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BA SineDrive User's Manual
Vscale can be used to define the maximum speed the motor will move with a ± 10V input.
It can be calculated as follows:
40
.
90
=
Vscale
z
X
rev
1
=
z
sec
6000
/
Where X rev/sec and counts/rev can be replaced by m/s for linear motors.
3.2.4.
PRM:4 Encoder Resolution (ENCODER)
The encoder resolution is only needed for commutation. For rotary motors, this value
represents the line count of the encoder times 4. For example, if the resolution of the
encoder is 1000 (1000 lines/revolution), the user would enter 4000 for this parameter.
The multiplication by four is done in hardware on the controller.
For linear motors, this number represents the number of counts for one electrical cycle.
For example, if a linear motor has an electrical cycle of 2.4 inches, and the encoder
resolution is 1µm, then the user would enter
in
mm
2
4 .
25
4 .
in
Refer to Table 3-4 for parameter settings.
Requires a reset (CTRL-D) before taking effect.
Table 3-4.
Settings for Encoder Resolution PRM:4
PRM:4
Default Value
Maximum Value
Minimum Value
Type
Units
Version 1.4
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sec
counts
Y
PRM
8 :
rev
6
x
counts
m
1
10
1
m
mm
1000
Settings
4000
2147483647
300
Long (32 bit)
Counts
Aerotech, Inc.
=
60960
counts
Parameters
3-3
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