JP2008081316A - Backup operation circuit in case of sequencer power supply failure in overhead crane - Google Patents

Backup operation circuit in case of sequencer power supply failure in overhead crane Download PDF

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JP2008081316A
JP2008081316A JP2007131546A JP2007131546A JP2008081316A JP 2008081316 A JP2008081316 A JP 2008081316A JP 2007131546 A JP2007131546 A JP 2007131546A JP 2007131546 A JP2007131546 A JP 2007131546A JP 2008081316 A JP2008081316 A JP 2008081316A
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power supply
sequencer
emergency
overhead crane
backup
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Eisaku Kawajiri
栄作 川尻
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Hitachi Plant Technologies Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a backup operation circuit in case of sequencer power supply failure in an overhead crane, enabling backup operation of the overhead crane even in case of sequencer power supply failure. <P>SOLUTION: An emergency d.c. stabilizing power supply AVR2 for backup is additionally connected in parallel to an ordinary d.c. stabilizing power supply AVR1, and the plus side separate power supplies of two d.c. stabilizing power supplies of the ordinary d.c. stabilizing power supply AVR1 and emergency d.c. stabilizing power supply AVR2 are connected to a 2-input 1-output power diode PD. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、天井クレーンにおけるシーケンサ電源故障時のバックアップ運転回路に関し、特に、天井クレーンの運転制御において、直流安定化電源回路に使用している電解コンデンサ等の電子機器の経年劣化による故障、或いは偶発的な故障が発生した場合でもバックアップ運転回路に切り替えて天井クレーンを所定位置まで安全に運行できるようにした天井クレーンにおけるシーケンサ電源故障時のバックアップ運転回路に関するものである。   The present invention relates to a backup operation circuit at the time of sequencer power supply failure in an overhead crane, and in particular, in operation control of the overhead crane, failure due to aging deterioration of an electronic device such as an electrolytic capacitor used in a DC stabilized power supply circuit, or accidental occurrence. The present invention relates to a backup operation circuit at the time of a sequencer power supply failure in an overhead crane in which an overhead crane can be safely operated to a predetermined position by switching to a backup operation circuit even when a general failure occurs.

従来、天井クレーンは、制御部がシーケンサ制御が主流となり直流２４Ｖであることから、図２に示すように交流操作電源から直流安定化電源によりＤＣ２４Ｖを形成し、シーケンサを介して制御するようにした無接点シーケンスによる運転を採用している。   Conventionally, as for the overhead crane, sequencer control is mainstream and DC is 24V, so as shown in Fig. 2, DC24V is formed from AC operation power supply by DC stabilized power supply and controlled via sequencer. The operation by contactless sequence is adopted.

しかしながら、シーケンサ、直流安定化電源回路に電解コンデンサ等の電子機器を使用していることから経年劣化、偶発的な故障が発生した場合、クレーンは動作不能となり、特に生産ラインのクレーンでは無線操作運転が主流となっているため、クレーンの故障位置によっては故障したクレーンへ作業者が容易に乗り込み、修理することができないため、復旧に危険と多大な時間がかかるという問題があった。     However, because electronic devices such as electrolytic capacitors are used in sequencers and DC-stabilized power supply circuits, when aged deterioration or accidental failure occurs, the crane becomes inoperable, especially in production line cranes. Therefore, depending on the failure position of the crane, the operator cannot easily get on the broken crane and repair it, so that there is a problem that it takes a lot of time and time to recover.

本発明は、天井クレーンにおけるシーケンサ直流安定化電源回路の有する問題点に鑑み、直流安定化電源にバックアップ用直流安定化電源を追加してＤＣ２４Ｖ電源の共通電源を作成し、シーケンサ回路と非常運転用リレーシーケンス回路を追加する、或いは直流安定化電源に、バックアップ用として非常用バッテリーＤＣ１２Ｖの２台を直列的に接続して追加することで、シーケンサ電源故障時においても天井クレーンのバックアップ運転を可能とした天井クレーンにおけるシーケンサ電源故障時のバックアップ運転回路を提供することを目的とする。   In view of the problems of a sequencer DC stabilized power supply circuit in an overhead crane, the present invention creates a common power supply for a DC24V power supply by adding a backup DC stabilized power supply to the DC stabilized power supply. By adding a relay sequence circuit or connecting two DC12V emergency batteries connected in series to a DC stabilized power supply as a backup, backup operation of the overhead crane is possible even when the sequencer power supply fails An object of the present invention is to provide a backup operation circuit in the case of a sequencer power supply failure in an overhead crane.

上記目的を達成するため、本発明の天井クレーンにおけるシーケンサ電源故障時のバックアップ運転回路は、通常用直流安定化電源に、バックアップ用としての非常用直流安定化電源を並列に追加接続し、２つの直流安定化電源のプラス側別電源を２入力１出力のパワーダイオードに接続して構成したことを特徴とする。   In order to achieve the above object, the backup operation circuit in the case of a sequencer power supply failure in the overhead crane according to the present invention additionally includes an emergency DC stabilized power supply for backup as an ordinary DC stabilized power supply connected in parallel. It is characterized in that it is configured by connecting a power supply on the plus side of a direct current stabilized power supply to a power diode having two inputs and one output.

この場合、非常用直流安定化電源の１次側に電源を供給し、２次側の出力を通常時遮断するように構成することができる。   In this case, it can be configured such that power is supplied to the primary side of the emergency stabilized DC power supply and the output on the secondary side is shut off during normal operation.

また、同じ目的を達成するため、本発明の天井クレーンにおけるシーケンサ電源故障時のバックアップ運転回路は、通常用直流安定化電源に、バックアップ用電源として非常用バッテリーを追加し、通常時シーケンサ電源とバッテリーに対して電源を供給し、通常用直流安定化電源故障時に非常用バッテリーからシーケンサ電源に電源を供給するように構成したことを特徴とする。   In order to achieve the same object, the backup operation circuit when the sequencer power supply fails in the overhead crane of the present invention adds an emergency battery as a backup power supply to the normal DC stabilized power supply. Is configured such that power is supplied from the emergency battery to the sequencer power supply when a normal DC stabilized power supply fails.

この場合、バックアップ用電源として非常用ＤＣ１２Ｖバッテリーの２台を直列的に接続して構成することができる。   In this case, two emergency DC12V batteries can be connected in series as backup power supplies.

本発明の天井クレーンにおけるシーケンサ電源故障時のバックアップ運転回路によれば、通常用直流安定化電源に、バックアップ用としての非常用直流安定化電源を並列に追加接続し、２つの直流安定化電源のプラス側別電源を２入力１出力のパワーダイオードに接続して構成しているから、通常用直流安定化電源は、リレーのｏｎ／ｏｆｆにより電圧監視し、その接点を非常用直流安定化電源の母線にｂ接点を割り込むことで通常用直流安定化電源の故障時に非常用直流安定化電源に切替電源を供給できるようにしているので、直流安定化電源回路に電解コンデンサ等の電子機器の経年劣化、偶発的な故障等が発生した場合でも、バックアップ運転回路に切り替えて天井クレーンを所定位置まで安全に運行でき、ここで作業者による修理などを安全に行うことができる。   According to the backup operation circuit at the time of failure of the sequencer power supply in the overhead crane of the present invention, an emergency DC stabilized power supply for backup is additionally connected in parallel to the normal DC stabilized power supply, and two DC stabilized power supplies are connected. Since the power supply for the positive side is connected to a power diode with 2 inputs and 1 output, the DC stabilized power supply for normal use monitors the voltage by turning the relay on and off, and the contact point of the emergency stabilized DC power supply By switching the b contact into the bus, switching power can be supplied to the emergency DC stabilized power supply in the event of failure of the normal DC stabilized power supply, so the aging degradation of electronic devices such as electrolytic capacitors in the DC stabilized power circuit Even if an accidental failure occurs, the overhead crane can be safely operated to the specified position by switching to the backup operation circuit. It can be carried out safely.

また、非常用直流安定化電源の１次側に電源を供給し、２次側の出力を通常時遮断するようにすることで、非常用直流安定化電源の経年劣化を防止することができる。   Further, by supplying power to the primary side of the emergency stabilized DC power supply and shutting off the output on the secondary side at the normal time, it is possible to prevent deterioration of the emergency stabilized DC power supply over time.

また、本発明の天井クレーンにおけるシーケンサ電源故障時のバックアップ運転回路によれば、通常用直流安定化電源に、バックアップ用電源として非常用バッテリーを追加し、通常時シーケンサ電源とバッテリーに対して電源を供給し、通常用直流安定化電源故障時に非常用バッテリーからシーケンサ電源に電源を供給するように構成しているから、簡単な構成で電源故障時においてもシーケンサに安定した電源を供給して天井クレーンを所定位置まで安全に運行でき、ここで作業者による修理などを安全に行うことができる。   Further, according to the backup operation circuit when the sequencer power supply failure in the overhead crane of the present invention, an emergency battery is added as a backup power supply to the normal DC stabilized power supply, and the normal sequencer power supply and the battery are powered. Supplying power to the sequencer power supply from the emergency battery in the event of failure of the normal DC stabilized power supply, the overhead crane can supply a stable power supply to the sequencer even in the event of a power failure with a simple configuration Can be safely operated to a predetermined position, and repair or the like by an operator can be performed safely.

また、バックアップ用電源として非常用ＤＣ１２Ｖバッテリーの２台を直列的に接続して構成することで、バックアップ電源が市販のバッテリーを組み合わせるだけで簡易に構成できるので安価に提供することができる。   In addition, by configuring two backup DC 12V batteries in series as backup power supplies, the backup power supply can be simply configured by combining commercially available batteries, so that it can be provided at low cost.

以下、本発明の天井クレーンにおけるシーケンサ電源故障時のバックアップ運転回路の実施の形態を、図面に基づいて説明する。   DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of a backup operation circuit when a sequencer power supply fails in an overhead crane according to the present invention will be described with reference to the drawings.

図１に、本発明の天井クレーンにおけるシーケンサ電源故障時のバックアップ運転回路の第１実施例を示す。
本発明では、通常用直流安定化電源ＡＶＲ１に、バックアップ用としての非常用直流安定化電源ＡＶＲ２を並列的に追加接続し、通常用直流安定化電源ＡＶＲ１及び非常用直流安定化電源ＡＶＲ２の２つの直流安定化電源のプラス側別電源を、２入力１出力のパワーダイオードＰＤに接続する。
これにより電源の廻り回路を解消することができる。
通常用直流安定化電源ＡＶＲ１は、リレーＡＶＲＸのｏｎ／ｏｆｆにより電圧監視し、その接点を非常用直流安定化電源の母線にｂ接点を割り込むことで通常用直流安定化電源ＡＶＲ１の故障時に非常用直流安定化電源ＡＶＲ２に切替電源を供給できるようにするようにする。 FIG. 1 shows a first embodiment of a backup operation circuit at the time of sequencer power supply failure in the overhead crane of the present invention.
In the present invention, an emergency DC stabilized power supply AVR2 for backup is additionally connected in parallel to the normal DC stabilized power supply AVR1, and two of the normal DC stabilized power supply AVR1 and the emergency DC stabilized power supply AVR2 are connected. The power supply for the plus side of the DC stabilized power supply is connected to the power diode PD having two inputs and one output.
As a result, the circuit around the power source can be eliminated.
The normal DC stabilized power supply AVR1 monitors the voltage by turning on / off the relay AVRX, and interrupts the normal contact DC stabilized power supply AVR1 by breaking the contact b into the bus of the emergency DC stabilized power supply. A switching power supply can be supplied to the DC stabilized power supply AVR2.

また、非常用直流安定化電源ＡＶＲ２の１次側に電源を供給し、２次側の出力を通常時遮断することで非常用直流安定化電源の経年劣化を防止している。   Further, the power supply is supplied to the primary side of the emergency DC stabilized power supply AVR2, and the secondary side output is cut off at normal times, thereby preventing the emergency DC stabilized power supply from aged.

シーケンサが故障した場合にハードシーケンス回路へ切り替えるために、シーケンサ内部にシーケンサ正常状態を１点出力するプログラムを作成し、この出力に接続したリレー（シーケンサ異常デクローズ）のｂ接点をハードシーケンス側コモンの電源供給条件を設け切替運転を可能とする。   In order to switch to the hard sequence circuit if the sequencer fails, create a program that outputs one sequencer normal state inside the sequencer, and connect the b contact of the relay (sequencer error declose) connected to this output to the hard sequence side common A power supply condition is provided to enable switching operation.

通常用直流安定化電源ＡＶＲ１にＡＣ１００Ｖの電流が流れると、リレーＡＶＲＸがｏｎとなり、通常用直流安定化電源ＡＶＲ１に接続される接点はａ接点で、通常用直流安定化電源ＡＶＲ１からパワーダイオードＰＤに電力は供給され、モータは正常に動作して、クレーンは走行するが、非常用直流安定化電源ＡＶＲ２側に接続されるリレーＡＶＲＸの接点はｂ接点なのでｏｆｆとなり、非常用直流安定化電源ＡＶＲ２からの電源供給は停止する。   When a current of 100 VAC flows through the normal DC stabilized power supply AVR1, the relay AVRX is turned on, and the contact connected to the normal DC stabilized power supply AVR1 is a contact, from the normal DC stabilized power supply AVR1 to the power diode PD. Power is supplied, the motor operates normally, and the crane runs, but the contact of the relay AVRX connected to the emergency DC stabilized power supply AVR2 side is off because it is a b contact, and from the emergency DC stabilized power supply AVR2 The power supply of is stopped.

しかし、通常用直流安定化電源ＡＶＲ１に、電解コンデンサ等の電子機器の経年劣化或いは偶発的な故障にて異常が発生した場合、リレーＡＶＲＸの電圧はオフとなり、リレーＡＶＲＸもｏｆｆとなる。これにより、通常用直流安定化電源ＡＶＲ１からのモータへの電力供給は停止するも、非常用直流安定化電源ＡＶＲ２側に接続されるリレーＡＶＲＸの接点はｂ接点なのでｏｎとなり、非常用直流安定化電源ＡＶＲ２からパワーダイオードＰＤに電力が供給されてモータは正常に動作して、クレーンは走行することができる。
このようにして、通常用直流安定化電源ＡＶＲ１、非常用直流安定化電源ＡＶＲ２のいずれか一方から電源がシーケンサ母線を経由して供給されるのでクレーンの継続運転を行うことができる。 However, when an abnormality occurs in the normal DC stabilized power supply AVR1 due to aging or accidental failure of an electronic device such as an electrolytic capacitor, the voltage of the relay AVRX is turned off and the relay AVRX is also turned off. As a result, the power supply to the motor from the normal DC stabilized power supply AVR1 is stopped, but the contact of the relay AVRX connected to the emergency DC stabilized power supply AVR2 side is the b contact, so that the emergency DC stabilization is performed. Electric power is supplied from the power source AVR2 to the power diode PD, the motor operates normally, and the crane can travel.
In this way, since the power is supplied from either the normal DC stabilized power supply AVR1 or the emergency DC stabilized power supply AVR2 via the sequencer bus, the crane can be continuously operated.

また、シーケンサ及びインバータＩＮＶに電源が供給されると、シーケンサから「シーケンサ正常出力」信号がｏｎされ、バックアップ用のリレー回路であるバックアップ基板及び非常用母線には電流が流れない。これは非常用母線に接続されたリレーＳＥＱＲＵＮＸがｂ接点なので「正常時ｏｆｆ」となり、バックアップ基板に電流が流れていないので機能せず、非常用母線に電流が流れないものとなるためである。   When power is supplied to the sequencer and the inverter INV, the “sequencer normal output” signal is turned on from the sequencer, and no current flows through the backup board and the emergency bus that are the relay circuits for backup. This is because the relay SEQRUNX connected to the emergency bus is “b” contact, so “normally off”, because no current flows through the backup board, it does not function, and no current flows through the emergency bus.

しかし、シーケンサに異常が発生した場合、リレーＳＥＱＲＵＮＸの接点がｂ接点なので「異常時ｏｎ」となり、非常用母線に電流が流れ、バックアップ用のリレー回路での運転が可能となる。
このように、本発明は通常用直流安定化電源ＡＶＲ１の電解コンデンサ等の電子機器の故障時或いはシーケンサの異常時において、リレーＡＶＲＸ或いはＳＥＱＲＵＮＸの接点の切り替えで継続してインバータＩＮＶ及びモータへ電源が供給されるので、クレーンを継続走行させることができる。 However, when an abnormality occurs in the sequencer, since the contact of the relay SEQRUNX is the b contact, it is “on during an abnormality”, a current flows through the emergency bus, and the operation with the backup relay circuit becomes possible.
As described above, the present invention continuously switches the contact of the relay AVRX or the SEQRUNX when the electronic device such as the electrolytic capacitor of the normal DC stabilized power supply AVR1 fails or when the sequencer malfunctions, and the power is continuously supplied to the inverter INV and the motor. Since it is supplied, the crane can be continuously run.

図２，３に、本発明の天井クレーンにおけるシーケンサ電源故障時のバックアップ運転回路の第２実施例を示す。
この第２実施例は、通常用直流安定化電源にバックアップ用として非常用ＤＣ１２Ｖバッテリーの２台並列に追加接続して、ＤＣ２４Ｖ電源の共通電源を作成し、シーケンサ電源１次側にＤＡ／ＤＡコンバータを追加して直流安定化電源故障時のバックアップ運転を可能とするものである。 2 and 3 show a second embodiment of the backup operation circuit when the sequencer power supply fails in the overhead crane of the present invention.
In the second embodiment, two emergency DC12V batteries are connected in parallel to a normal DC stabilized power supply as a backup to create a common power supply of DC24V power supply, and a DA / DA converter on the primary side of the sequencer power supply Is added to enable backup operation when a DC stabilized power supply fails.

天井クレーンにおけるシーケンサ電源故障時のバックアップ運転では、通常用直流安定化電源が正常に作動している場合は、図２のＡに示すように、非常用ＤＣ１２Ｖバッテリー２台とシーケンサ電源側に電源を供給して正常運転を行いつつ、非常用ＤＣ１２Ｖバッテリーにも充電するようにする。
そして、通常用直流安定化電源を構成する電解コンデンサ等の電子機器の経年劣化、偶発的な故障が発生して電源供給不能になった場合、図３のＢに示すように、非常用ＤＣ１２Ｖバッテリー２台からシーケンサにＤＡ／ＤＡコンバータを介して電源を供給することができる。
これにより、天井クレーンを所定の位置まで安全に運行して、ここで作業者による修理などを安全に行うことができる。 In the backup operation when the sequencer power supply fails in the overhead crane, if the normal DC stabilized power supply is operating normally, as shown in Fig. 2A, power is supplied to the two emergency DC12V batteries and the sequencer power supply side. While supplying and performing normal operation, the emergency DC12V battery is also charged.
When an electronic device such as an electrolytic capacitor constituting an ordinary DC stabilized power supply is deteriorated over time or accidentally failed, the power supply cannot be supplied as shown in FIG. 3B. Power can be supplied from two units to the sequencer via a DA / DA converter.
Thereby, an overhead crane can be safely operated to a predetermined position, and repairs by an operator can be performed safely here.

なお、この場合、バッテリーの特徴として、出力電圧の変動が発生し、一定電圧をシーケンサに供給できないが、ＤＡ／ＤＡコンバータを経由させることでシーケンサに安定した電源を供給することができる。   In this case, as a feature of the battery, the output voltage fluctuates and a constant voltage cannot be supplied to the sequencer. However, a stable power source can be supplied to the sequencer via the DA / DA converter.

以上、本発明の天井クレーンにおけるシーケンサ電源故障時のバックアップ運転回路について、複数の実施例に基づいて説明したが、本発明は上記実施例に記載した構成に限定されるものではなく、その趣旨を逸脱しない範囲において適宜その構成を変更或いは実施例を組み合わせることができるものである。   As mentioned above, although the backup operation circuit at the time of the sequencer power supply failure in the overhead crane of the present invention has been described based on a plurality of embodiments, the present invention is not limited to the configuration described in the above embodiments, In the range which does not deviate, the structure can be changed appropriately or the embodiments can be combined.

本発明の天井クレーンにおけるシーケンサ電源故障時のバックアップ運転回路は、シーケンサ、直流安定化電源回路に使用している電解コンデンサ等の電子機器の経年劣化等にて故障が発生した場合でもバックアップ運転回路に切り替えて運転を継続できるという特性を有していることから、天井クレーンの安全運転の用途に好適に用いることができる。   The backup operation circuit at the time of failure of the sequencer power supply in the overhead crane of the present invention is a backup operation circuit even when a failure occurs due to aging deterioration of electronic devices such as electrolytic capacitors used in the sequencer and DC stabilized power supply circuit. Since it has the characteristic that it can switch and continue driving | running, it can be used suitably for the use of the safe operation of an overhead crane.

本発明の天井クレーンにおけるシーケンサ電源故障時のバックアップ運転回路の第１実施例を示す回路図である。It is a circuit diagram which shows 1st Example of the backup operation circuit at the time of the sequencer power supply failure in the overhead crane of this invention. 本発明の第２実施例を示す回路図である。It is a circuit diagram which shows 2nd Example of this invention. 本発明の第２実施例におけるシーケンサ電源故障時のバックアップ運転を示す回路説明図である。It is circuit explanatory drawing which shows the backup operation at the time of the sequencer power supply failure in 2nd Example of this invention. 従来の天井クレーンにおけるシーケンサ直流安定化電源回路図である。It is a sequencer DC stabilization power supply circuit diagram in the conventional overhead crane.

符号の説明Explanation of symbols

ＡＶＲ１ 通常用直流安定化電源
ＡＶＲ２ 非常用直流安定化電源
ＰＤ パワーダイオード
ＡＶＲＸ リレー
ＩＮＶ インバータ
ＳＥＱＲＵＮＸ リレー
ＤＡ／ＤＡ コンバータ AVR1 DC stabilized power supply for normal use AVR2 DC stabilized power supply for emergency use PD power diode AVRX relay INV inverter SEQRUNX relay DA / DA converter

Claims (4)

通常用直流安定化電源に、バックアップ用としての非常用直流安定化電源を並列に追加接続し、２つの直流安定化電源のプラス側別電源を２入力１出力のパワーダイオードに接続して構成したことを特徴とする天井クレーンにおけるシーケンサ電源故障時のバックアップ運転回路。   An emergency DC stabilized power supply for backup is additionally connected in parallel to a normal DC stabilized power supply, and the positive side separate power supplies of the two DC stabilized power supplies are connected to a 2-input 1-output power diode. A backup operation circuit at the time of sequencer power supply failure in an overhead crane. 非常用直流安定化電源の１次側に電源を供給し、２次側の出力を通常時遮断するように構成したことを特徴とする請求項１記載の天井クレーンにおけるシーケンサ電源故障時のバックアップ運転回路。   2. The backup operation at the time of sequencer power failure in an overhead crane according to claim 1, wherein power is supplied to the primary side of the emergency stabilized DC power supply and the output on the secondary side is cut off during normal operation. circuit. 通常用直流安定化電源に、バックアップ用電源として非常用バッテリーを追加し、通常時シーケンサ電源とバッテリーに対して電源を供給し、通常用直流安定化電源故障時に非常用バッテリーからシーケンサ電源に電源を供給するように構成したことを特徴とする天井クレーンにおけるシーケンサ電源故障時のバックアップ運転回路。   An emergency battery is added as a backup power supply to the normal DC stabilized power supply, and power is supplied to the normal sequencer power supply and battery. When the normal DC stabilized power supply fails, the emergency battery supplies power to the sequencer power supply. A backup operation circuit at the time of sequencer power supply failure in an overhead crane characterized by being configured to supply. バックアップ用電源として非常用ＤＣ１２Ｖバッテリーの２台を直列的に接続して構成したことを特徴とする請求項３記載の天井クレーンにおけるシーケンサ電源故障時のバックアップ運転回路。   4. A backup operation circuit when a sequencer power supply failure occurs in an overhead crane according to claim 3, wherein two emergency DC12V batteries are connected in series as a backup power supply.
JP2007131546A 2006-09-01 2007-05-17 Backup operation circuit in case of sequencer power supply failure in overhead crane Withdrawn JP2008081316A (en)

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JP2007131546A JP2008081316A (en) 2006-09-01 2007-05-17 Backup operation circuit in case of sequencer power supply failure in overhead crane

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103979420A (en) * 2014-04-29 2014-08-13 南通中远船务自动化有限公司 Power-off brake buffer device for large-scale gantry crane

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5641733A (en) * 1979-09-11 1981-04-18 Hitachi Ltd Duallstructure*d*c* power supply circuit
JPS6123098A (en) * 1984-07-12 1986-01-31 三菱電機株式会社 Emergency operating device for cargo-handling machine
JP2003134663A (en) * 2001-10-25 2003-05-09 Osada Res Inst Ltd Power unit
JP2004242379A (en) * 2003-02-03 2004-08-26 Nipron Co Ltd Backup battery pack for computer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5641733A (en) * 1979-09-11 1981-04-18 Hitachi Ltd Duallstructure*d*c* power supply circuit
JPS6123098A (en) * 1984-07-12 1986-01-31 三菱電機株式会社 Emergency operating device for cargo-handling machine
JP2003134663A (en) * 2001-10-25 2003-05-09 Osada Res Inst Ltd Power unit
JP2004242379A (en) * 2003-02-03 2004-08-26 Nipron Co Ltd Backup battery pack for computer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103979420A (en) * 2014-04-29 2014-08-13 南通中远船务自动化有限公司 Power-off brake buffer device for large-scale gantry crane

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