1771-OM A-B

BENTLY NEVADA 125840-01
BENTLY NEVADA 133323-01
BENTLY NEVADA 3500/20
BENTLY NEVADA 3500/45
BENTLY NEVADA 3500/42-01-00
BENTLY NEVADA 3500/42-01-00
BENTLY NEVADA 3500/42-01-00
BENTLY NEVADA 330104-00-12 -10- 02-00
BENTLY NEVADA 133819-02
BENTLY NEVADA 133819-02
BENTLY NEVADA 133323-01

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Description

1771-OM A-B

是分布电容的存在,隔离是不可能的。

是通过变送器供电电源或共用信号仪表的供电电源串入的电网干扰,这往往被忽视;二是信号线受空间电磁辐射感应的干扰,即信号线上的外部感应干扰,这是很严重的。由信号引入干扰会引起I/O信号工作异常和测量精度大大降低,严重时将引起元器件损伤。对于隔离性能差的系统,还将导致信号间互相干扰,引起共地系统总线回流,造成逻辑数据变化、误动和死机。PLC控制系统因信号引入干扰造成I/O模件损坏数相当严重,由此引起系统故障的

 

GE FANUC IC697HSC700 NSFP IC697HSC700

GE FANUC IC697ALG230 NSFP IC697ALG230

GE Fanuc IC697CPU771 J 9070 CPU 12MHz 2k IO IC697MEM715

GE FANUC IC697PCM711 NSPP IC697PCM711

GE FANUC IC697CPU771 Processor Unit
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