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-BRF07-AA-EN-HASP-LA2-L5 NSPP 1336FB
ALLEN BRADLEY 1336F-BRF20-AA-EN-HAS1 USPP 1336FBRF20AAE
ALLEN BRADLEY 1336F-BRF50-AA-EN USPP 1336FBRF50AAEN
ALLEN BRADLEY 1336F-BRF75-AAEN-HCS1-L6 USPP 1336FBRF75A
Allen Bradley AB 1336F-BRF100 VS Drive MCC Bucket 30A
Allen Bradley Plus 2 1336F-BRF75-AE-EN-HAS2-L6 (1894)
ALLEN BRADLEY 1336F-BRF-100-AA-EN-HASP-L4E USPP 1336FBR
ALLEN BRADLEY 1336F-BRF100-AA-EN-HAS2-L5 USPP 1336FBRF1
New Allen Bradley AC Drive 1336F-BRF75-AN-EN-LA #28872