walkways, with which the passenger conveyor can be regulated on the one hand as required. On the other hand, current peaks and costs for reactive power are to be eliminated and the total energy consumption is to be reduced.
Dieses Ziel wird verfahrensgemäß erreicht, indem der Antrieb der Perso¬ nenförderanlage eingeschaltet und die Personenförderanlage über minde¬ stens einen Frequenzumformer auf eine vorgegebene Standby-Geschwindig- keit geregelt wird, die solange gehalten wird, bis eine Überwachungsein¬ richtung Personenbetrieb feststellt und die Personenförderanlage über den Frequenzumformer auf eine vorgegebene Transportgeschwindigkeit geregelt und bei Erreichen der Transportgeschwindigkeit bzw. Überschreitung einer vorgegebenen Last oder Personenanzahl der Antrieb auf Netzbetrieb umge¬ schaltet wird.According to the method, this goal is achieved in that the drive of the personal conveyor system is switched on and the personal conveyor system is regulated to a predetermined standby speed by means of at least one frequency converter, which is maintained until a monitoring device detects personal operation and the passenger conveyor system via the frequency converter is regulated to a predetermined transport speed and the drive is switched to mains operation when the transport speed is reached or a predetermined load or number of people is exceeded.
Vorteilhafte Weiterbildungen des Erfindungsgegenstandes sind den Unteran¬ sprüchen zu entnehmen.Advantageous developments of the subject matter of the invention can be found in the subclaims.
Mit Hilfe der elektronischen Steuerung kann die Geschwindigkeit der Per¬ sonenförderanlage, insbesondere einer Rolltreppe bzw. eines Rollsteiges, ausgehend von einer Standby-Geschwindigkeit, mit Hilfe des Frequenzu - wandlers bedarfsabhängig geregelt werden. Stromspitzen und Kosten für Blindstrom entfallen, insbesondere im Hinblick darauf, daß der Frequenz¬ umformer nicht der Leistung des Motors entsprechend ausgebildet sondern geringer dimensioniert ist. Der Gesamtenergieverbrauch kann durch die erfindungsgemäßen Maßnahmen gesenkt werden.With the aid of the electronic control, the speed of the personal conveyor system, in particular an escalator or an escalator, can be regulated on the basis of a standby speed, with the aid of the frequency converter, as required. Current peaks and costs for reactive current are eliminated, in particular in view of the fact that the frequency converter is not designed in accordance with the power of the motor but rather is dimensioned smaller. The total energy consumption can be reduced by the measures according to the invention.
Bekannte und auf anderen technischen Gebieten eingesetzte stromgeführte Frequenzumformer weisen den Nachteil auf, daß hohe seitens der Energieer¬ zeuger in Rechnung zu stellende Blindströme auftreten. Bei dem erfin¬ dungsgemäßen spannungsgeführten Umformer ergibt sich ein wesentlich gün¬ stigeres Blindstromverhältnis, so daß die ansonsten anfallenden Kosten für den Blindstrom somit entfallen können.Known current-controlled frequency converters used in other technical fields have the disadvantage that high reactive currents to be charged by the energy generators occur. In the case of the voltage-controlled converter according to the invention, the reactive current ratio is considerably more favorable, so that the otherwise incurred costs for the reactive current can thus be eliminated.
Das erfindungsgemäße Verfahren wird im folgenden anhand eines Flußdia- grammes näher erläutert.The method according to the invention is explained in more detail below with the aid of a flow chart.
Das Flußdiagramm zeigt das Schaltschema beispielsweise einer Rolltreppe. In der ersten Phase 1 wird die Rolltreppe eingeschaltet und gestartet. In der zweiten Phase wird 2 die Rolltreppe auf einer Rampe über Frequenzum¬ former auf eine Standby-Geschwindigkeit von in diesem Beispiel 0,2 m/s geregelt. Diese Geschwindigkeit wird solange beibehalten, bis eine Über¬ wachungseinrichtung, beispielsweise eine Lichtschranke 3 betätigt wird. Die Lichtschranke 3 steuert dann den weiteren Ablauf. Ist das Signal der Lichtschranke positiv, wird in der Phase 4 die Rolltreppe ebenfalls auf einer Rampe über den Frequenzumformer auf eine Normalgeschwindigkeit von beispielsweise 0,5 m/s geregelt. Dieser Zustand wird solange beibehalten, bis eine vorgegebene Last bzw. Personenanzahl überschritten wird, wobei hier beispielsweise der Schlupf des Antriebsmotors als Ausgangskriterium zugrunde gelegt werden kann. Dies ist durch Phase 5 definiert. In Phase 6, d.h. bei Überschreitung der vorgegebenen Last bzw. Personenanzahl wird der Antrieb auf Netzbetrieb umgeschaltet.The flow diagram shows the circuit diagram for example of an escalator. In the first phase 1, the escalator is switched on and started. In the second phase, the escalator is regulated on a ramp via frequency converters to a standby speed of 0.2 m / s in this example. This speed is maintained until a monitoring device, for example a light barrier 3, is actuated. The light barrier 3 then controls the further process. If the signal from the light barrier is positive, in phase 4 the escalator is also regulated on a ramp via the frequency converter to a normal speed of, for example, 0.5 m / s. This state is maintained until a predetermined load or number of people is exceeded, for example the slip of the drive motor as the starting criterion. This is defined by phase 5. In phase 6, i.e. If the specified load or number of people is exceeded, the drive is switched to mains operation.
In diesem Diagramm sind zwei verschiedene Betriebsweisen dargestellt. In der Betriebsweise 7 ist ein einzelner Antriebsmotor 8 mit einer Stern- Dreieck-Schaltung vorgegeben, wobei der Umschaltung auf Netzbetrieb zu¬ nächst in die Betriebsweise des leistungsschwächeren Sternbetriebes 9 umgeschaltet wird. In Abhängigkeit einer zu überschreitenden Last bzw. Personenanzahl, die ebenfalls beispielsweise über den Schlupf des An¬ triebsmotors 8 geregelt werden kann, wird der Antrieb 8 von Stern- 9 auf Dreieckbetrieb 10 umgeschaltet. In der zweiten Version 11 sind mehrere Antriebsmotoren 12 vorgesehen, die im Netzbetrieb lastabhängig zu- oder abgeschaltet werden, wobei auch hier Kriterien, wie der Schlupf des bzw. der Motoren, der Zu- oder Abschaltung zugrunde gelegt werden können.This diagram shows two different modes of operation. In mode of operation 7, a single drive motor 8 with a star-delta connection is specified, the switchover to mains operation first being switched over to the mode of operation of the less powerful star mode 9. Depending on a load or number of people to be exceeded, which can also be regulated, for example, by the slip of the drive motor 8, the drive 8 is switched from star 9 to delta operation 10. In the second version 11, a plurality of drive motors 12 are provided, which are switched on or off in line with the load in line operation, with criteria such as the slippage of the motor or motors being able to be used as a basis for the connection or disconnection.
In beiden Fällen wird der jeweils verbleibende Motor in der Phase 13 auf den Frequenzumformer umgeschaltet, wenn sich kein Benutzer mehr auf der Rolltreppe befindet und in der Phase 14 die Geschwindigkeit auf den Standby-Betrieb von, wie hier angenommen 0,2 m/s geregelt.In both cases, the remaining motor is switched to the frequency converter in phase 13 when there is no longer any user on the escalator and in phase 14 the speed is regulated to standby mode, as assumed here 0.2 m / s .
Zur Energieeinsparung ist der Frequenzumformer lediglich auf die halbe Antriebsleistung des Motors dimensioniert, wobei anstelle des blindstrom¬ intensiven stromgeregelten Frequenzumformers ein spannungsgeführter Fre¬ quenzumformer zu Einsatz gelangt. Aus der Standby-Geschwindigkeit von 0,2 m/s kann die Rolltreppe dann wieder abgeschaltet werden. To save energy, the frequency converter is only dimensioned for half the drive power of the motor, a voltage-controlled frequency converter being used instead of the reactive current-intensive frequency-controlled frequency converter. The escalator can then be switched off again from the standby speed of 0.2 m / s.

Claims

Patentansprüche Claims
1. Verfahren zur elektronischen Steuerung von Personenförderanlagen, wie Rolltreppen oder Rollsteigen, indem der Antrieb der Personenför¬ deranlage eingeschaltet und die Personenförderanlage über mindestens einen Frequenzumformer auf eine vorgegebene Standby-Geschwindigkeit geregelt wird, die solange gehalten wird, bis eine Überwachungsein¬ richtung Personenbetrieb feststellt und die Personenförderanlage über den Frequenzumformer auf eine vorgegebene Transportgeschwind¬ igkeit geregelt und bei Erreichen der Transportgeschwindigkeit bzw. Überschreitung einer vorgegebene Last oder Personenanzahl der An¬ trieb auf Netzbetrieb umgeschaltet wird.1. Method for the electronic control of passenger conveyor systems, such as escalators or moving walks, in that the drive of the passenger conveyor system is switched on and the passenger conveyor system is regulated to a predetermined standby speed by at least one frequency converter, which is maintained until a monitoring device detects personal operation and the passenger conveyor system is regulated to a predetermined transport speed via the frequency converter and the drive is switched to mains operation when the transport speed is reached or a predetermined load or number of people is exceeded.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Frequenz¬ umformer nicht der Motorantriebsleistung entsprechend sondern gerin¬ ger, insbesondere der halten Motorantriebsleistung entsprechend, dimensioniert wird.2. The method according to claim 1, characterized in that the frequency converter is not dimensioned according to the motor drive power but rather gerin¬ ger, in particular according to the motor drive power.
3. Verfahren nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß der Frequenzumformer als spannungsgeführter Umformer ausgebildet wird.3. The method according to claims 1 and 2, characterized in that the frequency converter is designed as a voltage-controlled converter.
4. Verfahren nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß der Antriebsmotor mit einer Stern-Dreieck-Schaltung versehen ist und der Antriebsmotor bis zu einer vorgegebenen Last bzw. Personenanzahl zunächst im Sternbetrieb gefahren und bei diesen wertübersteigender Last bzw. Personenanzahl auf Dreieckbetrieb umgeschaltet wird.4. The method according to claims 1 to 3, characterized in that the drive motor is provided with a star-delta circuit and the drive motor up to a predetermined load or number of people first operated in star mode and at this value-exceeding load or number of people in delta operation is switched.
5. Verfahren nach den Ansprüchen 1 bis 3, gekennzeichnet durch mehrere Antriebsmotoren, die im Netzbetrieb last- bzw. personenabhängig zu- bzw. abgeschaltet werden.5. The method according to claims 1 to 3, characterized by a plurality of drive motors which are switched on or off depending on the load or person depending on the network operation.
6. Verfahren nach den Ansprüchen 1 bis 5, dadurch gekennzeichnet, daß bei Reduzierung der Last bzw. der Personenanzahl auf einen vorgege¬ benen Wert vom Netzbetrieb wieder auf den Frequenzumformerbetrieb umgeschaltet und die Geschwindigkeit der Personenförderanlage auf den Standby-Betrieb zurückgeführt wird. 6. The method according to claims 1 to 5, characterized in that when reducing the load or the number of people to a pregiven value from the network operation switched back to the frequency converter operation and the speed of the passenger conveyor system is returned to the standby mode.
EP94905670A 1993-04-26 1994-01-21 Process for the electronic control of a people conveyor Withdrawn EP0696255A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4313424A DE4313424C2 (en) 1993-04-26 1993-04-26 Process for the electronic control of personal conveyor systems
DE4313424 1993-04-26
PCT/EP1994/000151 WO1994025386A1 (en) 1993-04-26 1994-01-21 Process for the electronic control of a people conveyor

Publications (1)

Publication Number Publication Date
EP0696255A1 true EP0696255A1 (en) 1996-02-14

Family

ID=6486259

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94905670A Withdrawn EP0696255A1 (en) 1993-04-26 1994-01-21 Process for the electronic control of a people conveyor

Country Status (10)

Country Link
EP (1) EP0696255A1 (en)
JP (1) JPH08512273A (en)
KR (1) KR950704178A (en)
CN (1) CN1099005A (en)
BR (1) BR9406508A (en)
DE (1) DE4313424C2 (en)
HR (1) HRP940249A2 (en)
SI (1) SI9400192A (en)
WO (1) WO1994025386A1 (en)
YU (1) YU21794A (en)

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Publication number Priority date Publication date Assignee Title
US6049189A (en) * 1996-10-29 2000-04-11 Otis Elevator Company Variable speed passenger conveyor and method of operation
JP4757390B2 (en) * 2001-01-22 2011-08-24 三菱電機株式会社 Mancombe control device
JP5232383B2 (en) * 2006-12-19 2013-07-10 東芝エレベータ株式会社 Control device and control method for passenger conveyor
FI120194B (en) 2008-03-14 2009-07-31 Kone Corp Transportation equipment system
CN103863932B (en) * 2012-12-17 2017-09-05 通力股份公司 Frequency converter and the staircase control device with frequency converter
CN103872967A (en) * 2012-12-17 2014-06-18 通力股份公司 Frequency converter and escalator control device with frequency converter
CN105151972A (en) * 2015-08-24 2015-12-16 苏州市新瑞奇节电科技有限公司 Intelligent escalator for public place
CN113581988A (en) * 2021-08-12 2021-11-02 通力电梯有限公司 Variable frequency control system, personnel conveying equipment and method for providing variable frequency function for personnel conveying equipment

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DE672781C (en) * 1931-08-07 1939-03-09 Carl Flohr A G Electrically operated escalator with automatic control device
JPS57141377A (en) * 1981-02-27 1982-09-01 Hitachi Ltd Driving device for man conveyor
DE3347792A1 (en) * 1983-02-22 1985-04-04 Hemag Maschinenbau, Ing. A. & F. Manasek Ohg, 6900 Heidelberg Method and device for controlling the drive motor of a wood-processing machine
US4631467A (en) * 1985-05-28 1986-12-23 Otis Elevator Company Escalator passenger flow control
JPS61291390A (en) * 1985-06-18 1986-12-22 三菱電機株式会社 Controller for escalator
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JP2523927B2 (en) * 1990-04-11 1996-08-14 株式会社日立製作所 Passenger conveyor control device

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Title
See references of WO9425386A1 *

Also Published As

Publication number Publication date
SI9400192A (en) 1994-12-31
DE4313424C2 (en) 1995-04-06
BR9406508A (en) 1996-01-09
HRP940249A2 (en) 1996-08-31
DE4313424A1 (en) 1994-10-27
JPH08512273A (en) 1996-12-24
CN1099005A (en) 1995-02-22
YU21794A (en) 1997-07-31
WO1994025386A1 (en) 1994-11-10
KR950704178A (en) 1995-11-17

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