ABB 87TP01-ER1210自动化控制模块
1.产 品 资 料 介 绍：
中文资料：
ABB 87TP01-ER1210通常，这种公共接地连接是通过将编程器的电源线连接到与背板相同的电源（具有相同的接地参考点）来提供的。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两个端口之间时，可能会损坏端口。
通常，ABB 87TP01-ER1210铝PLC背板用于模块屏蔽接地。在某些模块上，与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到背板。其他模块，如DSM314，需要单独的屏蔽接地，如本手册中的模块说明所示。ABB 87TP01-ER1210
对于安装在通用背板中的模块，可以使用尺寸为M3的螺钉将屏蔽接地连接到背板底部的接地棒。建议的扭矩最大为4英寸/磅。ABB 87TP01-ER1210
通用背板使用四个优质8-32 x 1/2（4 x 12mm）机器螺钉、锁紧垫圈和平垫圈安装通用背板。将螺钉安装到四个螺纹孔中。ABB 87TP01-ER1210
英文资料：
Normally, this common ground connection is provided by connecting the programmer’s power cord to the same power source (with the same ground reference point) as the backplane. If the programmer ground is at a different potential than the PLC ground, a shock hazard could exist. Also, damage to the ports could occur when the programmer serial cable is connected between the two.ABB 87TP01-ER1210
In general, the aluminum PLC backplane is used for module shield grounding. On some modules, shield connections to the user terminal connector on the module are routed to the backplane through the module’s backplane connector. Other modules, such as the DSM314 require a separate shield ground, as shown in the module descriptions in this manual.ABB 87TP01-ER1210
For modules installed in a Universal Backplane, shield grounds can be connected to the Grounding Bar at the bottom of the Backplane using size M3 screws. The recommended torque is 4 in/lb maximum.
Universal Backplanes Mount a Universal Backplane using four good-quality 8-32 x 1/2 (4 x 12mm) machine screws, lock washers and flat washers. Install the screws in the four tapped holes.
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