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LS产电PLC模块本质及用途
一、PLC是什么
PLC操控系统，Programmable Logic Controller，可编程逻辑操控器，专为工业生产规划的一种数字运算操作的电子装置，它采用一类可编程的存储器，用于其内部存储程序，执行逻 ...
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电机与电气控制技术小知识——LS产电
1、低压电器：是指在沟通额定电压1200V，直流额定电压1500V及以下的电路中起通断、维护、操控或调节作用的电器。
2、主令电器：自动操控系统中用于发送操控指令的电器。
3、熔断器： ...
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产电永磁式交流接触器结构
接触器主要由驱动体系、触点体系、灭弧体系及其它部分组成。
1 驱动体系：驱动体系包含电子模块、软铁、永磁体，是永磁式接触器的重要组成部分，依托它 ...
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LS产电变频器部件更换及其要求
变频器是由许多电子零件构成，例如半导体元件等，在运用和维护当中就涉及到替换某相关部件的问题，因为变频器组成或物理特性的原因，在必定的时期内会发生劣化，因而会下降变频器的特性，乃至会 ...
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Analysis of the fault problem of LS power terminal block
From the point of view of application, the function of the terminal block should be achieved: it is necessary to conduct the local conduction of the touch part, and the touch is reliable. The insulating part should not be conducted, and it is necessary to insulate it firmly. There are three common forms of fatal problems in terminal blocks:
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变频器的散热问题分析——LS产电
要想正确运用变频器就必须考虑一个问题，那就是VFD的运用寿命随着温度的升高呈指数下降。这是由于。环境温度上升10度，VFD运用寿命减半。所以要注意散热！VFD工作时，流过VFD的电流很大，VFD发 ...
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接触器品种类选择接触器的大小——LS产电
1.按接触器的控制对象、操作次数及运用类别挑选相应类别的接触器。
2.按运用位置处线路的额定电压挑选。
3. 按负载容量挑选接触器主触头的额定电流。
4. 关于招引线圈的电压等级 ...
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The reason for the overload trip of the inverter - LS generates electricity
1. The load is too heavy, the load carried by the motor is too heavy, or in other words, the resistance torque of the production machinery exceeds the additional torque of the motor.
2. Use improper overload, for example, increase the operating frequency of the inverter to the extra frequency of the motor, and the motor is in the extra frequency.
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LS power production contactors are used in this area
LS contactors are divided into AC contactors (voltage AC) and DC contactors (voltage DC), which are used in electricity, power distribution and consumption. Contactor in a broad sense refers to the electrical appliances that use the current flowing through the coil to generate a magnetic field and close the contact to control the load in industrial electricity.
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变频器的防雷端口——LS产电
依据应用的工程实践，变频器（Variable-frequency Drive，VFD）雷击大致可分为直击雷、感应雷和传导雷。但无论以何种形式到达设备，都可以从以下四个部分归纳为雷电浪涌，这里称为防雷端口，用V ...
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LS Group witnesses the reopening of the "Viet Nam Professional Football League".
The Viet Nam Professional Football League, sponsored by LS Group, began operations in June and is hosted by Viet Nam Professional Football Joint Stock Company. With the comeback of football events such as the Korea K League and the Bundesliga, more and more football events are also brewing to restart.
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Interference phenomenon of LS power inverter
1. As soon as the inverter of the heat exchange station is opened, the pressure transmitter jumps randomly;
2. In the water supply controlled by the inverter, the pressure transformer is used as a signal to collect the pressure, and the pressure transformer is disturbed by the inverter;
3. When the inverter starts the motor, the voltage converter signal is unstable and beats violently;
4. Pressure transformer (4-20 ...
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LS产电变频器性能的优劣势决定因素？
操控电路的好坏决定了LS变频器功能的好坏。
直流中心电路的作用是对整流电路的输出进行滑润，以保证逆变电路和操控电源可以得到质量较高的直流电源。当整 ...
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变频器过载和过流区别
（1）维护目标不同
过电流主要用于维护变频器，而过载主要用于维护电动机。因为变频器的容量有时需要比电动机的容量加大一档甚或两档，在这种情况下，电动机过载时，变频器不一定过电流。
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变频器转矩直接作为被控制量方式——LS产电
VVVF变频、矢量操控变频、直接转矩操控变频都是交—直—交变频中的一种。其共同缺点是输入功率因数低，谐波电流大，直流电路需求大的储能电容，再生能量又不能反应回电网，即不能进行四象限运行 ...
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夏天维护及保养变频器方法——LS产电
1、检查变频器的运转状态，运转时的电压，电流值是否在正常范围内。
2、仔细监视并记录变频室的环境温度，环境温度一般在-5℃——40℃之间。移相变压器的温升不能超过130℃。
3、防止 ...
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处理DP从站“闪断”故障方法——LS产电
因为网络连接器的接触不好，或者因为搅扰等问题，使用时刻较长的DP网络或许呈现 “闪断”的情况，即偶尔瞬间断开，很快又康复正常。假如没有下载OB86，闪断时CPU将会停机。现在遍及选用下载一个 ...
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电动机的维护和保养方法——LS产电
1、看：电动机的正常作业与周围环境有很大的联系。因而每天的巡查过程中，检查电动机周围的漏水﹑滴水状况（会引起电动机的绝缘低而形成击穿致使烧坏），检查电动机外围是否有影响其通风散热环 ...
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变频器专用直流电抗器及设计计算——LS产电
变频器专用直流电抗器也叫平波电抗器，串联在直流母线中(端子P1、P+)。主要是减小输入电流的高次谐波成分，进步输入电源的功率因数(进步到0.95)。此电抗器可与沟通电抗器同时运用，变频器功率大 ...
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The reason why the inverter cannot be equipped with a leakage protector
When using an inverter, a leakage maintainer must not be used. This is a major principle of the use of frequency converters.
Some users choose the corresponding leakage maintainer for the inverter when using the inverter. *The result is: the inverter moves together, the leakage maintainer acts, and the system foundation cannot be ...
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