描述
屏蔽地(AG,Analog Grounding)
也叫模拟地,它可以把现场信号传输时所受到的干扰屏蔽掉,以提高信号精度。DCS系统中信号电缆的屏蔽层应做屏蔽接地。线缆屏蔽层必须一端接地,防止形成闭合回路干扰。铠装电缆的金属铠不应作为屏蔽保护接地,必须是铜丝网或镀铝屏蔽层接地。接入公共接地极。
ALLEN BRADLEY 1336F-BRF50-AN-EN-L6E DRIVE
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ALLEN BRADLEY 1336 PLUS II DRIVE 1336F-AQF30-AA-EN *NEW
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ALLEN BRADLEY 1336F-BRF200-AN-EN-GMS1 PLUS II DRIVE
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