Description
若系统地与其他接地处理混乱,所产生的地环流就可能在地线上产生不等电位分布,影响DCS内逻辑电路和模拟电路的正常工作。DCS工作的逻辑电压干扰容限较低,逻辑地电位的分布干扰容易影响DCS的逻辑运算和数据存贮,造成数据混乱、程序跑飞或死机。模拟地电位的分布将导致测量精度下降,引起对信号测控的严重失真和误动作。
YASKAWA V7-4X CIMR-V7CU47P5 VARIABLE FREQ DRIVE 14 kva
Modicon Primary Adapter PCP MM-32PR-000 MM32PR000 NIB
GE PC Card ic3600 IC3600AIAD1B IC3600AIAD NO DOA’S
TOYODA Board Card Module PC3JB-I/O PC3JB 60201H0021 NEW
NEW GE PC IC3600 Board Card IC3600AIAD1C1D IC3600AIAD
NEW GOULD MA-J821-001 REMOTE I/O RECEIVER J821 NEW
ABB BAILEY CONTROLS 6639049d1 SLC01 main board
ABB DDCS Interface Board YPQ-112B YPQ-112 YPQ NEW
Reliance Snubber Resistor 2SR21200 D2-3291 230v NEW