安装，更换和修复照明灯具和电气控制及配电设备，如开关，继电器和断路器面板。
Install, replace and repair lighting fixtures and electrical control and distribution equipment, such as switches, relays and circuit breaker panels.
用PLC替代老设备的继电器控制箱，使产品更新换代。给出了替代的一些步骤和方法。
Control case with the relay of PLC replacing old equipment, make produce renew, have given some replacing step and method.
绞线机、合绳机电气控制设备中的时间继电器故障率较高，是影响这类设备正常运行的主要原因。
Higher fault rate of time relay in the electricity control apparatus of strander and closer is the main reason causing this kind of equipment to work off normal.
这些设备，俗称继电器，被称为正在使用的数以千计的控制许多连续型生产过程和立场沿机。
These devices, commonly known as relays, were being used by the thousands to control many sequential-type manufacturing processes and stand-along machines.
电路板往往被置于从电气上控制继电器开路和闭合的设备上。
The boards are often placed in a mainframe that electronically controls the opening and closing of the relays.
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.
目前，国内现有的试验压机、热压设备多为手动操作，或采用时间继电器、行程开关等作为控制元件实现一定程度的自动操作。
At present most of the existing domestic testing press, hot press are all manually operated, or use time relays, switches, etc. as control elements.
本产品采用氟利昂压缩机组，以F - 12作制冷剂，并装有压力继电器与温度调节器自动控制。是制造汽水、汽酒的配套设备。
The tank contains compressor using freon F-12 as refrigerant, and temperature regulator for automatic controlling. It is necessary equipment for aerated water and sparkling sine production industry.
操作表示机是计算机联锁系统中关键的人机界面设备，硬件上利用继电器组成的逻辑电路，实现双机热备的倒机逻辑控制和设备接口电缆的动态切换。
Therefore it is necessary to perfect the existing relay equipment based on the rule of fault-safety in order to achieve the function of railway signal computer-based interlocking control system.
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.
并且此系统同样适合多种继电器控制的设备的应用。
Meanwhile, this system also is suitable for the application o…
因此，用PLC对采用继电器控制的旧式机床进行设备改造具有很重要的现实意义，并为构成集散式控制系统打下基础。
So taking the place of the relays in old-type lathe with PLC is of momentous current significance and lays a foundation of DCS.
因此，用PLC对采用继电器控制的旧式机床进行设备改造具有很重要的现实意义，并为构成集散式控制系统打下基础。
So taking the place of the relays in old-type lathe with PLC is of momentous current significance and lays a foundation of DCS.
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