Rev D Mar 2020
Page 36
Chapter 5 PC Operation - Tutorial
2) Enter the required number of steps into the pop up window, e.g. 128
3) Click ‘OK’. Notice that the position display counts up to 128 to indicate a move to
the absolute position commanded.
5.4 Zeroing
To establish a datum from which subsequent position moves can be measured, move
the motor to the required zero position, and then click the ZERO button on the GUI
panel. The motor can also be zeroed from the hardware unit by using the Zero Axis
menu option (see Section 4.4.3.).
5.5 Changing Motor Parameters
The velocity settings relate to the maximum velocities at which a move is performed,
and the acceleration at which the motor speeds up from zero to maximum velocity.
Moves are performed using the drive velocity parameters set in the Move/Jogs tab
(see Section 6.3.1.).
5.6 Jogging
During PC operation, the motor actuators are jogged using the GUI panel arrow keys.
There are two jogging modes available, ‘Single Step’ and ‘Continuous’. In ‘Single
Step’ mode, the motor moves by the step size specified in the Step Size parameter.
If the jog key is held down, single step jogging is repeated until the button is released
- see Fig. 6.3.
In ‘Continuous’ mode, the motor actuator will accelerate and move at the jog velocity
while the button is held down.
5.7 Dual Channel Operation
In some applications (e.g. if the actuators are fitted to a 2-axis mirror mount), it may
be advantageous to move two axes simultaneously.
This is achieved by pairing the drive channels, either in the top panel settings menu
(see Section 4.4.8.) or via the GUI panel by clicking the appropriate enable buttons,
channles 1 and 2, or channels 3 and 4..
Caution
If the actuator is driven into its end stops, the motor may stick and may not
respond to subsequent motion demands. If this is the case, turn the adjustment
knob ob the actuator manually to move the device away from its end stop, then
the motor should move normally.
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