330703-000-060-10-02-00 BENTLY PLC系统

BENTLY 330780-50-00
BENTLY 330730-040-00-00
BENTLY 3500/32-A01-B01
BENTLY 3500/33
BENTLY 3500/15
BENTLY 3500/15
BENTLY 3500/22M
BENTLY 3500/50
BENTLY 3500/50
BENTLY 330850-90-05
BENTLY 330180-91-00
BENTLY 3500/25
BENTLY 3500/22M
BENTLY 135489-01
BENTLY 330780-50-00
BENTLY 330103-00-03-10-02-05

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Description

对PLC控制系统而言,它属高速低电平控制装置,应采用直接接地方式。由于信号电缆分布电容和输入装置滤波等的影响,装置之间的信号交换频率一般都低于1MHz,所以PLC控制系统接地线采用一点接地和串联一点接地方式。集中布置的PLC系统适于并联一点接地方式,各装置的柜体中心接地点以单独的接地线引向接地极。

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