JP2688814B2 - Elevator emergency operation device - Google Patents

Elevator emergency operation device

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Publication number
JP2688814B2
JP2688814B2 JP62064957A JP6495787A JP2688814B2 JP 2688814 B2 JP2688814 B2 JP 2688814B2 JP 62064957 A JP62064957 A JP 62064957A JP 6495787 A JP6495787 A JP 6495787A JP 2688814 B2 JP2688814 B2 JP 2688814B2
Authority
JP
Japan
Prior art keywords
speed
electric motor
car
elevator
output
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.)
Expired - Lifetime
Application number
JP62064957A
Other languages
Japanese (ja)
Other versions
JPS63230487A (en
Inventor
敏昭 石井
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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Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP62064957A priority Critical patent/JP2688814B2/en
Publication of JPS63230487A publication Critical patent/JPS63230487A/en
Application granted granted Critical
Publication of JP2688814B2 publication Critical patent/JP2688814B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明はエレベーターの故障時等にかごを運転する
装置に関するものである。 〔従来の技術〕 第3図は例えば特開昭56−145083号公報に示された従
来のエレベーターの非常時運転装置を示す回路図であ
る。 図中,R,S,Tは三相交流電源,(1)はかご,(2)は
つり合おもり,(3)は主索,(4)は主索(3)が巻
き掛けられた駆動綱車,(5)は巻上用の三相誘導電動
機で,減速機(6)を介して駆動綱車(4)が結合され
ている。(7a)〜(7c)は平常時かご(1)を上り運転
させるとき閉成する上り運転用接触器接点,(8a)〜
(8c)は同じく下り運転させるとき閉成する下り運転用
接触器接点,(9a)〜(9c)は救出運転時の上り運転用
接触器接点,(10a)〜(10c)は同じく救出運転時の下
り運転用接触器,(11)は蓄電池等の非常電源,(12)
は救出運転時閉成する救出運転時用接触器接点,(13)
は半導体素子により構成され直流電力を交流電力に変換
するインバータ装置である。 従来のエレベーターの非常時運転装置は上記のように
構成され,交流電源R,S,Tが正常なときは,その交流電
力が上り又は下り運転用接触器接点(7a)〜(7c),
(8a)〜(8c)を介して電動機(5)に供給されてかご
(1)が運転される。 次に,交流電源R,S,Tが停電すると,救出運転用接触
器接点(12)が閉成し,インバータ装置(13)で変換さ
れた所定周波数の交流電力が上り又は下り運転用接触器
接点(a)〜(9c),(10a)〜(10c)を介して電動機
(5)に供給され,電動機(5)は上記周波数に応じて
速度で回転し,かご(1)が運転される。 〔発明が解決しようとする問題点〕 上記のような従来のエレベーターの非常時運転装置
で,インバータ装置(13)により救出運転しているた
め,エレベータ本来の制御装置とは別に,各エレベータ
ーごとにインバータ装置(13)が必要となる。特に,1台
の電動機(5)を2台の駆動装置で並列駆動する大容量
エレベーターでは,コスト高となることは避けられない
という問題点がある。 この発明は上記問題点を解決するためになされたもの
で,複数台の駆動装置を用いる大容量の電動機の場合で
も,特別なインバータ装置等を必要とせず,安価に構成
できるようにしたエレベーターの非常時運転装置を提供
することを目的とする。 〔問題点を解決するための手段〕 この発明に係るエレベーターの非常時運転装置は,並
列に接続された同一の電圧と周波数を出力する複数の駆
動装置を巻上電動機に接続し、この駆動装置のいずれか
が故障すると、故障した駆動装置を切り放し、他の駆動
装置によりかごを定格速度よりも低い速度で駆動するも
のである。 〔作用〕 この発明においては,かご巻上用電動機は、正常時
は、並列に接続された同一の電圧と周波数を出力する複
数の駆動装置で並列駆動され、駆動装置の故障時は、定
格速度よりも低い速度に設定して、故障した駆動装置以
外の駆動装置の能力の範囲内で駆動されることになる。 〔実施例〕 第1図及び第2図はこの発明の一実施例を示す回路図
で,従来装置と同一部分は同一符号で示す。 図中(14A),(14B)は交流電力を直流電力に変換す
るコンバータ,(15A),(15B)は直流電力を交流電力
に変換するインバータで,コンバータ(14A),(14B)
及びインバータ(15A),(15B)によりそれぞれ駆動装
置が構成されている。(16A),(16B)はそれぞれイン
バータ(15A),(15B)の入力電流を検出しそれが所定
値を越えるとそれぞれ出力(16a),(16b)が「H」に
なる過電流検出器,(17A),(17B)はそれぞれインバ
ータ(15A),(15B)の出力側に挿入された交流リアク
トル,(18)は起動を指令する起動回路,(19)は速度
指令信号を発する速度指令発生回路,(20)はインバー
タ(15A)(15B)を制御するインバータ制御回路,(21
A),(21B)は入力が「H」になると一定時間後に出力
が「H」になるタイマ,(22A),(22B)は記憶回路,
(23A),(23B)はNOT ゲート,(24),(25)は切
放し用接触器で,(24a)〜(24f),(25a)〜(25f)
はその常開接点,(26)はORゲート,(27)は記憶回
路,(28)は記憶回路(27)のリセツト回路,(29)は
NOTゲート,(30)は非常停止用接触器で,(30a)〜
(30c)はその常開接点である。なお、図示していない
が、インバータ(15A)(15B)には、第3図に示すよう
な非常電源(11)及び救出運転用接触器接点(12)が接
続されているものとする。 なお,上記のように駆動装置が2台用いられるのは次
の理由による。 すなわち,エレベーターの巻上電動機(5)の駆動装
置は,エレベーターの定格によつてその容量が決められ
る。ここに,定格とは(速度×積載荷重)を意味し,積
載荷重とは実際に使用する際に積載し得る最大荷重をい
う。そして,1台の駆動装置ではエレベーターを駆動する
能力が不足するときには, (ア) 大容量の駆動装置を使用する。 (イ) 同容量の駆動装置を並列して使用する。 ことが考えられる。しかし,(ア)では駆動装置1台の
外形寸法が大きくなり過ぎて,機械室内の配置が困難に
なることがあるので,小形の駆動装置を2台並設する
(イ)の方式が採用されることが多い。 次に,上記実施例の動作を説明する。 駆動装置の正常時は,過電流検出器(16A),(16B)
の出力(16a),(16b)は共に「L」であり,記憶回路
(22A),(22B),(27)の出力も「L」であるため,N
OTゲート(23A),(23B),(29)の出力は「H」とな
り,切放し用接触器(24),(25)及び非常停止用接触
器(30)は付勢され,接点(24a)〜(24f),(25a)
〜(25f),(30a)〜(30c)はすべて閉成している。
したがつて,交流電源R,S,Tの交流電力は,それぞれコ
ンバータ(14A),(14B)で直流電力に変換され,これ
がインバータ(15A),(15B)により交流電力に変換さ
れた電動機(5)に供給される。一方,起動回路(18)
から起動指令が出ると,速度指令発生回路(19)は速度
指令信号を発生し,インバータ制御回路(20)はこれに
応じてインバータ(15A),(15B)を制御し,インバー
タ(15A),(15B)の出力周波数を調整する。これで,
インバータ(15A),(15B)は可変周波数の交流電力を
出力するので,電動機(5)は速度制御され,かご
(1)は指令された速度で昇降する。 次に,かご(1)が走行中に,インバータ(15A)が
故障して過大な電流がインバータ(15A)に流入したと
する。過電流検出器(16A)はこれを検出し,その出力
(16a)は「H」となる。これで,ORゲート(26)の出力
も「H」となり,これが記憶回路(27)で記憶され,そ
の出力は「H」となり,NOTゲート(29)の出力は「L」
となつて,非常停止用接触器(30)は消勢され,接点
(30a)〜(30c)は開放し,コンバータ(14A),(14
B)の入力は遮断される。同時にブレーキ(図示しな
い)が作用してかご(1)は非常停止する。 一方,出力(16a)が「H」になると,タイマ(21A)
は時間のカウントを開始,かご(1)が停止するに十分
な時間経過後に,タイマ(21A)の出力な「H」とな
り,これが記憶回路(22A)で記憶され,その出力は
「H」となり,NOTゲート(23A)の出力は「L」となつ
て,切放し用接触器(24)は消勢され,接点(24a)〜
(24d)は開放する。これにより,コンバータ(14A)及
びインバータ(15A)は駆動装置から切り放される。 また,接点(24f)の開放により,リセツト回路(2
8)は動作し,記憶回路(27)はリセツトされ,その出
力は「L」となるため,NOT ゲート(29)の出力は再び
「H」となり,非常停止用接触器(30)は再び付勢さ
れ,接点(30a)〜(30c)は閉成する。これで,コンバ
ータ(14B)及びインバータ(15B)は電動機(5)に接
続され,起動指令が出ればいつでも起動できる状態にな
る。そして,起動指令が出ると,接点(24e)が開放し
たことにより,速度指令発生回路(19)は,定格速度よ
りも低い速度を指令する速度指令信号をインバータ(15
B)に送出する。これでかご(1)は低速で走行する。
すなわち,駆動装置としての出力は半減するが,定格よ
りも十分低い速度で走行させるようにしたので,かご
(1)を駆動することが可能である。これで,かご
(1)は最寄り階まで低速走行し,かご(1)内の乗客
は救出される。 なお,実施例では,インバータ(15A)が故障したと
して説明したが,インバータ(15B)が故障したとき
は,コンバータ(14A)及びインバータ(15A)で電動機
(5)が駆動されることは明白である。 〔発明の効果〕 以上説明したとおりこの発明では,かご巻上用電動機
は、正常時は、並列に接続された同一の電圧と周波数を
出力する複数の駆動装置で並列駆動され、駆動装置の故
障時は、定格速度よりも低い速度に設定して、故障した
駆動装置以外の駆動装置の能力の範囲内で駆動されるこ
とになり、複数台の駆動装置を並列運転して駆動する大
容量の電動機の場合でも、特別な非常時運転装置を必要
とせず、安価に構成することができ、かつ設定速度まで
の加速に必要な時間を短くし、乗り心地をよくして駆動
することができる効果がある。
DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to an apparatus for operating a car when an elevator is out of order. [Prior Art] FIG. 3 is a circuit diagram showing a conventional elevator emergency operation device disclosed in, for example, Japanese Patent Laid-Open No. 56-145083. In the figure, R, S, T are three-phase AC power supplies, (1) is a car, (2) is a counterweight, (3) is a main rope, and (4) is a drive rope around which the main rope (3) is wound. The vehicle (5) is a three-phase induction motor for hoisting, to which the drive sheave (4) is connected via a speed reducer (6). (7a) to (7c) are contactors contacts for ascending operation that are closed when the car (1) is operated normally during ascending operation, (8a) to
(8c) is also a contactor contact for down operation that is closed when the down operation is performed, (9a) to (9c) is contact contact for up operation during rescue operation, and (10a) to (10c) is also during rescue operation Contactor for downhill operation, (11) is an emergency power source such as a storage battery, (12)
Is a contactor contact for rescue operation, which is closed during rescue operation, (13)
Is an inverter device which is composed of semiconductor elements and converts DC power into AC power. The conventional emergency operation device for an elevator is configured as described above, and when the AC power supplies R, S, T are normal, the AC power of the contactor contacts (7a) to (7c) for up or down operation,
The car (1) is operated by being supplied to the electric motor (5) through (8a) to (8c). Next, when the AC power supplies R, S, T fail, the rescue operation contactor contact (12) is closed, and the AC power of the predetermined frequency converted by the inverter device (13) is up or down operation contactor. It is supplied to the electric motor (5) through the contacts (a) to (9c) and (10a) to (10c), the electric motor (5) rotates at a speed according to the above frequency, and the car (1) is operated. . [Problems to be Solved by the Invention] In the conventional emergency operation device for an elevator as described above, since the inverter device (13) is performing rescue operation, each elevator is separate from the original control device of the elevator. An inverter device (13) is required. In particular, in a large capacity elevator in which one electric motor (5) is driven in parallel by two driving devices, there is a problem that the cost is inevitable. The present invention has been made to solve the above-mentioned problems, and even in the case of a large-capacity electric motor using a plurality of drive devices, a special inverter device or the like is not required, and an elevator that can be constructed at low cost is provided. The purpose is to provide an emergency operation device. [Means for Solving Problems] An emergency operating device for an elevator according to the present invention is configured such that a plurality of driving devices, which are connected in parallel and output the same voltage and frequency, are connected to a hoisting electric motor. If any of the above fails, the failed drive is disconnected and the other drive drives the car at a speed lower than the rated speed. [Operation] In the present invention, the car hoisting motor is normally driven in parallel by a plurality of driving devices connected in parallel and outputting the same voltage and frequency, and when the driving device fails, the rated speed is set. It will be driven at a speed lower than the above and within the capability of the driving device other than the defective driving device. [Embodiment] FIGS. 1 and 2 are circuit diagrams showing an embodiment of the present invention, in which the same parts as those of the conventional device are designated by the same reference numerals. In the figure, (14A) and (14B) are converters that convert AC power to DC power, and (15A) and (15B) are inverters that convert DC power to AC power. Converters (14A) and (14B)
And the inverters (15A) and (15B) respectively form a drive unit. (16A) and (16B) detect the input currents of the inverters (15A) and (15B) respectively, and when they exceed a predetermined value, the output (16a) and (16b) become "H", respectively. (17A) and (17B) are AC reactors inserted on the output side of the inverters (15A) and (15B), (18) is a start circuit that issues a start command, and (19) is a speed command generation that issues a speed command signal. Circuit, (20) is an inverter control circuit for controlling the inverters (15A) (15B), (21
A) and (21B) are timers whose output becomes “H” after a certain time when the input becomes “H”, (22A) and (22B) are memory circuits,
(23A) and (23B) are NOT gates, (24) and (25) are cut-off contactors, (24a) to (24f), (25a) to (25f)
Is its normally open contact, (26) is an OR gate, (27) is a memory circuit, (28) is a reset circuit of the memory circuit (27), and (29) is
NOT gate, (30) is a contactor for emergency stop, (30a) ~
(30c) is the normally open contact. Although not shown, it is assumed that the inverters (15A) and (15B) are connected to an emergency power source (11) and a rescue operation contactor contact (12) as shown in FIG. The reason why two driving devices are used as described above is as follows. That is, the capacity of the drive device for the hoisting electric motor (5) of the elevator is determined by the rating of the elevator. Here, the rating means (speed x load capacity), and the load capacity means the maximum load that can be loaded in actual use. If a single drive system lacks the ability to drive an elevator, (a) use a large-capacity drive system. (B) Drive devices of the same capacity are used in parallel. It is possible. However, in (a), the external dimensions of one drive device may become too large, making it difficult to place them in the machine room. Therefore, the method of (a) in which two small drive devices are installed side by side is adopted. Often. Next, the operation of the above embodiment will be described. When the drive unit is normal, overcurrent detectors (16A), (16B)
Since both outputs (16a) and (16b) are "L" and the outputs of the memory circuits (22A), (22B) and (27) are also "L",
The output of the OT gates (23A), (23B), (29) becomes “H”, the contactors for disconnection (24), (25) and the contactor for emergency stop (30) are energized, and the contact (24a). ~ (24f), (25a)
~ (25f), (30a) to (30c) are all closed.
Therefore, the AC power of the AC power supplies R, S, T is converted into DC power by the converters (14A) and (14B), respectively, and this is converted into AC power by the inverters (15A) and (15B) ( 5) is supplied. Meanwhile, the starting circuit (18)
When a start command is issued from the inverter, the speed command generation circuit (19) generates a speed command signal, and the inverter control circuit (20) controls the inverters (15A) and (15B) accordingly, and the inverter (15A), Adjust the output frequency of (15B). with this,
Since the inverters (15A) and (15B) output AC power of variable frequency, the speed of the electric motor (5) is controlled and the car (1) moves up and down at the commanded speed. Next, it is assumed that the inverter (15A) fails and an excessive current flows into the inverter (15A) while the car (1) is running. The overcurrent detector (16A) detects this, and its output (16a) becomes "H". As a result, the output of the OR gate (26) also becomes "H", this is stored in the memory circuit (27), its output becomes "H", and the output of the NOT gate (29) becomes "L".
Therefore, the emergency stop contactor (30) is de-energized, the contacts (30a) to (30c) are opened, and the converters (14A) and (14
Input B) is cut off. At the same time, a brake (not shown) acts and the car (1) comes to an emergency stop. On the other hand, when the output (16a) becomes "H", the timer (21A)
Starts counting the time, and after a lapse of time sufficient for the car (1) to stop, the output of the timer (21A) becomes "H", which is stored in the memory circuit (22A) and its output becomes "H". The output of the NOT gate (23A) becomes "L", the disconnecting contactor (24) is de-energized, and the contacts (24a) ~
(24d) is open. As a result, the converter (14A) and the inverter (15A) are disconnected from the drive device. In addition, by opening the contact (24f), the reset circuit (2
8) operates, the memory circuit (27) is reset, its output becomes "L", the output of the NOT gate (29) becomes "H" again, and the emergency stop contactor (30) is reattached. Then, the contacts (30a) to (30c) are closed. With this, the converter (14B) and the inverter (15B) are connected to the electric motor (5), and ready to be started whenever a start command is issued. Then, when the start command is issued, the contact (24e) is opened, so that the speed command generation circuit (19) outputs a speed command signal for commanding a speed lower than the rated speed to the inverter (15).
Send to B). The car (1) is now running at low speed.
That is, although the output of the drive device is halved, the car (1) can be driven because the car is driven at a speed sufficiently lower than the rated value. Now, the car (1) runs at a low speed to the nearest floor, and the passengers in the car (1) are rescued. In the embodiment, the inverter (15A) is described as having failed, but it is clear that the motor (5) is driven by the converter (14A) and the inverter (15A) when the inverter (15B) fails. is there. [Effects of the Invention] As described above, in the present invention, the car hoisting electric motor is normally driven in parallel by a plurality of driving devices connected in parallel and outputting the same voltage and frequency, and a failure of the driving device occurs. In this case, the speed will be set lower than the rated speed, and it will be driven within the capacity of the drive device other than the faulty drive device. Even in the case of an electric motor, it does not require a special emergency operation device, can be configured at low cost, and can shorten the time required to accelerate to the set speed and drive with a comfortable ride. There is.

【図面の簡単な説明】 第1図及び第2図はこの発明によるエレベーターの非常
時運転装置の一実施例を示す回路図,第3図は従来のエ
レベーターの非常時運転装置を示す回路図である。 図中,(1)はかご,(5)は三相誘導電動機,(14
A),(14B)は駆動装置(コンバータ),(15A),(1
5B)は駆動装置(インバータ),(16A),(16B)は故
障検出器(過電流検出器),(19)は制御装置(速度指
令発生回路),(20)は制御装置(インバータ制御回
路),(24),(25)は切放し装置(切放し用接触器)
である。 なお,図中同一符号は同一部分を示す。
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 and FIG. 2 are circuit diagrams showing an embodiment of an emergency operation device for an elevator according to the present invention, and FIG. 3 is a circuit diagram showing a conventional emergency operation device for an elevator. is there. In the figure, (1) is a basket, (5) is a three-phase induction motor, and (14
A), (14B) are drive devices (converters), (15A), (1
5B) is a drive device (inverter), (16A), (16B) is a failure detector (overcurrent detector), (19) is a control device (speed command generation circuit), and (20) is a control device (inverter control circuit). ), (24) and (25) are cut-off devices (cut-off contactors)
It is. In the drawings, the same reference numerals indicate the same parts.

Claims (1)

(57)【特許請求の範囲】 1.昇降路内を昇降するかごと、互いに並列に接続され
た同一の電圧と周波数を出力する複数の電動機駆動装置
の出力を合成して駆動される1台のかご巻上用電動機
と、前記電動機駆動装置のいずれかの故障を検出する故
障検出装置と、該故障検出装置が動作すると故障した前
記電動機駆動装置を正常な前記電動機駆動装置から切り
放す切放し装置とを具備してなり,正常な前記電動機駆
動装置により前記かご巻上用電動機を定格速度よりも低
い速度で駆動することを特徴とするエレベーターの非常
運転装置。
(57) [Claims] One car hoisting electric motor driven by combining outputs of a plurality of electric motor driving devices that output the same voltage and frequency connected in parallel to each other when moving up and down in the hoistway; The normal motor includes a failure detection device that detects any failure of the device, and a disconnection device that disconnects the failed motor drive device from the normal motor drive device when the failure detection device operates. An emergency operation device for an elevator, characterized in that the drive device drives the car hoisting electric motor at a speed lower than a rated speed.
JP62064957A 1987-03-19 1987-03-19 Elevator emergency operation device Expired - Lifetime JP2688814B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62064957A JP2688814B2 (en) 1987-03-19 1987-03-19 Elevator emergency operation device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62064957A JP2688814B2 (en) 1987-03-19 1987-03-19 Elevator emergency operation device

Publications (2)

Publication Number Publication Date
JPS63230487A JPS63230487A (en) 1988-09-26
JP2688814B2 true JP2688814B2 (en) 1997-12-10

Family

ID=13273034

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62064957A Expired - Lifetime JP2688814B2 (en) 1987-03-19 1987-03-19 Elevator emergency operation device

Country Status (1)

Country Link
JP (1) JP2688814B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002284464A (en) * 2001-03-27 2002-10-03 Toshiba Elevator Co Ltd Elevator control device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH072037B2 (en) * 1989-07-03 1995-01-11 日本オーチス・エレベータ株式会社 Inverter control device for elevator drive
JPH04365770A (en) * 1991-06-13 1992-12-17 Toshiba Corp Control device for elevator
JP6990148B2 (en) * 2018-05-30 2022-01-12 株式会社日立ビルシステム Elevator drive control system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5859179A (en) * 1981-09-28 1983-04-08 三菱電機株式会社 Controller for alternating current elevator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002284464A (en) * 2001-03-27 2002-10-03 Toshiba Elevator Co Ltd Elevator control device

Also Published As

Publication number Publication date
JPS63230487A (en) 1988-09-26

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