honeywell 05701-A-0502全新到货PLC自动化备件

honeywell 05701-A-0502全新到货PLC自动化备件

honeywell 05701-A-0502全新到货PLC自动化备件

PL 控制系分统的抗干扰是一个系统工程，要求制造单位设计生产出具有较强抗干扰能力的产品，且有赖于使用部门在工程设计、安装施工和运行维护中予以全面考虑，并结合具体情况进行综合设计，才能保证系统的电磁兼容性和运行可靠性。进行具体工程的抗干扰设计时，应注意以下两个方面。

1)设备选型

在选择设备时，首先要选择有较高抗干扰能力的产品，其包括了电磁兼容性(MC)，尤其是抗外部干扰能力，如采用浮地技术﹑隔离性能好的PLC系统﹔其次还应了解生产厂给出的抗干扰指标，如共模拟制比﹑差模拟制比﹑耐压能力√允许在多火电场强度和多高频率的磁场虽度环境中工作。

2)综合抗干扰设计

主要考虑来自系统外部的几种抑制措施。主要内容包括:对PL系统及外引线进行屏蔽，以防空间辐射电磁干扰﹔对外引线进行隔离、滤波，特别是原理动力电缆，分层布置，以防通过外引线引入传导电磁干扰﹔正确设计接地点和接地装置。完善接地系统。另外，还必须利用软件手段，进一步提高系统油的安全可靠性。

honeywell 05701-A-0502全新到货PLC自动化备件

The anti-interference of PL control system is a system engineering, requiring the manufacturing unit to design and produce products with strong anti-interference ability, and depends on the use of the department in the engineering design, installation, construction and operation and maintenance to be fully considered, and combined with the specific situation of the comprehensive design, in order to ensure the electromagnetic compatibility and operational reliability of the system. The following two aspects should be paid attention to in the anti-interference design of specific projects.

1) Equipment selection

In the selection of equipment, we must first choose products with high anti-interference ability, including electromagnetic compatibility (MC), especially the ability to resist external interference, such as the use of floating technology, good isolation performance of PLC system; Secondly, we should also understand the anti-interference indicators given by the manufacturer, such as the common simulation ratio, the difference simulation ratio, the voltage resistance √ allow to work in a multi-thermal power field intensity and a high-frequency magnetic field environment.

2) Integrated anti-interference design

Several suppression measures from outside the system are mainly considered. The main contents include: shielding the PL system and the outer lead to prevent electromagnetic interference from space radiation; Isolation and filtering of external leads, especially the principle power cable, layered arrangement to prevent the introduction of conducted electromagnetic interference through the external lead; Correctly design the ground point and grounding device. Improve the grounding system. In addition, software means must be used to further improve the safety and reliability of system oil.