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来源：百度知道 编辑：UC知道 时间：2024/05/11 15:41:52
本设计是应用西门子S-200系列的PLC控制混合液体搅拌机，要求实现自动控制，数码显示，声光报警等功能。当发出启动信号时系统可以自动进液且时间必须小于2分钟，若2分钟时间到而搅拌机容器中液位未打到中液位的话则回发出红色声光报警。若达到中液位则自动加热，且具有恒温功能。恒温采用MCGS软件通过A/D转换数据采集，在显示屏上显示温度的变化曲线。还能根据检测液体的相对粘稠度做出相应的搅拌方式。分为：（1）粘稠类；（2）普通中粘稠类；（3）低粘稠类。完成全程搅拌后还可以进行脱液和排液，脱液时间为2分钟，液开始前12秒为电机的正常转速（并且与脱液前转向相同），12秒后为高速旋转脱液，脱液也排液同时进行，但正常排液时不能脱液且脱液时电机不能正反转。脱液具有限时功能，若2分钟限时到容器仍有积液位排尽则报警。只有出现排空信号时才能进行下一步工作。
Abstract
The design of the application Siemens S-200 Series PLC control of mixed liquid mixers, calls for automatic control, digital display, sound, light, alarm functions. When given the signal to start automatically into the system on time but must be less than two minutes, if two minutes of the containers and blenders level which did not reach the level returned to red-light alarm sound. If it were up to Secondary Level automatic heating and having thermostat function. Thermostats MCGS software used by A / D conversion of data collection, displayed on the monitor temperature curve. Under the liquid can detect the relative viscosity corresponding to the mode of agitation. Divided into : (a) paste; (2) of ordinary paste; (3) low viscosity category. The whole journey after mixing can be carried out from liquid and drain fluid from fluid time for two minutes on 12 seconds before the start of the normal motor speed (with the liquid before the shift from the same), 12 seconds afte