Electronic Cam (E-Cam) - Delta ASDA-A2 Series User Manual

A2
ASDA-
Chapter 7 Motion Control Functions
7.11 Electronic Cam (E-Cam) (ASDA-A2 series L type models do not provide
this function)
From Machine Cam to Electronic Cam
The concept of electronic cam (E-Cam) is to use the software settings to determine the
position relationship between master axis (Master) and slave axis (Slave), almost like a virtual
electronic cam exists between both of them. Please refer to the figure below.
In PT mode, the external input pulse number (from master axis) is the reference of the
position command (from slave axis). It indicates the slave axis follows the master axis. The
relationship between master axis and slave axis is a linear relationship (The ratio is electronic
gear ratio). When the electronic cam function is enabled, the relationship between master axis
and slave axis is no longer a linear relationship only. It will become a cyclic curve relationship,
just like the profile of the electronic cam. In the traditional mechanical system, a machine cam
(physical cam) can convert the simple constant speed motion to variable speed motion,
reciprocating motion and intermittent motion, etc. a wide range of motion control operation.
The electronic cam can provide the same function and make the system to be used for a
variety of motion control applications as well.
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Revision September 2012