ABB-REF620E_F-NBFNAANNNCC1BNN1X ABB 测控装置

ABB-REF620E_F-NBFNAANNNCC1BNN1X馈线保护和测控装置，作为专用馈线保护装置，专门用于保护、控制、测量和监视公共和工业电网，包括辐射，环形和网状电网。REF620提供馈线过流和接地故障保护，该保护可应用于中性点不接地网络和电阻或阻抗中性点接地网络。此外，利用装置先进的站级间通信功能，REF620也可以用于环形网状配电网络或辐射网络保护。

ABB-REF620E_F-NBFNAANNNCC1BNN1X应用领域

目前，PLC控制器在已广泛应用于钢铁、石油、化工、电力、建材、机械制造、汽车、轻纺、交通运输、环保及文化等各个行业，使用情况大致可归纳为如下几类.开关量的逻辑控制

这是PLC控制器最基本、最广泛的应用领城，它取代传统的继电器电路，实现逻辑控制、顺序控制，既可用于单台设备的控制，也可用于多机群控及自动化线。如注塑机、印刷机、订书机械、组合机床、磨床、包装生产线、电镀线等。

ABB-REF620E_F-NBFNAANNNCC1BNN1X模拟量控制

在T业生产过程当中，有许多连续变化的量，如温度、压力、流量、液位和速度等都是模拟量。为了使可编程控制器处理模拟量，必须实现模拟量(Analgj和数字量(Digital)之间的A/D转换及D/A转换。PLC厂家都生产配套的A/D和D/A转换模块，使可编程控制器用于模拟量控制。

ABB-REF620E_F-NBFNAANNNCC1BNN1X运动控制

PLC控制器可以用于圆周运动或直线运动的控制。从控制机构配置来说，早期直接用于开关量/O模块连接位暨传感器和执行机构，现在一般使用专用的运动控制模块。如可驱动步进电机或伺服电机的单轴或多轴位置控制模块。世界上各主要PLC控制器生产厂家的产品几乎都有运动控制功能，广泛用于各种机械、机床、机器人、电梯等场合。过程控制

ABB-REF620E_F-NBFNAANNNCC1BNN1X过程控制是指对温度、压力、流星等模拟量的闭环控制。作为工业控制计算机，PLC控制器能编制各种各样的控制算法程序，完成邪杯控制。PID调节是一般闭环控制系统中用得较多的调节方法。大中型PLC都有PID模块，目前许多小型PLC控制器也具有此功能模块。PID处理一般是运行专用的PID子程序。过程控制在冶金、化工、热处理、锅炉控制等场合有非常广泛的应用。

ABB-REF620E_F-NBFNAANNNCC1BNN1X ABB 测控装置

ABB-REF620E_F-NBFNAANNNCC1BNN1X Feeder protection and measurement and control device is a dedicated feeder protection device specifically designed to protect, control, measure and monitor public and industrial power grids, including radiant, ring and mesh power grids. The REF620 provides feeder overcurrent and ground fault protection, which can be applied to neutral ungrounded networks and resistance or impedance neutral ground networks. In addition, the REF620 can also be used for ring mesh distribution networks or radiation network protection, using the device's advanced interstation communication capabilities.

ABB-REF620E_F-NBFNAANNNCC1BNN1X Application field

At present, PLC controller has been widely used in steel, petroleum, chemical, electric power, building materials, machinery manufacturing, automobile, textile, transportation, environmental protection and culture and other industries, the use of the situation can be roughly summarized as the following categories. Logic control of switching quantity

This is the most basic and most widely used PLC controller, which replaces the traditional relay circuit to achieve logic control and sequence control, which can be used for the control of a single device, and can also be used for multi-machine group control and automation line. Such as injection molding machines, printing presses, stapler machines, combined machine tools, grinding machines, packaging production lines, electroplating lines, etc.

ABB-REF620E_F-NBFNAANNNCC1BNN1X Analog control

In the production process of T industry, there are many continuously changing quantities, such as temperature, pressure, flow, liquid level and speed, which are analog quantities. In order for A programmable controller to handle analog, it is necessary to realize A/D conversion and D/A conversion between analog and Digital. PLC manufacturers have produced supporting A/D and D/A conversion modules, so that programmable controllers are used for analog control.

ABB-REF620E_F-NBFNAANNNCC1BNN1X Motion control

The PLC controller can be used to control circular motion or linear motion. In terms of the configuration of the control mechanism, in the early days, it was directly used for the connection of the switch /O module and the sensor and the actuator, and now the dedicated motion control module is generally used. For example, a single or multi-axis position control module that can drive a stepper motor or a servo motor. The products of the world's major PLC controller manufacturers almost all have motion control functions, which are widely used in various machinery, machine tools, robots, elevators and other occasions. Process control

ABB-REF620E_F-NBFNAANNNCC1BNN1X Process control refers to the closed-loop control of temperature, pressure, meteor and other analog variables. As an industrial control computer, PLC controller can compile a variety of control algorithm programs to complete the evil cup control. PID regulation is a common method used in closed-loop control system. Large and medium-sized PLC have PID module, many small PLC controllers also have this function module. PID processing is generally run a special PID subroutine. Process control is widely used in metallurgy, chemical industry, heat treatment, boiler control and so on.