加工定制:是 | 品牌:GE/通用电气 | 型号:IC693MDL633RR |
工作电压:24V | 输出频率:50kHz | 产品认证:IC693MDL633RR |
IC693MDL633RR
IC693MDL633RR
IC693MDL633RR
PLC的接地
1、PLC的接地采用专用的接地极。如不可能,也可与其他盘板共用接地系统,但须用自己的接地线直接与公共接地极相连。不允许与大功率装置共用接地系统;
2、PLC的接地极离PLC越近越好,即接地线越短越好。PLC如由多单元组成,各单元之间应采用同一点接地,以***各单元间等电位。当然,一台PLC的I/O单元如果有的分散在较远的现场(超过100m),是可以分开接地的
3、PLC的输入输出信号采用屏蔽电缆时,其屏蔽层应用一点接地,并用靠近PLC这一端的电缆接地,电缆的另一端不接地。如果信号随嗓声波动,可以连接一个0.1--0.47微法/25V的电容器到接地端;
4、接地线截面积应大于2平方。接地线一般最长不超过20m,PLC接地系统的接地电阻一般应小于4欧姆。
【公 司】: 厦门泰尼电气有限公司
【主 营】: AB、GE、施耐德等各类PLC产品
【价 格】: 电议
【发布人】: 张亮
【电 话】: 18030028083
【所在地】: 福建 - 厦门
【坐 机】: 0592-6809819
【来 源】: 供应信息 > 电工、电气 > PLC
【Q Q】: 2314094943
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