3721 TRICONEX 质保一年 售后无忧

MVI56E-MCMR
1747-L553/C
PFEA111-65
AIP830
MVI56E-MNETC
ZR22G-100-S-K-C-T-T-C-A
1756-L63
ATS48C32Q
MVI56E-MNETC
SDCS-CON-4
SDCS-CON-4-COAT-ROHS
1326AB-B515G-21

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描述

信号与屏蔽接地:一般要求信号线必须要有惟一的参考地即“单点接地”,屏蔽电缆遇到有可能产生传导干扰的场合,也要在就地或者控制室唯一接地,防止形成“地环路”。信号源接地时,屏蔽层应在信号侧接地;不接地时,应在PLC侧接地;信号线中间有接头时,屏蔽层应牢固连接并进行绝缘处理,一定要避免多点接地;多个测点信号的屏蔽双绞线与多芯对绞总屏蔽电缆连接时,各屏蔽层应相互连接好,并经绝缘处理,选择适当的接地处单点接点。

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