| Analysis and research in Japan planer ED-225G, based on the original control system, based on current equipment, mechanical and electrical properties of the special requirements, design Planer PLC-based control, all-digital DC speed control system bed electrical drive system. The system Siemens S7-200series PLC as the main control unit, the main drag the UK Continental DC DC governor (590C270A/110KW) as the main speed control device control method, the main moving parts planer Siemens PLCs7-200for logic control, according to process requirements to achieve the various parts of a single movement and interaction. Switch to multi-speed for a given component as can be manually adjust the primary real-time accurate motor speed, a fundamental change to overcome the impact of large planer, efficiency is not high, power consumption and a series of shortcomings. DC has been governor for automatic parameter optimization settings can be adjusted according to speed the process of internal controls automatically adjust the deviation parameters, to make it run in the best state to ensure the main motor speed fluctuation is small, table run smoothly. Paper gives more detailed parts of the system control circuit (including the DC drive system circuit, PLC input and output control circuit, the external actuator circuit) design process and works; of the PLC logic control program design and implementation process, the control system and the advantages of a detailed implementation instructions, and lists the main control program and control procedures table. After a year of actual production run, the system hardware structure is simple, convenient operation, system stability, intuitive, good control of safe, reliable, stable, high precision, speed, and with other control systems planer does not have the advantage, while economical and practical, has broad application prospects... |
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