The PLC human-machine interface serves as the central control center, acquiring pressure and temperature transmitter values. Based on these values and pre-set parameters, the system automatically adjusts variable frequency operation and displays real-time operating conditions. It achieves automatic optimized operation, promptly identifies faults, and provides system solutions.
The variable frequency drive (VFD) for the normal temperature cooling water pipeline communicates with the PLC, automatically controlling pressure and flow based on set parameters. The cooling tower fan, based on the return water pipe temperature and set temperature value, uses a PID controller in the VFD to automatically control the cooling curve slope and output frequency according to the temperature difference, achieving rapid cooling. When the temperature falls below a certain limit, the cooling tower fan can shut down, reducing the flow rate from the hot water pool to the cooling tower, and simultaneously reducing power consumption of the fan VFD and cooling tower water pump. The pipeline itself participates in heat exchange.
Leveraging a PLC touchscreen and IoT monitoring, the system provides data visualization, along with integrated customized solutions and 24-hour technical support. It is suitable for new plant planning and existing plant upgrades, comprehensively assisting plastic processing enterprises in maintaining quality, reducing energy consumption, and improving efficiency.
供水-1 (4)(1)
