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Triconex	3625C1
Triconex	3625C1

Triconex 3625C1 数字输出模块 安全可靠性

>>>>>型号:Triconex3625C1 数字输出模块 安全可靠性 【功能描述】 在PLC控制系统中,电源占有极重要的地位。电网干扰串入PLC控制系统主要通过PLC系统的供电电源(如电源、I/O电源等)、变送器供电电源和与PLC系统具有直接电气连接的仪表供电电源等耦合进入的。现在,对于PLC系统供电的电源,一般都采用隔离性能较好电源,而对于变送器供电的电源和P

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>>>>>型号:Triconex 3625C1 数字输出模块  安全可靠性

 

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【功能描述】

 

 

在PLC控制系统中,电源占有极重要的地位。电网干扰串入PLC控制系统主要通过PLC系统的供电电源(如电源、I/O电源等)、变送器供电电源和与PLC系统具有直接电气连接的仪表供电电源等耦合进入的。现在,对于PLC系统供电的电源,一般都采用隔离性能较好电源,而对于变送器供电的电源和PLC系统有直接电气连接的仪表的供电电源,并没受到足够的重视,虽然采取了一定的隔离措施,但普遍还不够,主要是使用的隔离变压器分布参数大,抑制干扰能力差,经电源耦合而串入共模干扰、差模干扰。所以,对于变送器和共用信号仪表供电应选择分布电容小、抑制带大(如采用多次隔离和屏蔽及漏感技术)的配电器,以减少PLC系统的干扰。

  位保证电网馈点不中断,可采用在线式不间断供电电源(UPS)供电,提高供电的安全可靠性。并且UPS还具有较强的干扰隔离性能,是一种PLC控制系统的理想电源。

  为了减少动力电缆辐射电磁干扰,尤其是变频装置馈电电缆。笔者在某工程中,采用了铜带铠装屏蔽电力电缆,从而降低了动力线生产的电磁干扰,该工程投产后取得了满意的效果。

  不同类型的信号分别由不同电缆传输,信号电缆应按传输信号种类分层敖设,严禁用同一电缆的不同导线同时传送动力电源和信号,避免信号线与动力电缆靠近平行敖设,以减少电磁干扰。

>>>>>型号:Triconex 3625C1 数字输出模块  安全可靠性

 

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英文介绍

In the PLC control system, the power supply occupies a very important position. Power grid interference into the PLC control system mainly through the PLC system's power supply (such as power supply, I/O power supply, etc.), the transmitter power supply and the PLC system with a direct electrical connection of the instrument power supply into the coupling. Now, for the PLC system power supply, generally use good isolation performance power supply, and for the transmitter power supply and PLC system has a direct electrical connection of the instrument power supply, and has not received enough attention, although a certain isolation measures have been taken, but generally not enough, mainly the use of isolation transformer distribution parameters, inhibit interference ability is poor, Common mode interference and differential mode interference are introduced through power coupling. Therefore, for the transmitter and shared signal instrument power supply should choose a small distribution capacitance, large suppression band (such as the use of multiple isolation and shielding and leakage technology) distributor to reduce the interference of the PLC system.

To ensure that the power grid feed point is not interrupted, the online uninterruptible power supply (UPS) can be used to supply power to improve the safety and reliability of power supply. And UPS also has strong interference isolation performance, is an ideal power supply for PLC control system.

In order to reduce the power cable radiation electromagnetic interference, especially the frequency conversion device feed cable. In a project, the author used copper tape armouring shielded power cable to reduce the electromagnetic interference of power line production, and the project has achieved satisfactory results after being put into operation.

>>>>>型号:Triconex 3625C1 数字输出模块  安全可靠性

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