BENTLY 135489-03模块卡件
BENTLY 135489-03模块卡件中文资料：
BENTLY 135489-03模块卡件屏蔽的正确接地也很重要。为了最大限度地抑制电气噪声，电缆屏蔽只能在电缆的一端接地。对于输入模块，将噪声最大的一端接地（通常位于现场设备端）。对于输出模块，在模块端接地。有关更多屏蔽接地信息，请参阅GFK-0898，Series 90-30 PLC I/O Module Specification。模拟输入模块接线方法纠正电气噪声问题有时是一种反复尝试的例行程序。BENTLY 135489-03然而，一般来说，最好将电缆屏蔽层接地，使其尽可能靠近噪声源，通常在设备端。在排除噪声问题时，有时试验屏蔽接地点位置是有益的。记住，电缆屏蔽只能在一端接地。此外，最好尽量缩短剥线电缆引线的长度，以尽量减少暴露在噪声环境中的非屏蔽导体的长度。有关更多详细信息，请参阅GFK-0898系列90-30 PLC I/O模块规格手册。BENTLY 135489-03
英文资料
Proper grounding of the shield is also important. For maximum electrical noise suppression, the cable shield should only be grounded at one end of the cable. For Input modules, ground the end that is in the noisiest environment (which often is at the field device end). For Output modules, ground at the module end. See GFK-0898, Series 90-30 PLC I/O Module Specifications, for more shield grounding information. Analog Input Module Wiring Methods Correcting electrical noise problems can sometimes be a trial-and-error routine. However, in general, it is generally best to ground the cable shield as close to the source of the noise as possible, which is usually at the device end. In troubleshooting noise problems, sometimes it is beneficial to experiment with the shield grounding point location. Remember, the cable shield should be grounded at one end only. Also, it is best to keep the length of stripped cable leads as short as possible to minimize the length of unshielded conductors that will be exposed to the noisy environment. See the Series 90-30 PLC I/O Module Specifications Manual, GFK-0898 for additional details.BENTLY 135489-03
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