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Brushless DC Servo Driver K-Cube
Pitch
- the pitch of the motor lead screw (i.e. the distance (in mm or degrees) travelled
per revolution of the leadscrew). Not applicable to DDSM100 stages and preset to ‘1’.
Units
- the ‘real world’ positioning units (mm or degrees).
Homing
When homing, a stage typically moves in the reverse direction, (i.e. towards the
reverse limit switch). The following settings allow support for stages with both Forward
and Reverse limits.
Direction
- the direction sense to move when homing, either
Forward
or
Reverse
.
Limit Switch
- The hardware limit switch associated with the home position, either
Forward HW or Reverse HW
.
Zero Offset
- the distance offset (in mm or degrees) from the limit switch to the Home
position.
Velocity
- the maximum velocity at which the motors move when Homing.
Note
The
Min Pos
and
Max Pos
parameters can be used to restrict the working
range of the stage to a particular area of interest.
Note
For DDSM100 users
. The Homing, Limit Switch and Motor parameters
described on the next two pages are not applicable for the DDSM100
stages because the stage does not use a limit switch as a reference point
for homing. Instead, it uses a special reference marker pulse from the
encoder. Homing on these stages involves a search for this reference
marker. Initially, the stage moves in the forward direction and if the
reference marker is found before the stage hits the forward limit switch,
then homing is completed. If not, the stage reverses direction and
continues to search for the reference marker. Due to the different method
used, only the Homing Velocity parameter can be adjusted, although
normally the default value is suitable for nearly all applications. All other
parameters are greyed out.
Note
Typically, the following two parameters are set the same, i.e. both
Forward or both Reverse.
Note
The minimum velocity and acceleration/deceleration parameters for a
home move are taken from the existing move velocity profile parameters
