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Summary of Contents for Universal Laser Systems ULS1750C
- Page 1 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 602/483-1214 Volume I, Rev. 3 April, 1992...
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Page 2: Table Of Contents
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 2.2.4 RS-232 SERIAL CABLE CONFIGURATION......8... - Page 3 4.4 LASER REPLACEMENT................29 4.5 LASER INSTALLATION ................30 4.6 BEAM ALIGNMENT ...................30 4.7 DOOR HINGE ADJUSTMENT..............36 4.8 BELT ADJUSTMENT AND REPLACEMENT...........37 4.8.1 X AXIS BELT REPLACEMENT ..........37 4.8.2 X AXIS BELT TENSION ADJUSTMENT ........38 4.8.3 Y AXIS BELT REPLACEMENT ..........39 4.8.4 Y AXIS BELT TENSION ADJUSTMENT ........40 4.9 BEARING ADJUSTMENT AND REPLACEMENT ........41 4.9.1 X AXIS BEARING ADJUSTMENT...........41 4.9.2 Y AXIS BEARING ADJUSTMENT...........42...
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Page 4: Notice
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. - Page 5 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 C0 2 laser based on the latest technology in sealed carbon dioxide devices.
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Page 6: Section 1 - Safety
ULS systems are specifically designed to comply with CDRH performance requirements under 21CFR 1040.10 and 1040.11. No guarantees for suitability or safety for any other use are provided by Universal Laser Systems, Inc. -
Page 7: Safety Labels
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. -
Page 8: Safety Interlock
Label Positions Centered on outside of front door (visible when door is closed). Centered on bottom panel (visible when front door is open). DANGER Inside top door (visible when door is open or INVISIBLE LASER RADIATION WHEN OPEN closed). AND INTERLOCK FAILED OR DEFEATED. AVOID EYE OR SKIN EXPOSURE TO DIRECT OR SCATTERED RADIATION. - Page 9 TOP ENCLOSURE Top Door Top Door Interlock Left Interlock Right Front Door Front Door Interlock Left Interlock Interlock Right Defeat Tool Sutter Open Shutter Control Shutter Switch Solenoid 24 volt Power Supply BOTTOM ENCLOSURE Electrical Schematic of Interlock System...
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Page 10: Cautions
SECTIO 2 - I STALLATIO 2.1 CAUTIO S Install the system on a flat stable base 18-24" 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). - Page 11 Install the system on a flat, stable stand. A stand from 18 to 24 inches in height will provide the most comfortable working height. Custom designed, ergometric stands are available from ULS. Connect the fume exhaust tube on the machine to an external exhaust unit. Connect the water cooling tubes from the water chiller.
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Page 12: Dip Switch Settings
Turn on the laser system power switch. Laser processing (engraving) can normally begin at this point. See SECTION 3 - OPERATION for procedures for focusing laser beam and setting laser controller parameters. 2.2.1 VE TILATIO PROCEDURE To properly exhaust fumes and smoke from the material surface during lasing, 400 cfm minimum is required at the point of 4 inch connection to the system. - Page 13 This switch is used to set the data format and baud rate when the serial interface is used. For details refer to the "Dip Switch Setting Table" in Appendix A. 2.2.3 CO ECTIO WITH COMPUTERS There are two methods for establishing a connection with the computer: Parallel connection (Centronics) •...
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Page 14: Section 3 - Operation
SECTIO 3 - OPERATIO BASIC OPERATI G PROCEDURE Turn on water chiller and check that water is flowing to the laser. Turn laser system power ON. Insert the material to be processed. Adjust focus (reference Section 3.8). Close all access doors. Set laser controller parameters (reference Section 3.6). -
Page 15: Operation Controls
CO TROL PA EL LAYOUT Operation Controls Laser Control Display X POSITION Y POSITION REPEAT REPEAT MODE VIEW TEST ENTER PAUSE POWER PULSE FAST WIDTH PULSE RATE STORE SHUTTER PROGRAM DELETE MODE SELECT OPEN P SPEED CLOSED Laser Control Shutter Controls Keypad Processing Speed Controls... - Page 16 OPERATIO CO TROLS POSITIONING KEYS These keys are used to move the focusing optics manually in any of the arrow directions (four directions) indicated on the keys. Pressing the adjacent two keys together moves it in a diagonal direction. FAST FAST KEY Pressing this key together with an arrow POSITIONING key increases the positioning speed at which the focusing optics move.
- Page 17 REPEAT MODE KEY AND LED REPEAT MODE Used to temporarily store drawings that are being sent by the computer. This function allows one to repeat processing many copies of the same drawing and thus free up the computer for other tasks.
- Page 18 If an error occurs, the indicator will blink. It displays errors both in commands and in communication protocol with the host computer. Normally this indicator is on and not blinking when power to the laser is on. X-Y COORDINATE DISPLAY Y POSITION X POSITION This displays the position of the focusing optics carriage in millimeters from the extreme lower...
- Page 19 Control Panel Processing Speed Adjustment: P-SPEED SPEED SELECT KEYS Press and hold the P-speed key on the control panel then press one of the processing Speed keys (1 to 8) to change the processing speed. The processing speed set by each speed key is as follows: P-Speed Processing Speed...
- Page 20 documentation included with the driver. (This driver is required if Windows is being used and can be purchased from ULS.) OTE: A manually set speed will override a software speed command. LASER CO TROLS For optimum engraving performance, the ULS Laser Systems have been designed so that the laser's power output is directed by a digital control board.
- Page 21 even exposure is obtained by linking the laser control pulses with the movement of the motion system. In this way the number of pulses per unit of travel can be made constant and even exposure of the material to laser radiation can be obtained. In proportional mode the pulse rate of the laser control signal is defined in pulses per unit of travel.
- Page 22 To change Mode: Press Mode key to select the desired mode (P = PPM; C = CPM, = =OFF) To select Pulse Width (0 - 1400): Press PULSE WIDTH key (pulse width data in upper right corner of the display will blink) Enter new data with number key, or edit with DELETE key then enter data Press PULSE WIDTH key to exit Pulse Width...
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Page 23: Focusing Procedure
See Appendix C for suggested laser control parameters for several common materials. CAUTIO : The laser control parameters and speed of processing all effect the final results. It is recommended that experimentation be done on a trial piece of material until desirable results are obtained. -
Page 24: Command System
OTE: The focal length of high resolution optics is 1.5 inches. You must subtract an additional one inch (01000) from the measured work piece thickness to obtain proper focus. For example: Work piece is 1/2" or 500 thousandths (.500) inch thick. Dial the Z axis to 00500 to focus the system to the top of the work piece. - Page 25 There are 56 types of command. Several commands must be combined to execute one action. The commands can be used to write custom software applications. They permit high definition. (Enlargement, reduction, origin movement, window clipping and terminator definition among others.) When using commercial software, the user does not need to understand RD-GL-I, since the software will perform the conversions to RD-GL-I invisibly before outputting to the laser system.
- Page 26 297 x 210 mm 276 x 193.025 mm 431.8 x 279.4 mm 416 x 259.125 mm 17 x 11 in 16.37 x 10.20 in 279.4 x 215.9 mm 259.125 x 199.05 mm 11 x 8.5 in 10.20 x 7.83 in Expanded 431.8 x 297 mm 17 x 11.69 in...
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Page 27: Safety
ULS systems are specifically designed to comply with CDRH performance requirements under 21CFR 1040.10 and 1040.11. No guarantees for suitability or safety for any other use are provided by Universal Laser Systems, Inc. -
Page 28: General Cleaning
GENERAL CLEANING Ensure system power is off. Clean the bottom of the Y rail, right and left sides, and the Y rail groove on both sides using a cotton swab and alcohol. OTE: Keep swabs used in mirror cleaning for general cleaning. After the Y rail is clean, use a clean swab wetted with alcohol to clean the three Y bearings. -
Page 29: Optics Cleaning
CAUTIO : All Lexan surfaces should be cleaned with tissue, NOT paper towels. Use of paper towels or brushes will scratch the Lexan. Dirt in any parts of motion system will cause uneven engraving or loss of position. A OTE: clean machine is the best performing machine. - Page 30 Remove lens holder. The lens holder, one thick lens spacer, one thin lens spacer, and the yellow lens will come out as a unit. Hold the lens holder level so spacers and lens do not fall out. Remove thick lens spacer (always placed on top of the lens). Hold lens holder in left hand and a clean sheet of lens tissue flat in right hand.
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Page 31: First Mirror Cleaning
Diagram: Thick Spacer Optical Element Convex Up Thin Spacer Place the thick spacer on top of the final focus lens element. Carefully slide the lens holder assembly back into the holder on the rail. Replace the four 2-56 screws and tighten gently, just enough to snug the lens in place. Tighten one corner screw, then move to the corner diagonal to it and so on to evenly set the lens. -
Page 32: Output Window Cleaning
This mirror shouldn't require cleaning because it is protected by an output window installed on the shutter block. Removal of this mirror should only be done at the request of ULS and should be performed by a qualified service technician. The first mirror is located inside the shutter block which is at the output end of the laser. -
Page 33: Third Mirror Cleaning
Apply lens cleaning solution #1 to the window using the sprayer bottle. Let sit for one minute. Use a clean, 100% cotton, swab to wipe off any remaining surface accumulation on the window. Wipe one section of the window, then using a clean swab, wipe the next section. Continue in this manner until the entire window surface is clean and dry. -
Page 34: Laser Replacement
The fourth mirror is located just above the final focus lens and is held in place by a single 2-56 socket head cap screw and 2-56 washer (reference Figure 12). Hold on to the #4 mirror bracket, then remove the 2-56 screw. Lift the mirror and holder straight off the angled portion of the optics holder. -
Page 35: Laser Installation
Carefully lift enclosure straight up approximately one foot to remove and then set aside. Looking at the laser from the front of the system, remove the three center 10-32 x 1" screws and washers from the laser support brackets. Next, remove the lower left screw and washer. -
Page 36: Beam Alignment
Check to make sure the laser end plate (which contains the solenoid) is on tight. Now perform a beam alignment on the system. After the beam alignment is finished, the top cover can be reinstalled. BEAM ALIG ME T Tools required: Thermal Paper (available from ULS), Masking Tape, 1/16, .050"... - Page 37 OTE: Upper right display should be flashing. Using keypad, enter "30". Depress and release "Pulse Width" on the keypad (the "30"will stop blinking). Depress and release "Pulse Rate" on the keypad. Lower right display should be flashing. OTE: Using keypad, enter "1200". Depress and release "Pulse Rate"...
- Page 38 Depress "P1" on keypad: a. X axis should move to left. Y axis should move forward. c. Focus lens carriage is now in the lower left corner of the system. Place masking tape in front of the opening of mirror mount on the front of the Y axis arm and left of mirror #3 (reference Figure 13).
- Page 39 The P2 dot at this point will completely cover the P1 dot (no figure eights or other such patterns), thus appearing as a single dot. If the combined dot is centered side to side, then move on to Step 17. If the combined dot is off center to the left of the opening leading to the #3 mirror, then the #2 mirror mount must be moved towards the front of the machine slightly.
- Page 40 If the P2 dot isn't on top of P1, some slight tweaking of the #2 mirror, and possibly the #3 mirror holder must be done. If the P2 dot is higher than P1, rotate the lower right knob on the #2 mirror counterclockwise to lower the P2 dot onto P1.
- Page 41 into the bottom of the square tube that is under the fourth mirror. The tape should run completely across the opening through the final focus lens holder, simulating the position of the lens. At P1 and P2, burn dots on the tape that is stretched across the opening in the square lens holder.
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Page 42: Door Hinge Adjustment
Remove the defeat tool. Remove the power cord. Replace top enclosure. DOOR HI GE ADJUSTME T OTE: Top door hinges should be set just tight enough to hold the door in the vertical position. Hold door in vertical position and tighten hinge screws with Phillips screwdriver so door just stays up. - Page 43 While holding Y rail (reference Figure 2) slowly rotate white nylon bearing by Y axis motor and note friction and torque required to turn both wheels. Remove the two adjusting screws under the front pulley base and remove the two belt keepers (reference Figures 4 and 5).
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Page 44: Axis Belt Tension Adjustment
using the arrow keys, moving up about ten inches (254mm). Next, move to the right ten inches, down ten inches and left again ten inches. These measurements will be very precise if you use the millimeter scale LEDs in the upper right corner of the control panel. Now measure the diagonals of the square with an optical measuring instrument (or calipers if the square is drawn smaller). - Page 45 Turn off the power and remove the power cord. Remove the top enclosure. To remove the top cover, unclasp the four latches that hold the top cover down. Two latches can be found on the right side of the machine and two can be found on the left side of the machine.
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Page 46: Y Axis Belt Tension Adjustment
Proceed to the Y Axis Tension Adjustment. 4.8.4 Y AXIS BELT TE SIO ADJUSTME T Turn power off and remove power cord. Remove top enclosure if not already removed. To remove the top cover, unclasp the four latches that hold the top cover down. Two latches can be found on the right side of the machine and two can be found on the left side of the machine. - Page 47 the front left corner of the machine and the electronics and water lines on the right side of the machine. Clean both sides of front X rail where the four white bearings roll. Hold tissue dampened with alcohol against bearings to clean them (reference Figure 5). While they move, gently grasp the Y rail of the motion system (reference Figure 4) and moving it left and right to roll the bearings.
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Page 48: Y Axis Bearing Adjustment
4.9.2 Y AXIS BEARI G ADJUSTME T Turn system power off. Remove top enclosure is not already removed. To remove the top cover, unclasp the four latches that hold the top cover down. Two latches can be found on the right side of the machine and two can be found on the left side of the machine. -
Page 49: Axis Bearing Replacement
Place #1 Phillips screw driver through socket and loosen Phillips screw. Rotate bearing very slightly away from the Y rail, i.e., towards the narrow side of the eccentric, using the socket. Snug the Phillips screw. Remove screw driver and socket and recheck per Step 7. Adjust until friction is correct. - Page 50 Before removing and replacing X axis bearings, ensure bearings and X axis rail are completely clean per "Bearing Adjustment" procedure. X bearings rarely need replacement; most problems are due to dirty bearings or rails. Also check that the nylon tipped set screws are not sticking. If set screws stick, refer to "Set Screw Adjustment" section before proceeding.
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Page 51: Y Axis Bearing Replacement
Check the front and rear X axis belt to make sure they are tight on both sides of the Y rail. Remove the X motor, if necessary, to shift the belts a tooth or two in either direction to get the belts tight. -
Page 52: Set Screw Adjustment
Ease carriage away from rail and lower slightly. Remove Phillips head screws from the other two Y bearings and remove from carriage. Put a drop of Locktite 242 on screws, place a screw through the new bearing and screw the bearing back into carriage. -
Page 53: 4.10.1 X Axis
4.10.1 X AXIS Turn off system power. Unplug system. Remove top enclosure if not already removed. To remove the top cover, unclasp the four latches that hold the top cover down. Two latches can be found on the right side of the machine and two can be found on the left side of the machine. -
Page 54: 4.10.2 Y Axis
4.10.2 Y AXIS Turn off system power. Unplug system. Remove the top enclosure if not already removed. To remove the top cover, unclasp the four latches that hold the top cover down. Two latches can be found on the right side of the machine and two can be found on the left side of the machine. -
Page 55: Tickle Adjustment
Move the focus lens carriage back and forth and check for drag. Again, observe set screw gaps (Step 1) and adjust (Step 13). Check for excessive play (Steps 8 and 9). Ideally, one should not feel any movement in the final focus lens carriage. - Page 56 Depress and release keypad "Pulse Rate". Enter "2000" on keypad. Depress and release keypad "Pulse Rate". Place a sheet of paper on the support table. Set focus at 2.5 inches for standard lens; 1.5 inches for high resolution lens. Depress and release "P1" on the keypad, motion system should move to left side and final focus lens carriage to the front side of the machine.
- Page 57 If there is no burn then repeat Steps 10-12 until the paper has a faint burn spot. When a burn spot is visible, go to Step 15. When a hole is burned in the paper, lower Pulse Width one number using Steps 9 and 10 until the beam stops burning through the paper.
- Page 58 Verify that the laser does not leak and burn the paper. If it does, repeat Steps 10 through 13 to lower Pulse Width by one. Do not set Pulse Width to 0 of laser is leaking. Call Universal Laser Systems for OTE: recommendations if the Pulse Width is 1 and the system leaks and burns the paper.
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Page 59: Section 5 - Warranty
SECTIO 5 - WARRA TY I -WARRA TY SERVICE A defective laser system may be shipped to Universal Laser Systems, Inc. F.O.B. Scottsdale, Arizona after you call for an R.M.A. number. Defective units will be repaired or replaced at manufacturer's option depending upon the severity of the defect. Charges, if any, will be assessed pursuant to the provisions of the Universal Laser Systems, Inc. - Page 60 APPE DIX APPE DIX A - DIP SWITCH SETTI GS TABLE Dip Switch 1 (DSW1) Dip Switch 2 (DSW2) EXPAND FIELD DATA STOP COMMAND CHARACTER FONT INTERFACE KANJI BAUD RATE DATA PARITY UNUSED SELECT MODE SIZE MODE FLOW MODE RD-GL-I SERIAL Y-DROP 7 BIT...
- Page 61 DSW1 6: Sets field size to maximum available. This switch overrides the field size switches. DSW2 7-8: Sets the field size as long as expand mode is turned off (see DSW1 Switch 6). DSW2 1-8: Used to setup the serial interface communication parameters. DSW2 9: OFF sets the command mode to RD-GL I.
- Page 62 APPE DIX B - LASER SYSTEM SPECIFICATIO S Model Number ULS 1750C Maximum Engraving Area 17" x 11.5" Maximum Engraving Speed 16.5"/second Laser Source 50 Watt C0 2 Laser Beam Diameter - Standard Optics 0.007" - High Resolution Optics (Optional) 0.003"...
- Page 63 Specifications are subject to change without notice.
- Page 64 APPE DIX C - LASER CO TROL -- SUGGESTED PARAMETERS Following are suggested starting parameters for several materials. Parameters can be adjusted to achieve different results. V = Velocity O = Pulse Width P = Pulse Rate Anodized Aluminum V = 1 V = 1 O = 150 O = 300...
- Page 65 Engraving Plastic (micro surface) V = 5 O = 75 P = 19999 Engraving Plastic (medium) V = 5 O = 400 P = 15000 to 19999 Engraving Plastic (reverse) V = 5 O = 250 P = 10000 Note: Focus should be at 2.8".
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