SCENARIO 1
Rollformer consists of an uncoiler, profile rollers and a cut-off.

The distance from the cut coil off zero position to the cut-off is measured and entered into the configuration settings of the controller.

When the coil saver feature is enabled the controller will halt production when the last item for the coil has been fed past the coil cut off position. A message will be displayed requesting that the coil be cut off.

The remaining coil in the roll former will be sufficient to complete all jobs from that coil.

SCENARIO 2
Rollformer consists of an uncoiler, in-line punches, profile rollers and a cut-off.
All product require some sort of punching so there is no requirement for blank items.

This scenario requires two encoders so that at all times the material can be counted and the punch stations can be automatically operated.

The end of a new coil is fed only as far as the "new coil feed position".

The control system uses the encoder labelled "A" to operate the punches during pendant mode as the strip is fed through the rollers to the cut-off.

When the end of the first item is cut off there is only a small amount scrap.

When then coil runs out or the controller stops and requests the coil to be cut-off the counting encoder can be changed over to the encoder labelled "C". This will allow the punch stations to complete the punching of the last item and roll out most of the strip remaining in the roll former.

When the end of the coil reaches encoder "C" the last item an be manually cut off leaving a small piece of scrap.

OTHER SCENARIOS
Dropping component count down to either encoder "A" or "C" will create more scrap but if blank lengths can be used then there is no requirement for a dual encoder system.