LSA-10A-30-D-130 Technical Document
-26-
4-7 Trimmer Function and Adjustable Range
The driver is adjusted according to the following trimmer functions.
VR.No.
Name
Function
Adjustable Range
VR.1
Scale
Adjusts the ratio between
the
input command
voltage and the swing
angle of the output shaft.
For 10V change of the input
command, it is possible to adjust in
the range of 2.2V (corresponds to
8.3°) - 4.4V (corresponds to 16.6°)
at POS-OUT voltage .
12 revolutions trimmer (*1)
VR.2
Offset
Adjusts the misalignment
in the scanner origin and
the electric origin of the
position command input.
When the scale is set at POS-OUT/
input command voltage: 4.125V
(corresponds to 15°)/10V, POS-OUT
is adjustable in the range of ±0.825V
(corresponds to
±
3°).
12 revolutions trimmer (*2)
VR.3
Damping
(Damping Gain)
Adjusts the dumping gain
of the control system.
12 revolutions trimmer
VR.4
P.Gain
(Proportional Gain)
Adjusts the proportional
gain of the control system.
12 revolutions trimmer
VR.5
HNF
(High Frequency Notch
Filter)
Decay of
the
high
frequency resonance.
12 revolutions trimmer
VR.6
RC.ADJ.
(Robust Adjustment
Fine
tuning
of
the
disturbance observer’s
gain.
12 revolutions trimmer
VR.7
OB.Gain
(Disturbance Observer
Gain)
Course adjustment of the
disturbance observer’s
gain.
12 revolution trimmer
VR.8
I.Gain
(Integration)
Adjusts
the stationary
positioning error.
12 revolutions trimmer
VR.9
LNF
(Low Notch Field)
Decay
of
the
low
frequency resonance.
Possible Range of Adjustment:
4-10kHz
12 revolutions trimmer
VR.10
ITCC
(Integration Time
Constant)
Adjusts the Time Constant
of the Integration
12 revolutions trimmer
Note1): Please refer to 4-3 Dimensions for the VR position on the board.
Note2): The adjustment range of the various trimmers is determined by the trimmer variable resi
fixed resistance. If the adjustment specifications of the customer changes significantly, the
fixed resistance may need to be changed.
*1 VR.1: The swing angle of the scale adjustment range is the value including the scanner’s angle
sensitivity error of ±5%. In addition, to ensure that scale is adjusted to the same swing angle of the
adjustment specifications when shipping, the relationship with the positioning command signal has to
be maintained during scale adjustment.
*2 VR.2: The offset changes the variable range according to the scale set value. In addition, the
control range does not change at ±15°, centered on the origin of the sensor.
