热风拉幅机的电气改造和可编程控制器的应用

介绍了纺织印染企业中最常用的热风拉幅机的旧设备改造方案。将主机的直流调速方法从过去的伺服电机控制调压器输出,改为由集成触发器为触发电路的可控硅整流调速。将过去的继电控制改为由可编程控制器控制,给出了较为详细的硬件连接图和软件流程图。通过改造,在最大限度保留原有电气的基础上使设备的控制水平得到了较大的提高。

This article introduces an electronically reforming methed of width-pulling air-heating e-quipment, which used usually in weaving and dyeing enterprises. Transform the velocity modulation methed ofmainframe from transtat control into the silicon-controlled rectifier whose flip-flop is integrated circuit. Bang-bang control is replaced by the programmable control. The control level is raised greatly based on retainingold electric installation by the regeneration.