利用固态继电器改造包装机加热系统  

Using Solid State Relay to Reform the Heating System of Packing Machine

作　　者：李荣芳 胡正权 

机构地区：[1]无锡交通高等职业技术学校电气控制教研室,江苏无锡214151 [2]纽迪希亚制药(无锡)有限公司技术服务部,江苏无锡214111

出　　处：《机械工程与自动化》2010年第4期184-185,187,共3页Mechanical Engineering & Automation

摘　　要：交流接触器是利用线圈得失电时电磁力的有无来吸合、释放衔铁,并联动其主触点相应动作,从而达到通、断主电路的目的,在一般的控制电路中应用十分广泛。但是对于触点通断过于频繁的电路,交流接触器常会出现机械动作不可靠、触点打火烧毁等故障。利用固态继电器无机械触点、闭合次数高达109的特性来取代交流接触器,并在实际应用中得到了验证。AC contactors are widely used in common controlling circuits.As the contact close and open too frequently,the contactor may have unreliable action,contact sparks and so on.Solid state relay has no mechanical contact and its on-off number can reach 109.This paper introduces the reform of the heating system of packing machine by replacing AC contactors with solid state relays,and practice shows the reform is successful.

关 键 词：交流接触器 固态继电器 包装机 加热系统 

分 类 号：TM572.2[电气工程—电器] TM58