Four-transmission-point-based papermaking machine transmission experimental apparatus

Abstract

A four-transmission-point-based papermaking machine transmission experimental apparatus comprises an upper computer, a PLC (Programmed Logic Controller), a man-machine interface and at least one group of transmission devices, wherein the transmission devices comprise a frequency converter connected with the PLC, the frequency converter is further connected with a variable frequency motor, the frequency converter is communicated with an encoder by optical fiber, four groups of transmission devices are arranged, the upper computer and the PLC are connected by a PPI (Processor / Peripheral Interface) bus, the man-machine interface and the PLC are connected by either a PROFIBUS or an industrial ethernet bus, the frequency converter and the PLC are connected by any one of PROFIBUS, CAN, industrial ethernet and DEVICENET, the frequency converter and the encoder are connected by optical fiber in a one-to-one correspondence manner, and the frequency converter is further connected with a variable frequency motor. A great deal of data signal wires are saved, the construction work amount is greatly reduced, and the reliability is greatly improved; a touch screen is used as an operating platform, thus saving all buttons, having a visual function, and being clear at a glance; and the whole set of device has the advantages of being good in speed regulation effect, less in faults and convenient to maintain.

Description

technical field [0001] The invention belongs to the technical field of papermaking transmission, and in particular relates to a papermaking machine transmission experiment device based on four transmission points. Background technique [0002] With the development of the economy and the improvement of the people's level, the demand for all kinds of paper is increasing; The modified paper production line must have large and medium-sized production capacity, which requires more stringent requirements on the transmission capacity and transmission accuracy of the high-speed production line. The traditional paper machine drive system uses a combination of frequency converters and buttons, connected by many signal lines, and uses various electrical signals to adjust the normal operation of the entire paper machine. The distance varies from tens of meters to hundreds of meters), often resulting in many shortcomings such as fast signal attenuation, high failure rate, large maintena...

AI Technical Summary

Problems solved by technology

[0003] In addition, because the technical level of on-site technicians in papermaking enterprises is generally relatively low, and the highest education level of most front-line operators in most enterprises is only at the college level. An experimental device with this kind of control function can provide preliminary training for enterprise employees, so it is very necessary to make it seamlessly connected with the new system

Images