Stretching line retrofit
August 1st 2010

Southeast Germany-based Brückner Servtec has chosen ProfiNet and Vacon AC drives for a retrofitting project on a film stretching line.

With the ProfiNet (OPTCP) fieldbus for the Vacon NX range of AC drives, a single Ethernet connection can be used to control the AC drive via the PLC, while the Vacon NCDrive tool can be used to diagnose or tune the drive simultaneously.

The computer running the Vacon NCDrive can be located at the factory – in the control room for example – at the Brückner Servtec headquarters, at Vacon headquarters in Finland, or wherever the drive expert is available and there is internet access. This ensures a quick response to all driverelated issues such as tuning or troubleshooting. A firewall ensures only authorised persons have access.

Brückner Servtec chose Vacon NXC cabinet drives to power the new main extruder and two new coextruders, which play an important role in film stretching: extruders have a significant impact on the stretching process and on the layer structure of the end film.