Rockwell Automation Publication 2198-UM004A-EN-P - October 2019 347
Motion Control Applications Chapter 12
Figure 174 - E-Cam Gear Ratio and Resolution
In the application of the E-Cam function, if you want to change motion curve of
the slave axis in a multiplying manner, use the ID311 (P5.019) ECamCurveScale
to scale the E-Cam curve. This parameter only takes effect in the electronic cam
system, and does not affect the motion behavior in other servo systems. As shown
in Figure 175
,
• If ID311 (P5.019) = 2, the output curve of the slave axis becomes twice
the original curve.
• If ID311 (P5.019) = 0.5, the output curve of the slave axis becomes half of
the original curve.
• If ID311 (P5.019) = -1 is set, the output curve of the slave axis is opposite
of the original curve.
The effective condition of the scaled electronic cam curve can be set by parameter
instance ID376 (P5.088.X Bit2). The condition can be effective immediately or
effective after the clutch is re-engaged. For example, in the application of flying
shear, the cutting length can be adjusted by this parameter. If the clutch is
continuously engaged, and the cutting length needs to be corrected, then this
parameter must be set to take effect immediately. But it must be noted that this
parameter is not allowed to be modified during shearing to avoid damaging the
machine.
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