COUNTRY:
Italy

REFERENCE STANDARDS:
EN 60439-1; EN 60204; EN 954-1; EN 418; UNI EN ISO 13849-1/2

PROJECT:
Retrofit of a slitter with upgrade of the proportional braking management of the unwinder reel by switching from a proportional valve to two AC motors for the management of the double cone

SUPPLY DESCRIPTION:
Design and implementation of hardware/software/machine board, commissioning, operator training

TECHNOLOGIES USED:
Tia Portal V17, CPU F, HMI Comfort and Basic Panels, Sinamics DC master, Sinamics G120 (CU250 + PM250), CMS1200 (Condition Monitoring System)

DISTINCTIVE ELEMENTS:
By using all four-quadrant drives, we avoided the installation of braking resistors, implementation of servo diameter calculation for the unwinder reel working “under tension” (torque limit proportional to the diameter to ensure constant tangential force), implementation of servo diameter calculation for the rewinder reel working “in loop”

CLIENT BENEFITS:
Greater stability in line speed and better tension control have led to much lower blade wear compared to the original, allowing for a 15% increase in line speed. The installed preventive maintenance system allows continuous monitoring of the motion transmission components and blade wear.