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Home > 제품소개 > SCANNER > Galvo Scanner > Galvo Motor > 6880

6880
* Model 6880 Moving Magnet Capacitive Position Detector Optical Scanner
* Supports 20 mm and 30 mm beam apertures.
* Moving magnet actuator technology and patented moving dielectric capacitive position detector design.
* Superior positioning speed and higher resolution accuracy and repeatability of any moving magnet galvanometer
* Designed and optimized for speed, size, cost and accuracy
* In combination with 671 servo drivers, the 6860 models can achieve 8 microradians short term repeatability.
* Advanced actuator design in conjunction with 678 servo drivers, the 6860 series can reach speeds up to 1 kHz with step response times in the 0.5 ms range for small angle movements.
* Laser Material Processing
* Biomedical Systems
* Laser Projection
* Imaging and Printing
* Semiconductor Processing

Galvanometer Specifications

All Position Detector specifications apply with Cambridge Technology servo driver after a 30 second warm-up. All angles are in mechanical degrees. Consult manual for complete operating instructions.

Mechanical Specifications

Rated Angular Excursion:   40°
Rotor Inertia:   6.4 gm*cm2, +/-10%
Torque Constant:   2.54X105dyne-cm/amp, +/-10%
Maximum Coil Temperature:   110°C
Thermal Resistance (Coil to Case):   0.75°C/Watt, Max

Electrical Specifications/Drive Mechanism

Coil Resistance:   1.0 Ohms, +/-10%
Coil Inductance:   280uH, +/-10%
Back EMF Voltage:   0.44mV/degree/sec, +/-10%
RMS Current:   7.5 Amperes at Tcase of 50°C, Max
Peak Current:   25 Amperes, Max
Small Angle Step Response Time:   0.9ms, with balanced inertia matched load

Position Detector

Linearity:   99.9%, Minimum, over 40 degrees
Scale Drift:   50PPM/°C, Maximum
Zero Drift:   10 microradians/°C, Maximum
Repeatability, Short Term:   8 microradians
Output Signal, Common Mode:   970 microamperes with AGC voltage of 10VDC, +/-20%
Output Signal, Differential Mode:   22 µA/degree, at common mode current 970 µA, +/- 20%



 
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