摘要
各厂家开发出品种繁多的PLC特殊功能单元,增强了PLC的功能,扩大了应用范围,促进了PLC的智能化、网络化、专业化。FX2n-4AD-PT为高精度温度模拟量输入模块,对摄氏度和华氏度都可以读取。它连接铂电阻温度传感器PT100,将温度信号模拟量输入A/D通道,以数字量存储在缓冲存储器中。采用FX2n-48MR基本PLC单元与FX2n-4AD-PT温度输入单元,实现了基于PLC的制冷中央空调温度控制。
various manufacturers developed a variety of PLC special function units, enhanced the function of PLC, expanded the application scope, and promoted the intellectualization, networking and specialization of PLC. FX2n-4AD-PT is a high precision temperature analog input module, which can be read for centigrade and Fahrenheit. It connects the platinum resistance temperature sensor PT100, and inputs the temperature signal analog input into the A/D channel, which is stored in the buffer memory digitally. In this paper, the FX2n-48MR basic PLC unit and the FX2n-4 AD-PT temperature input unit are used to realize the temperature control of the central air-conditioning system based on PLC.
作者
杨正祥
徐桂敏
Yang Zhengxiang;Xu Guimin(College of mechanical and electrical engineering,Wuhan Technical College of Communication,Wuhan 430065;engineering and Technology Institute,Hubei University ofTechnology,Wuhan 430068)
出处
《现代制造技术与装备》
2018年第4期159-160,共2页
Modern Manufacturing Technology and Equipment
基金
湖北教育科学规划重点项目(2017GA081)
湖北工业大学工程技术学院院级教研项目(X2007005)
关键词
中央空调
温度控制
模拟量
空气压缩机
central air conditioning
temperature control
analog quantity
air compressor
