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一、系统框图和主电路1.拖动系统框图(见图1)(1)变频器的控制模式:由于电梯的运行要求十分准确,故采用有反馈矢量控制方式。(2)控制箱的功能:它将接受各种控制信号,并向变频器发出运行指令。(3)反馈信号:①速度信号。它将随时和控制箱的
First, the system block diagram and the main circuit 1. Drag the system block diagram (see Figure 1) (1) inverter control mode: As the elevator’s operating requirements are very accurate, so the use of feedback vector control. (2) The function of the control box: It will accept various control signals and issue operation instructions to the inverter. (3) Feedback signal: ① speed signal. It will be at any time and control box