JPH0717675A - Maintaining device for elevator - Google Patents
Maintaining device for elevatorInfo
- Publication number
- JPH0717675A JPH0717675A JP16463993A JP16463993A JPH0717675A JP H0717675 A JPH0717675 A JP H0717675A JP 16463993 A JP16463993 A JP 16463993A JP 16463993 A JP16463993 A JP 16463993A JP H0717675 A JPH0717675 A JP H0717675A
- Authority
- JP
- Japan
- Prior art keywords
- self
- current
- inverter
- extinguishing
- abnormal
- 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
Landscapes
- Indicating And Signalling Devices For Elevators (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、直流電力を交流電力に
変換する複数の自己消弧素子を有するインバータを含む
エレベータの駆動装置に備えられるエレベータの保全装
置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator maintenance device provided in an elevator driving device including an inverter having a plurality of self-extinguishing elements for converting DC power into AC power.
【０００２】[0002]
【従来の技術】従来、例えば特開昭６０−２３２６６号
公報に記載されているように、乗かごの走行中に測定し
た滑り周波数に基づいてインバータの入力電流を演算
し、この演算電流値を実際の入力電流値と比較すること
によりインバータの作動状態が異常かどうかを判定し、
異常と判定した場合に乗かごを非常停止させるようにし
たエレベータの保全装置が提案されている。2. Description of the Related Art Conventionally, as described in, for example, Japanese Patent Laid-Open No. 60-23266, an input current of an inverter is calculated based on a slip frequency measured while a car is running, and this calculated current value is calculated. By comparing with the actual input current value, determine whether the operating state of the inverter is abnormal,
There has been proposed an elevator maintenance device that makes an emergency stop of a car when it is determined to be abnormal.
【０００３】[0003]
【発明が解決しようとする課題】ところで、上述した従
来のエレベータの保全装置では、インバータの作動状態
を異常と判定しても、前記のインバータの作動状態が異
常に至った来歴が不明確であることから、故障要因を調
査することが困難であり、エレベータの復旧にはかなり
の多くの時間を要するという問題があった。なお、前記
のインバータの作動状態が異常となった場合に走行中の
乗かごを非常停止させることから、乗かご内に乗客が閉
じ込められるという懸念もあった。By the way, in the above-mentioned conventional elevator maintenance device, even if the operating state of the inverter is determined to be abnormal, the history of the abnormal operating state of the inverter is unclear. Therefore, there is a problem that it is difficult to investigate the cause of the failure, and it takes a considerable amount of time to restore the elevator. There is also a concern that passengers may be trapped in the car because the car that is running is brought to an emergency stop when the operating state of the inverter becomes abnormal.
【０００４】本発明はこのような従来技術における実情
に鑑みてなされたもので、その目的は、インバータの作
動状態が異常となったとき、容易かつ迅速に復旧を図る
ことのできるエレベータの保全装置を提供することにあ
る。The present invention has been made in view of the actual situation in the prior art as described above, and an object thereof is to provide an elevator maintenance device capable of easily and promptly recovering when the operating state of the inverter becomes abnormal. To provide.
【０００５】[0005]
【課題を解決するための手段】上記の目的を達成するた
めに本発明は、駆動用電源から送られる交流電力を直流
電力に変換するコンバータと、前記直流電力を交流電力
に変換する複数の自己消弧素子を有するインバータと、
このインバータから出力される電力により駆動され、乗
かごを作動させる電動機と、前記自己消弧素子のベース
電流を制御するベースドライブ回路と、このベースドラ
イブ回路に駆動指令を与えるマイクロコンピュータとを
含むエレベータの駆動装置に備えられ、この駆動装置の
保全を行なうエレベータの保全装置において、前記自己
消弧素子に流れる電流を検出する電流検出器と、この電
流検出器で得た電流検出値をあらかじめ定められる電流
基準値と比較して異常かどうかを判定する比較判定手段
と、この比較判定手段により異常と判定される場合、前
記異常な自己消弧素子および前記電流検出値を記憶する
記憶手段と、前記駆動用電源と異なる判定用電源と、こ
の判定用電源に前記自己消弧素子のそれぞれを順次接続
する切り換え回路とを設けた構成にしてある。To achieve the above object, the present invention provides a converter for converting AC power sent from a driving power supply into DC power, and a plurality of self-converters for converting the DC power into AC power. An inverter having an arc extinguishing element,
An elevator including an electric motor driven by electric power output from the inverter to operate a car, a base drive circuit that controls a base current of the self-extinguishing element, and a microcomputer that gives a drive command to the base drive circuit. In a maintenance device for an elevator, which is provided in the drive device for maintenance of the drive device, a current detector for detecting a current flowing through the self-extinguishing element and a current detection value obtained by the current detector are predetermined. A comparison determination unit that determines whether or not the current reference value is abnormal, and a storage unit that stores the abnormal self-extinguishing element and the current detection value when the comparison determination unit determines that the current is abnormal, A judgment power supply different from the driving power supply, and a switching circuit sequentially connecting each of the self-extinguishing elements to the judgment power supply. Are the structure in which a.
【０００６】[0006]
【作用】本発明は上記のように構成したので、切り換え
回路により第１の自己消弧素子を判定用電源に接続し
て、電動機の巻線によるまわり回路を形成しない状態で
前記の第１の自己消弧素子に駆動指令を出力し、前記の
第１の自己消弧素子に流れる電流を電流検出器により検
出し、この電流検出器で得た検出電流値を比較判定手段
により基準電流値と比較して異常かどうかを判定し、同
様に他の自己消弧素子の検出電流値も異常かどうかを判
定する。そして、前記の比較判定手段により異常と判定
した場合に、記憶手段により異常な自己消弧素子および
その検出電流値を記憶する。次いで、異常発生によりか
けつけた保守員が、前記の記憶手段により記憶されるデ
ータを読み出すことにより、自己消弧素子のうちの異常
なものを特定するとともに、その電流検出値に基づいて
故障発生のメカニズムを解析する。これによって、イン
バータの作動状態が異常となったとき、容易かつ迅速に
復旧を図ることができる。Since the present invention is configured as described above, the first self-extinguishing element is connected to the determination power source by the switching circuit, and the first circuit described above is formed without forming the surrounding circuit by the winding of the electric motor. A drive command is output to the self-extinguishing element, the current flowing through the first self-extinguishing element is detected by the current detector, and the detected current value obtained by this current detector is compared with the reference current value by the comparison / determination means. A comparison is made to determine whether it is abnormal, and similarly, it is also determined whether the detected current values of the other self-extinguishing elements are also abnormal. Then, when it is determined that the comparison determination means is abnormal, the storage means stores the abnormal self-extinguishing element and the detected current value thereof. Then, the maintenance staff who has been affected by the occurrence of an abnormality identifies the abnormal one of the self-extinguishing elements by reading the data stored in the storage means, and detects the occurrence of the failure based on the detected current value. Analyze the mechanism. As a result, when the operating state of the inverter becomes abnormal, it is possible to easily and quickly restore the operation.
【０００７】[0007]
【実施例】以下、本発明のエレベータの保全装置の実施
例を図に基づいて説明する。図１は本発明のエレベータ
の保全装置の一実施例を示すブロック図、図２は図１の
保全装置の処理手順を示すフローチャート、図３は図１
の保全装置のテストモードと各指令内容の関係を説明す
る図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an elevator maintenance device according to the present invention will be described below with reference to the drawings. 1 is a block diagram showing an embodiment of an elevator maintenance device according to the present invention, FIG. 2 is a flowchart showing a processing procedure of the maintenance device of FIG. 1, and FIG.
It is a figure explaining the relationship between the test mode of the maintenance device of FIG.
【０００８】図１に示すエレベータの駆動装置は、駆動
用電源、例えば三相交流電源１から送られる交流電力を
直流電力に変換するコンバータ２と、このコンバータ２
から出力される直流電力を平滑するコンデンサ３と、平
滑された直流電力を任意の電圧、および周波数の交流電
力に変換する第１の自己消弧素子４ａ〜第６の自己消弧
素子４ｆを有するインバータ４と、このインバータ４か
ら出力される電力により駆動され、図示しない乗かごを
作動させる電動機５と、前記の自己消弧素子４ａ〜４ｆ
のベース電流を制御するベースドライブ回路６と、この
ベースドライブ回路６に駆動指令を与えるマイクロコン
ピュータ７とを含んでいる。The elevator drive apparatus shown in FIG. 1 includes a converter 2 for converting AC power sent from a driving power supply, for example, a three-phase AC power supply 1, into DC power, and this converter 2
And a first self-extinguishing element 4a to a sixth self-extinguishing element 4f for converting the smoothed DC power into AC power having an arbitrary voltage and frequency. The inverter 4, the electric motor 5 driven by the electric power output from the inverter 4 to operate a car (not shown), and the self-extinguishing elements 4a to 4f.
It includes a base drive circuit 6 for controlling the base current of, and a microcomputer 7 for giving a drive command to the base drive circuit 6.
【０００９】そして、本実施例のエレベータの保全装置
は、前記の自己消弧素子４ａ〜４ｆに流れる電流を検出
する電流検出器１１と、平常運転時に用いられる前記の
交流電源１と異なる直流電源からなり、出力電流を制限
する制限抵抗などの電流制限手段を有する判定用電源１
２と、この判定用電源１２と自己消弧素子４ａ〜４ｆの
それぞれを順次接続する切り換え回路１３とを備えてい
る。なお、前記のマイクロコンピュータ７により、電流
検出器１１で得た電流検出値をあらかじめ定められる電
流基準値と比較して異常かどうかを判定する比較判定手
段と、この比較判定手段により異常と判定した場合、前
記の電流検出値を記憶する記憶手段と、前記の比較判定
手段が異常と判定した場合、電動機５の起動を阻止する
起動阻止手段と、乗かごの停止時にのみ比較判定手段の
比較判定動作を行なわせる制御手段とが構成されてい
る。そして、前記の判定用電源１２の電流制限手段によ
り、前記の電流基準値が設定されている。The elevator maintenance system of this embodiment includes a current detector 11 for detecting a current flowing through the self-extinguishing elements 4a to 4f and a DC power source different from the AC power source 1 used during normal operation. And a power source for determination 1 having current limiting means such as a limiting resistor for limiting the output current.
2 and a switching circuit 13 that sequentially connects the determination power source 12 and each of the self-extinguishing elements 4a to 4f. The microcomputer 7 compares the current detection value obtained by the current detector 11 with a predetermined current reference value to determine whether or not there is an abnormality, and this comparison and determination means determines to be abnormal. In this case, the storage means for storing the detected current value, the start blocking means for blocking the start of the electric motor 5 when the comparison / determination means determines an abnormality, and the comparison / determination comparison by the comparison / determination means only when the car is stopped. And a control means for performing the operation. Then, the current reference value is set by the current limiting means of the judgment power supply 12.
【００１０】前記の切り換え回路１３は、コンバータ２
の出力部とインバータ４の入力部との接続、切り離しを
行なう第１の接触器２１と、前記のインバータ４の出力
部と電動機５の入力部との接続、切り離しを行なう第２
の接触器２２と、判定用電源１２の出力部とインバータ
４との接続、切り離しを行なう第３の接触器２３とから
なっている。さらに、この第３の接触器２３は、インバ
ータ４の上側アームの主端子に判定用電源１２の正の電
圧を接続、切り離す第１の接点部３１と、インバータ４
の下側アームの主端子に判定用電源１２の正の電圧を接
続、切り離す第２の接点部３２と、インバータ４の出力
部の主端子に判定用電源１２の正の電圧を接続、切り離
す第３の接点部３３、第４の接点部３４、および第５の
接点部３５と、インバータ４の出力部の主端子に判定用
電源１２の基準電圧を接続、切り離す第６の接点部３
６、第７の接点部３７、および第８の接点部３８とから
なっている。The switching circuit 13 is the converter 2
Of the first contactor 21 for connecting and disconnecting the output part of the inverter 4 and the input part of the inverter 4, and the second contactor 21 for connecting and disconnecting the output part of the inverter 4 and the input part of the electric motor 5.
Contactor 22 and a third contactor 23 for connecting and disconnecting the output part of the judgment power supply 12 and the inverter 4. Furthermore, the third contactor 23 includes a first contact portion 31 for connecting and disconnecting the positive voltage of the determination power supply 12 to the main terminal of the upper arm of the inverter 4, and the inverter 4
The second contact portion 32 for connecting and disconnecting the positive voltage of the judgment power supply 12 to the main terminal of the lower arm, and the second contact portion 32 for connecting and disconnecting the positive voltage of the judgment power supply 12 to the main terminal of the output portion of the inverter 4. The third contact part 33, the fourth contact part 34, the fifth contact part 35, and the sixth contact part 3 for connecting and disconnecting the reference voltage of the determination power supply 12 to the main terminal of the output part of the inverter 4.
6, a seventh contact portion 37, and an eighth contact portion 38.
【００１１】この実施例にあっては、図２に示す処理手
順にしたがってマイクロコンピュータ７の異常判定処理
回路７ａによりインバータ４の自己消弧素子４ａ〜４ｆ
を検査するようになっている。すなわち、手順Ｓ１とし
て、乗かごの停止中で、かつ乗かごに乗客が乗っていな
い場合、マイクロコンピュータ７により第１の接触器２
１へオフ指令を出力してインバータ４をコンバータ２側
から切り離し、第２の接触器２２へオフ指令を出力して
電動機５の巻線によるまわり回路を取り除いた後、手順
Ｓ２として、図３に示すテストモードＭ１〜Ｍ６にした
がって第３の接触器２３に切り換え指令を出力する。例
えばテストモードＭ１では、第１の接点部３１および第
６の接点部３６へオン指令を出力し、他の接点部３２〜
３５、３７、３８へオフ指令を出力する。その結果、イ
ンバータ４の第１の自己消弧素子４ａの入力部に判定用
電源１２の正の電圧が接続され、第１の自己消弧素子４
ａの出力部に判定用電源１２の基準電圧が接続される。
これによって、インバータ４では前記のまわり回路のな
い唯一の閉回路が第１の自己消弧素子４ａで形成される
ので、この閉回路を形成した状態で、電流検出器１１に
より自己消弧素子４ａに流れる電流を検出する。In this embodiment, the self-extinguishing elements 4a-4f of the inverter 4 are controlled by the abnormality determination processing circuit 7a of the microcomputer 7 in accordance with the processing procedure shown in FIG.
Is to be inspected. That is, in step S1, when the car is stopped and no passenger is in the car, the microcomputer 7 causes the first contactor 2 to operate.
1 to output the OFF command to disconnect the inverter 4 from the converter 2 side, to output the OFF command to the second contactor 22 to remove the surrounding circuit formed by the winding of the electric motor 5, and as a step S2, FIG. A switching command is output to the third contactor 23 according to the test modes M1 to M6 shown. For example, in the test mode M1, an ON command is output to the first contact portion 31 and the sixth contact portion 36, and the other contact portions 32 to
An off command is output to 35, 37, and 38. As a result, the positive voltage of the determination power supply 12 is connected to the input portion of the first self-extinguishing element 4a of the inverter 4, and the first self-extinguishing element 4a is connected.
The reference voltage of the determination power supply 12 is connected to the output part of a.
As a result, in the inverter 4, the only closed circuit without the surrounding circuit is formed by the first self-extinguishing element 4a. Therefore, in the state where this closed circuit is formed, the current detector 11 causes the self-extinguishing element 4a. To detect the current flowing through.
【００１２】同様に、テストモードＭ２では第２の自己
消弧素子４ｂで閉回路を形成した状態で自己消弧素子４
ｂに流れる電流を検出し、テストモードＭ３では第３の
自己消弧素子４ｃで閉回路を形成した状態で自己消弧素
子４ｃに流れる電流を検出し、テストモードＭ４では第
４の自己消弧素子４ｄで閉回路を形成した状態で自己消
弧素子４ｄに流れる電流を検出し、テストモードＭ５で
は第５の自己消弧素子４ｅで閉回路を形成した状態で自
己消弧素子４ｅに流れる電流を検出し、テストモードＭ
６では第６の自己消弧素子４ｆで閉回路を形成した状態
で自己消弧素子４ｆに流れる電流を検出するようになっ
ている。Similarly, in the test mode M2, the self-extinguishing element 4 with the closed circuit formed by the second self-extinguishing element 4b.
In the test mode M3, the current flowing in the self-extinguishing element 4c is detected in the state where a closed circuit is formed by the third self-extinguishing element 4c. A current flowing in the self-extinguishing element 4d is detected with the closed circuit formed by the element 4d, and in the test mode M5, a current flowing through the self-extinguishing element 4e in the closed circuit formed by the fifth self-extinguishing element 4e. Detected and test mode M
In No. 6, the current flowing through the self-extinguishing element 4f is detected in the state where the closed circuit is formed by the sixth self-extinguishing element 4f.
【００１３】次いで手順Ｓ４として、前記の電流検出器
１１で検出した各電流検出値が「０」であるかどうかを
判定する。そして前記の電流検出値が「０」であり自己
消弧素子４ａ〜４ｆに導通故障が生じていない場合、手
順Ｓ５として各テストモードＭ１〜Ｍ６にしたがってベ
ースドライブ回路６に駆動指令を順次出力し、手順Ｓ６
として電流検出器１１により自己消弧素子４ａ〜４ｆに
流れる電流をそれぞれ検出し、手順Ｓ７として電流検出
器１１から読み込んだ電流検出値をあらかじめ定められ
る電流基準値と比較し、これらの値の偏差が所定値より
小さい場合、自己消弧素子４ａ〜４ｆに不導通故障がな
く正常であると判定してインバータ４の自己消弧素子４
ａ〜４ｆが作動状態の検査を終了する。Then, in step S4, it is determined whether or not each current detection value detected by the current detector 11 is "0". When the current detection value is "0" and no conduction failure has occurred in the self-extinguishing elements 4a to 4f, drive commands are sequentially output to the base drive circuit 6 according to the test modes M1 to M6 in step S5. , Step S6
As the current detector 11, the currents flowing in the self-extinguishing elements 4a to 4f are respectively detected, and in step S7, the current detection value read from the current detector 11 is compared with a predetermined current reference value, and the deviation of these values is detected. Is smaller than a predetermined value, it is determined that the self-extinguishing elements 4a to 4f are normal with no non-conduction failure, and the self-extinguishing element 4 of the inverter 4 is determined.
a to 4f complete the inspection of the operating state.
【００１４】一方、前記の手順Ｓ７で例えば自己消弧素
子４ａの電流検出値と電流基準値との偏差が所定値と同
等か、または所定値より大きく不導通故障が生じている
場合、手順Ｓ８としてマイクロコンピュータ７により前
記の自己消弧素子４ａを記憶し、手順Ｓ９として前記の
電流検出値を記憶した後、自己消弧素子４ａ〜４ｆの作
動状態の検査を終了する。また、前記の手順Ｓ４で例え
ば自己消弧素子４ａの電流検出値が「０」でなく導通故
障が生じている場合、手順Ｓ１０としてマイクロコンピ
ュータ７により前記の自己消弧素子４ａを記憶し、手順
Ｓ９として前記の電流検出値を記憶した後、自己消弧素
子４ａ〜４ｆの作動状態の検査を終了する。同様に、他
の自己消弧素子４ｂ〜４ｆのいずれかが不導通故障、あ
るいは導通故障を生じた場合、故障した自己消弧素子お
よびその電流検出値をマイクロコンピュータ７により記
憶するようになっている。そして、上記のように自己消
弧素子４ａ〜４ｆのいずれかが不導通故障、あるいは導
通故障を生じた場合、マイクロコンピュータ７より乗か
ご休止指令を出力し、電動機５の起動を阻止する。On the other hand, when the deviation between the detected current value of the self-extinguishing element 4a and the current reference value is equal to the predetermined value or larger than the predetermined value in the step S7, a non-conduction failure occurs, and the step S8 is performed. As a result, the microcomputer 7 stores the self-extinguishing element 4a, stores the detected current value in step S9, and then ends the inspection of the operating states of the self-extinguishing elements 4a to 4f. In step S4, if the current detection value of the self-extinguishing element 4a is not "0" and a conduction failure occurs, the microcomputer 7 stores the self-extinguishing element 4a in step S10, and the procedure is performed. After storing the detected current value as S9, the inspection of the operating states of the self-extinguishing elements 4a to 4f ends. Similarly, when any of the other self-extinguishing elements 4b to 4f has a non-conduction failure or a conduction failure, the microcomputer 7 stores the failed self-extinguishing element and its current detection value. There is. When any of the self-extinguishing elements 4a to 4f has a non-conduction failure or a conduction failure as described above, the microcomputer 7 outputs a car suspension command to prevent the electric motor 5 from starting.
【００１５】このように構成した実施例では、インバー
タ４の作動が異常となったとき、異常発生によりかけつ
けた保守員が、マイクロコンピュータ７により記憶され
るデータを読み出すことにより、自己消弧素子４ａ〜４
ｆのうちの異常なものを特定するとともに、その電流検
出値に基づいて故障発生のメカニズムを解析することが
でき、これによって、容易かつ迅速にインバータ４の復
旧を図ることができる。また、マイクロコンピュータ７
の制御により、乗かごの停止時にのみ比較判定手段の比
較判定動作を行なわなれるので、インバータ４の作動が
異常となった際に、乗かご内に乗客が閉じ込められる事
故を防止できる。In the embodiment thus constructed, when the operation of the inverter 4 becomes abnormal, a maintenance worker who has been informed of the occurrence of the abnormality reads the data stored in the microcomputer 7 to cause the self-extinguishing element 4a. ~ 4
It is possible to identify an abnormal one of f and analyze the mechanism of failure occurrence based on the detected current value thereof, whereby the inverter 4 can be easily and promptly restored. In addition, the microcomputer 7
By the control described above, since the comparison / determination operation of the comparison / determination means is performed only when the car is stopped, it is possible to prevent an accident in which passengers are trapped in the car when the operation of the inverter 4 becomes abnormal.
【００１６】[0016]
【発明の効果】本発明は以上のように構成したので、イ
ンバータの作動が異常となったときに容易かつ迅速に復
旧を図ることができるとともに、乗かごの走行中にイン
バータの作動状態を検査する従来の場合と比べて、乗か
ごの停止時にのみインバータの作動状態の検査を行なう
ことから、インバータの作動が異常となったときに乗か
ご内に乗客が閉じ込められる事故を防止することができ
る。Since the present invention is configured as described above, when the operation of the inverter becomes abnormal, it can be easily and quickly restored, and the operating state of the inverter is inspected while the car is running. Compared to the conventional case, since the inverter operating state is inspected only when the car is stopped, it is possible to prevent accidents in which passengers are trapped in the car when the inverter operation becomes abnormal. .
【図１】本発明のエレベータの保全装置の一実施例を示
すブロック図である。FIG. 1 is a block diagram showing an embodiment of an elevator maintenance device according to the present invention.
【図２】図１の保全装置の処理手順を示すフローチャー
トである。FIG. 2 is a flowchart showing a processing procedure of the maintenance device of FIG.
【図３】図１の保全装置のテストモードと各指令内容の
関係を説明する図である。3 is a diagram for explaining the relationship between the test mode of the maintenance device of FIG. 1 and the content of each command.
１ 三相交流電源（駆動用電源） ２ コンバータ ４ インバータ ４ａ〜４ｆ 自己消弧素子 ５ 電動機 ６ ベースドライブ回路 ７ マイクロコンピュータ １１ 電流検出器 １２ 判定用電源 １３ 切り換え回路 ２１ 第１の接触器 ２２ 第２の接触器 ２３ 第３の接触器 ３１〜３８ 接点部 1 Three-phase AC power supply (driving power supply) 2 Converter 4 Inverter 4a-4f Self-extinguishing element 5 Electric motor 6 Base drive circuit 7 Microcomputer 11 Current detector 12 Judgment power supply 13 Switching circuit 21 First contactor 22 Second Contactor 23 Third contactor 31-38 Contact part
───────────────────────────────────────────────────── フロントページの続き (72)発明者 芦田 昌平 東京都千代田区神田錦町１丁目６番地 株 式会社日立ビルシステムサービス内 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Shohei Ashida 1-6 Kandanishikicho, Chiyoda-ku, Tokyo Inside Hitachi Building System Service Co., Ltd.
Claims (5)
電力に変換するコンバータと、前記直流電力を交流電力
に変換する複数の自己消弧素子を有するインバータと、
このインバータから出力される電力により駆動され、乗
かごを作動させる電動機と、前記自己消弧素子のベース
電流を制御するベースドライブ回路と、このベースドラ
イブ回路に駆動指令を与えるマイクロコンピュータとを
含むエレベータの駆動装置に備えられ、この駆動装置の
保全を行なうエレベータの保全装置において、前記自己
消弧素子に流れる電流を検出する電流検出器と、この電
流検出器で得た電流検出値をあらかじめ定められる電流
基準値と比較して異常かどうかを判定する比較判定手段
と、この比較判定手段により異常と判定される場合、前
記異常な自己消弧素子および前記電流検出値を記憶する
記憶手段と、前記駆動用電源と異なる判定用電源と、こ
の判定用電源に前記自己消弧素子のそれぞれを順次接続
する切り換え回路とを設けたことを特徴とするエレベー
タの保全装置。1. A converter for converting AC power sent from a driving power source into DC power, and an inverter having a plurality of self-extinguishing elements for converting the DC power into AC power.
An elevator including an electric motor driven by electric power output from the inverter to operate a car, a base drive circuit that controls a base current of the self-extinguishing element, and a microcomputer that gives a drive command to the base drive circuit. In a maintenance device for an elevator, which is provided in the drive device for maintenance of the drive device, a current detector for detecting a current flowing through the self-extinguishing element and a current detection value obtained by the current detector are predetermined. A comparison determination unit that determines whether or not the current reference value is abnormal, and a storage unit that stores the abnormal self-extinguishing element and the current detection value when the comparison determination unit determines that the current is abnormal, A judgment power supply different from the driving power supply, and a switching circuit sequentially connecting each of the self-extinguishing elements to the judgment power supply. Maintenance device for an elevator, wherein a provided.
インバータの入力部との接続、切り離しを行なう第１の
接触器と、前記インバータの出力部と電動機の入力部と
の接続、切り離しを行なう第２の接触器と、判定用回路
の出力部と前記自己消弧素子のそれぞれとの接続、切り
離しを行なう第３の接触器とからなることを特徴とする
請求項１記載のエレベータの保全装置。2. A switching circuit comprising: a first contactor for connecting and disconnecting an output section of a converter and an input section of an inverter; and a first contactor for connecting and disconnecting an output section of the inverter and an input section of an electric motor. 2. The elevator maintenance device according to claim 1, further comprising a second contactor, and a third contactor for connecting and disconnecting the output of the determination circuit and each of the self-extinguishing elements.
定用電源が前記三相交流電源とは異なる直流電源からな
ることを特徴とする請求項１記載のエレベータの保全装
置。3. The elevator maintenance device according to claim 1, wherein the driving power source is a three-phase AC power source, and the determination power source is a DC power source different from the three-phase AC power source.
制限手段を有することを特徴とする請求項１記載のエレ
ベータの保全装置。4. The elevator maintenance device according to claim 1, wherein the power source for determination has current limiting means for limiting an output current.
動させる制御手段と、前記比較判定手段によりインバー
タの自己消弧素子を異常と判定した場合に電動機の起動
を阻止する起動阻止手段とを有することを特徴とする請
求項１記載のエレベータの保全装置。5. A control means for activating the comparison / determination means only when the car is stopped, and a start prevention means for preventing the start of the electric motor when the comparison / determination means determines that the self-extinguishing element of the inverter is abnormal. The elevator maintenance device according to claim 1, further comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16463993A JP3323589B2 (en) | 1993-07-02 | 1993-07-02 | Elevator maintenance equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16463993A JP3323589B2 (en) | 1993-07-02 | 1993-07-02 | Elevator maintenance equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0717675A true JPH0717675A (en) | 1995-01-20 |
| JP3323589B2 JP3323589B2 (en) | 2002-09-09 |
Family
ID=15797016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16463993A Expired - Fee Related JP3323589B2 (en) | 1993-07-02 | 1993-07-02 | Elevator maintenance equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3323589B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012036003A (en) * | 2010-08-11 | 2012-02-23 | Toshiba Elevator Co Ltd | Control device for elevator |
-
1993
- 1993-07-02 JP JP16463993A patent/JP3323589B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012036003A (en) * | 2010-08-11 | 2012-02-23 | Toshiba Elevator Co Ltd | Control device for elevator |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3323589B2 (en) | 2002-09-09 |
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