PP835A显示屏,PP835A使用手册
•处理器或输入/输出适配器模块
•电源
•通信模块和/或输入/输出模块
安装说明电源设备支撑面板（左端面板）有螺钉，如中所示中央和右端面板由模压锁紧，无需螺钉。安装中央接地母线每个机柜必须包含一条中央接地母线。接地母线是常见的机柜内每个机箱和机柜本身的连接。如果你尚未安装中央接地总线
PP835A显示屏请参见工业自动化布线和接地指南，出版物1770-4.1。将设备接地导体连接至接地母线将设备接地导体直接从每个机箱连接到接地母线上的单个螺栓。•使用2.54 cm（1in）铜线编织或5.2 mm2（10 AWG）铜线连接每个机箱外壳和安装在后面板上的中央接地总线
•使用钢外壳防止电磁干扰（EMI）
•确保外壳门观察窗为层压屏幕或导电光学基板（阻止电磁干扰）
•在门和外壳之间安装连接线，以实现电气接触；不要依赖铰链将接地母线连接到接地极系统地极系统处于地电位，是中心任何设施内所有电气设备和交流电源的接地。使用接地电极导体，用于将接地母线连接到接地极系统。至少使用8.3 mm2（8 AWG）铜线防止电磁干扰的接地极导体。
•
use 2.54 cm (1in) copper braid or 5.2 mm2 (10 AWG) copper wire to connect each chassis, the
enclosure, and a central ground bus mounted on the back-panel
•
use a steel enclosure to guard against electromagnetic interference (EMI)
•
make sure the enclosure door viewing window is a laminated screen or a conductive optical substrate
(to block EMI)
•
install a bonding wire for electrical contact between the door and the enclosure; do not rely on the
hinge
Connect Ground Bus to Grounding-Electrode System
The grounding-electrode system is at earth-ground potential and is the central
ground for all electrical equipment and ac power within any facility. Use a
grounding-electrode conductor to connect the ground bus to the
grounding-electrode system. Use at minimum 8.3 mm2 (8 AWG) copper wire for
the grounding-electrode conductor to guard against EMI. The National Electrical
Code specifies safety requirements for the grounding-electrode conductor.
