NI SCXI-1000
NI SCXI-1000
NI SCXI-1000
TD3000张力控制使所控制的牵引机自动跟踪系统的速度变化，并控制输山转矩使带（线）材上表面张力保持恒定。卷曲类控制是其典型的应用，对于收、放卷的控制，变频器内部自带卷径计算模块，能够自动适应卷简直径的变化。
使用TD3300张力控制专用型变频器不仅可以完全替代力矩电机、直流电机、张力控制器等而独立地构成张力控制系统，而且相对于传统的张力控制器加变频器控制方案，使用本变频器可以使系统更简洁、降低成本、易于维护并且获得更为稳定的控制效果
。PLC & Field Bus;
2. Using RISC SuperScalar high-speed CPU, with super performance;
Three high reliability, strict industrial application practice, more than 1000 sets of application performance in China;
4. It has good openness, flexibility and scalability;
Fifth, the project is easy, the interface is friendly, and the maintenance is simple;
2. Industria1″ system communication
Industrial” system uses international standard industrial bus. Field controller supports Profibus, FF, ModBus, Can, etc.
International standard fieldbus, Profibus is the most widely used open fieldbus international standard in the world, divided into FMS, DP and PA
Level 3, DP communication rate can be as high as 12Mb. Profibus is used to connect intelligent devices such as distributed I/0 stations and field bus instruments.
Communication between the process station, operator station and engineering station takes place via the system bus DigiNetS (Industrial Ethernet). user
Different transmission media (RJ45 twisted pair, thin, thick or fiber optic cables and mixed media) and network topology can be selected for the system bus.
Simple layout, due to the use of TCP/IP protocol, the system can also use the public telephone network (dial-up mode) or satellite to achieve ultra-long-distance communication.
Subsystems such as PLC communicate with the Industrial” system through the ModBus protocol interface. The 
