In contrast downloading part programs to the AMC takes a small fraction of the time, and if the next part program is ready before the current program completes it can be loaded reducing waiting time to 0.

An AMC3, 3 axis integrated stepper machine controller was retrofitted to the machine using a simple conversion wiring harness supplied with the new controller. The machine performance was tested and a controller configuration file generated using AMC Utilities software.

The AMC3 controller has powerful mini-stepping motor drives fitted internally, these are compatible with the existing motors. With the new motor drives the maximum machine speed was increased from 180 inches per minute to 320.

Increased machine productivity

Increased engraving machine productivity was achieved mainly by: a) minimising machine slow downs, b) moving the machine considerably faster between engraved paths, and c) by dramatically reducing part program loading time.

A large amount of time was saved when the controller ran part programs. The advanced features of the AMC ensured that the machine speed was maximised wherever possible. Part programs were executed in between 50 and 80% of the time taken previously. With the AMC the machine kept moving more smoothly , slow downs were dramatically reduced.

Engraving job programs comprise mostly of movements performing engraving. Additionally there are fast moves between engraved characters or graphics, these are performed far faster by the AMC motion controller reducing the time taken.

Typically with the AMC controller the machine operator can get 30 to 40% more done in a day, this is equivalent to an increase in the working week of almost 2 days. As running costs are almost the same it is estimated that the upgrade costs will be recouped in around 4 months.