GE IC693CPU372-AE中央控制器模块
GE IC693CPU372-AE中央控制器模块中文资料：
GE IC693CPU372-AE中央控制器模块如果无法确保该公共接地方案，则在编程器和PLC串行连接之间使用端口隔离器（IC690ACC903）。如果编程器接地电位与PLC接地电位不同，则可能存在电击危险。此外，当编程器串行电缆连接在端口或转换器之间时，可能会损坏端口或转换器（如果使用）。警告：如果不遵循编程器接地建议，可能会导致人身伤害、设备损坏或两者兼而有之。模块屏蔽接地通常，铝PLC基板用于模块屏蔽接。在某些90-30系列模块上，模块上用户终端连接器的屏蔽连接通过模块的背板连接器路由至基板。GE IC693CPU372-AE其他模块，例如CPU 351、352、363、364和374需要单独的屏蔽接地。这些将在接下来的几节中讨论。带有外部端口连接的CPU的屏蔽接地信息带有外部端口的CPU，351、352、363、364和374必须具有单独的屏蔽接地线，以便为这些端口提供屏蔽。由于CPU351和352的接地连接设计与CPU363、364和374的不同，因此每种接地方法将在单独的章节中讨论。GE IC693CPU372-AE
英文资料
If it is not possible to ensure this common ground scheme, use a port isolator (IC690ACC903) between the programmer and PLC serial connection. If the programmer ground is at a different potential than the PLC ground, a shock hazard could exist. Also, damage to the ports or converter (if used) could occur when the programmer serial cable is connected between the two. Warning Failure to follow programmer grounding recommendations could result in personal injury, equipment damage, or both.Module Shield Grounding In general, the aluminum PLC baseplate is used for module shield grounding. On some Series 90-30 modules, shield connections to the user terminal connector on the module are routed to the baseplate through the module’s backplane connector. Other modules, such as CPUs 351, 352, 363, 364, and 374 require a separate shield ground. These are discussed in the next several sections. Shield Grounding Information for CPUs with External Port Connections CPUs with external port connections, the 351, 352, 363, 364, and 374 must have a separate shield ground connection to provide shielding for these ports. Because the design of the ground connection for the CPU351 and 352 is different from that of the CPU363, 364, and 374, each grounding method is discussed in a separate section.GE IC693CPU372-AE
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