冷水机组电脑操作说明书(中英文)_正文.docVIP

General 概述 This unit is fitted with the SIEMENS PLC controller together with other matching electric appliances like imported contactor、thermal relay、air switch and air switch，ensuring safe running of unit. In order to realize dependable operation of unit ,PLC is fitted with reliable program controlled system having application function up to current advanced level among the same trade. This unit is characterized by self-operation ,safety and dependability. 本机组电气控制系统采用德国SIEMENS公司提供的PLC控制器，其他电器配套有进口接触器、热继电器、空气开关和三相电源监测器，可确保机组安全运行。为了使机组可靠运行，电脑配置了完善的程序系统，应用功能达到目前同行业先进水平。本电脑通讯端口采用RS-485信号标准的9针D型连接器，并符合EN50170所定义的PROFIBUS工业现场总线标准，实现计算机联网监控。本机组有节能，自动运行，安全可靠等特点。 This operation instruction is applicable for the operation of Jirong water chillers of LRSFZ type. 本操作指南适用于LRSFZ型风冷冷（热）水机组的操作运行。 Preparation before start-up 开机前准备 Make the following checks carefully before start-up: 机组启动之前必须认真检查以下几项内容： Examine the electrical system (de-energized): 电气系统的检查（断电检查）： The internal parts of de-energized electrical system can be checked. the checked items cover the tightness of bolts for wires、contactor etc, screwing-up of wiring for comp and reliable connection of plugged –in components and PLC module,(confirm if they come loose during transportation) to make sure contact well. 在确定机组断电情况下，可对电控系统内部进行检查。主要检查导线、接触器等元件的螺丝接头是否紧固，星三角启动的接线方法是否正确（请参见随机图纸），压缩机接线是否牢固，各接插件及PLC模块连接是否牢固（是否有运输过程的松动）以确保接触良好。 Examine the unit 机组的检查 See if all the valves and safety locks are open, confirm if the controller with manual reset is at the reset state. 所有安全锁和阀门是否打开，带手动复位的控制器是否已经复位。 Energize the system for examination: 通电检查： Make the circuit breaker inside the unit to be at OFF state, and then energize the system with AC380V±5% power supply having voltage difference rate between phases ≤3%, at this time , if the system is normal, the indicator for computer should response to this. Start the contactor of supply fan or condensing fan , then initiate the main power supply of supply fan and condensing fan check whe