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-AE-EN AC Drive 5HP 460V *NIB*
Allen Bradley 1336F-BRF50-AE-EN AC Drive 5HP 460V USED
ALLEN BRADLEY 1336F-BRF75-AA-EN-GMS6-L4 USPP 1336FBRF75
Allen Bradley 1336F-BRF200-AA-EN-HCS2-L9E 20HP AC Drive
Allen Bradley 1336F-BRF200-AA-EN-HCS2 20HP AC Drive
ALLEN BRADLEY 1336F-BRF30-AA-EN-GMS5-L4 DRIVE 3HP *NNB*
ALLEN BRADLEY 1336F-BRF10-AA-EN4-HA1-L6 USPP 1336FBRF10
ALLEN BRADLEY 1336F-BRF07-AA-EN-HASP-LA2-L5 NSPP 1336FB