330130-040-01-00 BENTLY 低电平控制装置

BENTLY 330106-05-30-10-02-00
BENTLY 3500/15
BENTLY 1900/65A-00-00-02-00-00
BENTLY 1900/65A
BENTLY 3500/15
BENTLY 3500/42M
BENTLY 9200-03-05-10-00
BENTLY 9200-01-05-10-00
BENTLY 176449-08
BENTLY 146031-01
BENTLY 1900/65A
BENTLY 135473-01
BENTLY 136180-01
BENTLY 149369-01

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

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