THORLABS GVS001 User Manual
  1. Manuals
  2. Brands
  3. THORLABS Manuals
  4. Industrial Equipment
  5. GVS001
  6. User manual

THORLABS GVS001 User Manual

Scanning galvo systems
Hide thumbs Also See for GVS001:
Table of Contents

Advertisement

Quick Links

GVS001 and GVS002
GVS101 and GVS102
GVS201 and GVS202
GVS301 and GVS302
Scanning Galvo Systems
User Guide
Original Instructions
HA0193T

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the GVS001 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for THORLABS GVS001

Summary of Contents for THORLABS GVS001

  • Page 1 GVS001 and GVS002 GVS101 and GVS102 GVS201 and GVS202 GVS301 and GVS302 Scanning Galvo Systems User Guide Original Instructions HA0193T...

  • Page 2: Table Of Contents

    Single- and Dual-Axis Scanning Galvo Systems for Small Beam Diameters Contents Chaper 1 Overview ..................... 1 1.1 Introduction ..................1 1.2 System Description ................2 Chaper 2 Safety ......................5 2.1 Safety Information ................5 2.2 General Warnings ................5 Chaper 3 Installation &...

  • Page 3: Chaper 1 Overview

    A choice of mirror coating is available as follows: GVS001 and GVS002: Single- and Dual-Axis Systems with Protected Silver Mirrors GVS101 and GVS102: Single- and Dual-Axis Systems with Protected Gold Mirrors GVS201 and GVS202: Single- and Dual-Axis Systems with 400-750 nm Broadband...

  • Page 4: System Description

    Single- and Dual-Axis Scanning Galvo Systems for Small Beam Diameters 1.2 System Description 1.2.1 Introduction Galvo Scanners are widely used in applications such as laser etching, confocal microscopy, and laser imaging. A galvanometer is a precision motor with a limited travel, usually much less than 360 degrees, whose acceleration is directly proportional to the current applied to the motor coils.
  • Page 5 Chapter 1 Overview 1.2.3 The Mirror The mirror assembly is attached to the end of the actuator, and deflects the light beam over the angular range of the motor shaft. Scanning galvo applications demand high speed and frequencies of the shaft rotation, and so the inertia of the actuator and mirror assembly can have a profound effect on the performance of the system.
  • Page 6 Single- and Dual-Axis Scanning Galvo Systems for Small Beam Diameters 1.2.4 Servo Driver Board The servo circuit interprets the signals from the position detector, then uses positional error, speed and integral of current terms to output control voltages to drive the actuator to the demanded position.

  • Page 7: Chaper 2 Safety

    Chapter 2 Safety Chapter 2 Safety 2.1 Safety Information For the continuing safety of the operators of this equipment, and the protection of the equipment itself, the operator should take note of the Warnings, Cautions and Notes throughout this handbook and, where visible, on the product itself. The following safety symbols may be used throughout the handbook and on the equipment itself.

  • Page 8: Chaper 3 Installation & Initial Set Up

    Single- and Dual-Axis Scanning Galvo Systems for Small Beam Diameters Chapter 3 Installation & Initial Set Up 3.1 Dimensions 3.1.1 Motor Assembly Dimensions 1.49 (37.8) 0.87 (22.0) Ø 0.1 (2.5) Ø 0.9 Ø 0.5 (12.6) (23.2) 1.22 (31.0) 0.09 (2.3) 0.06 (1.5) all dimensions in inches (mm Fig.
  • Page 9 Chapter 3 Installation & Initial Set Up 3.1.3 Single Axis Mount Dimensions 1.5 (38.0) 0.75 (19.0) 0.53 (13.5) 0.59 (15.0) 0.35 (9.0) 0.33 (8.5) Ø 0.52 (13.2) M3 x 0.5 -6H 0.98 0.43 (11.0) (25.0) 0.55 (14.0) 0.33 (8.5) 0.55 Ø...
  • Page 10 Single- and Dual-Axis Scanning Galvo Systems for Small Beam Diameters 3.1.4 XY Mount Dimensions 1.5 (38.0) Ø 0.52 (13.2) 0.67 (17.0) 0.06 (1.5) 0.6 (16.0) 0.07 0.04 (1.8) (1.0) 1.58 (40.0) 1.16 (29.5) 0.24 0.39 0.75 0.75 (5.0) (6.0) (10.00) 0.55 (19.0) (19.0)
  • Page 11 Chapter 3 Installation & Initial Set Up 3.1.5 Heatsink Dimensions 100.0 (3.94) GHS002 Drill & Tap M3 Thru 97.0 (3.82) 52.0 (2.05) 19.0 (0.75) 11.20 10.40 (0.44) (0.41) Fig. 3.5 Heatsink Dimensions 3.1.6 Servo Driver Board Baseplate Dimensions 44.2 (1.74) 45.0 (1.77) 33.0 (1.3) 3.5 (0.14) DIA and...

  • Page 12: Mechanical Installation

    If the accuracy of the system is in doubt, e.g due to accidental adjustment of trim pots, contact Thorlabs for information on the tuning procedure. During Installation, ensure that the motors are connected to the driver card to which they were tuned.
  • Page 13 For most applications, the mounting bracket will provide adequate heat sinking, however for more vigorous applications, it may be necessary to fit some heatsinking in addition to the galvo motor mount. Thorlabs supply a combined post adapter and heatsink (GHS003) suitable for both single and dual axis applications.

  • Page 14: Electrical Installation

    3.3 Electrical Installation 3.3.1 Choosing A Power Supply Thorlabs recommends using the GPS011 linear power supply to power the galvo controller board(s) as this power supply has been specifically designed for this purpose. The GPS011 can power up to two driver cards under any drive conditions and is supplied with all the cables required to connect to the driver cards.
  • Page 15 Chapter 3 Installation & Initial Set Up Caution Both switching and linear power supplies can be used with the Thorlabs galvo systems, however it is important to limit the inrush current when the power supply is turned on, in order to ensure that the power supply reservoir capacitors on the board are not damaged by the large surge currents that can occur on power-up.
  • Page 16 Fig. 3.12 Connector Identification 1) Identify connector J10 on each driver board, and make power connections as shown below. Thorlabs supply a suitable PSU (GPS011) for powering a single or dual axis system (see Section 3.3.1.). A bare cable, crimp connectors (Molex Pt No 2478) and housings for use with general lab PSUs is supplied with each driver board.
  • Page 17 Chapter 3 Installation & Initial Set Up Caution During item (2) and (3) use only the cables supplied. Do not extend the cables. The driver boards and motors are calibrated with these cables. Using different cables will affect the performance of the system. Longer cables are available as a custom part but the units will require re-calibration if these are not specified at time of order.
  • Page 18 Single- and Dual-Axis Scanning Galvo Systems for Small Beam Diameters 4) Connect a command input (e.g. function generator) to J7 of each driver board as shown in Fig. 3.16. J7 accepts Molex pins Pt No 56134-9100. Note The scanner accepts a differential analog command input. If the scaling is 0.8 Volt per degree mechanical movement (see Section 3.3.5.), -10 V to +10 V gives -12.5 to +12.5 degrees mechanical movement.
  • Page 19 Chapter 3 Installation & Initial Set Up J6 Diagnostics and J7 Command Input Mating Connector Details Mating Connector body: Manufacturer: Molex, Mfr. P/N: 513530800 Example Vendor: Farnell, Vendor P/N: 1120387 Crimps (22-26AWG): Manufacturer: Molex, Mfr. P/N: 56134-8100 Example Vendor: Farnell, Vendor P/N: 1120545 Crimps (22-28AWG): Manufacturer: Molex, Mfr.
  • Page 20 Single- and Dual-Axis Scanning Galvo Systems for Small Beam Diameters 3.3.4 Diagnostic Signal Descriptions Scanner Position - This signal is proprotional to the position of the scanner mirror, with a scaling of 0.5 Volts per degree of mechanical movement. Internal Command Signal - The command signal following amplification by the input stage.

  • Page 21: Chaper 4 Operation

    Chapter 4 Operation Chapter 4 Operation 4.1 General Operation 1) Connect the system as described in Section 3.3. 2) Apply power to the driver boards. 3) Input a command signal to each driver board to obtain the desired behviour. Note After powering the boards, there may be a delay of up to 10 seconds before the motors start to follow the command signal.

  • Page 22: Recommended Scanning Angles

    Lastly, on dual-axis systems, there is an offset alignment between the X and Y axis mirrors that also limits the scan angle. The table below gives recommended scanning angles for various beam diameters. GVS001, GVS101, GVS201 and GVS301, Input Beam Diameter Mechanical Scan Angle...

  • Page 23: Chaper 5 Troubleshooting

    Chapter 5 Troubleshooting Chapter 5 Troubleshooting 5.1 Common Problems Some of the more common problems encountered when using galvanometers are details below. Motor fails to respond to the command signal This can occur for a number of reasons. The most likely are: 1) power is not correctly applied to the board 2) one of the cables is faulty or not connected properly 3) a fault has been triggered...
  • Page 24 Single- and Dual-Axis Scanning Galvo Systems for Small Beam Diameters Mirror periodically shoots off to one side and then stops If the mirror suddenly shoot off to one side and then stops it is likely that either the position sensing circuitry is not functioning correctly or the motor cable is incorrectly wired.
  • Page 25 Chapter 5 Troubleshooting Overshoot in position signal which grows over time It is possible that the position of the motor may show an overshoot when driven with a large square wave or similar, and that this overshoot will grow with time until a fault is triggered.

  • Page 26: Galvanometer Faults

    Single- and Dual-Axis Scanning Galvo Systems for Small Beam Diameters 5.2 Galvanometer Faults The driver electronics monitor numerous signals to ensure the scanners operate safely and the fault protection circuitry will normally prevent any damage. However, the user should be aware that the galvanometer may become permanently damaged if the system becomes unstable (manifested by a screeching noise, self excitation and unpredicable movement of the scanner).

  • Page 27: Appendix A Specifications And Associated Products

    50 g Operating Temperature Range 0 ~ 40° C Optical Position Sensor Output Range 40 to 80 µA Note *The way our mirrors are tested is continually updated, please consult www.thorlabs.com for more information. Page 25 Rev 22 Feb 2019...

  • Page 28: Associated Products

    Product Name Part Number 2D Galvo System - Protected Silver Mirrors GVS002 1D Galvo System - Protected Silver Mirror GVS001 2D Galvo System - Protected Gold Mirrors GVS102 1D Galvo System - Protected Gold Mirror GVS101 2D Galvo System - Broadband E02 Mirrors...

  • Page 29: Appendix B Calculating The Power Dissipation

    Chapter 5 Troubleshooting Appendix B Calculating the Power Dissipation B.1 Motor Heatsink The power dissipated in the motor can be estimated by measuring the RMS current drawn from the PSU and then using the following equation: x [(I ) / 2] rms+ rms- Where P...

  • Page 30: Appendix C Reasons For Image Distortion

    Single- and Dual-Axis Scanning Galvo Systems for Small Beam Diameters Appendix C Reasons For Image Distortion The deflection of a laser beam with a two-mirror system results in three effects: (1) The arrangement of the mirrors leads to a certain distortion of the image field – see Fig.
  • Page 31 Chapter 5 Troubleshooting As a result, you will find the scanning field turn out to be a "pillow-shaped" image, see Fig. C.2 below. Fig. C.2 Pillow-shaped Field Distortion Caused by the Arrangement of Mirrors Page 29 Rev 22 Feb 2019...

  • Page 32: Appendix D Regulatory

    Single- and Dual-Axis Scanning Galvo Systems for Small Beam Diameters Appendix D Regulatory D.1 Declarations Of Conformity D.1.1 For Customers in Europe See Section D.2. D.1.2 For Customers In The USA This equipment has been tested and found to comply with the limits for a Class A digital device, persuant to part 15 of the FCC rules.
  • Page 33 Chapter 5 Troubleshooting D.2 CE Certificates Page 31 Rev 22 Feb 2019...
  • Page 34 Single- and Dual-Axis Scanning Galvo Systems for Small Beam Diameters Page 32 18728-D01...
  • Page 35 Chapter 5 Troubleshooting Page 33 Rev 22 Feb 2019...
  • Page 36 Single- and Dual-Axis Scanning Galvo Systems for Small Beam Diameters Page 34 18728-D01...
  • Page 37 Chapter 5 Troubleshooting Page 35 Rev 22 Feb 2019...
  • Page 38 Single- and Dual-Axis Scanning Galvo Systems for Small Beam Diameters Page 36 18728-D01...
  • Page 39 Chapter 5 Troubleshooting Page 37 Rev 22 Feb 2019...
  • Page 40 Waste treatment is your own responsibility. "End of life" units must be returned to Thorlabs or handed to a company specializing in waste recovery. Do not dispose of the unit in a litter bin or at a public waste disposal site.
  • Page 41 www.thorlabs.com...

This manual is also suitable for:

Gvs002Gvs102Gvs201Gvs202Gvs302Gvs301 ... Show all

Table of Contents