When the chemical desalting water system adds activated carbon filter, control functions of old MODICON PLC system needs to be extended.
化学除盐水系统增加活性炭过滤器，需要在原有MODICON PLC程控系统上进行控制功能扩展。
2
The application of PLC in the control system of the pulse blow bag filter is described. Lays stress on the new way of energy saving of the bag filter.
介绍了可编程控制器在脉冲反吹袋式过滤器控制系统中的应用，重点探讨了袋式过滤器节能降耗的改进方案。
3
To enhance control ability and accuracy, the filter algorithms are adopted by PLC when gathering analog data and implementing the PID algorithm in frequency conversion control.