Modernización del sistema de tracción de una máquina recubridora de base posterior para la elaboración de alfombras

Abstract

The textile manufacturer of carpets worked with a coater machine that was of past technology and had anomalies in the rectifier system of half wave of 6 pulses that fed power to the DC motors of independent excitation that were part of the traction system , said DC system was replaced by squirrel cage induction motors operated by 5 Sinamics G120C frequency inverters in vector control to maintain a constant torque in the coater rollers, whose linear velocity command and command instructions were entered in the HMI KTP-600 Siemens to be controlled by a Siemens 1200 PLC based on an elaborated control algorithm that acts as master with communication interface with the slaves in a modbus RTU network, in this way the 5 rollers were synchronized to the same linear speed chosen by the user, with the possibility of making a fine adjustment in each one if necessary to produce a stretch on the carpet. The process now has a warning system for warning alarms from the traction system, peripheral motors and emergency stops.