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HARSFEN0602
is equivalent to 1000 counts
EM[5]=1 First index of the table
ET[1]=1000
ET[2]=2000
ET[3]=1000
ET[4]=2000
ECAM table values
EM[1]=1 Activate ECAM.
- For every input voltage less than 1v, the external position command will be 1000.
- For input voltage of 1.5v the external position command will be 1500.
- For input voltage of 2.75v the external position command will be 1250.
- For every input voltage greater than 4v, the external position command will be 2000.
Example:
Consider an application, in which a two-axis x-y servo system is used to plot chocolate
teddy bears on birthday cakes.
Head contour
Eyes
Cake
moves
The cakes come from the oven on a conveyer. An incremental encoder measures the place of
the conveyer. Each time a new cake arrives, it operates an optical switch, which sets the
RLS input of the amplifier. In response to the RLS, the x-y axes begin to contour the head of
the teddy bear, drawing it with chocolate. Then the chocolate flow is stopped for a while,
while the x-y axis travel toward starting the eyes of the teddy bear. After drawing eyes to the
bear, the x-y stage returns to initial position, to be ready for another cake.
Both the Amplifiers that manage the x and the y-axes work in the ECAM mode. They get
their position reference as a function of the location of the conveyor, via the auxiliary
encoder input. The ECAM motion starts when a cake arrives at the plotting station. It
continues until the conveyor had traveled 4000 counts.
One of the Amplifiers controls, by a digital output, the flow of the chocolate out of the
drawing nozzle.