LSA-10A-30-D-130 Technical Document
-14-
2-4-1 Supplementary Explanation of Optical Scanner Operating conditions Form
[10] Load Moment of Inertia (Unit: [g-cm
2
])
This indicates the moment of inertia of the load device attached to the output shaft of the mirror, shutter,
etc.
・
The possibility of reducing settling time increases as the load moment of inertia decreases.
Caution: If the rigidity of the load device is too low, the resonant frequency decreases. When the
resonant
frequency decreases correspond to the control zone, the response characteristics
may be affected adversely. Please take into consideration moment of inertia and rigidity
when designing the load device.
[11] Maximum Amplitude (Unit: [°])
This indicates the maximum range of movement while in use, including offset.
・
The control range of LSA-10A is ±15° centered on the origin of the scanner (the position when input is
0V).
[12] Full Scale Voltage (Unit: [V])
This indicates the ratio between the input command voltage and the swing angle of the output shaft.
・
If there is nothing specifically specified, the other conditions are taken into consideration and
adjustments are made according to one of the following.
a) Input Command Voltage: Positioning command signal (IN-MON) at 20Vp-p is 8.25V (corresponds
to 30°) ± 5%
b) Input Command Voltage: Positioning command signal (IN-MON) at 20Vp-p is 5.5V (corresponds
to 20°) ± 5%
・
Please refer to “Trimmer Function and Adjustable Range” (4-7) regarding adjustable range.
・
Values change according to the scanner (angle sensitivity). a) and b) above are the values of
LSA-10A-30.
[13] Offset Position (Unit: [V])
This indicates the offset of the origin of the scanner and the electric origin of the position command input.
・
If there is nothing specifically specified, the command signal during 0V input is adjusted to 0V ±5mV
(corresponding to ±0.018°).
(LSA-10A Angle Sensitivity: if 0.275V/°)
[14] Extended Cable Distance Between Scanner and Driver (Unit: [meter])
This indicates the length of cable between the scanner and driver.
When extending the length, please use cable thickness over AWG22 for both the motor and sensor wiring.
(As an option, a Extension cable [refer to 5-1] has been included.) If there is nothing specifically specified,
make adjustments without utilizing the extension cable.
・
If a Extension cable exceeding 2m is utilized between the scanner and driver, adjustments must be
made with the Extension cable attached in advance.
・
The allowed cable length of the sensor lead wire utilized with this scanner is 10m.
・
Increasing the length of the sensor lead wire may increase noise, increasing the possibility that the
scanner malfunction.
[15] Power Capacity (Unit: [W])
If power capacity is limited, please notify us of the power capacity used.
In addition, please notify us of whether the device is performance or power capacity-emphasized.
・
The power source used in our adjustments is ±24V and 240W (AD240-24: COSEL).
(We will select a power source closest to the expected power capacity among those available to our
company and we will assess the device.)
・
The cable length between the power source and the driver during our adjustments is 1m.
