UV CURING SYSTEM FOR OFFEST MACHINE

At JUPITER we received a new order from a Graphic Arts Technical Solutions (GATS) for controlling intensity of UV cassettes manufactured by them. These cassettes are liquid and air cooled. As UV lamps require high voltage to arc and run, this is the first HT project for JUPITER.

This was achieved by using electronic ballast, whose communications to PLC are via CAN bus. We have used OMRON PLC and HMI for this project, the entire control panel was built and tested. The panel was certified to be IP 54 standards. The UV lamp's intensity are controlled linearly via analog signals to electronic ballast. As UV lamps also generate significant heat, along with intensity control we also control the water cooling flow, temperature, the air flow to dissipate the heat.

The operator can control the intensity of the lamps via HMI. When there is no sheet pass the intensity can go as low as 10% for power saving and heat transmission increasing the life of the printing machine. Power saving of almost 70% was recorded when compared to traditional transformer type methods. UV ink curing was tested and proved even at 10,000 sheets/hr.

This machine has already been commissioned on site in 2018 and running efficiently on site till date.