液体混合PLC控制系统设计

videoconference, Secretary of the provincial Committee of Xia Baolong stressed: this year is the five water treatment 357 timetables for three years to resolve outstanding issues, obviously worked, victory of the year. The Countys departments at all levels must firmly establish the guanghui is gold and silver green development concept, convinced that Castle is not relaxed, always maintaining strategic ability and strong determination to improve the environment, consistently playing well five water treatment of winning the war, ever-higher levels of comprehensive well-off society was built. (A) lay the sewage uphill battle. This year we will river water quality improved at the county level, up to five this basic objective grasp of pollution control that focus, with the focus on three things: a good job, clear rivers reaching the County created. Organization look back special inspection, the County garbage River, black and odorous River is Dragnet investigation, timely rectification of problems found in place firmly to prevent river pollution rebound. In accordance with the one-stop strategy, improving the inferior five water quality monitoring stations work this year to ensure the Elimination of 1 provincial control, five water quality section 3 municipalities controlled deterioration, ensure the creation this year of clear rivers standards. Second, pay special attention to pollution-cutting construction of nanotubes. Intercepting nanotubes are the basis of pollution of water source engineering, engineering, matter of success or failure of water management. Urban sewage treatment, to improve effluent from sewage treatment rate, running accuracy, compliance requirement, speed up the towns support network construction, is focusing on nanotubes home last meters question. Domestic sewage treatment in rural areas, this year is the final year of the three-year action, determination to fight and the momentum around, ending the battle on which fully to ensure the realization of all County 648 formed village coverage. Also, be sure to attach importance to focus on rural domestic wastewater treatment facility operation and management, ensure that wastewater treatment facility up and running, role play, avoid the Sun problem. Third, pay special attention to the River Lake pond desilting operation. Provinces now have focused on pollution control of water go to dig up mud, as the deepening water of this years plays. Next, to jump-start an investigation line touches work, implementation plan according to the priorities and the programme of work, in accordance with the one river one policy requires detailed cleaning, dredging plan, planning ahead of time cleaning out mud way out, according to local conditions to do sludge, promote scientific resource utilization of silt and mud. (B) the heavy regulation of heavily polluting industries. Pollution of water must grab the source, wastewater is primarily the source of backward production capacity, increase the intensity of学 号： 课 程 设 计题 目液体混合PLC控制系统设计学 院计算机科学与信息工程学院班 级2011级自动化3班学 号 学生姓名指导教师刘宵惠2014年5月29日为了促进本公司各项经营活动由事后管理向事前管理方式的转变，强化生产经营全过程控制，提高资金使用的计划性，特制定本管理办法，以增加公司资金运行的透明度，降低各项成本，使有限的资金发挥最大的效能。treatment of heavily polluting industries. According to municipal, and municipal government deployment of seven big heavy pollution industry regulation three years action plans, requirements to December 2016 end of Qian, all included shut stopped eliminated of enterprise all shut stopped eliminated in place; June 30, 2017 Qian, all included place regulation upgrade and agglomeration restructuring of enterprise by unified standard regulation in place, late not standard of enterprise are implementation discontinued; June 30, 2018 Qian, all intends Park production of enterprise relocation Park in place, late not Park of are discontinued. In the process of renovation, will focus on four aspects: to firmly close the high energy consumption and heavy pollution, hopeless enterprise governance and production lines, eliminated a number of yearly emission intensity, low value-added products of backward production capacity. Second, we must strictly enforce the space, total project Trinity environment access system, promoting industry access and environmental conditions of access of enterprises to the Park, industrial park, in principle, no longer the class on the new project. Thirdly, promoting replacement and reconstruction of heavily polluting industries, mergers and reorganizations, guide enterprises to energy conservation, recycling and low-carbon and clean production, and improve the level of green development. Four to establish a long-term supervision mechanism, increase the intensity of special inspections, investigate and punish the rectification is not in place, normal business of running anti-pollution installations do not. (Iii) linkage to promote flood control water, drainage, water supply, improving water saving. Speed up cross Yang support river dike reinforcement, and along Pu seawall except insurance reinforcement, and Lake Qian sluice, and BA Cao sluice, and cloud cover reservoir, focus flood control drainage engineering construction, vigorously implementation strong library solid di spread row engineering, increased geological disaster hidden points governance efforts, solid advance small basin torrent disaster governance, efforts from essentially solution basin sex, and regional flood control drainage capacity insufficient of problem. Vigorously implement the piers, algae and other water sources protection and, promoting rural drinking water safety projects, setting up water pricing reform and environmental protection mechanism, guiding water depth. Further soil pollution and repair, strengthen agricultural non-point source pollution prevention, mountain, water, forests, fields, lakes, various elements mutual long. Four, manage to tighten control, to play three to split battle. Xia Baolong, Secretary of provincial party Committee stressed that while the three to split operation time is over three years, but three to split must continue to catch on, and resolve a split cannot be changed. All localities and departments to the village and no unauthorised created液体混合PLC控制系统设计2011级自动化三班 摘要在上世纪60年代末PLC的出现，便以其独特的优点得到迅速地发展和普及，并在冶金、机械、纺织、轻工、化工等众多行业中取代了传统的继电器控制。掌握可编程序控制器的工作原理，具备设计、调试和维护可编程序控制器控制系统的能力，已经成为现代工业对电气技术人员和相关工科学生的基本要求。将PLC用于多种液体混合控制系统，对于学习和在工业上的应用，尤其是在化工工业上的应用显得非常的重要。设计以三种液体混合控制系统为例，根据设计要求对其硬件系统组成、软件系统设计和整个系统的整合调试等有关设计及制作过程做简单的介绍和说明，以阐述PLC在多种液体混合控制系统中应用。同时，设计采用欧姆龙公司的CPM1A系列机型进行了控制系统的PLC程序设计。关键词：多种液体，混合装置，自动控制一、设计目的 通过四种液体混合PLC控制系统设计，使学生进一步熟悉有关PLC电气控制的理论知识，PLC的结构、组成、工作原理，掌握根据控制要求用PLC进行控制系统设计及控制程序设计方法和步骤，培养同学们的工程意识的工程实践能力。二、方案设计 1.方案设计内容及要求 （1）按下启动按钮，电磁阀YV1和YV2同时为ON，液体A和液体B同时注入罐中。当液面高度达到H3时，液体检测传感器H3为ON，电磁阀YV1和YV2同时为OFF，液体A和液体B同时停止注入。 （2）磁阀YV3和YV4同时为ON，液体C和液体D同时注入罐中。当液面高度达到H4时，液体检测传感器H4为ON，电磁阀YV3和YV4同时为OFF，液体C和液体D同时停止注入。 （3）启动搅拌机M，搅拌液体5s后M停止，同时加热器RY通电、温控仪TE通电，N，开始加热液体并进行温度检测，经30s加热器RY和温控仪TE断电；或加热到60C时，温控仪输出控制信号使PLC自动切断加热器电源，发出超温报警信号。此时需由人工停止报警并转入下一工序。 （4）磁阀YV5打开，放出加热后的混合液体，H4先为OFF，再H3为OFF；经6s后罐中液体放空，电磁阀YV5为OFF，TE为OFF。 （5）当磁阀YV5为OFF时，电磁阀YV1和YV2同时为ON，液体A和液体B同时注入罐中，循环上述14的控制过程，用计数器记录循环2次后，停止循环控制。 （6）按下停止按钮，系统停止工作。 （7）应设计出硬件系统接线图。 2.总体设计方案本方案控制对象电动机由按钮完成启停控制。液体混合罐包含四个液位测定，具有四种种液体加液、搅拌、加热、排出、报警功能。液位检测传感器H3、H4，当被液体淹没时接通，四种液体的流入与混合后流出的液体分别由电磁阀YV1、YV2、YV3、YV4、YV5控制，M为搅拌电动机，RY为加热器，TE为温度传感器。液体混合罐控制系统示意图如下图所示液体A YV1 YV3 液体C液体BYV2 YV4液体DH3H4H1H2温度传感器TE加热器RYYV5 搅拌机M 放混合液体启动停止方案采用基本指令定时器指令和保持指令。系统以欧姆龙公司的CPMA系列小型机为对象，程序对应液体混合罐控制的启动、运行、加热、停止等多种状态操作，并设计了控制流程图、梯形图。3、 PLC型号选择 PLC的性能 CPM1A输入输出规格输入单元000009CH输入阻抗：IN0000000002为2K，其它为4.7 K输入电压：DC24V+10%、-15% ON电压：最小 DC14.4V OFF电压:最大 DC5.0V ON及OFF响应时间(IN0000000002作为高速计数器使用时除外):1128m以 下可选,缺省为8 m IN0000000002作为高速计数器使用时响应时间：200左右（可满足高计 数频率单相5KHZ、两相2.5KHZ）的要求 IN0000300006作为中断输入时响应时间为0.3 m以下(从输入ON开始到执行中断处理子程序为止的时间)输入单元是可以把外部输入设备的信号直接取到PLC内部的继电器，当CPU及输入单元装入时，方有输入继电器的动作。输入继电器可以作为程序中的接点或通道数据使用。在程序中继电器号的顺序及常开/常闭接点的使用次数是没有限制的，但要注意：请不要对输入继电器的号数使用输出命令。 输出单元010019CH断电器输出型：最大开关能力AC250V/2A DC24V/2A 公共端4A 最小开关能力DC5V、10mA 继电器寿命：电气寿命：阻性负载30万次 感性负载10万次 机械寿命：2000万次 ON响应时间：15mS以下 OFF响应时间：15 mS以下晶体管输出型：最大开关能力：24VDC+10% -15% 300 mA 最小开关能力：10 mA ON响应时间：0.1 mS以下 OFF响应时间：1 mS以下输出单元可以把PLC内部程序执行结果送到外部。输出点在程序中，可以作为继电器线圈接点及通道数据使用：在程序中输出继电器的号数使用顺序、常开/常闭接点的使用次数均没有限制。在编程过程中注意不要对同一个输出继电器重复使用两次输出命令。 因此CMP1A型号满足设计需求 四、电器元件说明QS：低压隔离器，主要用于电气线路中隔离电源，也可作为不频繁地接通和分断空载电路或小电流电路之用。QF：低压断路器，用于不频繁接通、分断线路正常工作电流，在电路中流过故障电流时（短路、过载）能自动将故障电路或用电设备从电网切除。低压断路器是用于交流电压1200V、直流电压1500V及以下电压范围的断路器，是低压配电系统中的主要配电电器元件。低压断路器主要用于保护交、直流低压电网内用电设备和线路，使之免受过电流、断路、欠电压等不正常情况的危害，同时也可用于不频繁起动的电动机操作或转换电路。FR：热继电器，是一种保护电器，专门用来对过载及电源断相进行保护，以防止电动机因故障导致过热而损坏。FU：低压熔断器，串联于电路中，当过载或短路（主要用于短路）电流通过熔体时，因其自身发热而熔断，从而分断电路。KM：外部辅助接触器，用于辅助PLC对外部设备的控制工作。增加辅助接触器，另考虑到实际生产中便于实现单台PLC同时控制多台混合装置。M：搅拌电动机。YV：电磁阀线圈。五、PLC I/O点分配及外部硬件接线图1. I/O点分配在绘制PLC外部接线图之前，我们需要对要用到的I/O点进行地址分配，以明确PLC芯片I/O接口以及有助于后面要进行的PLC程序设计。根据三种液体混合控制系统的控制要求，我们可以得出控制系统的PLC控制输入量：启动按钮SB2、停止按钮SB3、液面传感器H3、液面传感器H4、温度传感器TE；控制输出量：电动机M、电磁阀YV1、电磁阀YV2、电磁阀YV3、电磁阀YV4、电磁阀YV5。并对它们进行I/O点分配，如下表所示为控制系统I/O点分配表。控制系统I/O点分配表输 入输 出启动按钮SB20000电磁阀YV11000停止按钮SB30001电磁阀YV21001液面传感器H30002电磁阀YV31002液面传感器H40003电磁阀YV41003温度传感器TE0004 电磁阀YV51004转入下一步0005 搅拌机 1005 加热器RY1006报警器10072. PLC外部硬件接线图3. 主电路图六、控制流程图否TV1&TV2按下启动按钮开始液位达到H3 停止A与B液体注入 否TV3&TV4液位达到H4否 停止C与D液体注入打开搅拌机M 定时器工作5S关闭M，RY通电,TE通电RY断电发出报警30s后或30s内达60度60度人工停止报警RY与TE断电 打开YV5H4与H3先后断电定时器工作6SYV1与YV2通电TE与YV5断电计数器加1计数2次停止七、程序梯形图八、程序及操作说明 按下启动按钮SB2，电磁阀YV1和YV2同时为ON，液体A和液体B同时注入罐中。当液面高度达到H3时，液体检测传感器H3为ON，电磁阀YV1和YV2同时为OFF，液体A和液体B同时停止注入。 磁阀YV3和YV4同时为ON，液体C和液体D同时注入罐中。当液面高度达到H4时，液体检测传感器H4为ON，电磁阀YV3和YV4同时为OFF，液体C和液体D同时停止注入。 启动搅拌机M，搅拌液体5s后M停止，同时加热器RY通电、温控仪TE通电，开始加热液体并进行温度检测，经30s加热器RY和温控仪TE断电；或加热到60C时，温控仪输出控制信号使PLC自动切断加热器电源，发出超温报警信号。此时需由人工停止报警并转入下一工序。 磁阀YV5打开，放出加热后的混合液体，H4先为OFF，再H3为OFF；经10s后罐中液体放空，电磁阀YV5为OFF，TE为OFF。 当磁阀YV5为OFF时，电磁阀YV1和YV2同时为ON，液体A和液体B同时注入罐中，循环上述14的控制过程，用计数器记录循环2次后，停止循环控制。按下停止按钮SB3，系统停止工作。参考文献1 倪远平. 现代低压电器及其控制技术. 重庆大学出版社，2013.7 2 邹金慧，陈乐庚，韦寿祺. 可编程控制器及其系统. 重庆大学出版社，2012.11附录1 主要元器件清单序号元器件名型号数量1PLC欧姆龙CPM系列主机CPM1A12PC机13液位