Sino-galvo SG7310 User manual

Model SG7310
Galvanometer Scanner
Instruction
Manual
SINO-GALVO (BEIJING) TECHNOLOGY CO., LTD.

SINO-GALVO(BEIJING) TECHNOLOGY CO., LTD.
The Most Professional Laser Scanning Galvanometer Scanners
- 1 -
Company Profile
Sino-Galvo (Beijing) Technology Co., Ltd. is a high and new technology enterprise which is
located in the Zhongguancun high-tech industrial parks. We specialize in optical scanning
galvanometers and its related product’s development, production and sales.
Since our company was established in 2001, we introduced the international advanced
professional technology, and after several years’ hard working, our company has developed a
series of new laser galvanometer system with independent intellectual property. Our scan heads
are widely applied in the laser precision engraving, laser cutting, laser welding, rapid prototyping,
drilling positioning, medical cosmetology, scientific research and military field, etc.
Sino-Galvo owns a number of high standard electronics, optical and precision machinery research
specialists. We also have the international first-class optical testing instruments and
microelectronics test equipment. Relying on Chinese Ministry of Aviation’s technology advantages,
strict quality management systems and perfect production process, we can provide customers
with the first-class products and comprehensive application solutions. Thus, our galvanometer
scanner’s performance has already reached the international leading level in this field.
Our products has already got the EU CE certification, and we also obtained a number of invention
patent and other related intellectual property right certificates. The whole production process
accord with ISO9001 quality system standard, and now we have won the major market share in
the high-end application market in China, moreover, we exported our products to Italy, Britain,
Spain, Singapore, India, Russia, America, etc.
Sino-Galvo depends on the leading technical superiority in laser industry, with the management
idea of People-oriented, Innovation by science and technology, taking customer’s demand as
center to be looking forward to your visit and cooperation, and making a contribution together to
Chinese laser industry.

SINO-GALVO(BEIJING) TECHNOLOGY CO., LTD.
The Most Professional Laser Scanning Galvanometer Scanners
- 2 -
Contents
Chapter 1 Summary of SG7310 Scanning system....... - 3 -
Chapter 2 SG7310 Technical Parameters ................... - 4 -
2.1 The Galvanometer Structure and Wiring .......... - 5 -
2.2 Power supply wiring diagram.......................... - 7 -
2.3 The External Wiring for DB25 Connection ........ - 8 -
Chapter 3 Self-checking and FAQ ............................. - 9 -
Special Notice.......................................................... - 10 -

SINO-GALVO(BEIJING) TECHNOLOGY CO., LTD.
The Most Professional Laser Scanning Galvanometer Scanners
- 3 -
Chapter 1 Summary of SG7310 Scanning system
Sino-Galvo’s galvanometer motors are designed by adopting the magnet-moving structure,
combining the most advanced international photoelectric sensor technology and the PDM
control mode, and using the Military-grade processes and technologies.
The model SG7310 galvo scanner has the good running stability, high positioning accuracy,
fast marking speed, strong anti-interference ability, the overall performance of SG7310 has
reached the international leading level in this field. The advantages are as following:
■Adopted the photoelectric sensors which imported from America, and owned the
proprietary intellectual property rights.
■Differential photoelectric sensor for accurate detection of motor rotor position, good
linearity, lower drift, high resolution and repeat positioning.
■Accurate load design for 10 mm mirrors, high accuracy of motor assembly, reasonable
structure, very small static friction coefficient and zero offset, all ensured the best dynamic
characteristics for the whole system.
■Drives with advanced detection ability of position and speed, greatly improved the
dynamic response performance and scanning speed of the whole system.
■Design of overload, over-current and reverse connect protection, makes the system
running more reliable.
■The whole system adopted the optimization Designing of electromagnetic compatibility,
with high signal-to-noise ratio and strong anti-interference ability.
■This scanner system solved the common problems of motor temperature drift, signal
interference and zero drift, etc.

SINO-GALVO(BEIJING) TECHNOLOGY CO., LTD.
The Most Professional Laser Scanning Galvanometer Scanners
- 4 -
Chapter 2 SG7310 Technical Parameters
SG7310 Motors & Drive board technical parameters
Motor Specification
Working Temperature
0-45℃
Linearity
99.9%
Setting Time
≤0.35ms
Scale Drift
<40PPM/℃
Zero Drift
<15μRad./℃
Long-term Drift Over 8 Hours
<0.5mRad
RMS Current
2.0A
Peak Current
15A(Max)
Maximum Scan Angle
±15°
Storage Temperature
-10 to +60℃
Resolution
12μrad
Repeatability
8μrad
Input Aperture
10.0mm
Beam Displacement
13.4mm
Motor Weight
120g
Frequency
≤1000Hz
Servo Drive Board Specification
Input Voltage
±15VDC
Interface Signals
Digital
XY2-100
Analog
±5V,±10V
Position Signal Input Resistance
1KΩ±1%
Position Signal Input Scale Factor
0.33V/°
Position Signal Output Scale Factor
0.33V/°
Working Temperature
0-45℃
Dimension(L×W×H)
75×50×28mm

SINO-GALVO(BEIJING) TECHNOLOGY CO., LTD.
The Most Professional Laser Scanning Galvanometer Scanners
- 5 -
2.1 The Galvanometer Structure and Wiring
Scanner motors drawing
Scanner housing

SINO-GALVO(BEIJING) TECHNOLOGY CO., LTD.
The Most Professional Laser Scanning Galvanometer Scanners
- 6 -
External housing size drawing

SINO-GALVO(BEIJING) TECHNOLOGY CO., LTD.
The Most Professional Laser Scanning Galvanometer Scanners
- 7 -
2.2 Power supply wiring diagram
Power Supply

SINO-GALVO(BEIJING) TECHNOLOGY CO., LTD.
The Most Professional Laser Scanning Galvanometer Scanners
- 8 -
2.3 The External Wiring for DB25 Connection
Digital
Digital Wiring Diagram
Analog Wiring Diagram

SINO-GALVO(BEIJING) TECHNOLOGY CO., LTD.
The Most Professional Laser Scanning Galvanometer Scanners
- 9 -
Chapter 3 Self-checking and FAQ
Before starting up the whole system, please check carefully to confirm whether there is any
problems, such as: plug virtual connection or without connection, two mirrors touched with
each other, drive board signal input errors, etc. Only after finishing all checking, then you can
turn on the power supply.
Fault phenomenon
Reasons
Solutions
System has no any reactions
Power supply was not
turned on or the circuit
did not connect well
Check if the power supply is
connected well
Scan motor swings lightly
after turning on
Too much interference or
input signal circuit did not
connect very well
Check the interference
sources and the input signal
circuit
Motor screams after turning
on, the drive board and
motor overheat
Driver board and motors
did not connect well/The
mirrors and clips become
less crowded
Check the wiring/And
checking the mirrors with
clips
Mirror reflection power is
weak
Light path is not straight
Adjust the light path of the
marking machine; if can not
solved, please contact with
our company
Marking figures becomes
one straight line
One motor can not move
normally
Checking the wiring
connection between the
motors, drive boards and
control board
Waves exist in the marking
line
Grounding problems/
Surrounded by strong
interference sources/The
Anti-interference ability
of marking control board
is poor
Check if the ground
connection is well/Check if
there is a strong interference
source surrounded/
Check the position control
signal of marking control
board

SINO-GALVO(BEIJING) TECHNOLOGY CO., LTD.
The Most Professional Laser Scanning Galvanometer Scanners
- 10 -
Special Notice:
1. Before starting up the marking system, please carefully check whether the wiring
sequence of DB25 on the scanner housing is connected correctly or not, otherwise the
galvanometer scanner can not work normally or even damage.
2. Two motors and drive boards must be connected according to corresponding serial
numbers and can not be interchangeable, otherwise there will appear self-excitation
phenomenon.
3. Please ensure the accuracy of the laser light path output, otherwise it will affect the
accuracy of marking, or even it will lead to marking displacement and non-uniform of laser
intensity, etc.
If you have any questions, please contact our Technical Services Department:
Service consulting hot-line: 400-055-8805
SINO-GALVO (BEIJING) TECHNOLOGY CO., LTD.
Add: No. 209, 2/F West, North Tower, Caihong Mansion, No.11 Shangdi Xinxi Road, Haidian
District, Beijing, China. 100085
Tel: [phone]/9755
Fax: [phone]
E-mail: [e-mail]
Website: www.sino-galvo.com