IC693CPU341
IC693CPU341
IC693CPU341
LC模拟量输出的有:
电压输出,一般是-10V到+10V电压输出。电流输出,一般是0-20mA、4-20mA电流输出。
PLC与输出设备连接时,不同组(不同公共端)的输出点,其对应输出设备(负载)的电压类型、等级可以不同,但同组(相同公共端)的输出点,其电压类型和等级应该相同。要根据输出设备电压的类型和等级来决定是否分组连接。如下图所示以FX2N为例说明PLC与输出设备的连接方法。图中接法是输出设备具有相同电源的情况,所以各组的公共端连在一起,否则要分组连接。图中只画出Y0-Y7输出点与输出设备的连接,其它输出点的连接方法相似。
与*负载元件连接1
PLC的输出端经常连接的是*输出设备(*负载),为了**电路断开时产生的电压使PLC内部输出元件造成损坏。因此当PLC与*输出设备连接时,如果是直流*负载,应在其两端并联续流二****管;如果是交流*负载,应在其两端并联阻容吸收电路。如下图所示。
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