MVME2305-900逻辑模拟量顺序模块

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型号：MVME2305-900
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MVME2305-900逻辑模拟量顺序模块

PROFIBUS是全球应用广泛的过程现场总线系统。 PROFIBUS有三种类型:FMS、DP和PA。PROFIBUS-FMS可用于通用自动化;PROFIBUS-DP用于制造业自动化;PROFIBUS-PA用于过程自动化。使用PROFIBUS过程现场总线技术可以使硬件、工程设计、安装调试和维修费用节省40%以上。PROFIBUS-DP的技术性能使它可以应用于工业自动化的一切领域，包括冶金、化工、环保、轻工、制药等领域。除了安装简单外，它有极高的传输速率，可达12Mbits/s，通讯距离可达到1000米，如果加入中继器可以将通讯距离延长到数十公里，具有多种网络拓扑结构(总线型、星型、环型)可供选择。在一个网段上多可连接Profibus-DP从站即ET200S或是ET200eco 32个。我国是世界上大的纺织国家、拥有10万多家纺织、服装企业。变频器在纺织机械领域中有着巨大的应用空间。纺织机械种类繁多，有纺纱机械、织造机械、针织机械、化纤机械、染整机械等等，一般小功率、低频变频器普遍应用在开清棉机，梳棉机，条卷机，精梳机，并条机以用粗纱机，细纱机和洛简机等，对于织造机械则有浆纱机，整经机等。而变频器在各类机械中的作用且不尽相同，而具有高效、节能、环保的纺织机械是我国从纺织大国迈向纺织强国所必须拥有的技术。现以A186E型梳理机为例，主要工序是开清棉联合机,后道工序是并条机,主要用于加工棉纤维和化学纤维。将前道工序送来的棉（化纤）卷或由棉箱供给的棉（化纤）层进行开松分梳除杂。使所有呈卷曲、块状的棉团成为基本伸直的单纤维状态，并在此过程中，除掉清花工序遗留下来的破籽、杂质和短绒，然后集束成一定规格的棉条，储存于条筒内，供并条工序使用。因为是老机器，在技术方面存在一定的缺陷，电磁离合器由于故障较高，不时出火警，给生产效率和产品质量造成一定的损失，现为了使道夫升、降速平滑，在机械传动中设计双速
电机
，采用交流变速调速，从而实现道夫升速斜率的任意调节，道夫工艺转速的任意可变功能。这项技术的内容包含了先进的信息处理和控制技术，即以计算机为核心，有
PLC
、工控机、单片机、
人机界面
、现场总线等组成的控制系统；先进的驱动技术，有变频调速、交流伺服、步进电机等。 1、改造方案　　根据梳理机运行实践及当前控制领域的水平与发展，确定A186E型梳理机改造的指导思想是：机电分离，集中控制，实时监控。其目的在于将电气控制系统与机械系统结构上相分离，以利于机电系统的维护和修理，将分离式硬件逻辑控制系统改为模块化集中控制，以提高梳理机控制水平，增强系统的可靠性；运用智能化技术对梳理机运行进行实时监控，给操作工以指导。A186E电气改造的关键是去掉锡林电机、道夫电机的原有继电器控制系统，采用PLC控制变频器方案。新型控制系统以松下FP0 PLC为控制核心，以两台JBA系列变频器为主要控制单元，控制梳棉机锡林和道夫的运转。使用了PLC和JBA系列变频器的A186E型梳理机控制系统，实现机电一体化，完成相对复杂的控制。并可节约能耗、实现无级调速、延长机器使用寿命、改善生产工艺，提高产品质量，降低生产成本。　　 2、变频器控制系统　　变频系统采用JBA系列交流变频器，电机运行时主要有三种速度，分别为：手动速度，低速及标准速度。手动速度用于试车，低速是启动过渡时的电机运行速度，标准速度是电机正常运行速度，通过改变相应参数值，就可以改变电机的运行速度。　　改造前后生产指标　　改造后梳棉机工作稳定可靠，而且能按梳棉机的工艺要求方便地控制梳棉机。可以根据所纺纤维种类和对产品质量要求确定梳棉机的电气参数，包括锡林和道夫的启动时间以及它们的转速等。通过纺不同纤维的试验并综合测试发现，梳棉机的平均产量可达21kg/h，提高了近35%。断头率下降40%，减少回花30%，针布轧伤率平均下降50%，生条一级合格率提高10.5%，生条重量不匀率下降0.8%-2.4%，并可促进安全生产，降低劳动强度。基于GT01触摸屏的PLC控制变频器的控制系统方案在A186E梳理机上的应用，提高了单机的机电一体化水平，更为重要的是为提高棉纺全流程运行的稳定性、可靠性奠定了基础，保证了全流程连续、同步、平稳运行，使输出毛条长片段、起长片段、甚至短片段的均匀度都能稳定在一定范围内，从而保证了成纱质量的稳定性。该机所采用的控制系统，完全可以应用于其它国产传统纺织设备的改造当中。改造后的梳棉机生产稳定，整体性能大有提高。改造费用不足6000元，却可较大幅度提高A186型梳棉机的技术性能，延长使用寿命，对我国现有5万多台A186系列梳棉机的技术改造具有一定的推广价值。PROFIBUS is the most widely used process field bus system in the world. There are three types of PROFIBUS: FMS, DP and PA. PROFIBUS-FMS can be used for general automation; PROFIBUS-DP is used for manufacturing automation; PROFIBUS-PA is used for process automation. Using PROFIBUS process field bus technology can save more than 40% of the cost of hardware, engineering design, installation, debugging and maintenance. The technical performance of PROFIBUS-DP makes it applicable to all fields of industrial automation, including metallurgy, chemical industry, environmental protection, light industry, pharmacy, etc. In addition to simple installation, it has a very high transmission rate, up to 12Mbits/s, and a communication distance of 1000m. If a repeater is added, the communication distance can be extended to tens of kilometers. It has a variety of network topologies (bus, star, ring) to choose from. A maximum of 32 Profibus DP slave stations, namely ET200S or ET200eco, can be connected on a network segment. China is the largest textile country in the world, with more than 100000 textile and clothing enterprises. Frequency converter has a huge application space in the field of textile machinery. There are many kinds of textile machinery, including spinning machinery, weaving machinery, knitting machinery, chemical fiber machinery, dyeing and finishing machinery, etc. In general, small power and low-frequency frequency converters are widely used in opening and cleaning machines, carding machines, winders, combers, drawing frames to use roving machines, spinning machines and Luo Jian machines. For weaving machinery, there are sizing machines, warping machines, etc. The role of frequency converter in all kinds of machinery is not the same, and the textile machinery with high efficiency, energy conservation and environmental protection is a necessary technology for China to move from a textile power to a textile power. Take the A186E carding machine as an example. The main process is the opening and cleaning machine, and the next process is the drawing frame, which is mainly used for processing cotton fibers and chemical fibers. The cotton (chemical fiber) roll sent from the previous process or the cotton (chemical fiber) layer supplied by the cotton box shall be opened and combed for impurity removal. Make all curly and blocky cotton wads into a basically straight single fiber state, and in this process, remove the broken seeds, impurities and short fibers left by the clearing process, and then bundle them into cotton slivers of a certain specification, and store them in the sliver barrel for use in the drawing process. Because it is an old machine, there are some technical defects. Due to the high failure of the electromagnetic clutch, it gives fire alarms from time to time, causing certain losses to the production efficiency and product quality. Now, in order to make the doffer speed rise and fall smoothly, we design a double speed in the mechanical transmission
electric machinery
AC variable speed regulation is adopted, so as to realize the arbitrary adjustment of doffer speed rise slope and the arbitrary variable function of doffer process speed. The content of this technology includes advanced information processing and control technology, that is, with the computer as the core
PLC
Industrial personal computer, single chip microcomputer
interface
Control system composed of field bus; Advanced driving technology, including variable frequency speed regulation, AC servo, stepping motor, etc. 1. According to the operation practice of the carding machine and the current level and development of the control field, the transformation plan determines that the guiding ideology of the A186E carding machine transformation is: electromechanical separation, centralized control, and real-time monitoring. Its purpose is to separate the electrical control system from the mechanical system in structure to facilitate the maintenance and repair of the electromechanical system. The separate hardware logic control system is changed to modular centralized control to improve the control level of the carding machine and enhance the reliability of the system; Intelligent technology is used to monitor the operation of the carding machine in real time to guide the operators. The key of A186E electrical transformation is to remove the original relay control system of cylinder motor and doffer motor, and adopt the PLC control frequency converter scheme. The new control system takes Panasonic FP0 PLC as the control core and two JBA series frequency converters as the main control unit to control the operation of the cylinder and the doffer of the carding machine. A186E carding machine control system using PLC and JBA series frequency converter realizes electromechanical integration and relatively complex control. It can also save energy consumption, realize stepless speed regulation, prolong the service life of the machine, improve the production process, improve product quality and reduce production costs. 2. The frequency conversion system of frequency converter control system adopts JBA series AC frequency converter. There are three main speeds when the motor operates, namely: manual speed, low speed and standard speed. The manual speed is used for test run. Low speed is the running speed of the motor during startup transition. The standard speed is the normal running speed of the motor. The running speed of the motor can be changed by changing the corresponding parameter values. The carding machine can work stably and reliably after the production index transformation before and after the transformation, and the carding machine can be conveniently controlled according to the technological requirements of the carding machine. The electrical parameters of the carding machine can be determined according to the type of fiber spun and the requirements for product quality, including the starting time of the cylinder and the doffer and their rotating speed. Through the test of spinning different fibers and comprehensive test, it is found that the average output of the carding machine can reach 21kg/h, which is increased by nearly 35%. The rate of broken ends decreases by 40%, and the return of flowers decreases by 30%. The rate of crimping of card clothing decreases by 50% on average. The first grade qualification rate of green slivers increases by 10.5%. The weight unevenness of green slivers decreases by 0.8% - 2.4%. It can also promote safe production and reduce labor intensity. The application of the control system scheme of PLC control inverter based on GT01 touch screen on A186E carding machine has improved the electromechanical integration level of a single machine. More importantly, it has laid a foundation for improving the stability and reliability of the whole process of cotton spinning, guaranteed the continuous, simultaneous and stable operation of the whole process, and made the evenness of long sliver, long sliver and even short sliver output stable within a certain range, Thus the stability of yarn quality is guaranteed. The control system adopted by the machine can be completely applied to the transformation of other domestic traditional textile equipment. The production of the reformed carding machine is stable and the overall performance is greatly improved. The transformation cost is less than 6000 yuan, but it can greatly improve the technical performance of A186 carding machine and prolong its service life. It has certain promotion value for the technical transformation of more than 50000 A186 carding machines in China.

RELIANCE

ABB

GE

FOXBORO

EMERSON艾默生

A-B

MOTOROLA

TRICONEX

HONEYWELL霍尼韦尔

HIMA

140系列PLC

BENTLY本特利

其他

SST

EPRO

YOKOGAWA

MOOG

NI

WOODWARD伍德沃德

METSO

KOLLMORGEN科尔摩根

力士乐

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YASKAWA安川

AMAT

ICS TRIPLEX

新能源系列

EATON

MVME2305-900逻辑模拟量顺序模块

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