Description
负载接线时一端接在Y输出接口端子上,另一端则接至驱动电源;驱动电源一端与负载相连,另一端则与COM接口端子相连。由于PLC内部输出电路中无保护环节,所以驱动电源与COM接口端子间应设熔断器。对于交流感性负载,应并联浪涌吸收器,见Y003接口接线示例;而对于直流感应性负载,则须并联续流二极管,连接应注意正负极性,见Y005、Y007接口接线示例。
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