System scenario:<br>The paper machine electric transmission control system uses Siemens PLC, display control touch screen and ABB inverter two-stage control scheme.<br>High-resolution full-digital speed chain given for a given value.<br>The basic control logic of single motion/linkage, operation/crawling, tap and start/stop, relaxation/tightening, speed difference setting, load distribution, etc. The speed difference between the main transmissions and the various chain logic control divisions in the system is set control.
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