To prevent malfunction of a crane driving electromotor when a crank handle of a master controller is in the "0 notch" instructing the stop of a conveyance crane.SOLUTION: In a control system 10 for a crane driving electromotor, a master controller 1 has 0 notch position detection means 11 detecting that a crank handle 12 is in a 0 notch position. An operation circuit 3 includes contactor ON-state detection means 32 detecting that a direction switching contactor 22 or an acceleration contactor 21 is in an ON-state in a main circuit 2, a closing contact 33 when detecting the 0 notch position that is a contact operated to be closed when the 0 notch position detection means 11 detects that the crank handle 12 is in the 0 notch position, and contact closing detection means 34 that is connected to the closing contact 33 when detecting the 0 notch position to detect that a signal corresponding to any one of notches other than the 0 notch is input in the contactor.SELECTED DRAWING: Figure 1

    【課題】主幹制御器のクランクハンドルが、搬送用クレーンの停止を指示する「0ノッチ」に入っている場合におけるクレーン駆動用電動機の誤作動を防止すること。【解決手段】主幹制御器1は、クランクハンドル12が0ノッチ位置にあることを検出する0ノッチ位置検出手段11を有し、操作回路3は、主回路2において方向切替用接触器22又は加速用接触器21がON状態にあることを検出する接触器ON状態検出手段32と、0ノッチ位置検出手段11が、クランクハンドル12が0ノッチ位置にあることを検出したときに閉じるように動作する接点である0ノッチ位置検出時閉鎖接点33と、0ノッチ位置検出時閉鎖接点33に接続されていて、0ノッチ以外の何れかのノッチに対応する信号が前記接触器に入力されたことを検出する接点閉止検出手段34と、を有する、クレーン駆動用電動機の制御システム10とする。【選択図】図1


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    Title :

    CONTROL SYSTEM FOR CRANE DRIVING ELECTROMOTOR, CRANE DRIVING ELECTROMOTOR, AND CONVEYANCE CRANE


    Additional title:

    クレーン駆動用電動機の制御システム、クレーン駆動用電動機、及び、搬送用クレーン


    Contributors:

    Publication date :

    2024-05-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B66C Krane , CRANES



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