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故障一：整机运动控制失灵。 分析检修：ＢＭＤ—Ｉ型模拟定位机运动执行机构分别由交流异步电机、反应式步进电机和交流伺服电机控制。其保护系统由相序检测电路、防碰联锁保护电路和紧急停止按钮组成。出现运动控制失灵，首先检查电源，见操作台电源正常，再查电器柜外接?
Fault one: The whole machine motion control fails. Analysis and maintenance: The BMD-I analog positioner’s motion executive mechanism is controlled by AC asynchronous motor, reactive stepper motor and AC servo motor respectively. Its protection system consists of phase sequence detection circuit, anti-collision interlock protection circuit and emergency stop button. There is a malfunction in the motion control. First check the power supply. See the console power supply is normal. Then check the external cabinet.