6SL3130-7TE21-6AA3电源模块

• 西门子系统驱动技术公司的调速控制器具有多种型号规格，可以满足现如今工业领域的各种需求。范畴从用以中低端特性的经济实用多用途变频调速器，到MW级范围之内靠谱大中型控制器，一直到用以数控车床和加工机器高动态性驱动机构。
  

• 用以全部机械自动化和加工厂运用制造业的低电压和交流伺服电机 - 将来对策：经久耐用，高动态，功能齐全。

SIMATIC S7-300传送到120/230 V AC电源负荷电源芯片(PS)。

接口模块(IM)，用以双层配备时联接中央控制系统(CC)和拓展设备(EU)。

根据分布式系统中央控制系统(CC)和3个拓展设备(EU)，SIMATIC S7-300能够实际操作高达32个控制模块。全部控制模块皆在机壳中运作，而且*风机。SIPLUS控制模块适合于拓展的自然条件:

适用-25至 6O℃的环境温度及高环境湿度、冷凝水及其有雾的自然条件。防立即日晒、日晒雨淋或水溅，在防水等级为IP20网络机柜内使用中，可以直接在车辆或室外建筑应用。不用空调系统的服务器机柜和IP65机壳。

依据自动控制原理，时速陡坡回应可分为过阻尼回应、临界阻尼回应和欠阻尼响应。基础理论中说，临界阻尼回应是理想的控制方法，这类回应方法既完成了掌控的*性又完成了操纵的稳定;过阻尼回应就是为了可靠性放弃*性;欠阻尼回应其实是为了*性放弃可靠性。但是，临界阻尼因为标准太过严苛，在实际控制里是难以实现的。

依据剩下的二种响应曲线的特点，小编认为CPU运作时好应用欠阻尼响应曲线，其原因是:CPU运行状况下，对增粘剂积淀时长的需求**于增粘剂成分的稳定;但是其他状况下应用过阻尼响应曲线，这时对相对含量平稳规定**于积累下来的*性。

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因而，运用S7-300运作时的部门块OB100在CPU运行上只实行一次的特点，对增粘剂交流伺服电机的控制方法根据发电机组不同类型的运行情况实施了不一样响应曲线中的控制措施。从总体上，在CPU运作时(这时增粘剂存储容量必然为零)，根据运行机构块OB100中送出去高速运行指令至增粘剂交流伺服电机，使操纵曲线图变成欠阻尼回应情况并实现对存储芯片中增粘剂的*积淀。但在非CPU运行情况，操纵增粘剂交流伺服电机的FC应用将送出去一般速率指令，使操纵曲线图变成非常接近临界阻尼的过阻尼回应情况。

在纤维滤棒成型机的生产中，为*滤棒质量，每当速度*一定的设定值时，机组就会剔除此时的滤棒。此时机组的速度是不断变化的，按通常方式无法计算出具体的剔除支数。这对统计生产效率带来了相当的困难。

笔者可以得到动态的车速反馈，但这条反馈曲线是不断波动和变化的非线性曲线。对于非线性曲线，数学上只能够采用面积积分求解的计算方法。对于此项目就是要求给出一定时间内主电机的圆周行程，即机组一段时间内所生产的滤棒长度。

从这一角度出发，笔者考虑采用了对车速进行模拟积分的计算方法，即从积分的基本定义出发，求出剔除时间内的滤棒生产长度L=Z(△v*At)，再除以单个滤棒长度得剔除支数的计算方法。

按照积分的定义要求，积分求解是在一定条件下才能够成立。这个条件就是At要足够的小即At一0。在实际过程中，近似认为At=20ms时可以满足条件。此时，计算得出的滤棒支数与实际滤棒支数的误差在±3支以内。在精度上，以高生产速度3300支/分钟计(此时滤棒长度为120mm)，±3支的精度是完全可以满足精度要求。所以笔者认为只要将△t控制在20ms时就可以满足积分求解的条件。

设计

简单的结构使得S7-300使用灵活且易于维护:

安装模块:

只需简单地将模块挂在安装导轨上，转动到位然后锁紧螺钉。集成的背板总线:

背板总线集成到模块里。模块通过总线连接器相连，总线连接器插在外壳的背面。模块采用机械编码，更换极为容易:

更换模块时，*拧下模块的固定螺钉。按下闭锁机构，可轻松拔下前连接器。前连接器上的编码装置防止将已接线的连接器错插到其他的模块上。

Short response times and optimized processes are the basic re for competitiveness in global markets because the product lifecycles are becoming shorter and shorter.

PROFINET ensures maximum flexibility in plant structures and production processes, and it enables you to implement innovative machine and plant concepts. For example, mobile devices can also be integrated at locations that are difficult to access.

Flexible topologies

In addition to the linear structure characterized by the established fieldbuses, PROFINET also enables the use of star, tree and ring structures. This is made possible by switching technology via active network components, such as Industrial Ethernet switches and media converters, or by integrating switch functionality into the field devices. This results in increased flexibility in the planning of machines and plants, as well as savings in cabling.

The PROFINET network can be installed without any specialist knowledge at all and meets all re that are relevant to the industrial environment. The "PROFINET Installations Guidelines" assist manufacturers and users with network planning, installation and commissioning. Symmetrical copper cables or RFI-resistant fiber-optic cables are used, depending on the application. Devices from different manufacturers are easily connected via standardized and rugged plug-in connectors (up to IP65/IP67 degree of protection).

By integrating switch functionality into the devices, linear topologies can be created that are directly oriented toward an existing machine or plant structure. This reduces cabling overhead and cuts down on components such as external switches.

IWLAN

PROFINET also supports wireless communication with Industrial Wireless LAN, thus opening up new fields of application. For example, technologies subject to wear, such as trailing cables, can be replaced and automated guided vehicle systems and mobile operator panels can be used.

Safety

The PROFIsafe safety profile, which has been tried and tested with PROFIBUS and which permits the transmission of standard and safety-related data on a single bus cable, can also be used with PROFINET. No special network components are necessary for fail-safe communication, which means that standard switches and standard network transitions can continue to be used without any restrictions. In addition, fail-safe communication is equally possible via Industrial Wireless LAN (IWLAN).

Open standard

PROFINET, the open multi-vendor standard (IEC 61158/IEC 61784), is supported by PROFIBUS and PROFINET International (PI). It stands for maximum transparency, open IT communication, network security and simultaneous real-time communication.

Thanks to its openness, PROFINET provides the basis for a standardized automation network in the plant, to which all other machines and devices can be connected. Even the integration of existing plant components, for example using PROFIBUS, presents no problems due to the use of network transitions.

Use of web tools

Thanks to the unrestricted support of TCP/IP, PROFINET permits the use of standard web services such as web servers. Irrespective of the tool used, information from the automation level can be accessed from virtually any location using a commercially available internet browser. This considerably simplifies commissioning and diagnostics. Users can then decide for themselves how much openness to the IT world they want to allow for their machine or plant. This means that PROFINET can be used simply as an isolated plant network or connected via appropriate security modules, such as the SCALANCE S modules, to the office network or the internet. In this way, new remote maintenance concepts or the high-speed exchange of production data become possible.

Expandability

On the one hand, PROFINET facilitates the integration of existing systems and networks without any great effort. In this way, PROFINET safeguards investments in existing plant components that communicate via PROFIBUS and other fieldbuses such as AS-Interface. On the other hand, additional PROFINET nodes can be added at any time. By using additional network components, network infrastructures can be expanded using cabling or wireless methods – even while the plant is operating.

Greater global competition means that companies must use their resources economically and efficiently. This applies in particular to production. This is where PROFINET ensures greater efficiency. Simple engineering guarantees fast commissioning, while reliable devices ensure a high level of plant availability. Comprehensive diagnostic and maintenance concepts help to reduce plant downtimes and keep maintenance costs to a minimum.

One cable for everything

PROFINET permits simultaneous fieldbus communication with isochronous mode and standard IT communication (TCP/IP) on one cable. This real-time communication for the transmission of user/process data and diagnostic data takes place on a single cable. Specific profile communication (PROFIsafe and PROFIdrive) can be integrated without any additional cabling. This solution offers a wide scope of functions at a low level of complexity.

Device and network diagnostics

By retaining the tried and tested PROFIBUS device model, the same diagnostics information is available with PROFINET. In addition, module-specific and channel-specific data can also be read out from the devices during device diagnosis, enabling faults to be located and easily. Apart from the availability of device information, the reliability of network operation has top priority in the network management.

In existing networks the Simple Network Management Protocol (SNMP) has established itself as the de facto standard for the maintenance and monitoring of the network components and their functions. PROFINET uses this standard and gives users the opportunity to maintain their networks with tools that are familiar to them, such as the SINEMA Server network management software.

For easier maintenance of PROFINET devices, both on-site and remotely via a secure VPN connection, application-specific websites can be set up on the web server of the field devices using the familiar HTML standard.

Simple wiring

Particularly stringent demands are made on the installation of cables in the industrial environment. In addition, there is a re to set up industry-standard networks in the shortest possible time without any special knowledge.

With FastConnect, Siemens offers a high-speed installation system that meets all of these re. FastConnect is the standard-compliant, industry-standard cabling system consisting of cables, connectors and assembly tools for PROFINET networks. The time required for connecting terminals is minimized by the simple installation method using just a single tool, while installation errors are prevented by the practical color-coding. Both copper cables and glass fiber optic cables can be easily assembled on site in this way.

Fast device replacement

PROFINET devices are identified by means of a name assigned during configuration. When replacing a defective device, a new device can be recognized from its topology information by the IO controller and a new name can be assigned to it automatically. This means that no engineering tool is necessary for the replacement of equipment.

This mechanism can even be used for the initial commissioning of a complete system. This speeds up commissioning, particularly in the case of series machines.