Rockwell Automation Publication 2198-UM004A-EN-P - October 2019 359
Motion Control Applications Chapter 12
7. Set the speed compensation (Vc).
In some applications, the master axis and the cutter axis cannot be the same
speed. The speed compensation is used to change the speed of the cutter
axis. In the cutting zone, if the speed compensation is positive that means
the cutter axis is faster than the master axis. If the speed compensation is
negative that means the cutter axis is slower than the master axis.
Rotary Shear - Fixed Sync Zone
This method can create the E-Cam curve with a fixed sync zone of 51 degrees.
Use KNX5100 software to create this E-Cam curve. The parameter settings are
similar to the rotary shear without sync zone. The software automatically limits
the cutting length by the ratio of cutting length and arc length between cutters
(R=L/a), here, R = 0.07…2.5.
You can also use macro #6 of the drive to build the same E-Cam curve as
KNX5100C software. The advantage of using a macro to build a cam curve is
that when the cutting length needs to be changed, you only need to change the
parameters to generate a new curve. This method is very convenient for users
who change the cutting length frequently.
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