THORLABS KIM101 Kinesis User Manual page 45

Drive Settings
Caution
If a channel pair is enabled, then the move and jog step acceleration values are set
the same for each channel in the pair, and are taken from the lower channel
number, either CH1 or CH3.
These parameters define the speed and acceleration of moves initiated by clicking in
the position display, or via the joystick when 'Go To Position' mode is selected.
Maximum Voltage - the maximum piezo drive voltage. Set in the range 85V to 125V.
Step Rate - The piezo motor moves by ramping up the drive voltage to the value set
in the Peak Voltage parameter and then dropping quickly to zero, then repeating (see
Fig. 6.3). One cycle is termed a step. The Step Rate is the velocity to move when a
command is initiated. It is specified in steps/sec, in the range 1 to 2,000.
Step Acceleration - The acceleration up to the step rate. It is specified in steps/sec/
sec in the range 1 to 100,000.
Note
The step size is defined as the distance moved in one step or pulse. This distance
can be adjusted up to about 30% by changing the piezo drive voltage. The actual
step size achieved for a given drive voltage will be dependant on application.
Jog Settings
Caution
If a channel pair is enabled, then the move and jog step acceleration values are set
the same for each channel in the pair, and are taken from the lower channel
number, either CH1 or CH3.
These parameters define the speed and acceleration of moves by jog command,
either from the joystick, GUI panel or via software.
Forward and Reverse Step Size - The distance to move when a jog command is
initiated. The step size is specified by the 'number of steps' (or pulses)', in a jog step,
in the range 1 to 1,000,000.
The optimum step size depends on several parameters including the resistive torque
against which the actuator tip is pushing, the drive voltage, the step rate, active
preload, variance in the frictional behaviour of assembly components, the direction of
actuation and the condition of the actuator.
Mode - The way in which the motor moves when a jog command is received (i.e. front
panel button pressed or GUI panel button clicked).
There are two jogging modes available, 'Jog Step' and 'Jog Continuous'. In 'Jog Step'
mode, the motor moves by the distance specified in the Step Size parameter. The jog
key must be released and pressed again for jogging to be repeated - see Fig. 6.3.
Rev E June 2023
Chapter 6 Software Reference
Page 42