它正逐步取代传统的继电器控制系统。
It is gradually replacing the traditional relay control system.
介绍了一种用PLC改造继电器控制系统的方法。
The method of transforming the relay control system with PLC was introduced.
介绍了PLC在继电器控制系统改造中的应用，给出了I/O分配图及部分程序。
This paper introduces the application of PLC in reconstructing the relay control system and gives I/O distribution diagram and some of programs.
PLC控制系统由于其简单易于实现，可靠性好，是代替继电器控制系统有效的方法。
With easier realized and reliability, the PLC control system is a available method to instead of the relay control system.
运用PLC控制系统取代焦炉移动机械传统的继电器控制系统具有国际90年代先进水平。
PLC control system replacing traditional relay control system of battery moving machines has reached an advanced level of 1990s in the world.
为了满足液压泵站复杂灵活的控制要求，采用PLC改造了液压泵站原来的继电器控制系统。
In order to meet the requirement of the complicated and flexible control of hydraulic power unit, its electrical control system is rebuilt by PLC.
从各个单元的结构、气动系统、继电器控制系统和PLC控制系统以及其特点作了详细的分析。
From its characteristics as well as the structural, pneumatic systematic, relay control systematic and PLC control system of every unit, have made detailed analysis.
改变了继电器控制系统中机械式的鼓形控制器或凸轮控制器步数和输出点数有限、体积大、重量大、成本高的缺点。
It changes the disadvantage that drum or CAM controller in relay control total steps, output points are limited, large volume and weight, high costing.
对采用继电器控制系统进行控制的某实验室船舶燃油辅助锅炉，采用计数法进行可靠性评估，得出控制电路的平均无故障时间。
The reliability lab ship fuel oil donkey boiler controlled by relay control system is evaluated using counting method, and mean time to failure (MTTF) of the control circuit is educed.
PLC在机床控制方面与传统的继电器控制系统相比，具有可靠性高、体积小、功耗低、维护简单、开发周期短、价格低等特点。
Compared with relay in controlling lathes, PLC has some advantages such as high reliability, low consumption, small volume, easy maintenance, short developing circle, low price and so on.
本文介绍接近开关传感器与PLC的控制相连接而组成的自动控制系统，它取代操作繁琐的电器继电器控制系统，实现造纸圆筒换卷过程的自动控制。
This paper introduces the autocontrolling system composed with proximity sensor and PLC, this system is instead of relay controlling complicated system to realize cylinder changing automatically.
阐述了中间继电器的选型是切实提高控制系统运行可靠性的关键问题。
The selection of an auxiliary relay is a key question of reliability to improve control system operation.
在自动化控制系统中采用大量的中间继电器，其工作的可靠性对控制系统工作的可靠性是至关重要的。
Intermediate relay is a type of control undervoltage relay which is used to add the amount of control signal or amplify the signal.
调节器，继电器，喇叭，电磁开关，闪光器，传感器，电涡流缓速控制系统。
Regulators, Relays, Horns, Switch, Flashers, Sensors, Eddy current retarder control system.
电耗大，一旦控制系统发生断电等故障，继电器的状态无法维持，电器的开关状态就会自动改变。
Because the electricity wastage is heavy, once the controlling system take places malfunctions as electricity cut, the state of the relay can't last, then the switch state will be self-changed.
我们的许多功能继电器额定马力，这使他们在暖通空调控制系统电动控制阻尼器使用。
Many of our relays feature horsepower ratings, that make them suitable for controlling motorized dampers in HVAC control systems.
在该控制系统中，操作人员通过PLC发出指令，驱动时间继电器。
In the control system, operating through the PLC issued a directive, the drive time relay.
继电器的选型是切实提高控制系统运行可靠性的关键问题。
The reliability of intermediate relay is a crucial precondition for increasing the control system reliability.
外围输出控制系统由发光二极管、继电器、数字开关等模拟外围设备，控制其它的弱电设备和一般的强电设备。
The periphery output control system is composed of analog peripheral device such as LED, relay, digital switch etc, to control the other weak-current devices and general heavy-current devices.
分析了利用继电器实现锅炉定期排污控制系统存在的问题，阐述了采用PC机改进后的该系统控制过程及特点。
Analyses problems of boiler regularity blow down control system which is controlled by relay, describes control process and characteristic of the system using PC.
设计和实现了一种采用工控机与温度模块、PWM输出卡、固态继电器及相关控制电路搭建的计算机电阻炉温度控制系统。
Temperature computer control system of a resistance furnace is designed with industry person computer (IPC), temperature input module, PWM output card, solid state relay(SSR) and interrelated circuit.
铜铝管焊接的关键是对焊接参数的控制，原控制系统采用时间继电器控制焊接参数。
The key of Cu-Al pipe butt welding is to control the welding parameters. In the original control system, all welding parameters were controlled by time-relays.
该方案简单实用，且对其它机床继电器接触器控制系统的改造具有一定的参考价值。
This system is simple, practical and has also reference value to the reformation of relay control system of other machine.
介绍Z8640双工位四开模热芯盒射芯机常规继电器线路控制系统整改为可编程序控制器（PLC）控制系统的目的、应用和技巧。
Purpose, application and skill in control system transformed from conventional banked relay to PLC control system on Model Z8640 hot box core shooter have been introduced.
我国矿井提升绞车大多是采用交流异步电机拖动，其电气控制系统采用转子串、切电阻调速，由继电器-接触器构成逻辑控制装置。
China's mines are hoist AC Induction Motor Drive, and its electrical control system uses a rotor series, cutting speed resistance , by the relay - contactor control devices constitute a logical.
介绍引进设备使用继电器所存在的问题，论述控制系统各部分功能，举例说明P LC的选用。
The questions of relay existing in imported equipment are introduced. The functions of different part of control system are expounded, and take the selection of PLC for example to state.
设计一种基于光电池的核废料沉淀罐沉淀界面位置检测装置，采用分布式组态plc系统作为控制终端，继电器控制回路作为冗余控制系统。
A distributive configuration PLC system was used as control terminal of the detection device, while a relay loop as a redundancy control system.
目前，我国的缩水机电气控制系统普遍采用的是传统的继电器—接触器控制方式。
Currently, the country's shrinking machine electrical control system is widely adopted in the traditional relay - access control methods.
目前，我国的缩水机电气控制系统普遍采用的是传统的继电器—接触器控制方式。
Currently, the country's shrinking machine electrical control system is widely adopted in the traditional relay - access control methods.
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