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SYNRAD Series48 Laser Operation & Service Manual

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1. A 46 Appendix A Supporting Documentation Q2 LE dl d U UM U 310 SS3 Nn 39NVH3 1OL 119 83571 180 NS 01 53995 4305 WOLLO OL 3SN LON OG SAONI NI 38V SNOISN3MWIG 777 SILON NOILVHI3N3 VM 53825 NILNnOMN oin 5 3 dete MET nul gt gt Ye e 0 gt oG 4 Y e t i CI L DN 48 5 Outline Mounting Diagram A 47 Series 48 Lasers Operation and Service Manual 2214428 uoqunaad 9p V 89507 QF 591496 18865 8661 Oc 15 ava 00 609 1 018 8 215
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3. 10 2 3 Description of Physical Operation 11 ZU Plasma Secon 11 2 32 Optical csse ie eR Rea tede 11 2 4 Laser Power Control deste 12 2 4 1 Tickle Pulse t n desee 13 2 4 2 PWM Clock Frequency uen cetero sese 13 2 4 3 Low Frequency Gated Operation 15 2 5 Description of Electrical Operation 15 2 5 1 PWM Control Circuitry tt eene 15 2 5 2 Fault Shutdown Conditions 16 2252 Power On ibus betur INNO esee 16 2 5 4 RE Driver IV oui cists iced 16 2 6 Duo Lase Operation 48 5 seese 17 3 Physical cioe vs ve ead onde 19 3 1 Controls and Indicators iss 19 Sell Sutter Sw e IN gatos sii sce a extr mugitus 19 3 1 2 Power On LED iiss axis a 20 3 2 MN ates as des 20 SAGA 20 dieti E 21 3 0 DBO 21 3 1 7 Command e e eee eet 21 3 1 9 DC Power Cables 21 3419 e debet tes qub Deans 21 3 1 10 Laser Exit Aperture
4. sss 34 6 4 Operation in Continuous Wave CW Mode 35 6 5 PC Control OF 35 7 Maintenance and Troubleshooting 37 8 Return for Factory 39 service Request Form ete reise seres 40 Appendix A Supporting Documentation Appendix B UC 1000 Universal Laser Controller ii Series 48 Laser Operation and Service Manual List of Figures 1 1 European Compliance Mark coho sd elec e sesse 4 1 2 Declaration of Conformity ies Ren Coi ERO Fen 5 2 1 Average Laser Output vs Percent PWM Duty Cycle 10 23 Sed cao DD 11 2 3 Beam Characteristics 12 2 4 Typical PWM Drive Signal er 12 2 5 Tackle Pulse eno de dee actio Sean Sed Rea ades 13 2 6 Typical 5 KHz Command Input Waveforms For Gated Operation 14 2 1 Modulation Waveforms Se dti p Ahn dietus 14 2 8 Driver IV nedum deste asi 18 3 1 48 1 48 2 Physical Features Location Diagram 19 3 2 48 5 Physical Features Location Diagram
5. I seve 21 3 1 11 Diode Pointer Power Connector 21 3 1 12 Mounting of Optical Accessories 21 Series 48 Lasers i Operation and Service Manual Table of Contents Continued 4 Interface Requirements 23 4 1 UC 1000 Universal Laser Controller 23 42 JC DPOWODSUDDLD 23 4 2 1 48 1 48 2 23 4 2 2 ABD Model 23 43 9 ic acest GOES lev wads acc abies 23 4 4 Cooling Requireimebls 25 4 4 1 48 1 48 2 Cooling seen 25 442 48 5 Cooling 27 5 Unpacking and Setup att E WE iu taie a ecd 29 5 1 Unpacking Initial Inspection 29 2 2 MOUNDIS edd dien oie 20 5 3 System Interconnections 30 5 3 1 48 1 48 2 Interconnections 30 5 3 2 48 5 Interconnections sss see 30 6 Operating Instructions tase a se 33 6 1 Oen Ellas Rio got da Ra USER RON 33 6 2 Om Check OUE vata tas 33 6 3 Operation in Pulsed
6. 5 5 T 5 5 55 ue 1 Lo sinal Lo sinal 1 amplitude 1 amplitude JC Dut 1C Dut Lo sinal hahe Lo sinal 1 amplitude F amplitude NNMERO NITE uS m us Modulation Modulation Figure2 7 Modulation Waveforms 14 Series 48 Laser Operation and Service Manual Ch 2 Theory of Operation 1 us wide tickle pulse at a frequency greater than 5 kHz may cause unwanted lasing Special provisions must be made for maintaining a ready plasma state without lasing at frequencies greater than 5 kHz For high speed applications that require a PWM frequency beyond 5 kHz consult the factory for more information If a 1 us tickle is supplied at 5 kHz PWM may be set to in dependent higher frequency but must go to near zero 1 duty cycle to ensure laser turn off 2 4 3 Low Frequency Gated Operation If your laser application requires relatively short gating pulses at repetition rates below 500 Hz each gated pulse of laser output will exhibit some leading edge overshoot regardless of the frequency This is because a cooler lasing medium the CO gas is more efficient than a hotter one The effect is more pronounced at lower gating frequencies since the gas has more time to cool between lasing If your application cannot tolerate this small spike of excess energy output on the leadi
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8. Gate Function The GATE input connector BNC or subminiature phono jack provides an input for a TTL level signal to cycle the beam on and off in response to an external pulse train The gate function can be used in all five active modes Front panel operating controls or remote inputs set the laser power level On the standard UC 1000 the gate input is set to internal pull up normally on mode A logic high input signal or an open disconnected GATE input connector will cause the beam to turn on To gate the beam off a logic low input or short circuit must be applied to the GATE input connector UC 1000X Mod X controllers have the gate input set to internal pull down normally off mode This prevents the beam from being enabled unless a logic high 42 5 to 5V signal is applied to GATE input connector The pull down normally off mode ensures the laser beam is always off in the event the gate signal is open or disconnected short circuited to ground or if an asserted logic low state exists while the UC 1000 is powered up If your application changes you can reconfigure from one version to the other by changing a switch setting inside the controller Consult the UC 1000 manual for detailed information Series 48 Lasers B 3 Operation and Service Manual
9. PR CSS 8 N lt gt QU E 2 a 22 P b be N h 5 7 bn lt f 5 End R lt Ca u SD DETAIL A UE IM ge 2 TS S P d E 5 y iut o A sar m 4 EX x A m d NE SS ATER OUTLET Sie d E ATER INTAE S Cx ee A AS SS gt G STRAIT EL O FITTIN FITTIN DETAIL ALL FITTINS NEED E RESSED COMLETELY ON FITTIN OTION UANTITIES OF OT TYES ARE SI ED IT LASER SEE NOTE Figure 4 4 48 5 Laser Cooling Kit Series 48 Lasers Operation and Service Manual 27 Ch 4 Interface Requirements 28 Series 48 Lasers Operation and Service Manual Ch 5 Unpacking and Setup Chapter 5 Unpacking and Setup 5 1 Unpacking Initial Inspection Place the shipping container on a sturdy level surface and open the top of the box Verify that the following items are included in the container Series 48 Laser Operation and Service Manual Spare Fuse s One 10 Amp 48 1 One 20 Amp 48 2 Two 20 Amp 48 5 DB9 Connector DB9 Cover Kit Cooling Kit Warranty Registration Card Final Test Data Report Carefully remove the Series 48 Laser from the container and remove the outer foam packing material Do not discard the shipping container or the foam packing since these are required if the laser is ever returned to SYNRAD or a SYNRAD Authorized Service Center Inspect the laser housing for any visible sig
10. eel MELE PII Lo ISH 9 VP su zz j uses Od 9d Ww ari x 1009S2u8W 2 WWEeLdvo1 e 9021 WWE Ldvo1 SH 1 19d 9d arid 5052017 09 099 22005 602201 09 1 lt 09 099 li 08 04945 90 Sevesz SW 02 90dS9dNS vo m 141 E 06 S06v4Hl is i 50 99 i HOLIMS INMd HOLIMS YOLVINDAY Ug 777 3SH3A3H Wa 390001 SVM SLO 5 16 98 cvOl NOlLdilH2S3G ava uogpjuaumooq lt xipuoddy Appendix UC 1000 Laser Controller Appendix B UC 1000 Universal Laser Controller Series 48 Lasers B 1 Operation and Service Manual Appendix UC 1000 Laser Controller UC 1000 Laser Controller The UC 1000 is designed to serve as a general purpose interface between user signals and SYNRAD s complete line of CO lasers For additional information consult the UC 1000 manual anv bx cu fs MAN 50 MAN POWER POWER ON Q ADJ STBY MN UC 1000 Front Panel MADE IN USA o GATE Rear Panel UC 1000 Power Controller UC 1000 Operating Modes UC 1000 operating modes are selected by means of a front panel six position rotary switch The operati
11. The method of RF excitation on which the Series 48 is based provides excellent discharge stability easily controlled output power and modulation and convenient interfacing to auto mated systems Coupling between the RF driver and the laser is based on switching and transmission line technology U S Patents 5 008 894 and 5 602 865 The frequency of RF drive is approximately 45 MHz and is factory calibrated to match the resonant frequency of the plasma tube Power control of the laser beam is achieved by pulse width modulation PWM of the RF drive circuit Modulation control can be used to gate the laser on and off at time intervals synchronized with automated processing equipment It can also be used to control instantaneous power by adjusting the pulse width PWM duty cycle at a fixed modulation frequency Both methods can be used simultaneously LASER OUTUT OER ARITRARY SCALE DUTY CYCLE Figure 21 Average Laser Output versus Percent PWM Duty Cycle As shown in Figure 2 1 above the PWM on time percentage PWM duty cycle exerts a non linear power function as power saturation is approached flattening out at approximately 95 duty cycle SYNRAD recommends using a 95 maximum signal since little or no increase in laser output power occurs between 95 and 100 duty cycle It is safe to operate at 10096 duty cycle by eliminating all PWM control and simply applying on off gating however you can expect a 596 increase
12. SYNRAD Series 48 Lasers Model Number 48 1 28 W 48 2 28 W 48 5 28 W J Version Operation and Service Manual RELEASE v5 0 7 19 99 Synrad Inc 6500 Harbour Heights Parkway Mukilteo WA 98275 425 349 3500 email synrad synrad com FAX 425 485 4882 In U S 1 800 SYNRADI Important Notice of Modification for Synrad J 48 Series CO Lasers Effective September 1 1999 This information is important if you use or plan to use the DB 9 connector for external control monitoring of the laser Keyswitch version A remote interlock function has been added to the keyswitch version of the laser via the DB 9 connector This function will provide the remote interlock capability described in the latest CDRH regulations and is in addition to the remote keyswitch capability provided on earlier version lasers For the laser to lase pin 6 must be connected to pin 7 and pin must be grounded On the DB 9 connector both pins 2 and 4 are suitable grounds For more detailed information please consult the manual sect 4 3 lasers are supplied with an appropriately jumpered shorting plug installed However if this is removed for instance to attach a customer wired DB9 connector it is essential that pin 3 be grounded for the laser to operate Lira INTERLOCK JUMPER os ee REMOTE KEYSWITCH JUMPER OEM version For those lasers supplied in OEM S version i e without a key
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14. efficient Since overall wall plug efficiency of these lasers is about 696 to 896 a considerable amount of heat removal must occur even at the 10W and 25W output power level The thermal transport design for cooling Series 48 lasers has been adapted to a wide variety of user applications and laser operating requirements 4 4 1 48 1 48 2 Cooling CAUTION Condensation and water damage can occur if cooling water temperature is below the dew point Heat load for the 48 1 laser is 200 watts maximum and 400 watts maximum for the 48 2 In all but very low duty cycle applications external cooling must be applied to the laser chassis this may take the form of either forced air or water cooling Air cooling is accomplished by placing four 4 69 inch fans at the side of the laser and directing air flow perpendicular to the laser cooling fins refer to Figure 4 2 This method will produce sufficient cooling when operating at any duty cycle including mode 100 duty cycle Minimum delivery requirements for air cooling are 500 cubic feet per minute CFM of free air for the 48 1 2 fans 250 per fan and 1000 for the 48 2 4 fans 250 per fan Consult the factory for optimum design EP Figure 4 2 48 2 25W Cooling Fan Placement Series 48 Lasers 25 Operation and Service Manual Ch 4 Interface Requirements When u
15. A CAUTION notation is used to identify a process or procedure that could result in damage to the laser if not properly performed 1 6 General Hazards WARNING Always wear eye protection around an exposed laser beam Direct or diffuse laser radiation can inflict corneal injuries Select protective eyewear that blocks 10 6 uum laser radiation Eyewear protects against scattered energy and is not intended to protect against direct viewing of the beam or reflections from metallic surfaces Protective eyewear for 10 6 um laser radiation is available from SYNRAD Inc Enclose the beam path whenever possible Direct or diffuse laser radiation can seriously burn human or animal tissue Refer to and follow the laser safety precautions in ANSI Z136 1 1993 American National Standard for Safe Use of Lasers Procedures listed under the Standard include appointment of a Laser Safety Officer operation of the product in an area of limited access by trained personnel servicing of equipment only by trained and authorized personnel and posting of signs warning of the potential hazards 6 Series 48 Laser Operation and Service Manual Ch 1 Safety and Regulatory Compliance WARNING Processing of materials can generate air contaminants such as vapors fumes and or particles that may be noxious toxic or even fatal Material Safety Data Sheets MSDS for materials being processed should be thoroughly evaluated and the adequacy of pr
16. Lase LED connection to LED or LED input opto isolator See indicator note 1 Current and voltage limited output for direct Allows user to connect a remote Ready connection to LED or LED input opto isolator See LED indicator note 1 1 Pins 1 5 8 and 9 can be directly connected to the anodes of LEDs or LED input opto isolators without external current limiting devices Connect LED cathodes to pin 2 or 4 Current is limited internally to 20 mA 3 3V max 2 Connecting an LED to pins 6 or 7 to indicate keyswitch status requires an appropriate external current limiting resistor 3 The remote keyswitch output pin is not current limited or fused 4 Dry circuit external switches are recommended since current into the debounced remote keyswitch input pin is negligible 5 Allen Bradley compatible outputs pins 1 and 5 are Active Low Specifications OFF 15 VDC 5mA into 3KQ ON lt 1 VDC sinking 100mA 24 Series 48 Lasers Operation and Service Manual Ch 4 Interface Requirements 4 4 Cooling Requirements Series 48 electronics are mounted opposite the laser tube in the smaller section of the H bay and share the same cooling removal as the plasma tube Typical efficiency of laser plasma tubes operating in a TEMoo mode is 10 to 1296 radiation out to RF power in Conversion efficiency of DC electrical power to RF is about 6096 Off the shelf AC to DC switch mode supplies are typically 85
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18. 008 894 5 215 864 CAUTION These RF Excited Lasers must be provided with a pre ionizing Tickle signal during standby or laser low periods This is automatically provided with Synrad s UC1000 power controller This signal keeps the plasma ionized during laser low periods and facilitates breakdown and pulse to pulse fidelity Damage or malfunction may occur if this or equivalent drive signals are not used See manual KYSWITCH ERSION This laser manufactured by Synrad Inc Mukilteo WA 98275 at the date of manufacture complies with 21 CFR subchapter J OEM ERSION This laser manufactured by Synrad Inc Mukilteo WA 98275 J at the date of manufacture does not comply with 21 CFR subchapter 48 5 Label Location Diagram 27 and others for tickle pulse specifications or contact factory OP KEW i gt P cy ET US CONDENSATION AND MANEACTEE DATE WATER DAMAGE CAN 6500 Harbour Heights Pkwy OCCUR IF COOLING WATER M killao WA 98275 IS BELOW DEW POINT SEE OPERATION MANUAL BTTOM EW MADE IN U S A Series 48 L
19. 10HM d S080 5 286 VM Ooy NW NI G4SOTOSIC HO aasn v 4 6 Amd 9 0059 OL Ls p D SI SIHL QNO 9080 pesuAs E 8 2 S080 TOLHS 5 8 dun idvo u3Hol3uLs 3e1nd 5080 5080 NOMSAM A9 cG SXIN ud YNNA 5 YNISLYIH Y NO 3HY SO ed 6 ESN zl LE YHAHLO NO LNIOd LOANNOO H3MOd IVNOIS 78 4 4 N d 1105 HV38 OL TIVINS OOL SLYVd NSAID 3HV 3 09 Z or vau S080 HO Sad LELZLO9LOId cau s M69 L _ 9 2 S080 S080 Va O9INOSVNVd 3 lddlH Z MOI 9901 HH000Z SdVO OYLOATA 9 amp 288 ANI OSH 1 ser 922 A SONVH3 TOL 9602 NSA HO NSW NSZ Sg E SOIINVH3O 2215 9080 75 Med 5 S080 019 9cH ISXIN SONVH3 10L 04 ZYX 001 2200 8 09 1 SOIINVH3O 2218 9021 7 s NDFID LOSO boot seri 3SIMH3H LO 1 SSq3 TNn OGAM 44 NI 3HY SHOLIOVdVO z ONIY 2 5 TIVM 2152 MSZ L 902L 001 5080 SONIIVH H3MOd HOLSIS ues 1NO 4 1 S3OV ld 3JHYH1 9 S3OV ld OML OL N3AI9 SHOLSI on 2 5 Na1nHs 8000 dla QNVW
20. 20 4 1 DB9 Juniper ooh eI dist e das tdeo Ra 24 4 2 48 5 25W Cooling Fan Placement 25 4 3 48 1 48 2 Laser Cooling Kit oe poene 26 44 48 5Laser Cooling dee e s edet seee 27 5 1 Typical System Interconnection Diagram 32 Appendix A 48 1 Label Location Diagram eese siepe s aes A 42 48 2 Label Location Diagt thi e EVER A 43 48 5 Label Location Diagram RO Dou i GONE A a 44 48 1 Outline Mounting 45 48 2 Outline Mounting 46 48 5 Outline Mounting 47 Interconnect Schematic Model 48 Series Lasers 48 Schematic J Series Control Board A 49 Appendix B UC 1000 Front Rear Panels ih teer B 1 Series 48 Lasers iii Operation and Service Manual 11 1 2 2 1 41 7 1 List of Tables Series to o 2 B uropean Unioiin Directives PG wees 4 Series 48 Spec
21. 20Amp 48 5 20 Amp 2 Req d 3 1 6 DB Connector The DB connector is 9 pin female subminiature D connector that provides for inter connection of message fault shutdown remote interlock remote keyswitch and interface signals Refer to Chapter 4 for detailed information on the use of the DB9 connector 3 1 7 Command Input The CTRL connector is a BNC style jack that accepts the Command input control signal The output of the UC 1000 Controller is attached to this connector For pure CW operation a steady 5V signal can be applied through this connector This input is optically isolated from the chassis and power supply ground circuit but must not be subjected to common mode voltages greater than 50V from chassis ground The 48 5 laser has two Command inputs CTRL1 and CTRL2 that should always be driven identically from the Controller by using or BNC connector 3 1 8 DC Power Cables The red and black DC power input cables provide 30 VDC operating power to the laser Standard length is 60 inches 3 1 9 Auxiliary Power The Auxiliary Power connector is installed in the side panel of the laser housing and provides an optional 30 VDC 350 mA source for powering the UC 1000 Controller An auto resetting solid state fuse limits line current Connector power is active after 30 VDC is applied to the laser The UC 1000 can also be powered from its 115 VAC wall transformer 3 1 10 Laser Exit Aperture The las
22. 3 Install bisected Ferrite on the laser s DC power cables locate them as close as possible to the laser housing Caution to the User The Federal Communications Commission warns the user that changes or modifications of the unit not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment Series 48 Lasers 3 Operation and Service Manual Ch 1 Safety and Regulatory Compliance 1 2 2 European Union EU Requirements The European Norm EN document EN60825 1 was developed to protect persons from laser radiation by imposing requirements upon manufacturers of laser products to provide an indication of laser radiation to classify laser products according to the degree of hazard to require both user and manufacturer to establish procedures so that proper precautions are adopted to ensure adequate warning of the hazards associated with accessible radiation through signs labels and instructions to improve control of laser radiation through protective features and to provide safe usage of laser products by specifying user control measures The European Union s Electromagnetic Compliance EMC directive 89 336 EEC is the sole directive developed to address EMI issues in electronic equipment In particular the directive calls out European Norm EN documents that define the emission and immunity standards for specific product categories For Series 48 lasers the standard EN55011 define
23. 53 Series 48 Laser Operation and Service Manual 18 Figure2 8 RF Driver IV Ch 3 Physical Features Chapter 3 Physical Features The physical features of the Series 48 lasers are shown in Figure 3 1 48 1 and 2 and Figure 3 2 48 5 and described in the following paragraphs 3 1 Controls and Indicators 3 1 1 Shutter Switch The shutter switch is a mechanical shutter that closes the laser aperture The shutter also actuates independent micro switches that interrupt power to the laser section s The shutter should not be used to partially block the beam or to control output power The shutter is standard on keyswitch versions and can be ordered if necessary for OEM versions LASER EN SHUTER POWER ON LASE LED APERTHE SWITCH LED 6 a o o p SYNRAD T DIODE D SYNRAD 4 A Z 5 SY E 49 FRONT IE REAR IE DIODE POINTER COMMAND INPU KYSWITCH FBE POWER CONNECTOR DB CONNECTOR DC POWER CABES AMLIARY POWER SIDE IE Figure 3 1 48 1 48 2 Physical Features Location Diagram Series 48 Lasers 19 Operation and Service Manual Ch 3 Physical Features LASER EN SHUTER POWER ON LASE LED ON SWITCH LED ADI al ISYNRAD W Z Daa NA M SEMTTE PROM THS CAR N DIOXDE LASER C oM OQ cms P O O FRONT
24. AOO 2105 9 V AAA 441 HD3 008XVW 3xu di dA OvSS3W 9080 S310H ONILNNOW ind il p vLOHYZ 815 AVS ELN aye ae 5 AVS ZHWOO t S080 S080 902 uf mm S E z d 2x EL a S080 Od HX 22 08 1 0 LEH 154 T vLOHPZ 9080 902 214 59 or T 60 1 ovn 09 1 1 VNVONNO 619 4 91H 89 Ley 20 8 ILON li b s 9 j YNYNMd 9 6 S080 4 91055 E S080 S080 S080 Ras Es 49 S080 9 22 ys 619 619 619 arn 0 444 62105 68105 OS HZX Od SSxog gt 4 9972925101 2152 9021 08 37135 SHASH ed 2 001 2200 15 zLdOS 29 K K K s 9 2 8 ora MC 900 eon 902 amoi S080 571105 vv B810 AA A 11 2192 ans OL VIAS9 22105 2192 2192 ei 9255 458 sa sp 20 902 eu ely K ie RE S080 S080 A Quevz lt 8295 2 9 LE ly No 9d 9021 105 v4 4 99 8256 S080 LAHZLEWI THA s 2 S080 S080 S080 VNVMOd gly 628 IDEE 5 469 1
25. AX and verify that the intensity of the red LASE LED on the laser increases as the UC 1000 output is increased 12 While the UC 1000 is set for maximum power output measure laser output using a laser power meter such as S YNRAD s PW 250 Power Wizard to verify that the output is consistent with the power rating for your respective laser model refer to Table 2 1 for power specifications 13 Reduce power output to minimum then turn off laser power set keyswitch to OFF or open remote keyswitch circuit as appropriate 14 Set the mechanical shutter and UC 1000 power switch to OFF Turn off external DC power supply 6 3 Operation in Pulsed Mode In applications such as marking and cutting the laser is required to pulse on and off in synchronization with an external pulsing control signal typically from a computer or function generator operating in the range from 0 to 1 KHz To operate the laser in pulsed mode perform the following procedure 1 Perform Section 6 2 Steps 1 through 6 2 Set the UC 1000 mode switch to MAN manual mode 3 Adjust the UC 1000 front panel POWER ADJ control to the desired power level If a duty cycle of 100 is required consult factory for modification instructions 4 Connect the pulsing control signal to the GATE input connector on the rear panel of the UC 1000 5 Set the mechanical shutter on the laser to the ON open position 6 Turn the laser s keyswitch to ON and or close the remote keysw
26. C 1000 Controller has been designed to provide control of the laser from a remote source The UC 1000 requires 24 32 VDC 200mA from its supplied wall plug transformer rectifier or can be connected to the Auxiliary Power connector on the side panel of the laser via the power cable provided with the UC 1000 Refer to Appendix B for more information on the UC 1000 Controller 4 2 DC Power Supply 4 2 1 48 1 48 2 Model SYNRAD power supplies models DC 1 and DC 2 are sized to power 48 1 and 48 2 lasers respectively If substituting power supplies use a well regulated DC power supply in the range of 30 to 32V with no more than 3V overshoot under a 10 9096 modulation load Laser current is under 7 A for the 48 1 and 14A for the 48 2 The use of short leads is recommended Please note that SYNRAD lasers are built and tested to meet published specifications at an input voltage of 30 VDC 4 2 2 48 5 Model The SYNRAD model DC 5 power supply is used to power the 48 5 laser If substituting use a well regulated DC power supply in the range of 30 to 32V with no more than 3V overshoot under a 10 9096 modulation load The use of short leads is recommended and use of appropriate terminations rated for currents up to 28 A is recommended Please note that SYNRAD lasers are built and tested to meet published specifications at an input voltage of 30 VDC 4 3 DB9 Connector 48 Series lasers are equipped with a female DB9 connector mounted to the sidewal
27. IE IE N DIODE POINTER COMMAND INPUS KYSWITCH POWER CONNECTOR DB CONNECTOR AMIARY POWER DC POWER CABES SIDE IE Figure 3 2 48 5 Physical Features Location Diagram 3 1 2 Power On LED The POWER LED is a panel mounted LED that illuminates green when the keyswitch is turned to the ON position which indicates that power is applied to internal circuitry This LED is standard on both OEM and keyswitch versions 3 1 3 Lase LED The LASE LED is a panel mounted LED that illuminates red to indicate the Lase mode of operation If a Command signal is present the red LED turns on after the 5 second delay and becomes brighter as the Command duty cycle is increased This LED is standard on both OEM and keyswitch versions 3 1 4 Keyswitch The panel mounted keyswitch is used to turn the laser on off and to reset faults The key cannot be removed when the keyswitch is in the ON position For OEM lasers a plug is installed in place of the keyswitch and the keyswitch wires are shorted The remote keyswitch pins of the DB9 connector then become the external power on off control means 20 Series 48 Lasers Operation and Service Manual Ch 3 Physical Features 3 1 5 Fuse The panel mounted fuse s provides overcurrent protection for the internal circuitry of the laser The required fuse is a fast blow type AGC 3AG rated at 32V minimum with the following current ratings 48 1 10 Amp 48 2
28. N FITTIN OTION UANTITIES OF OT FITTIN TYES ARE SI ED IT LASER SEE NOTE Figure 4 3 48 1 48 2 Laser Cooling Kit 26 Series 48 Lasers Operation and Service Manual Ch 4 Interface Requirements 4 4 2 48 5 Cooling The 48 5 heat load is 800 watts maximum and requires water cooling to prevent damage to the laser Cooling water between 18 and 20 C maximum at a minimum flow rate of 1 5 GPM must be used Inlet cooling water temperature should always be maintained above the dew point to avoid condensation and water damage to the laser Heat removal from the cooling water is required and can be accomplished using a chiller The cooling water intake is through the lower side mounted tubes plus one central tube located on the rear plate of the laser Exit is from the two top tubes and one of the central tubes also on the rear plate The front central tubes are jumpered using a U fitting while the front side and top are also jumpered at each side using two right angle fittings refer to Figure 4 4 A cooling intake and outlet manifold using a quick disconnect fitting system is shipped as a kit with the laser The quick disconnect fittings can be removed from the tubing by compressing the front ring of the fitting against the body of the fitting The cooling kit also includes quantities of both straight and elbow fittings Other fittings can be ordered from local fitting supply houses 277 20 S ANS 4 REAR LATE d E IN SS
29. Service to obtain an Return Authorization Number RA In the U S call 1 800 SYNRADI outside the United States dial 425 349 3500 or fax your request to 425 485 4882 40 Series 48 Lasers Operation and Service Manual Appendix A Supporting Documentation Appendix A Supporting Documentation List of Supporting Documentation Figure Table Title Page 45 1 Label Location Diagram iu mier ose Fede etae eR PN Erg OA ve A 42 48 2 Label Location de pe n uia ovals vos ala A 43 25 5 Label Location Co BIBT EE 44 48 1 Outime Mounting heaton 45 48 2 Outline Mounting 1 eene A 46 48 5 Outline Mounting DISEEAE aee SERO A NC ERE A 47 Interconnect Schematic Model 48 Series 48 Schematic J Series Control A 49 Series 48 Lasers 41 Operation and Service Manual CAUTION These RF Excited Lasers must be provided with a pre ionizing Tickle signal during standby or laser low periods This is automatically provided with Synrad s UC1000 power controller This signal keeps the plasma ionized during laser low periods and facilitates breakdown and pulse
30. ant connections to the laser as described in Section 4 4 1 2 Connect the red power cable to positive terminal on DC power supply Connect the black power cable to the negative terminal on the DC power supply Note If using a SYNRAD DC 1 or DC 2 Power Supply verify that the input power jumpers are properly configured The DC 1 is preset for 110 VAC input power Refer to the power supply documentation to configure the input voltage for 220 VAC The default input voltage for the DC 2 Power Supply is 230 VAC You must jumper terminals 1 and 2 on the input power terminal strip for 115 VAC input Refer to the documentation provided with the power supply for additional wiring information 3 Make interconnections between your electronic control equipment and the laser s DB9 connector as required 4 Attach the UC 1000 Controller s power cable between the UC 1000 s PWR 24 VDC jack and the laser s Auxiliary Power connector The UC 1000 can also be powered from a wall plug by using the supplied wall plug transformer 5 Attach the BNC control cable between the UC 1000 s OUTPUT connector and the laser s CTRL connector 6 If your application uses external gating signals to command on off switching of the laser attach a BNC cable between your Gate signal source such as a computer or PLC and the UC 1000 s GATE connector 7 If your application uses external analog voltage or current signals to control PWM attach a BNC cable bet
31. asers Operation and Service Manual Documentation Appendix Supportin Q310N 55 S30NVH3 101 NOS LON SNI4 NI 1002 S1 113 113 u3sv11HO nS 4309 S310 30 138 01 53895 4309 WOLLO OL 3SN LON OG 5 SNOISN3NIQ 11V o Of s43 WN a1vaowagu nul COH 10 45 48 1 Outline Mounting Diagram Operation and Service Manual Series 48 Lasers Documentation Appendix Supportin 0310 SS31Nf S3ONVH3 101 NOS LON SNIJ NI 1009 361 11 3 Lid H3SV 180 ns 01 59925 302 40110 OL 3SN LON OG NI 3HY SNOISNANWIG 11 SALON avaui 14309 S310 30 138 OTI T E SZ D 5 suaWn 31V30lN3a3d Series 48 Lasers Operation and Service Manual B S OL IL 8 48 2 Outline Mounting Diagram 79
32. d to the RF Driver The PWM control circuit provides on off gating of the PWM switch unless disabled by the 5 second delay shutter switch or the fault shutdown circuits The 5 second delay disables PWM output to the RF amplifier for a period of 5 0 5 0 0 seconds after the panel mounted keyswitch and remote keyswitch link are closed power ON The 5 second delay is defeated for OEM customers who must provide this required safety feature elsewhere as part of their equipment integration Please contact SYNRAD for details The shutter switch allows the operator to temporarily interrupt laser output during active lase modes A mechanical lever physically blocks the exit aperture and at the same time actuates independent micro switches that electrically interrupt power to the RF module by disabling the PWM input opto isolator forcing an off state Series 48 Laser 15 Operation and Service Manual Ch 2 Theory of Operation 2 5 2 Fault Shutdown Conditions The power input circuit consists of a panel mounted fuse for overcurrent protection a dual Schottky shunt rectifier for reverse voltage protection a panel mounted keyswitch and a normally open MOSFET safety switch Application of reverse voltage will normally require fuse replacement The output of the keyswitch is connected to the control board through the DB9 user port Note that the supplied DB9 jumper plug can be removed to allow the user to insert a remotely located relay or switch
33. e or under voltage condition The active low signal transitions from 15 to when fault occurs See notes 1 5 SIGNAL Signal ground for pins 1 3 5 8 and 9 CHASSIS GROUND REMOTE Disables the laser when opened by a remote door or Allows an open external interlock switch to INTERLOCK housing safety interlock As shipped pins 3 and 4 shut down the laser INPUT are jumpered to disable the remote interlock function allowing the laser to function normally SIGNAL Signal ground for pins 1 3 5 8 and 9 CHASSIS GROUND MESSAGE A B compatible output goes low when laser tube Provides user with a pre shutdown OUTPUT temperature reaches 54 C 2 C and remains low temperature warning Does not shut down until temperature falls 2 C See notes 1 5 the laser REMOTE For connecting a remote relay or switch in series Allows user to control laser on off reset KEYSWITCH with the laser keyswitch As shipped pins 6 and 7 from a remote location Connect to pin 7 to INPUT are jumpered to disable the remote keyswitch run open to stop and or reset faults function allowing laser to function normally using the keyswitch for on off control See notes 2 4 REMOTE See pin 6 description above Pin is at DC line Allows user to control laser on off reset KEYSWITCH potential when the keyswitch is on or bypassed See functions from a remote location OUTPUT notes 2 3 Current and voltage limited output for direct Allows user to connect a remote
34. ed beam at 50 watts The 50W unit uses two control boards and four RF drivers The control boards are tied together electronically so that if a failure mode shuts down either board both laser tubes are turned off The control boards are equipped with individual fuses for each RF driver PWM output In the event of an RF driver failure only that fuse will open allowing other RF drivers in the system to continue operating Unless both fuses are open on a given control board no shutdown will occur nor is there a fault output signal In general the two Command inputs of a 50W Duo Lase unit CTRL1 and CTRL2 should always be driven identically with a or connector For special applications such as redundant or ultra wide dynamic range systems it is permissible to drive only one Command input Under this condition however the random polarization beam quality will be compromised The optical combining technique is based on the fact that each laser is linearly polarized allowing the use of a polarization sensitive beam combiner to achieve 98 efficiency in combining the two beams The two components of the resulting beam are spatially parallel and collinear Combining the output of two lasers reduces the normal temporal and spatial variations of a single laser Output polarization is random and therefore superior for many cutting applications Series 48 Laser 17 Operation and Service Manual Ch 2 Theory of Operation
35. er aperture is the opening from which the laser beam is emitted when lasing The beam shape is square at the laser output aperture changing to circular at distances of approximately meter or more from the laser The laser beam diverges due to diffraction at a full angle of 4 milliradians with the beam waist at the output aperture of the laser 3 111 Diode Pointer Power Connector This connector is a regulated 5 VDC output capable of providing 100 mA for the optional Diode Pointer available from SYNRAD The output is internally protected against short circuits by an auto resetting solid state fuse 3 1 12 Mounting of Optical Accessories The front faceplates of Series 48 lasers are designed with a 6 hole mounting pattern refer to the Outline Mounting diagrams in Appendix A to provide a convenient method for mounting standard beam delivery components available from SYNRAD When considering other components not specifically designed as Series 48 options please consult the factory for restrictions since excessive weight may cause damage to the laser Series 48 Lasers 21 Operation and Service Manual Ch 3 Physical Features 22 Series 48 Lasers Operation and Service Manual Ch 4 Interface Requirements Chapter 4 Interface Requirements 4 1 UC 1000 Universal Laser Controller Operation of Series 48 lasers requires an external controller that can provide the necessary Command input drive signal as the modulation source The SYNRAD U
36. evices and Radiological Health CDRH reports pertaining to the radiation safety of the product and the associated quality control program Failure to provide the required reports or product certification is a violation of Section 360B of the Radiation Control for Health and Safety Act of 1968 Product features incorporated into the design of Series 48 lasers to comply with CDRH safety requirements are integrated as panel controls or indicators internal circuit elements or input output signal interfaces terminated at a DB9 connector installed on the side panel of the laser Specifically these features include a keyswitch keyswitch version remote interlock a laser aperture shutter fault output signals to indicate failure of internal electronics control board or RF driver or an actual or impending overtemperature condition and a 5 second delay between keyswitch actuation and lasing Incorporation of certain features is dependent on the version OEM or keyswitch product features are summarized in Table 1 1 The table indicates the laser version on which a feature is available the type and description of the feature and if the feature is required by and complies with CDRH regulations In addition to the safety features described above common safe operating practices should be exercised at all times when actively lasing Follow all safety precautions specified throughout this manual to prevent exposure to direct or scattered laser
37. f the tube reaches 60 C 2 Power down sequence keyswitch reset or remote keyswitch reset is required to restore operation PWM Failure Circuit element Disables laser if output power exceeds the Protection Keyswitch Command input by 20 or more due to electronics failure Power down sequence keyswitch reset or remote keyswitch reset is required to restore operation Fault Signal OEM Signal output Latches to a logic low state to indicate a fault Keyswitch shutdown has occurred Message Signal OEM Signal output Pre shutdown temperature warning latches to a Keyswitch logic low state when tube temperature reaches 54 C 2 Warning Labels OEM Labels Attached to various external locations of the laser Yes Keyswitch housing to warn personnel of potential hazards 1 On versions no keyswitch the Power indicator illuminates and the five second delay begins when DC power is applied to the laser 2 Series 48 Laser Operation and Service Manual Ch 1 Safety and Regulatory Compliance 1 2 EMI and Safety Compliance Series 48 lasers are designed to comply with certain Federal Communications Commission FCC and European Union EU directives that impose product performance requirements relating to electromagnetic compatibility EMC and product safety characteristics for industrial scientific and medical ISM equipment The associated directives and specific provisions to which compliance is mandatory for Ser
38. h as a computer or PLC and the UC 1000 s GATE connector 7 If your application uses external analog voltage or current signals to control PWM attach a BNC cable between your analog voltage or current source typically a computer or PLC and the UC 1000 s ANV C connector Series 48 Lasers 31 Operation and Service Manual Ch 5 Unpacking and Setu COMPUER W ITH D A CARD oc I o oz lt 2 Q Ed N oz YN 2 VA 7 o0 2 4 9 7 os SYNRAD SERIES 48 LASER FIREBICK BAM BOCK Figure 5 1 Typical System Interconnection Diagram 32 Series 48 Lasers Operation and Service Manual Ch 6 Operating Instructions Chapter 6 Operating Instructions 6 1 General The operating instructions provided in this section are based on the use of a SYNRAD UC 1000 Universal Laser Controller If using an alternate method of laser control please consult the factory for information regarding key aspects of laser operation 6 2 Turn On Check Out CAUTION These Excited Lasers must be provided with a pre ionizing Tickle signal during standby or laser low periods This is automatically provided with SYNRAD s UC 1000 Power Controller This signal keeps the plasma ionized during laser low periods and facilitates breakdown and pulse to pulse fidelity Damage or malfunction may occur if this o
39. ies 48 lasers are identified and described in Section 1 2 1 and Section 1 2 2 1 2 1 Federal Communications Commission FCC Requirements The United States Communication Act of 1934 vested the Federal Communications Commission FCC with the authority to regulate ISM equipment that emits electromagnetic radiation in the radio frequency spectrum The purpose of this regulation is to prevent harmful electromagnetic interference from affecting authorized radio communication services in the frequency range above 9 kHz The FCC regulations that govern ISM equipment are fully described in the Code of Federal Regulations CFR 47 Part 18 Series 48 lasers have been tested and found to comply with 47 CFR Part 18 by demonstrating performance characteristics that have met or exceeded the requirements Information to the User The following information is provided to comply with the requirements of 47 CFR Part 18 Section 213 Interference Potential In our testing S YNRAD Inc has not discovered any significant electrical interference traceable to Series 48 lasers Measures to Correct Interference If you suspect your Series 48 laser interferes with other equipment take the following steps to minimize this interference 1 Route the laser s DC power cables away from signal cables connected to the equipment that is experiencing interference problems 2 Use shielded cables to and from the equipment that is experiencing interference problems
40. ification Table 2 2 esee 9 DB9 Connector Pm Assigbmehls eos c is es Sens 24 Series 48 Troubleshooting Table sse 37 iv Series 48 Laser Operation and Service Manual Introduction Thank you for purchasing a Series 48 laser from SYNRAD Inc The Series 48 family of lasers incorporates the latest developments in sealed carbon dioxide devices combining the best features of both waveguide and free space CO laser technology in an innovative aluminum tube design J Series lasers utilize state of the art surface mount electronics newly patented RF excitation technology and fully CE compliant systems for EMI containment heat removal and laser safety In the 10 50W range of continuous optical output these lasers represent an ideal balance between proven mature laser tube technology and reliable simplified electronic control information necessary to safely operate and maintain the laser is provided in this manual The information is organized in several chapters and is arranged as follows Chapter 1 Safety and Regulatory Compliance Chapter 2 Theory of Operation Chapter 3 Physical Features Chapter 4 Interface Requirements Chapter 5 Unpacking and Setup Chapter 6 Operating Instructions Chapter 7 Maintenance and Troubleshooting Chapter 8 Return for Factory Service In addition to the information contained in the chapters described above
41. in power draw and heat load 10 Series 48 Laser Operation and Service Manual Ch 2 Theory of Operation 2 3 Description of Physical Operation The laser consists of an RF excited plasma tube with an adjustable mirror on each end mounted together with the RF drive assembly in a single aluminum chassis Refer to Figure 2 2 for a schematic depicting the physical components of the laser RF FEED THROGH AND GAS FILL PORT COIL IN RF RESONATOR LASER PLASMA ANODIZED 7 2 ALMINM GAS ALMINM BLLAST HOBING GROND RF ELECTRODES SPACERS SMALL GAPS Figure 2 2 Physical Schematic 2 3 1 Plasma Section The plasma tube is made of 2 inch square cross section extruded aluminum tubing with pre machined ends welded on The mechanical and electrical arrangement of the internal electrode structure U S Patent 4 805 182 and others is shown schematically in Figure 2 2 The RF drive power is applied between the lower electrode and the plasma tube The internal resonant circuit induces RF drive on the upper electrode that is 180 degrees out of phase with that of the lower electrode Thus the voltage between the two RF electrodes is roughly twice that on either electrode causing the plasma to form only in the 4 8 mm square bore region The two sidewalls confine the plasma but carry negligible current The RF electrodes are anodized to assure uniform distribution of RF power throughout the excitation vol
42. in series with the keyswitch If the keyswitch is left on or is electrically bypassed the user can turn the laser on and off and reset fault shutdowns from a remote location The temperature warning message output pin 5 of the DB9 connector goes low when the laser tube temperature reaches 54 C 2 and remains low until tube temperature falls 2 C below the trigger temperature The warning message output does not shut down the laser Overtemperature fault shutdown occurs when laser tube temperature reaches 60 C 2 Control board operation begins when the supply voltage rises above 18 VDC and remains below 36 VDC After startup the control board will shut the laser down if supply voltage falls below 15 VDC or rises above 36 VDC If an electronics failure causes the control board to output PWM power to the RF Drivers in excess of 2096 of the commanded PWM input a fault shutdown will occur To reset after any fault shutdown correct the problem s then cycle the keyswitch or remote keyswitch if one is present or remove power to the laser for 30 seconds During any fault shutdown the fault shutdown output pin 1 of the DB9 connector will latch to low state until a keyswitch reset occurs 2 5 3 Power On Reset The Power On Reset feature will not allow lasing to restart after a power failure or shutdown has occurred until the keyswitch or remote keyswitch is first cycled off open circuit condition and then back on closed circu
43. is Verify that the UC 1000 Controller or equivalent has tickle intermittent in response pulses of proper duration Refer to Section 2 4 1 to input pulses Series 48 Lasers 37 Operation and Service Manual Ch 7 Maintenance and Troubleshooting 38 Series 48 Lasers Operation and Service Manual Ch 8 Return for Factory Service Chapter 8 Return for Factory Service In the event your Series 48 Laser requires return for factory service SYNRAD must be contacted prior to shipment of the laser for a Return Authorization RA number The Return Authorization number must be included on all shipping documentation included with the returned laser The following information is required by SYNRAD to issue a Return Authorization number Name of company Name and phone number of individual requesting return of the laser Model number Serial number Detailed description of the fault Return the laser in the original packing material and shipping container Write the Return Authorization number on the outside of the shipping container Series 48 Lasers 39 Operation and Service Manual Ch 8 Return for Factory Service SERVICE REQUEST Company Name Contact Name Company Address Telephone Fax Date originally received Date returned Serial Describe reason for repair Should you need to return a laser for repair please contact SYNRAD Customer
44. it Power On Reset is defeated via an internal DIP switch on all OEM no keyswitch versions OEM customers must provide this required safety feature elsewhere as part of their equipment integration 2 5 4 RF Driver IV RF power is provided by a patented 5 602 865 single MOSFET transistor power oscillator operating in a tuned feedback circuit The low impedance MOSFET output is coupled to the relatively high impedance laser tube electrode by a ceramic substrate micro strip transmission line integral to the RF Driver circuit board RF rise time is about 1 us to deliver a striking voltage of over 500V peak to the discharge electrodes A pulse stretching network on the control board widens the incoming Command input so that the tickle pulses delivered from the RF Driver are sufficient to provide a plasma ready state without emission The RF drive is not centered on a frequency authorized for significant incidental radiation ISM bands around 27 and 40 MHz The power module must therefore be shielded effectively which is accomplished by integrating the plasma tube and drive into a single assembly Refer to Figure 2 8 for the circuit schematic 16 Series 48 Laser Operation and Service Manual Ch 2 Theory of Operation 2 6 Duo Lase Operation 48 5 The 48 5 laser combines two laser tubes for twice the output of a standard laser The output beams from two 25 watt sealed tubes are combined optically to provide a single diffraction limit
45. itch Verify that the green POWER LED on the Laser Head illuminates 7 Verify that the red LASE LED on the laser illuminates dimly after approximately 5 seconds This indicates tickle pulses are being applied to the laser 8 The laser system is now configured to operate in the pulsed mode When the Gate input pulses high gt 3 5 VDC the UC 1000 will turn on the laser at a power level corresponding to the UC 1000 POWER switch setting When the Gate input goes low 0 5 VDC the UC 1000 terminates lasing and reverts to standby mode tickle pulse only 34 Series 48 Lasers Operation and Service Manual Ch 6 Operating Instructions 6 4 Operation in Continuous Wave CW Mode In some applications such as high speed marking the finite turn off time of the laser due to modulation causes a series of dots that may be visible on the marking surface instead of a clean line Operating the laser in CW mode will prevent this from occurring however there will be a slight decrease in laser efficiency when the duty cycle is increased beyond 95 refer to Figure 2 1 To operate the laser in mode a constant 5 VDC signal can be connected to the Command input of the laser This constant source will force the internal switching electronics to remain on providing continuous and uninterrupted laser output power Note that in CW mode laser power output cannot be adjusted using the UC 1000 If laser power needs to be adjusted refe
46. l of the laser It provides the user with a convenient method for monitoring fault conditions over temperature control RF circuitry failure and adds remote interlock remote keyswitch relay or switch message output and remote LED indicator capability DB9 pin assignments and functions are described in Table 4 1 As shipped the laser will have a DB9 male jumper plug installed in the panel mounted DB9 to allow normal operation of the laser The DB9 jumper plug has a plastic cap that covers the internal pins Two shorting jumpers see Figure 4 1 are installed One between pins 6 and 7 to close the remote keyswitch function and one between pins 3 and 4 to close the remote interlock To take advantage of DB9 functions you must manufacture a connecting cable and configure the connections for proper operation A spare DB9 male connector and cover is included with each laser to facilitate easy cable manufacture Series 48 Lasers 23 Operation and Service Manual Ch 4 Interface Requirements REMOTE INTERLOCK JMPER 2 3K 4 O 6_ 75 84 9 pe KYSWITCH JMPER REMOTE Figure 4 1 DB9 Jumper Plug Table 4 1 DB9 Connector Pin Assignments PIN SIGNAL NAME DESCRIPTION PURPOSE Allen Bradley A B compatible output indicates Provides user with control signal to disable SHUTDOWN failure of internal control RF circuitry or existence external systems in the event of a fault of an overtemperature gt 60 C 2 C overvoltag
47. max frequency High On 3 5V min 10V max Low Off 0 5V max min 6mA max load 5V 48 1 48 2 12mA max load 5V 48 5 Electrical Control Remote On Contact closure lt 100 Off Open Circuit gt 100 Keyswitch Link Contact Rating 50 VDC 2mA minimum dry circuit Electrical Control Remote Interlock On Contact closure lt 100 Off Open Circuit gt 100 Link Contact Rating 50 VDC 2mA minimum dry circuit Electrical Power Input 2 30 32 VDC 7 A max 30 32 VDC 14 A 30 32 VDC 28 A max Cooling Water 9 Heat Load Max Flow Rate Temperature Thermal Shutdown 60 C 2 C warning at 54 C 2 C Beam Exit Vertical Location 1 09 inches from top plate center 1 22 inches from top plate 9 Ib 4 1 kg 18 Ib 8 2 kg 44 Ib 20 kg Dimensions W x H x 109 Inches 2 8 3 9x 17 2 8 x 3 9 x 32 5 6 x 4 3 x 35 Millimeters 71 x 99 x 432 71 x 99 x 813 142 x 110 x 890 1 Output power level is guaranteed for 12 months regardless of operating hours 2 Minimum 30 VDC input voltage to obtain guaranteed output power 3 Lasers with output power 250W must be water cooled Lasers with output 50W can be either water or air cooled depending on their duty cycle For duty cycles gt 5096 water cooling is strongly recommended Note that water cooling improves power stability at any duty cycle 4 Inlet cooling water temperature should always be maintained above the dew point to avoid conden
48. ng edge of gated pulses please consult SYNRAD 2 5 Description of Electrical Operation Control of laser operation and power output levels is essentially performed using a single PCB The Control PCB connects the modulated signal to the RF amplifier It also provides electronics to monitor performance of RF control output circuitry input power temperature PWM accuracy provides outputs to an externally accessible connector and incorporates reverse polarity protection Functional differences between model types generally relate to the number of RF channels Model 48 1 operation uses a single RF electrode requiring a single modulated RF drive input from the Control PCB The 48 2 uses 2 RF electrodes and requires 2 RF channels while the 48 5 uses 4 electrodes and 4 RF channels 2 Control PCB s For the purpose of this description a single channel will be described Model specific details relating to differences in electrical characteristics will be individually discussed 2 5 1 PWM Control Circuitry The Command input modulation source signal must be provided externally to the laser and is connected to the panel mounted BNC connector labeled CTRL This signal is connected to an opto isolator the output of which is applied to the PWM switch control circuit The PWM switch control circuit gates the PWM switch off and on at the frequency and duty cycle controlled by the modulation source When the PWM switch closes a potential of 30 VDC is applie
49. ng modes are as follows Standby STBY In this mode only the 1 usec wide tickle pulse is generated This tickle signal causes the laser plasma to be ionized without resulting in beam emission providing quick response to user signals Series 48 Laser Operation and Service Manual Appendix UC 1000 Laser Controller Closed Loop Low Gain CLL Closed loop operation of the laser can provide better than 2 power stability This is achieved by splitting a portion of the outgoing laser power to a thermo pile detector The amplified signal is compared against a reference and regulates the output duty cycle pulse width The front panel POWER ADJ knob establishes the reference level Operation in the closed loop mode requires a factory installed 48 CL laser mounted power sensor Closed Loop High Gain CLH Same as CLL but with higher internal gain Remote Current Control ANC In this mode an analog 4 20 mA current is applied to the UC 1000 s ANV C input connector Laser power is zero at 4mA and maximum at 20mA The 4 20 mA current loop is the standard industrial control interface for allowing loop supervision Circuit input impedance is low Remote Voltage Control ANV In this mode a 0 10 VDC analog voltage signal controls laser output The laser s output power is zero at OV and maximum at 10V Circuit input impedance is high Manual MAN Laser power control is accomplished manually using the UC 1000 s POWER knob
50. ns of shipping damage Verify that all external labels are attached to the housing refer to Appendix A for label location diagrams Contact SYNRAD if the laser housing is damaged or if any of the required materials or labels are missing 3 2 Mounting The recommended mounting orientation for Series 48 lasers is horizontal If this cannot be accomplished the lasers may be mounted at an angle of 220 to the vertical Consult the factory for limitations if the laser is to be mounted in a vertical orientation The laser may be hard mounted to equipment by removing several of the bottom panel screws and replacing these with longer ones to secure the laser to optical assemblies Use a minimum of 4 screws Model 48 1 or 6 screws Model 48 2 48 5 in a symmetrical pattern to properly distribute mounting forces Do not remove the cover This mounting method is only recommended as long as the screws do not support the weight of the laser For a sturdier attachment the laser may be clamped to optical assemblies by applying clamping forces between top and bottom cover screws Do not apply clamping forces on the longitudinal centerline Refer to Appendix A Pages A5 A7 for the appropriate outline mounting diagram Series 48 Lasers 29 Operation and Service Manual Ch 5 Unpacking and Setup 5 3 System Interconnections 5 3 1 48 1 48 2 Interconnections Note Refer to Figure 5 1 for an illustration of a typical system interconnection 1 Make cool
51. oller This signal keeps the plasma ionized during laser low periods and facilitates breakdown and pulse to pulse fidelity Damage or malfunction may occur if this or equivalent drive signals are not used See manual for tickle pulse specifications or contact factory This laser product is manufactured under U S Patent 4 805 182 4 837 772 5 008 894 5 215 864 and others KEW AFP A a pee CAUTION POWER CONDENSATION AND DATE WATER DAMAGE CAN 6500 Harbour Heights Pkwy OCCUR IF COOLING WATER Mukilteo WA 98275 IS BELOW DEW POINT SEE OPERATION MANUAL BTTOM EW KYSWITCH ERSION This laser manufactured by Synrad Inc Mukilteo WA 98275 MADE IN USA complies with 21 CFR subchapter J ee at the date of manufacture OEM ERSION This laser manufactured by Synrad Inc Mukilteo WA 98275 does not comply with 21 CFR subchapter J at the date of manufacture 27 48 2 Label Location Diagram A 43 Series 48 Lasers Operation and Service Manual A 44 A endix Supporting Documentation This laser product is manufactured under U S Patent 4 805 182 4 837 772 5
52. or 190 us and low for 10 us it has a 95 duty cycle Refer to Figure 2 6 for waveforms Series 48 Laser 13 Operation and Service Manual Ch 2 Theory of Operation ON MEDIM POWER LEEL OUPU TO LASER FROM CONTROLLER CYCLE OFF t2008 GATED ON GATED OFF TICKE ONLY ON MAXPOWER LEEL OUPUTO LASER FROM CONTROLLER 95 UY CYCLE OFF t2008 GATED ON GATED OFF TICKE ONLY Figure 2 6 Typical 5 kHz Command Input Waveforms for Gated Operation Series 48 lasers are designed to operate at PWM Command input frequencies up to 20 kHz The choice of PWM frequency depends on the application For most applications the UC 1000 frequency of 5 kHz has proven to work well Since the laser output follows the PWM input with a rise and fall time constant of 100 us the laser output cannot precisely follow the Command input beyond PWM frequencies of 5 kHz with a duty cycle greater than 50 5 kHz 1 100 us x 50 Typically the depth of modulation at 50 duty cycle is 90 to 100 at 2 kHz and 60 to 80 at 5 kHz Refer to Figure 2 7 for waveforms For high speed motion applications that cannot tolerate any ripple in the optical beam response but still need adjustable power levels we recommend the use of PWM frequencies up to 20 kHz At 20 kHz the optical response no longer follows the Command input and is very nearly a DC value with just a small amount of ripple present
53. ovisions for fume extraction filtering and venting should be carefully considered Review the following references for further information on exposure criteria ANSI Z136 1 1993 American National Standard for Safe Use of Lasers Section 7 3 U S Government s Code of Federal Regulations 29 CFR 1910 Subpart Z Threshold Limit Values TLV s published by the American Conference of Governmental Industrial Hygienists ACGIH It may be necessary to consult with local governmental agencies regarding restrictions on venting of vapors CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure Series 48 Lasers 7 Operation and Service Manual Ch 1 Safety and Regulatory Compliance 8 Series 48 Laser Operation and Service Manual Ch 2 Theory of Operation Chapter 2 Theory of Operation 2 1 Technical Specifications Technical information regarding Series 48 performance characteristics is summarized in Table 2 1 Table 2 1 Series 48 Specification Table MODEL CHARACTERISTICS 48 5 Wavelength 10 57 to 10 63 microns Power Output Guaranteed O 10W 25W 50W Mode Quality TEMOO equivalent 95 purity Beam Diameter Divergence 3 5mm 4mR Modulation Rise or Fall Time 150us max 10 90 5 kHz PWM 20 amp 50 duty factor 1 kHz square wave gate Electrical Control Command Input Opto isolated LED input Positive logic 20 kHz
54. r equivalent drive signals are not used WARNING Harmful laser radiation is emitted through the laser exit aperture when performing the following procedure l Confirm the DB9 jumper configuration required for your application refer to Section 4 3 2 Verify that the external DC power supply UC 1000 laser keyswitch and laser shutter are all set to OFF 3 Verify that all electrical and cooling interconnections have been accomplished according to Section 5 3 Turn on the cooling system If using cooling water examine all connections for leaks Ensure that all personnel in the area are wearing protective eyewear Place a beam block in front of the exit aperture Apply power to the external DC power supply Set the UC 1000 mode switch to MAN manual mode Set the UC 1000 POWER ADJ control to MIN and set UC 1000 POWER switch to ON Verify the red power ON LED on the front panel of the UC 1000 illuminates Gb S MD ae 8 Set the mechanical shutter on the laser to the ON open position 9 Turn the laser s keyswitch to ON and or close the remote keyswitch Verify that the green POWER LED on the Laser Head illuminates 10 Verify that the red LASE LED on the laser illuminates dimly after approximately 5 seconds This indicates tickle pulses are being applied to the laser Series 48 Lasers 33 Operation and Service Manual Ch 6 Operating Instructions 11 Slowly rotate the UC 1000 POWER control towards M
55. r or more from the laser The laser beam diverges due to diffraction at an angle of 4 milliradians refer to Figure 2 3 The beam has a near gaussian profile in the far field 0 6m or more cm cm FOR LASER or cm FAMCAIS TDIA A cm FOR LASER A CE FULL ANLE RF DISCARE REION DIERENCE mrad crc METER RADIUS nSe FLAT e Si TOTAL REFLECTOR OUTUT COULER Figure 2 3 Beam Characteristics 2 4 Laser Power Control To effectively control output power of Series 48 lasers pulse width modulation PWM is used to vary the power on time of the internal RF amplifier stage s which controls the short term average RF drive applied to the laser electrodes The required modulation source signal refer to Figure 2 4 and the capabilities to control and vary that signal are provided by SYNRAD s UC 1000 Laser Controller Using an alternate method to control laser output power requires consideration of key characteristics of Series 48 lasers as described in the following paragraphs 0 1000 CONTROLLER OUPU TO LASER COMMAND INPU ON COMMAND INPU OFF Figure 2 4 Typical PWM Drive Signal 12 Series 48 Laser Operation and Service Manual Ch 2 Theory of Operation 2 4 1 Tickle Pulse Series 48 lasers require 1 us tickle pulse delivered at a 5 KHz clock frequency from the controller If the user is supplying on off Command pulses directly to the laser without a tickle pulse the response
56. r to Section 2 4 2 for information regarding high frequency operation A tickle signal must still be provided to the laser during standby periods if fast beam response is important The UC 1000 can be modified to achieve 100 duty cycle operation if required for your application Consult the factory for requirements and details 6 5 PC Control of Laser To control on off pulsing of the laser pulsed mode a signal providing TTL level pulses is connected to the GATE input connector on the rear panel of the UC 1000 Typically this signal would be generated using an add in digital I O card and controlling software On the standard UC 1000 the gate input is set to internal pull up normally on mode A TTL high input signal or an open disconnected gate connector will cause the beam to turn on To gate the beam off a logic low input or short circuit must be applied to the GATE input connector UC 1000X Mod X controllers have the gate input set to internal pull down normally off mode This prevents the beam from being enabled unless TTL logic high 43 5 to 5V signal is applied to the GATE input connector In the pull down normally off mode an asserted logic low state short circuit to ground or an open or disconnected GATE input locks the beam off Contact SYNRAD or see the UC 1000 Operation Manual for information on changing the UC 1000 s gate input mode for your application If your UC 1000 does not have an internal pull up pull down selec
57. radiation Use of controls or adjustments or performance of procedures other than those specified herein may result in exposure to hazardous invisible laser radiation damage to or malfunction of the laser Severe burns will result from skin exposure to the laser beam Always wear safety glasses with side shields to reduce the risk of damage to the eyes when operating the laser Safe operation of the laser requires the use of an external beam block to safely block the beam from traveling beyond the desired work area Use firebrick or a similar non scattering non combustible material as the beam block NEVER use organic material or metals as the beam block organic materials in general are apt to combust or melt and metals act as specular reflectors Series 48 Lasers 1 Operation and Service Manual Ch 1 Safety and Regulatory Compliance Table 1 1 Series 48 Safety Features FEATURE VERSIO DESCRIPTION CDRH REQUIRED N Keyswitch Keyswitch Panel control ON OFF switch Key cannot be removed in the Yes ON position Power Indicator Panel indicator green Indicates that DC power is available Keyswitch for the laser LED illuminates when keyswitch is turned to ON the remote keyswitch is closed and no faults exist Lase Indicator Panel indicator red Indicates that laser is in Lase mode Keyswitch LED illuminates when laser beam is active The brightness of the LED is related to duty cycle Higher duty cycles higher laser o
58. ration of Conformity is provided to certify that EMC performance levels of Series 48 lasers are compliant with applicable EU directives and standards DECLARATION OF CONFORMITY Applicable EU Directive s 89 336 EEC EMC Directive Applicable Standards Norms EN5501 1 Radiated Class A Group 1 EN60825 1 Laser Safety EN50082 1 Generic Immunity IEC801 2 Electrostatic Discharge IEC801 3 RF Radiated IEC801 4 Fast Transients Manufacturer SYNRAD Inc 6500 Harbour Heights Parkway Mukilteo WA 98275 Model Number Date of Compliance J48 1 Oct 15 1998 J48 2 Oct 15 1998 J48 5 Oct 15 1998 SYNRAD Inc hereby declares that the equipment specified above conforms to the above Directive s and Standard s Figure 1 2 Declaration of Conformity Series 48 Lasers 5 Operation and Service Manual Ch 1 Safety and Regulatory Compliance 1 4 Warning Labels Each Series 48 laser is shipped with several different types of labels attached to the laser chassis These labels identify apertures from which laser radiation is emitted power output levels and precautions relating to performance characteristics Refer to Appendix A Pages A2 A4 for label location diagrams 1 5 Operation and Service Manual Precautionary Notations There are two types of precautionary notations used throughout this manual WARNING A WARNING notation is used to identify a process or procedure that could result in exposure to laser radiation CAUTION
59. remote interlock or the factory installed DB9 jumper 3 Check fuses and supply voltages Ifthe laser is warm allow it to cool and cycle the source power to see if the thermal cutout was activated Check for proper Command input signal The laser will not operate unless an input signal to the CTRL jack is present Return keyswitch to the OFF position for a few seconds or cycle source power to reset circuits If the laser still will not start factory authorized servicing of the laser may be required Laser power is low Check waveform of Command input signal if modulation is used Check input voltage level 30 VDC minimum 3 Use mode screen ceramic tile can be used to verify circular optical beam shape at a distance of 3 to 5 feet from the laser If beam spot is not circular and stable the optical mirror alignment is out of adjustment See below If laser power is below specification laser gas may need to be replaced or one of the RF drivers is defective Contact a factory authorized service center Laser spot is not circular 1 Check for proper air or water coolant flow Or docs The optical mirrors are adjusted at the factory to give a TEMoo output beam that is circular 3 feet or more from the output aperture Severe mechanical forces on the chassis may shift the original alignment of the mirrors temporarily or permanently Contact a factory authorized service center Laser power varies or
60. s the radiated RF emissions limit The generic standard EN50082 1 defines immunity requirements published by the International Electrotechnical Commission IEC Refer to Table 1 2 for a summary of EU performance requirements pertaining to Series 48 lasers Table 1 2 European Union Directives DIRECTIVE SCOPE PROVISION 55011 Limits and methods for measurement of Emitted RF Radiation shall not exceed limits radio frequency disturbance characteristics described in document CISPR11 for industrial scientific and medical ISM equipment EN50082 Generic standard governing ISM Immunity to electrostatic discharge levels defined performance relating to radiated emissions in document IEC801 Part 2 and ESD sensitivity and immunity to transient bursts Equipment shall operate normally when exposed to RF emissions at levels described in document TEC801 Part 3 Immunity to electrical fast transient bursts at levels defined in document IEC801 Part 4 After a product has met the requirements of all pertinent EU directives the product can bear the official compliance mark of the European Union depicted in Figure 1 1 Figure 1 1 European Compliance Mark 4 Series 48 Laser Operation and Service Manual Ch 1 Safety and Regulatory Compliance Series 48 lasers have demonstrated performance characteristics that have met or exceeded the requirements of EN 60825 1 and the EMC directive 89 336 EEC 1 3 Declaration of Conformity A Decla
61. sation and water damage to the laser 5 For overall height dimension add 0 25 in to allow for top cooling fins Series 48 Laser 9 Operation and Service Manual Ch 2 Theory of Operation 2 2 Technology Overview Series 48 lasers incorporate the latest technology in sealed carbon dioxide devices combining the best features of both waveguide and free space laser technology The all metal laser tube construction U S Patent 4 805 182 features the ruggedness stable optical support and small size of waveguide lasers Its larger bore 4 8 mm eliminates the high optical power density of waveguide lasers with their predisposition to optical degradation and incorporates the mode purity and easy optical alignment of free space TEMoo lasers Low cost is achieved by using simple extruded and welded aluminum structures packaged together with compact state of the art RF power supplies The laser is self contained requiring only the application of power cooling air or water and a control signal It is therefore ideally suited for overhead installation where the laser is gantry mounted No RF cable runs are required 48 Series lasers emit a laser beam with a wavelength of 10 6 um The beam shape is square at the laser output aperture changing to circular at distances of approximately 1 meter or more from the laser The laser beam diverges due to diffraction at a full angle of 4 milliradians with the beam waist at the output aperture of the laser
62. sing water cooling the recommended flow rate is 0 5 gallons per minute GPM for the 48 1 and 0 8 GPM for the 48 2 model at an inlet temperature of 18 to 20 C Inlet cooling water temperature should always be maintained above the dew point to avoid condensation and water damage to the laser Heat removal from the cooling water is required and can be accomplished using a chiller Water cooling is designed to provide sufficient cooling at up to 100 duty cycle Water enters at the laser s rear plate through the lower side mounted 1 4 inch diameter cooling tubes and exits through the top mounted cooling tubes Both circuits must be used in parallel to maintain thermal balance A cooling intake and outlet manifold using a quick disconnect fitting system refer to Figure 4 3 is shipped as a kit with the laser The two U shaped connections should be installed on the front plate The quick disconnect fittings can be removed from the tubing by compressing the front ring of the fitting against the body of the fitting The cooling kit also includes quantities of both straight and elbow fittings Other compatible fittings can be ordered from local fitting supply houses REAR LATE FRONT LATE ATER ER T D gt 4 REA SKS cu Vc 2 Y a Q Ce 2 d E ATER INTAE X S B STRAI T EL O FITTIN FITTIN NOTES DETAIL A ALL FITTINS NEED TO E RESSED COMLETELY O
63. supporting data has been provided in several appendices located after Chapter 8 In the event additional information is required for your application please contact SYNRAD at 1 800 SYNRADI Please read this manual completely before using your laser To prevent injury to personnel or damage to the laser follow all safety precautions handling and setup instructions as described herein Ch 1 Safety and Regulatory Compliance Chapter 1 Safety and Regulatory Compliance 1 1 CDRH Requirements Safety Features Series 48 lasers are designed to comply with requirements imposed by the Radiation Control for Health and Safety Act of 1968 Under this act the Food and Drug Administration issued a performance standard for laser products 21 CFR 1040 10 and 1040 11 This performance standard was developed to protect public health and safety by imposing requirements upon manufacturers of laser products to provide indication of the presence of laser radiation by providing the user with certain means to control radiation and by assuring adequate warnings to all personnel of the potential hazard through the use of product labels and instructions Federal regulations require that all laser products manufactured on or after August 2 1976 be certified as complying with the performance standard The manufacturer must demonstrate the product s compliance with the standard prior to certification or introduction into commerce by furnishing to the Center for D
64. switch the remote interlock function has been bypassed internally These lasers will function identically to J version lasers manufactured prior to August 1999 For OEM customers wishing to access the remote interlock function via the DB 9 connector please contact the factory for details 6500 Harbour Heights Parkway Mukilteo WA 98275 Tel 425 349 3500 Fax 425 485 4882 Email synrad synrad com Series 48 Lasers J VERSION Operation and Service Manual Part Number 900 00007 02 SYNRAD Inc 6500 Harbour Heights Parkway Mukilteo WA 98275 1 800 SYNRADI TEL 425 349 3500 FAX 425 485 4882 E Mail synrad Web site http www synrad com Table of Contents 1 Safety and Regulatory Compliance 1 11 CDRH Requirements Safety Features 1 1 2 EMI and Safety Compliance 3 12 1 Federal Communications Commission FCC ums tee n onde S S 3 1 2 2 European Union EU Requirements 4 1 3 Declaration of Conformity 11 corte deserens 5 1 4 Warning Labels osos des itle clas ett 6 1 5 Operation and Service Manual Precautionary Notations 6 1 6 General Hazards oie Aedes aui Sete eae etd 6 2 Theory OR cine rebates imp aola on RRO 9 24 Technical Speciicatlons esee 9 2 2 Technology
65. time from the user s Command pulse until laser emission is unpredictable and optical rise time will be degraded This is due to the finite time required to create a plasma state within the laser tube and depends heavily on the amount of time that the laser has been off no Command signal before a pulse is applied This inconsistent and unstable firing can cause problems in precision industrial uses where even short delays in firing are important The tickle signal pre ionizes the laser gas so that it is just below the lasing threshold In this way the laser can respond predictably and almost instantaneously to the user s Command signal even when there is considerable time delay laser off time between commands This laser contains a precision pulse stretching circuit that is preset to accept a us 20 no lase tickle pulse threshold is preset for 3 0 5 based on PWM and tickle frequency Command input of 5 kHz 0 UC Figure2 5 Tickle Pulse Waveform 2 4 2 PWM Clock Frequency PWM duty cycle controls the laser s power level so you can direct the laser to perform a variety of cutting and marking tasks The standard PWM frequency is 5 kHz which has a period of 200 us The duty cycle of a PWM waveform is the percentage of the period that the output signal is high If the amplitude of the 5 kHz signal is high for 100 us and low for 100 us it has 50 duty cycle If the signal s amplitude is high f
66. to pulse fidelity Damage or malfunction may occur if this or equivalent drive signals are not used See manual for tickle pulse specifications or contact factory endix Supporting Documentation TOP KEW A o o CAUTION POWER CONDENSATION AND MANEACTEE DATE WATER DAMAGE CAN 6500 Harbour Heights Pkwy OCCUR IF COOLING WATER Mukikeo WA 98275 IS BELOW DEW POINT SEE OPERATION MANUAL KYSWITCH ERSION This laser product is manufactured under U S Patent MADE IN U S A This laser manufactured by Synrad Inc Mukilteo WA 98275 4 805 182 4 837 772 complies with 21 CFR subchapter J 5 008 894 5 215 864 at the date of manufacture and others OEM ERSION This laser manufactured by Synrad Inc Mukilteo WA 98275 does not comply with 21 CFR subchapter J at the date of manufacture M 48 1 Label Location Diagram Series 48 Lasers Operation and Service Manual A 42 Appendix A Supporting Documentation CAUTION These RF Excited Lasers must be provided with a pre ionizing Tickle signal during standby or laser low periods This is automatically provided with Synrad s UC1000 power contr
67. tor switch contact SYNRAD for a free plug in upgrade module If the user wishes to control laser power using a computer either an analog voltage or an analog current can be connected to the UC 1000 ANV C BNC input connector To generate the analog voltage a digital to analog D A or DAC card capable of generating OV laser off to 10V maximum power must be installed To generate the analog current a D A card capable of generating 4mA laser off to 20mA maximum power must be installed Controlling software is required for either analog voltage or analog current operation ANV or ANC control of the laser is not a linear transfer function For example a 12 mA ANC or 5V ANV input does not necessarily generate a 5096 power level The general curve is similar to that shown in Figure 2 1 A more precise definition of the curve can only be obtained experimentally on an individual basis Series 48 Lasers 35 Operation and Service Manual Ch 6 Operating Instructions 36 Series 48 Lasers Operation and Service Manual Ch 7 Maintenance and Troubleshooting Chapter 7 Maintenance and Troubleshooting Table 7 1 Series 48 Troubleshooting Table FAULT PROBABLE CAUSE Laser beam is off Check power source keyswitch and aperture shutter to verify that they are properly set Allow for the built in five second delay between turning on electrical power and initiation of laser excitation Check for the presence of a remote keyswitch
68. ume Waste heat is conducted away by all four metal sides of the bore to the outer walls of the plasma tube where it is transferred to the chassis In contrast to waveguide lasers that have a closed bore periphery the Series 48 lasers have four 0 02 inch slots small gaps extending longitudinally along the length of the bore refer to Figure 2 2 These slots are used for electrical insulation between the two pairs of orthogonal electrodes However these slots are also effective for diffusion cooling of the laser gas 2 3 2 Optical Resonator The optical resonator consists of a 3 meter radius of curvature total reflector and a flat ZnSe output coupler with reflectivities of 95 or 92 The mirrors are held on with Viton fluorocarbon elastomeric o rings for factory adjustment by means of three Torx head 4 40 screws No epoxy is used for sealing The screws are secured by adhesive after alignment The 4 8 mm bore in conjunction with the mirror curvature selected limits the output beam to TEMoo modes when the mirrors are properly aligned Small variations in output power up to 1096 are seen during warm up as the cavity mirror spacing changes due to thermal expansion of the plasma tube The output wavelength remains at or near 10 6 um 10 57 to 10 63 um Series 48 Laser 11 Operation and Service Manual Ch 2 Theory of Operation The beam shape is square at the laser output aperture changing to circular at distances of approximately 1 mete
69. utput produce brighter illumination 5 Second Delay Circuit element Disables laser output for 5 seconds after Yes Keyswitch keyswitch is turned to ON position and remote keyswitch is closed Defeatable by internal DIP switch Power On Reset OEM Circuit element Disables laser if input power is removed and Keyswitch then later reapplied power failure while the keyswitch and remote keyswitch are still closed Operator must reset the keyswitch or remote keyswitch to restore operation Defeatable by internal DIP switch Remote Interlock Circuit element Allows laser to be shut down from a remote Keyswitch interlock such as a door or housing switch Operator must reset the keyswitch or remote keyswitch to restore operation Remote OEM Circuit element Allows operator to turn laser on or off from a Keyswitch Keyswitch remote location A series extension of the keyswitch circuit Over Under OEM Circuit element Laser fault shutdown will occur if supply Voltage Protection Keyswitch voltage falls below 15 or rises above 36V Power down sequence keyswitch reset or remote keyswitch reset is required to restore operation Reverse Voltage OEM Circuit element Internal diode protects internal circuitry from No Protection Keyswitch reverse input voltages The external fuse will blow Over Temperature OEM Circuit element Over temperature shutdown will occur when Protection Keyswitch the temperature o
70. ween your analog voltage or current source typically a computer or PLC and the UC 1000 s ANV C connector 5 3 2 48 5 Interconnections 1 Make coolant connections to the laser as described in Section 4 4 2 2 Connect the red power cable to the positive terminal on the DC power supply Connect the black power cable to the negative terminal on the DC power supply Note If using a SYNRAD DC 5 Power Supply verify that the input power jumper is properly configured The DC 5 is preset for 230 VAC input power You must jumper terminals 1 and 2 on the input power terminal strip for 115 VAC input Refer to the documentation provided with the power supply for additional wiring information 3 Make interconnections between your electronic control equipment and the laser s DB9 connector as required 30 Series 48 Lasers Operation and Service Manual Ch 5 Unpacking and Setup 4 Attach the UC 1000 Controller s power cable between the UC 1000 s PWR 24 VDC jack and the laser s Auxiliary Power connector The UC 1000 can also be powered from a wall plug by using the supplied wall plug transformer 5 Attach the long leg of the control cable to the UC 1000 s OUTPUT connector Attach the short legs of the connector to the laser s CTRL and CTRL 2 connectors 6 If your application uses external gating signals to command on off switching of the laser attach a BNC cable between your Gate signal source suc

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