JP4575039B2

JP4575039B2 - Elevator control device

Info

Publication number: JP4575039B2
Application number: JP2004172737A
Authority: JP
Inventors: 一弘堀崎
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 2004-06-10
Filing date: 2004-06-10
Publication date: 2010-11-04
Anticipated expiration: 2024-06-10
Also published as: JP2005350217A

Description

この発明は、制御電源により電源が供給される機器の電源線および信号線の大地に対する絶縁試験を行うためのエレベータの制御装置に関するものである。 The present invention relates to an elevator control device for performing an insulation test on the ground of a power supply line and a signal line of equipment to which power is supplied by a control power supply.

従来のエレベータの制御装置において、制御電源により電源が供給される機器の電源線および信号線の大地に対する絶縁試験をする際には、制御電源のグランドに接続されている接地線を外してから絶縁試験を実施していた（例えば、特許文献１参照）。 In conventional elevator control devices, when conducting an insulation test on the ground of the power supply lines and signal lines of equipment that is powered by the control power supply, remove the ground wire connected to the ground of the control power supply before insulation. The test was performed (for example, refer patent document 1).

特開平６−１４４７３７号公報JP-A-6-144737

このため、試験終了後は、接地線を復旧する作業が必要となるが、この際に接地線の誤配線や復旧の忘れ等の可能性があった。 For this reason, after the test is completed, it is necessary to restore the grounding wire. At this time, there is a possibility that the grounding wire is miswired or the restoration is forgotten.

この発明は上述した従来例に係る問題点を解消するためになされたもので、接地線を外す作業をすることなく絶縁試験ができ、試験後も接地線を元に戻す復旧作業を不要にして、作業の効率化と復旧の作業忘れを防止することができるエレベータの制御装置を提供することを目的とする。 The present invention was made to solve the problems associated with the above-described conventional example, so that an insulation test can be performed without removing the ground wire, and a restoration work for returning the ground wire to the original state after the test is unnecessary. It is an object of the present invention to provide an elevator control device that can improve work efficiency and prevent recovery work from being forgotten.

この発明に係るエレベータの制御装置は、エレベータの制御回路に電源供給する制御電源を備え、当該制御電源により電源が供給される機器の電源線および信号線の大地に対する絶縁試験を行うようにしたエレベータの制御装置において、前記制御電源に電源が投入されているときだけ付勢されるリレーを備え、前記制御電源のグランド側を大地に接地させる接地線に、前記リレーの付勢時に接点閉成し、消勢時に接点開放するリレー接点を介在させて、電源ＯＦＦ時に前記リレー接点が開放することで、前記絶縁試験を可能にし、電源投入時は前記リレー接点が閉成することで前記絶縁試験実施後の復旧作業を不要にしたことを特徴とする。 An elevator control device according to the present invention includes a control power supply that supplies power to an elevator control circuit, and performs an insulation test on the ground of power supply lines and signal lines of equipment to which power is supplied by the control power supply. The control device includes a relay that is energized only when the control power source is turned on, and a contact is closed to a ground wire that grounds the ground side of the control power source to the ground when the relay is energized. The relay contact is opened when the power is turned off by interposing a relay contact that opens when the power is turned off, enabling the insulation test, and when the power is turned on, the relay contact is closed to perform the insulation test. It is characterized by eliminating the need for later recovery work .

この発明によれば、絶縁試験時に接地線を外す作業をすることなく試験ができ、試験後も接地線を元に戻す復旧作業がいらないため、作業の効率化と復旧の作業忘れを防止することができる。 According to the present invention, the test can be performed without removing the grounding wire during the insulation test, and the restoration work to restore the grounding wire is not required after the test. Can do.

以下、この発明の実施の形態を図面に基づいて説明する。
実施の形態１．
図１は、この発明の実施の形態１に係るエレベータの制御装置を示す構成図である。図１に示すように、三相交流電源が、メインブレーカー１及び電磁接触器２を介してコンバータ３に供給されて、コンバータ３は交流電力を直流電力に変換する。コンバータ３により変換された直流電力は、平滑コンデンサ４を介してインバータ５に供給されて、可変電圧可変周波数の交流電力に変換され、モータ６に供給される。モータ６にはシーブ７が直結されており、シーブ７に巻き掛けられたロープの一端にはかご１４が設けられ、他端には釣合おもり１３が設けられている。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Embodiment 1 FIG.
1 is a configuration diagram illustrating an elevator control apparatus according to Embodiment 1 of the present invention. As shown in FIG. 1, a three-phase AC power supply is supplied to a converter 3 via a main breaker 1 and an electromagnetic contactor 2, and the converter 3 converts AC power into DC power. The DC power converted by the converter 3 is supplied to the inverter 5 through the smoothing capacitor 4, converted into AC power having a variable voltage and variable frequency, and supplied to the motor 6. A sheave 7 is directly connected to the motor 6, a car 14 is provided at one end of a rope wound around the sheave 7, and a counterweight 13 is provided at the other end.

また、前記三相交流電源には、メインブレーカー１を介して制御電源８が接続され、制御電源８は、エレベータ制御回路１０及び安全回路１２に電源供給するようになされている。また、エレベータ制御回路１０からの駆動指令に基づいてインバータ駆動回路１１によりインバータ５を制御するようになされている。 Further, a control power supply 8 is connected to the three-phase AC power supply via the main breaker 1, and the control power supply 8 supplies power to the elevator control circuit 10 and the safety circuit 12. The inverter drive circuit 11 controls the inverter 5 based on a drive command from the elevator control circuit 10.

さらに、前記制御電源８に電源が投入されているときだけ付勢されるリレー９が備えられ、制御電源８のグランド側を大地に接地させる接地線に、リレー９の付勢時に接点閉成し、消勢時に接点開放するリレー接点９ａが介在されていて、制御電源８の電源出力に接続されている電源線及び信号線の絶縁試験を実施するようになされている。 Further, a relay 9 that is energized only when the control power supply 8 is energized is provided, and a contact is closed to a ground wire that grounds the ground side of the control power supply 8 to the ground when the relay 9 is energized. In addition, a relay contact 9a that opens the contact at the time of deactivation is interposed, and an insulation test of the power supply line and the signal line connected to the power supply output of the control power supply 8 is performed.

次に、図１に示す構成に係る動作について説明する。電源ＯＮ時は、制御電源８からリレー９のコイルに電圧が印加され、リレー接点９ａが閉じることにより制御電源８のグランドが大地に接地される。他方、電源ＯＦＦ時は、制御電源８からリレー９のコイルヘの電圧供給が途絶えるため、リレー接点９ａが開放する。 Next, the operation according to the configuration shown in FIG. 1 will be described. When the power is turned on, a voltage is applied from the control power supply 8 to the coil of the relay 9, and the ground of the control power supply 8 is grounded by closing the relay contact 9a. On the other hand, when the power is off, the voltage supply from the control power supply 8 to the coil of the relay 9 is interrupted, so that the relay contact 9a is opened.

従って、実施の形態１によれば、電源ＯＦＦ時は、制御電源８からリレー９のコイルヘの電圧供給が途絶えるため、リレー接点９ａが開放し、制御電源８の電源出力に接続されている電源線及び信号線の絶縁試験を実施することができ、試験実施後は、電源を投入するだけでリレー９のリレー接点９ａが閉じるため、制御電源８のグランドを接地するための復旧作業が必要となくなり、復旧作業時の誤結線および復旧忘れを防止することができる。 Therefore, according to the first embodiment, when the power supply is turned off, the voltage supply from the control power supply 8 to the coil of the relay 9 is interrupted, so the relay contact 9a is opened and the power supply line connected to the power supply output of the control power supply 8 is used. In addition, after the test is performed, the relay contact 9a of the relay 9 is closed simply by turning on the power, so that no recovery work for grounding the control power supply 8 is required. In addition, it is possible to prevent erroneous connection and forgetting to restore during restoration work.

実施の形態２．
図２は、この発明の実施の形態２に係るエレベータの制御装置を示す構成図である。図２に示す実施の形態２において、図１に示す実施の形態１と同一部分は同一符号を付してその説明は省略する。新たな構成として、この実施の形態２では、リレー９の付勢時に接点閉成し、消勢時に接点開放する補助接点９ｂと、補助接点９ｂの接点閉成時に点灯する発光素子１５とをさらに備えている。 Embodiment 2. FIG.
FIG. 2 is a configuration diagram illustrating an elevator control apparatus according to Embodiment 2 of the present invention. In the second embodiment shown in FIG. 2, the same parts as those in the first embodiment shown in FIG. As a new configuration, the second embodiment further includes an auxiliary contact 9b that closes the contact when the relay 9 is energized and opens the contact when the relay 9 is de-energized, and a light-emitting element 15 that lights when the contact of the auxiliary contact 9b is closed. I have.

従って、実施の形態２によれば、リレー９に補助接点９ｂを設け、補助接点９ｂの接点閉成時に点灯する発光素子１５を設けることにより、補助接点９ｂが閉じた場合だけ発光素子１５を点灯させてリレー９が動作していることを確認できる。 Therefore, according to the second embodiment, the relay 9 is provided with the auxiliary contact 9b, and the light emitting element 15 that is turned on when the auxiliary contact 9b is closed is provided, so that the light emitting element 15 is turned on only when the auxiliary contact 9b is closed. Thus, it can be confirmed that the relay 9 is operating.

実施の形態３．
図３は、この発明の実施の形態３に係るエレベータの制御装置を示す構成図である。図３に示す実施の形態３において、図２に示す実施の形態２と同一部分は同一符号を付してその説明は省略する。この実施の形態３では、図２に示す実施の形態２における補助接点９ｂの出力をエレベータ制御回路１０が取り込み、リレー９が動作していない場合のエレベータの運行の制御およびエラー表示を行うようになされている。なお、図３においては、図２に示す発光素子１５が省略されているが、図２に示す実施の形態２と同様に設けてもよい。 Embodiment 3 FIG.
FIG. 3 is a block diagram showing an elevator control apparatus according to Embodiment 3 of the present invention. In the third embodiment shown in FIG. 3, the same parts as those in the second embodiment shown in FIG. In the third embodiment, the elevator control circuit 10 takes in the output of the auxiliary contact 9b in the second embodiment shown in FIG. 2, and controls the operation of the elevator and displays an error when the relay 9 is not operating. Has been made. In FIG. 3, the light emitting element 15 shown in FIG. 2 is omitted, but it may be provided similarly to the second embodiment shown in FIG.

従って、実施の形態３によれば、リレー９の補助接点９ｂの出力をエレベータ制御回路１０に取り込み、エレベータの運行の制御や制御装置にエラー出力を表示させることを可能にすることができる。 Therefore, according to the third embodiment, the output of the auxiliary contact 9b of the relay 9 can be taken into the elevator control circuit 10 and the operation of the elevator can be controlled and an error output can be displayed on the control device.

この発明の実施の形態１に係るエレベータの制御装置を示す構成図である。It is a block diagram which shows the control apparatus of the elevator which concerns on Embodiment 1 of this invention. この発明の実施の形態２に係るエレベータの制御装置を示す構成図である。It is a block diagram which shows the control apparatus of the elevator which concerns on Embodiment 2 of this invention. この発明の実施の形態３に係るエレベータの制御装置を示す構成図である。It is a block diagram which shows the control apparatus of the elevator which concerns on Embodiment 3 of this invention.

Explanation of symbols

１メインブレーカー、２電磁接触器、３コンバータ、４平滑コンデンサ、５インバータ、６モータ、７シーブ、８制御電源、９リレー、９ａリレー接点、９ｂ補助接点、１０エレベータ制御回路、１１インバータ駆動回路、１２安全回路、１３釣合おもり、１４かご。 1 main breaker, 2 magnetic contactor, 3 converter, 4 smoothing capacitor, 5 inverter, 6 motor, 7 sheave, 8 control power supply, 9 relay, 9a relay contact, 9b auxiliary contact, 10 elevator control circuit, 11 inverter drive circuit, 12 safety circuits, 13 counterweights, 14 baskets.

Claims

In an elevator control apparatus comprising a control power supply for supplying power to an elevator control circuit, and performing an insulation test on the ground of a power supply line and a signal line of equipment to which power is supplied by the control power supply,
Provided with a relay that is energized only when power is supplied to the control power supply, the contact is closed when the relay is energized, and the contact is made when the relay is de-energized to the ground line that grounds the ground side of the control power By interposing a relay contact to be opened, the relay contact is opened when the power is turned off to enable the insulation test, and when the power is turned on, the relay contact is closed to perform recovery work after the insulation test is performed. An elevator control device characterized by being unnecessary .

In the elevator control device according to claim 1,
An auxiliary contact that closes when the relay is energized and opens when de-energized;
A control device for an elevator, further comprising: a light emitting element that is turned on when the auxiliary contact is closed.

The elevator control device according to claim 2,
The said control circuit takes in the output of the said auxiliary | assistant contact, performs the operation of an elevator when a relay is not operate | moving, and an error display. The elevator control apparatus characterized by the above-mentioned.