CONTROL DEVICE, MACHINE TOOL, CONTROL METHOD, AND PROGRAM

• Main Author: HARA YOSHIHIRO
• Format: Patent
• Language: English; Japanese
• Published: 09.07.2020
• Subjects: COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOTDIRECTED TO A PARTICULAR RESULT; CONTROL OR REGULATING SYSTEMS IN GENERAL; CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g.ARRANGEMENTS FOR COPYING OR CONTROLLING; ELECTRICITY; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; GENERATION; MACHINE TOOLS; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OFPARTICULAR DETAILS OR COMPONENTS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS; PERFORMING OPERATIONS; PHYSICS; REGULATING; TRANSPORTING

To provide a control device, a machine tool, a control method, and a program by which disconnection can be easily detected.SOLUTION: A control device for controlling a three-phase AC motor includes an acquisition unit that acquires voltage of each phase to be inputted to the three-phase AC motor, a voltage determination unit that determines whether or not the absolute value of the voltage of each phase acquired by the acquisition unit is greater than a threshold, and an abnormality determination unit that, in a case where the voltage determination unit determines that the absolute values of two of the phases are each greater than the threshold, determines that an abnormality has occurred.SELECTED DRAWING: Figure 2 【課題】容易に断線の検出を行うことができる制御装置、工作機械、制御方法及びプログラムを提供する。【解決手段】三相交流モータを制御する制御装置において、前記三相交流モータに入力する各相の電圧を取得する取得部と、該取得部が取得した各相における電圧の絶対値が閾値よりも大きいか否かを判定する電圧判定部と、該電圧判定部がいずれか二相の前記絶対値が前記閾値よりも大きいと判定したことに基づいて、異常があると判断する異常判断部とを備えることを特徴とする制御装置。【選択図】図２