The XL208CL BOSS Shear originally had a Negative Line Velocity test in it to prevent the Die from tracking a target that was moving in reverse.

When the XL208CL was replaced with the RE the negative velocity test was simplified into a negative line position test. If the Die began tracking a target when the line position was negative or if the line position changed to negative while tracking the target it would generate the Negative Line Velocity error.

This simplification came with an unintended side effect. In order to cut a very small Auto Crop Piece or a small Coil Trim Cut piece, the line position must be negative while the die is accelerating. The side effect was that attempts to cut these short pieces resulted in a very confusing Negative Line Velocity error.

The Negative Line Velocity test on the RE Dies has now been restored to its original algorithm. The die must be tracking a target and line velocity must be less than -2.5 inches/sec for 40msec in order to cause the Negative Line Velocity error.