8 Adjustment of Internal Settings
E-625 Piezo Servo Controller
PZ166E
Version: 2.0.0
55
For the linearization of the negative direction of motion: Reduce the target position
using the MOV command stepwise from the upper travel range limit to 0 µm.
2.
Using the trimmer adjustment tool, adjust the R144 (p. 37) ILS adjust potentiometer on
the main board until the position of the positioner changes as linearly as possible as a
function of the target position.
Adjusting the ILS adjust potentiometer also changes the sensor gain.
3.
After setting the optimal linearity, repeat the adjustment of the static sensor gain for
the closed-loop operation (p. 51).
4.
Disconnect the E-625 from the power source by removing the power cord of the wide
input range power supply from the power socket.
5.
Close the E-625.
8.6.4
Digital Corrections (only E-625.CR)
In addition to the adjustments described in this user manual, the E-816 computer interface
submodule can be used to digitally correct the following values:
Value
Unit
Function
Sensor coefficient Ks
μm/V
When the sensor signal changes by 1 V, the position changes
by Κs μm.
Sensor offset Os
μm
When the sensor signal is 0 V, the
position is Os μ
m.
Coefficient of the
piezo voltage
amplifier Kpzt
V/V
When the DA converter output changes by 1 V, the piezo
voltage on the amplif
ier changes by Κpzt V.
Offset of the piezo
voltage amplifier
Opzt
V
When the DA converter output is 0 V, the piezo voltage on the
amplifier is Opzt V.
Only make changes to these settings if you have replaced the positioner and/or have
recalibrated the displacement of the positioner as described in this user manual.
For additional information, consult the "Calibration" section in the user manual for the E-816
computer interface submodule.
