顺序控制电路

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,顺序控制电路,顺序控制电路,QF,FU1,L1,L2,L3,KM1,KM2,M1,M2,KM1,KM2,FU2,FU2,FR1,SB1,SB2,SB3,KM1,KM2,FR1,FR2,FR2,KM1,TC,请说出图中电气符号的名称,QF,FU1,L1,L2,L3,KM1,KM2,M1,M2,KM1,KM2,FU2,FU2,FR1,SB1,SB2,SB3,KM1,KM2,FR1,FR2,FR2,KM1,TC,请说出图中电气符号的名称,QF,FU1,L1,L2,L3,KM1,KM2,M1,M2,KM1,KM2,FU2,FU2,FR1,SB1,SB2,SB3,KM1,KM2,FR1,FR2,FR2,KM1,TC,QF,：断路器,FU,：熔断器,KM,：交流接触器,FR,：热继电器,TC,：变压器,SB,：按钮,顺序控制电路,QF,FU1,L1,L2,L3,KM1,KM2,M1,M2,KM1,KM2,FU2,FU2,FR1,SB1,SB2,SB3,KM1,KM2,FR1,FR2,FR2,KM1,TC,首先闭合,QF,接入电源,M1,电机启动过程,QF,FU1,L1,L2,L3,KM1,KM2,M1,M2,KM1,KM2,FU2,FU2,FR1,SB1,SB2,SB3,KM1,KM2,FR1,FR2,FR2,KM1,TC,QF,闭合，三相电源进入机床,按下,SB2,，使得,KM1,得电自锁，,KM1,主触点闭合，,M1,转动，同时,KM1,常开触点闭合,M2,电机启动过程,QF,FU1,L1,L2,L3,KM1,KM2,M1,M2,KM1,KM2,FU2,FU2,FR1,SB1,SB2,SB3,KM1,KM2,FR1,FR2,FR2,KM1,TC,QF,闭合，三相电源进入机床,按下,SB2,，使得,KM1,得电自锁，,KM1,主触点闭合，,M1,转动，同时,KM1,常开触点闭合,按下,SB3,，使得,KM2,得电并自锁，,KM2,主触点闭合，,M2,电机转动,M2,电机启动过程,QF,FU1,L1,L2,L3,KM1,KM2,M1,M2,KM1,KM2,FU2,FU2,FR1,SB1,SB2,SB3,KM1,KM2,FR1,FR2,FR2,KM1,TC,思考问题,QF,FU1,L1,L2,L3,KM1,KM2,M1,M2,KM1,KM2,FU2,FU2,FR1,SB1,SB2,SB3,KM1,KM2,FR1,FR2,FR2,KM1,TC,此处,KM1,常开辅助触点的作用是什么？,此处,KM1,常开辅助触点的作用是什么？,此处,KM1,主触点的作用是什么？,此处,KM1,线圈的作用是什么？,思考题,QF,FU1,L1,L2,L3,KM1,KM2,M1,M2,KM1,KM2,FU2,FU2,FR1,SB1,SB2,SB3,KM1,KM2,FR1,FR2,FR2,KM1,TC,图中,FR,和,FU,在电路中的作用是什么，其工作原理是怎么样的？,热继电器的工作过程,M1,和,M2,正常工作时电流的情况如红色线所示,M1,电机过载，图中的,FR1,热元件,会发热，从而会推动热继电器中的导板，使得,FR1,的常闭触点断开,FR1,常闭触点断开，,KM1,线圈失电,KM1,主触点断开,M1,电机停止,熔断器的工作过程,当控制电路中电流过大时，此处的,FU2,就会熔断,KM1,线圈失电,KM1,主触点断开,M1,电机停止,思考题,M1,和,M2,正常工作时，当,M1,电机发生过载时，从刚才的分析中，我们可以知道,M1,会停止，请问此时,M2,是否还在转动？为什么？,思考题,M1,和,M2,正常工作时，当主电路中电流过大时，哪个元器件会进行保护？,