| Presently , there are some problems such as poor-HMI, hard-operability, the control system crash and so on. The problems increase labor intensity of workers, and make impact on the quality of welding. It is very important to transform the control system of gas pressure welding in the field.According to the technological request and the process of rail gas pressure welding, some transformation and design on the hardware and software is made based on the old control system. A new control system,which is based on FX1N-40MR PLC as the control core of the new system,has been successfully developed. DDM(Digital display and memory instrument) was used for data acquisition and display, whose anti-interference capability is poor, and sometimes make the control system crash, so TP(touch panel)is used in the new control system instead of DDM. The application of TP, not only leave out tradition button, pressed key and indicating lamp, reduce many wirings, and improve the reliability of system.It is proved that this new control system has better HMI, high visualization, easy operation, good Anti-jamming ability , high reliability, easier parameter modification. It keeps the quality of rail stable, and will applied widely with better prospect. |
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