Universal Laser Systems ULS1750C User manual

OPERATIO AD MAITEACE MAUAL
UIVERSAL LASER SYSTEMS
Model ULS1750C
Universal Laser Systems, Inc.
7707 East Acoma Drive
Scottsdale, AZ 85260
602/ 83-121
Volume I, Rev. 3
April, 1992

NOTICE ...........................................................................................................................i
INTRODUCTION............................................................................................................ii
SECTION 1 - SAFETY ...................................................................................................1
1.1 SAFETY SUMMARY..................................................................................1
1.2 SAFETY LABELS.........................................................................................2
1.2.1 EXAMPLES OF SAFETY LABELS ............................................2
1.3 SAFETY INTERLOCK................................................................................3
SECTION 2 - INSTALLATION......................................................................................5
2.1 CAUTIONS ...................................................................................................5
2.2 SET UP PROCEDURE .................................................................................5
2.2.1 VENTILATION PROCEDURE ..................................................7
2.2.2 DIP SWITCH SETTINGS ...........................................................7
2.2.3 CONNECTION WITH COMPUTERS .......................................7
2.2. RS-232 SERIAL CABLE CONFIGURATION...........................8
SECTION 3 - OPERATION............................................................................................9
3.1 BASIC OPERATING PROCEDURE ...........................................................9
3.2 CONTROL PANEL LAYOUT......................................................................10
3.3 OPERATION CONTROLS...........................................................................11
3. SHUTTER CONTROLS ...............................................................................13
3.5 PROCESSING SPEED CONTROLS............................................................13
3.6 LASER CONTROLS.....................................................................................15
3.7 SOFTWARE CONTROLLED POWER CHANGE (optional) .....................18
3.8 FOCUSING PROCEDURE...........................................................................18
3.9 COMMAND SYSTEM .................................................................................19
3.10 LASER PROCESSING AREA...................................................................20
SECTION - MAINTENANCE .....................................................................................22
.1 SAFETY ........................................................................................................22
.2 GENERAL CLEANING................................................................................23
.3 OPTICS CLEANING.....................................................................................2
.3.1 TOP ENCLOSURE REMOVAL AND REPLACEMENT .........2
.3.2 FINAL FOCUS LENS .................................................................2
.3.3 FIRST MIRROR CLEANING.....................................................26
.3. OUTPUT WINDOW CLEANING..............................................27
.3.5 SECOND MIRROR CLEANING................................................28
.3.6 THIRD MIRROR CLEANING ...................................................28
.3.7 FOURTH MIRROR CLEANING................................................28

. LASER REPLACEMENT.............................................................................29
.5 LASER INSTALLATION .............................................................................30
.6 BEAM ALIGNMENT ...................................................................................30
.7 DOOR HINGE ADJUSTMENT....................................................................36
.8 BELT ADJUSTMENT AND REPLACEMENT...........................................37
.8.1 X AXIS BELT REPLACEMENT ...............................................37
.8.2 X AXIS BELT TENSION ADJUSTMENT ................................38
.8.3 Y AXIS BELT REPLACEMENT ...............................................39
.8. Y AXIS BELT TENSION ADJUSTMENT ................................ 0
.9 BEARING ADJUSTMENT AND REPLACEMENT ................................... 1
.9.1 X AXIS BEARING ADJUSTMENT........................................... 1
.9.2 Y AXIS BEARING ADJUSTMENT........................................... 2
.9.3 X AXIS BEARING REPLACEMENT........................................
.9. Y AXIS BEARING REPLACEMENT........................................ 5
.10 SET SCREW ADJUSTMENT ................................................................... 7
.10.1 X AXIS ........................................................................................ 7
.10.2 Y AXIS ........................................................................................ 8
.11 TICKLE ADJUSTMENT ........................................................................... 9
SECTION 5 - WARRANTY ...........................................................................................53
5.1 IN-WARRANTY SERVICE .........................................................................53
5.2 OUT-OF-WARRANTY SERVICE...............................................................53
5.3 REPACKAGING FOR SHIPMENT .............................................................53
5. FIELD SERVICE...........................................................................................53
APPENDIX......................................................................................................................5
APPENDIX A - DIP SWITCH SETTINGS TABLE ..........................................5
APPENDIX B - LASER SYSTEM SPECIFICATIONS .....................................55
APPENDIX C - LASER CONTROL -- SUGGESTED PARAMETERS ...........56

i
This publication and its contents are proprietary to Universal Laser Systems, Inc., and are
intended solely for the contractual use of Universal Laser Systems, Inc. customers.
This publication and its contents may not be reproduced or distributed for any other purpose
without the written permission of Universal Laser Systems, Inc.
OTICE
Universal Laser Systems, Inc. does not assume any liability arising out of the application or use
of any products, circuits or software described herein. Neither does it convey a license under its
patent rights nor the patent rights of others. Universal Laser Systems, Inc. further reserves the
right to make any changes in any products described herein without notice. This document is
subject to change without notice.

ii
ITRODUCTIO
The ULS series of Laser Processing Systems are designed to provide the user with the flexibility
of computer control combined with a wide variety of functions.
The main features of the ULS 1750C system are:
• Water cooled, RF driven 50 watt C02 laser based on the latest technology in sealed carbon
dioxide devices.
• Digital laser controller providing a wide range of parameters for material processing.
• Class I safety enclosure.
• Fast X-Y laser beam positioning system for quality laser processing at high speed.
• Large material processing area.
• Extended vertical adjustment with one thousandth increment vertical indicator.
• Two types of computer interface -- parallel (Centronics) and serial (RC-232C).
 te: Serial interface is not available if the High Speed Raster Engraving Option
is installed.
• A variety of controls for quick setting of parameters.
• Complete emulation of HP7 75 and Roland DXY 1300 B size plotter.
• Compact design.

1
SECTIO 1 - SAFETY
Please read this section before operating the equipment.
1.1 SAFETY SUMMARY
1. Exposure to laser radiation may produce damage and/or physical burns.
2. Exposure to the beam may cause ignition of combustible materials.
3. When operator or maintenance personnel are working with the laser beam "ON" and any of
the safety interlocks defeated, or covers removed, laser safety glasses must be worn and
care must be exercised not to place one's self or reflective objects in the path of the beam.
Never view laser beam radiation directly or by specular reflection.
. Operation and maintenance must be accomplished in accordance with this manual.
5. The laser in this system emits radiation at wavelength of 10.6 microns in the far infrared
invisible spectrum.
6. A solenoid operated shutter is located between output of the laser and top compartment of
the system. In the OFF position the shutter completely blocks the laser beam before it
enters the work area. Shutter control is located on the lower right corner of the system
control panel. When the shutter switch is open, the LED is on. If any interlocked doors are
open, the shutter blocks the beam regardless of the position of shutter control switch.
OTE: The LED indicates only whether the shutter switch has been set to open or closed.
It does not indicate the physical position of the shutter itself.
7. Under regulations established by the Center for Devices and Radiological Health of the
Food and Drug Administration, the laser contained in this system is a Class IV instrument.
ULS systems are Class I instruments as long as none of the interlocks are defeated and
cover panels are not removed.
8. Improper use of controls and adjustments or performance of procedures other than those
specified in this manual may result in hazardous laser radiation exposure.
9. ULS systems are specifically designed to comply with CDRH performance requirements
under 21CFR 10 0.10 and 10 0.11. No guarantees for suitability or safety for any other
use are provided by Universal Laser Systems, Inc.

2
1.2 SAFETY LABELS
According to CDRH standards, all interlocked and non-interlocked covers that allow access to a
Class IV laser beam must have appropriate laser safety labels attached to them. These labels
must be visible to personnel prior to the removal of the covers. Additional labels must be
installed inside the machine and be visible if the covers are removed from the machine.
Labels that provide manufacturer's name, date of manufacture, description of product, model
number, serial number and compliance statement must also be visible on the outside of the
machine. All CDRH required labels are properly affixed to the machine in the appropriate
locations at the time of manufacture. These labels are not to be removed. If they become
damaged or removed for any reason, please request additional labels from the manufacturer.
1.2.1 EXAMPLES OF SAFETY LABELS
Label Positions
Lower left corner of rear panel, on the outside of
the machine
Lower left corner of rear panel below
manufacturing label (see above label
information).
Below the beam window in top compartment.
Laser Processing System Manufactured By:
Scottsdale, Arizona
Model No:
Serial No:
Date of Manufacture:
Made in USA
This equipment conforms
to provisions of
US 21 CFR 10 0.10
and 10 0.11
AVOID EXPOSURE
INVISIBLE LASER RADIATION
IS EMITTED FROM THIS APERTURE

3
Label P siti ns
Centered on outside of front door (visible when
door is closed).
Centered on bottom panel (visible when front
door is open).
Inside top door (visible when door is open or
closed).
Two on frame inside the top compartment (visible
when top cover is removed).
One on each side of interlock defeat tool (visible
when interlock tool is installed).
1.3 SAFETY ITERLOCK
The laser system incorporates a safety interlock having an electrical potential of 2 V DC
between terminals. When the top enclosure of the chassis is removed, the terminals of the
interlock connector at the front of the enclosure are no longer in contact and the laser beam will
be blocked by the shutter. A shorting plug, called an interlock defeat tool, is provided to over-
ride the safety interlock for testing and alignment procedures only. The diagram below is an
electrical schematic detailing the interlock system and the interlock defeat tool.
Cauti n: The interlock defeat tool is utilized only when the top enclosure must be removed
for test purposes and beam alignments. Goggles must always be worn when the
defeat tools is in use.
DANGER
INVISIBLE LASER RADIATION WHEN OPEN
AND INTERLOCK FAILED OR DEFEATED.
AVOID EYE OR SKIN EXPOSURE TO
DIRECT OR SCATTERED RADIATION.

24 volt
Pow r
Supply
Shutt r
Sol noid
Shutt r
Control
Switch
Sutt r
Op n
LED
Front Door
Int rlock L ft Front Door
Int rlock Right
Top Door
Int rlock L ft Top Door
Int rlock Right
TOP ENCLOSURE
BOTTOM ENCLOSURE
Int rlock
D f at Tool
Electrical Schematic of Interlock System

5
SECTIO 2 - ISTALLATIO
2.1 CAUTIOS
• Install the system on a flat stable base 18-2 " high, only in the upright position. Ideally,
the top of the system should be mid thigh to waist high.
• Avoid places where the system may be exposed to high temperatures, dust, or high
humidity (humidity exceeding 60% or where the temperature is near the dewpoint).
• Avoid places where the system may be exposed to high levels of vibration or electrical
noise. We recommend using a high quality surge protector (20 Amp capability) to protect
the laser system's electronics.
• The power supply cord and input/output cables for the computer should be connected
firmly to avoid disconnection or malfunctioning during operation. Use grounded (3 prong)
outlets only. Do not defeat the ground connection under any circumstances.
• When the power is turned on, the automatic origin setting operates and the arm and
focusing optics carriage move. Keep hands or objects out of the path of the arm\optics
holder.
• When not using the system, unplug the power cord.
• NEVER lubricate any of the mechanical parts!
• Do not apply any pressure or shock to the arm or optical carriage.
• When the X-Y rails get dirty, wipe them off with a soft dry cloth. If the dirt is severe, wipe
it off lightly with alcohol. Do not use water. D n t use silic ne-impregnated cl th,
neutral detergents r rganic s lvents. See the maintenance manual for details on
cleaning of the system.
• Do not move arm or optical carriage manually if the power to the system is on!
2.2 SET UP PROCEDURE
The Following is a description of the basic set up procedure.
To connect a ULS series system to a computer for the first time: