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利用可控硅的开关特性以及二极管的箝位作用构成顺序控制器,是目前使用于铸造设备上程序步进控制(即顺序控制)中的控制方法之一。此类顺序控制器的最大特点是:步进器采用小功率可控硅,如3CTD-1A。利用可控硅的导通或关断作为移位信号。
It is one of the control methods currently used in the program step control (ie, sequence control) of the foundry equipment that the sequence controller is formed by the switching characteristics of the thyristor and the clamping action of the diode. The most prominent feature of this sequence of controllers is that the stepper uses a low-power thyristor such as the 3CTD-1A. Use thyristor on or off as a shift signal.