ABB GJR2263800R3现场控制单元处理器模块
一条非屏蔽以太网电缆，见上图中的4。屏蔽可通过外部0.1µF/250 V塑料电容器接地，见上图中的5。这将HF瞬态连接到地。36 3BSE069463-600 Rev D第7节实现更好EMC保护的其他安装提示实现更好的EMC保护•使用屏蔽电缆进行RS232通信。•RS422和RS485使用双绞线和屏蔽电缆。•使用适用于总线类型的电缆；以太网、Profibus、CC-Link、CAN、设备网络等。•根据相关总线标准的适用规范进行安装和连接。•以太网使用屏蔽电缆，最好使用箔和编织屏蔽。•D子盖应屏蔽，屏蔽应连接电缆3BSE069463-600 Rev D 37环境温度第7节附加安装提示1 a piece of unshielded Ethernet cable, see 4 in drawing above. The shield can be grounded via an external 0.1 µF/250 V plastic capacitor, see 5 in drawing above. This connects the HF transients to ground. 36 3BSE069463-600 Rev D Section 7 Additional Installation Tips To Achieve Better EMC Protection To Achieve Better EMC Protection • Use shielded cables for RS232 communication. • Use twisted pair and shielded cabling for RS422 and RS485. • Use the cabling intended for the bus type; Ethernet, Profibus, CC-Link, CAN, Device Net etc. • Install and connect according to applicable specifications for the relevant bus standard. • Use shielded cabling for Ethernet, preferably with foil and a braided shield. • D-sub covers should be shielded, and the shield should be connect cable 3BSE069463-600 Rev D 37 Ambient Temperature Section 7 Additional Installation Tips 1
