Amada LW500A User manual

990-539 REV F
Nd:YAG LASER WELDER
LW500A/600A
OPERATION MANUAL

LW500A/LW600A PULSED Nd:YAG LASER
ii 990-539
Copyright © 2002 - 2017 Amada Miyachi America
The engineering designs, drawings and data contained herein are the proprietary work of AMADA
MIYACHI AMERICA and may not be reproduced, copied, exhibited or otherwise used without the
written authorization of AMADA MIYACHI AMERICA.
Printed in the United States of America
Revision Record
Revision EO Date Basis of Revision
A 19390 8/02 Production Release
B 42505 09/13 Updates & Corrections
C 42506 11/13 Corrections plus update to Miyachi America name and logo.
D 43483 12/14 Updated to Amada Miyachi America name and logo.
E 43879 11/15 Updated to Amada Miyachi America format.
F 44679 09/17 See ECO for description
This manual covers the following models:
Miyachi Unitek Models Amada Miyachi Models
220VAC Version 400VAC Version 220VAC Version 400VAC Version
LW500A LW500AE ML-2651B ML-2651B-CE
LW600A LW600AE ML-2650B ML-2650B-CE

LW500A/LW600A PULSED Nd:YAG LASER
990-539 iii
CONTENTS Page
Revision Record ........................................................................................................................................ ii
Contents .......................................................................................................................................iii
Contact Us .....................................................................................................................................viii
CDRH Compliance Statement ................................................................................................................viii
Safety Precautions ..................................................................................................................................... ix
General Precautions .......................................................................................................................... xii
Installation Precautions ..................................................................................................................... xii
Operating Precautions ......................................................................................................................xiii
Maintenance/Service Precautions ....................................................................................................xiii
Cold Weather Precautions ...............................................................................................................xiii
Transporting Precautions ................................................................................................................. xiv
Lift Truck/Fork Lift Precautions .......................................................................................................xv
Crane Precautions ............................................................................................................................ xvi
Using Cushions ......................................................................................................................... xvi
Shipping Precautions ...................................................................................................................... xvii
Warranty ...................................................................................................................................xviii
Chapter 1. System Description
Section I: Features ..................................................................................................................................1-1
Section II: System Components .............................................................................................................1-2
Front Panel .....................................................................................................................................1-2
Middle Panel ....................................................................................................................................1-3
Top, Side, and Rear Panels ..............................................................................................................1-5
Laser Oscillator ................................................................................................................................1-7
MLE-116A Control Panel ................................................................................................................1-9
Chapter 2. Getting Started
Section I: Planning .................................................................................................................................2-1
Physical Requirements .....................................................................................................................2-1
Power Requirements ........................................................................................................................2-1
Section II: Installation ............................................................................................................................2-2
Removing the Oscillator Hold-down Brackets ................................................................................2-2
Securing the Laser (optional) ...........................................................................................................2-3
Supplying Power...............................................................................................................................2-4
Cooling Water System .....................................................................................................................2-5
Cooling Water Block Diagram .................................................................................................2-5
Connecting the Hose for Primary Cooling Water .................................................................... 2-6
Supplying the Secondary Cooling Water .................................................................................2-6
Handling Fiber Optic Cables ...........................................................................................................2-7
Minimum Bend Radius for Specified Core Diameter ..............................................................2-7
Optical Fiber Connection .................................................................................................................2-7
Connecting to the Laser Beam Input Unit (Inside the Laser) ...................................................2-8
Connecting to Laser Beam Output Unit (Focus Head) ............................................................2-9

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Page
Chapter 3. Programming Functions
Section I. Touch Screen .........................................................................................................................3-1
About The LCD Screens ..................................................................................................................3-1
How To Use The Touch Screen .......................................................................................................3-1
Blue or Green Buttons ..............................................................................................................3-1
Light Blue Buttons ...................................................................................................................3-2
Main LCD Screens ..........................................................................................................................3-2
Common Items On Each Screen ......................................................................................................3-4
Schedule:# .................................................................................................................................3-4
Form .....................................................................................................................................3-4
Pump .....................................................................................................................................3-4
Water Temp ..............................................................................................................................3-4
Menu Select Buttons .................................................................................................................3-4
Beam .....................................................................................................................................3-4
Trouble Reset ............................................................................................................................3-5
Position .....................................................................................................................................3-5
Main Shut .................................................................................................................................3-5
HV (High Voltage) ...................................................................................................................3-5
Section II. How To Use The LCD Screens ............................................................................................ 3-6
Schedule Screen ...............................................................................................................................3-6
[FORM: FIX] Function ....................................................................................................................3-6
Peak Power ...............................................................................................................................3-6
Reference Value .......................................................................................................................3-7
Shot .....................................................................................................................................3-7
Repeat .....................................................................................................................................3-7
Cool .....................................................................................................................................3-7
Seam .....................................................................................................................................3-7
FORM: FIX Settings ................................................................................................................3-7
Slope ...............................................................................................................................3-7
Flash1 ................................................................................................................................3-7
Flash2 ................................................................................................................................3-7
Flash3 ................................................................................................................................3-7
Slope ..............................................................................................................................3-7
[FORM: FLEX] Function ................................................................................................................3-8
(Left/Right) ......................................................................................................................3-8
Reset .....................................................................................................................................3-8
Seam .....................................................................................................................................3-8
Point 01-20 ..............................................................................................................................3-8
SEAM Weld Screen .........................................................................................................................3-9
Point / Shot / Power ................................................................................................................3-10
Reset ...................................................................................................................................3-10
Seam Weld Node Example .....................................................................................................3-10

LW500A/LW600A PULSED Nd:YAG LASER
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CONTENTS (Continued) Page
Status Screen ..................................................................................................................................3-12
Position Blink .........................................................................................................................3-12
Deionized Water Res ..............................................................................................................3-12
Control Device ........................................................................................................................3-12
Delivery System .....................................................................................................................3-12
Fiber ...................................................................................................................................3-13
Reset Count ............................................................................................................................3-13
ROM Version .........................................................................................................................3-13
Preset Count ............................................................................................................................3-13
Power Monitor Screen ................................................................................................................... 3-14
High / Low Alarm Limits .......................................................................................................3-14
Shot Count / Good Count .......................................................................................................3-14
Lamp Input Power ..................................................................................................................3-14
Reference Setting .................................................................................................................... 3-15
Average ...................................................................................................................................3-15
Energy ...................................................................................................................................3-15
Password Mode Screen ..................................................................................................................3-16
Value Change .........................................................................................................................3-16
Enter a Password ....................................................................................................................3-16
Incorrect Password ..........................................................................................................3-17
Correct Password .............................................................................................................3-17
Password-Protected Settings and Functions ...........................................................................3-17
Printout Mode Screen ....................................................................................................................3-18
Schedule:# ..............................................................................................................................3-18
Schedule .................................................................................................................................3-18
Power Monitor ........................................................................................................................ 3-18
Seam Weld ..............................................................................................................................3-18
Examples of Schedule Printout .............................................................................................. 3-19
Examples of Power Monitor Printout .....................................................................................3-20
Examples of Seam Weld Printout ...........................................................................................3-20
Connecting the Serial Printer .........................................................................................................3-21
Section III. Initialization Screen ..........................................................................................................3-22
Initialize Screen .............................................................................................................................3-22
Initialize ..................................................................................................................................3-22
Network:# ...............................................................................................................................3-22
Ref Temp ................................................................................................................................3-23
Alarm High / Low ..................................................................................................................3-23
Position Auto-Off ................................................................................................................... 3-23
Memory Switch ......................................................................................................................3-23
Memory Switch Functions .............................................................................................................3-24
Section IV. Maintenance Mode Screen ...............................................................................................3-26
Maintenance Mode Screen ............................................................................................................3-26
Mode ..................................................................................................................................3-26
Control ..................................................................................................................................3-27

LW500A/LW600A PULSED Nd:YAG LASER
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Page
Date / Time .............................................................................................................................3-27
Error Record............................................................................................................................3-27
Current ..................................................................................................................................3-27
Pulse Width .............................................................................................................................3-27
Flow ...................................................................................................................................3-27
Chapter 4. Operating Instructions
Section I. Welding Preparation ..............................................................................................................4-1
Preparation .....................................................................................................................................4-1
General Operator Safety ..................................................................................................................4-1
Starting the Laser .............................................................................................................................4-2
Section II. Welding using the Touch Screen Controller ........................................................................4-4
Prepare Processing Point and Set Weld Schedule (by Example) ....................................................4-4
Welding with the Laser Controller ..................................................................................................4-5
Shutdown using the Laser Controller ..............................................................................................4-5
Section III. Welding Using External I/O ...............................................................................................4-6
Shutdown through the External I/O .................................................................................................4-6
Chapter 5. Maintenance
Section I: Precautions ............................................................................................................................5-1
Section II. Troubleshooting ...................................................................................................................5-2
Error Codes ....................................................................................................................................5-2
Error Codes and Corrective Actions ................................................................................................5-2
Section III: Routine Maintenance Schedule ..........................................................................................5-8
Section IV: Maintenance Procedures .....................................................................................................5-9
Overview ....................................................................................................................................5-9
Cleaning the Air Filters .................................................................................................................5-10
Cleaning Optical Parts – Removing Dirt, Dust, Etc. from Optics .................................................5-11
Cleaning Optical Parts – Fogging and Staining .............................................................................5-11
Cleaning Optical Parts – Optical Fiber ..........................................................................................5-11
Power Supply – Replacing the Backup Battery .............................................................................5-12
Cooler Maintenance – Checking Water Level and Adding Water ................................................5-13
Cooler Maintenance – Draining the Primary Cooling Water ........................................................5-14
Cooler Maintenance – Draining Secondary Cooling Water ..........................................................5-15
Cooler Maintenance – Draining the Cooling Water when Laser Is Not Used for
Long Periods of Time or when the Ambient Temperature is Below 0°C ..............................5-15
Cooler Maintenance – Replacing the Water Filter ........................................................................5-17
Cooler Maintenance – Refilling and/or Replacing Ion Exchange Cartridge .................................5-17
Cooler Maintenance – Cleaning the Solenoid Valve Strainer .......................................................5-19
Power Detector Adjustment ...........................................................................................................5-20
Replacing the Flashlamps ..............................................................................................................5-22

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CONTENTS (Continued) Page
Section V: Parts List ............................................................................................................................5-24
Accessories ..................................................................................................................................5-24
Consumable Parts ...........................................................................................................................5-24
Section VI: Repair Service ...................................................................................................................5-25
Appendix A. Technical Specifications................................................................................................ A-1
Appendix B. Electrical and Data Connections ..................................................................................B-1
Appendix C. System Timing ............................................................................................................... C-1
Appendix D. RS-485 External Communication Specifications ...................................................... D-1
Appendix E. Schedule Data Tables ....................................................................................................E-1

LW500A/LW600A PULSED Nd:YAG LASER
viii 990-539
CONTACT US
Thank you for purchasing a Miyachi Unitek Pulsed Nd:YAG Laser. Upon
receipt of the laser, please thoroughly inspect it for shipping damage before you
install it. If there is any damage, contact the shipping company immediately to
file a claim, and notify us at:
Amada Miyachi America
1820 South Myrtle Avenue
P. O. Box 5033
Monrovia, California 91016
Phone: [phone]
FAX: [phone]
E-mail: [email protected]
The contents of this manual are subject to change without notice. If you have
any questions, or find any errors or omissions in this manual, please contact us.
Amada Miyachi America is not responsible for any losses or injury due to the
improper use of this product.
It is our intent to strive for quality in workmanship and materials with every
Laser Welder we manufacture. It is important that you read and understand this
manual before attempting installation or operation.
CDRH COMPLIANCE STATEMENT
The Miyachi Unitek LW500A(E)/LW600A(E) and Amada Miyachi ML-
2651B(-CE)/ML-2650B(-CE) Nd:YAG Lasers are certified to be fully
compliant with all applicable standards and regulations as set forth by the
United States of America’s Health and Human Services (HHS), Food and
Drug Administration (FDA), Center for Devices and Radiological Health
(CDRH), title 21 Code of Federal Regulations (CFR) sections 1002, 1010,
and 1040 for Class IV laser devices.
Reference CDRH Accession number is available upon request.

LW500A/LW600A PULSED Nd:YAG LASER
990-539 ix
SAFETY PRECAUTIONS
Before using this equipment, read the Safety
Precautions carefully to understand the correct
usage of the equipment.
These precautions are given for safe
use of the Laser and for prevention of
injury to operators or others.
Be sure to read each of the instructions,
as they are all important for safe
operation.
The meaning of the words and symbols
are as follows:
DANGER
DO NOT TOUCH THE INSIDE OF THE LASER UNNECESSARILY.
High voltages are present inside the equipment cabinet. Do not touch the inside of the
Laser unnecessarily with the power turned ON.
NEVER DISASSEMBLE, REPAIR, OR MODIFY THE LASER.
These actions can cause electric shock and fire. Do not do anything other than the
maintenance described in the Operator Manual.
DO NOT LOOK AT OR TOUCH THE LASER BEAM.
Both direct laser beams and reflected laser beams are highly dangerous. If the beam
enters the eye directly, it can cause blindness.

LW500A/LW600A PULSED Nd:YAG LASER
x 990-539
WARNING
Wear protective glasses.
Be sure to wear protective glasses while using the laser. Even with eye protection, you may
lose your sight if you look directly at the laser beam.
Do not expose your skin to the laser beam.
Your skin may be severely burned.
Do not touch any processed part during, or immediately after processing.
Welded parts are very hot.
Use only specified cables.
A cable with insufficient capacity or loose connections can cause electric shock or fire.
Do not use a damaged power cable, connecting cables, or plugs.
Do not step on, twist, or tense any power cable. The power cable and connecting cables
may be damaged which can cause electric shock, short circuit, or fire. If any part needs to be
repaired or replaced, consult Amada Miyachi America or your distributor.
Stop operation if any trouble occurs.
If you detect a burning smell, abnormal sounds, abnormal heat, smoke, etc. from the Laser,
turn the power OFF immediately to prevent fire or electric shock. Contact Amada Miyachi
America or your distributor for help.
Ground the Laser.
If the Laser is not grounded, you may get an electric shock when there is trouble or if
electricity leaks through the protective insulation.
Use a stopper plug.
Laser beams are dangerous to the human body. Prevent accidental leakage of the laser
beam by using a stopper (a heat-resistant, laser beam absorbing material).
People with pacemakers MUST stay away from the Laser.
When the Laser is operating, it generates a magnetic field, which adversely affects
pacemakers. People who use a pacemaker must not approach the Laser, or walk around
the laser shop while the Laser is operating, unless their medical doctor has deemed it safe to
do so.