Economic PLC Control in Variable Frequency Drive of Paper Machine
XU De-yu · China Pulp & Paper · 2005
This paper introduces an economic and practical control project in variable frequency drive of paper machine.It uses S7-200 PLC as the core and uses the I/O and communication function to achieve the control in variable frequency drive of middle speed or low speed paper machine.This paper mainly introduces the hardware and software's design of this project and the way using S7-200 PLC to achieve speed chain and charge distribution in variable frequency drive of paper machine.