Research On The Control System Of Mobile Rail Flash Butt Welding Machine Based On CC-link

Because of the rapid development of domestic railway, the higher requirement to the rail welding equipment in continuous rail construction was put forward, it consists of the following aspects:the high stability, the high reliability and the convenience of maintenance. The flash butt welding with its advantages of high quality, shot welding time, small heat affected zone has been widely used in rail welding. But the welding machine has high failure rate, because equipment is mobiled frequently, and so it cause the control cable often damaged between the machine and the control cabinet. Because the control cable has many cores, the welder’s maintence is difficulty, and so it affects the progress of rail construction badly. According to the reason above mentioned the subject was established.This subject is based on wireline communications to implement the information exchange between the machine and the control cabinet. It could reduce equipment failure rate and the difficulty level of maintenance, by decreased the control cable core. The wireline communications between the machine and the control cabinet was realized by CC-link bus. The CC-link bus is three-wire system bus. It has characteristics of high transmission speed and high anti-interference, and can reduce the control cable core greatly.T The CC-link bus has the reliable error handling mechanism, the good real-time and the strong anti-interference ability, and it was suitable for using in harsh conditions. For the mobile flash welder has the problem of too many connecting cables, long distance and the high failure rate, the project that based on the hardware and software with the CC-link bus is designed to solve this problem. On the basis of the host module FX2N-16CCL-M、the PLC FX2N-64MR、the digital module AJ65SBTB1-16D/T. AJ65SBTB1-16D the control system of the mobile rail flash welder was redesigned. The data was acquired from CC-link function module and sent back to the CC-link controller by the master station, controlling the flash welder.