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3. Maintenance of Laser Oscillator Section

189

ML-2550A/2551A

Chapter 1 How to Perform Maintenance

Introduction Part

Operating Part

Maintenance Part

Appendixes

Installation

and

Preparation

Part

3. Maintenance of Laser Oscillator Section

Replacing the Flashlamp

The flashlamp is provided in the laser chamber and used for excitation at laser

oscillation. We recommend replacing the flashlamp when the number of laser outputs

reaches about 1,000,000 shots, as standard.

CAUTION

When replacing the flashlamp, turn OFF the power to the Laser and wait for at least 5

minutes.

Item required

Gloves (vinyl), clean cloth, alcohol, Phillips screwdriver, ball-point screwdrivers 2.5

mm, 4 mm, and 5 mm, and flashlamp (new product)

Removing the Laser Chamber

(1) Turn OFF the power supply of the laser welder and remove the lamp-replacing

cover on the top surface of the main unit.

⇒

In 5 minutes or more after the turning OFF the power supply, remove the cover.

(2) Loosen the bolts of the laser chamber and remove the top lid.

(3) Pull up the top part of the reflector to take it out.

⇒

Take care not to damage the internal surface of the reflector.

Laser chamber top lid

Removing by

loosening 8-M6

Interlock switch

Reflector (Top portion)

Remove screws on side,

pull toward you.

Lamp-replacing cover

Содержание ML-2550A

Страница 1: ...AA06M0642E 37 OPERATION MANUAL YAG LASER WELDER ML 2550A 2551A...

Страница 2: ...ains the outline and functions of the laser Regarding the YAG Laser this part explains the basic configuration and functional outline of this product including options so that the user can know the co...

Страница 3: ...r Section 29 Inside of the Front Side 30 2 Name and Function of Each Section on the Top Side 32 Top Cover Section 32 Laser Controller MLE 124A 33 Laser Oscillator Section 34 3 Name and Function of Eac...

Страница 4: ...creen 101 2 Setting the Laser Light Delivery 104 Laser Light Sharing 104 Operating Branch Shutters on the STATUS Screen 107 Controlling Branch Shutters Independently 108 3 ChangingtheAcceptanceTimefor...

Страница 5: ...Unit Section 178 Cleaning the Solenoid Valve Strainer 178 Draining Water from the Primary Cooling Water 179 Draining Water from the Secondary Cooling Water Tank 181 Changing the Ion Exchange Resin an...

Страница 6: ...6 ML 2550A 2551A Timing Chart 210 Explanation of Terminology 216 Output Schedule Data Entry Table 221 Index 227...

Страница 7: ...tion They are warnings about actions out of the scope of the warranty of the product Denote actions which operators must take Denotes that the content gives notice of DANGER WARNING or CAUTION to the...

Страница 8: ...n and that can cause electric shock and fire If any part needs to be repaired consult us or your distributor Stop the operation if any trouble occurs Continuous operation after occurrence of a trouble...

Страница 9: ...r cover it with non combustible material Do not apply the laser beam to combustible materials To avoid risk of fire never apply the laser beam to flammable or combustible materials Do not cover the La...

Страница 10: ...arefully by hand If they are operated roughly or with the tip of a screwdriver a pen etc they may be broken Operate the switches and buttons one at a time If two or more of them are operated at a time...

Страница 11: ...allowable load Retract the level adjuster fully when transporting the Laser Precautions for using a fork lift The following figure shows fork inserting positions As shown at right adjust the distance...

Страница 12: ...as blanket sponge and rubber material between the laser welder and the belt and to have the belts press the Laser evenly Have the distance Figure B on page 13 between the top corner of the Laser and t...

Страница 13: ...when freighting the Laser Insert a broad and thick cushion between the front door and wall to provide enough clearance between the wall and the upper front panel of the Laser Insert pillows such as ti...

Страница 14: ...is way Put the laser welder in close contact with the two surfaces of floor and wall and fix it securely with a belt Be sure to use cushion between the Laser and belt not to hurt the Laser When it is...

Страница 15: ...A For Disposal This product incorporates parts containing gallium arsenide GaAs At the time of disposal separate it from general industrial waste or domestic waste and carry out the disposal in accord...

Страница 16: ...E DISCONNECT POWER AND WAIT 5MIN BEFORE SERVICING P 00374 001 HIGH VOLTAGE EXPOSED TO ELECTRICAL SHOCK HAZARD IF INTERLOCK IS DEFEATED PERSONNEL MAY BE DISCONNECT POWER AND WAIT 5MIN BEFORE SERVICING...

Страница 17: ...MAX MEDIUM PULSE WIDTH WAVE LENGTH CLASS 4 LASER PRODUCT JIS C6802 2014 PULSE Nd YAG 1 064 m CW 0 650 m LD IEC60825 1 2014 AVOID EYE OR SKIN EXPOSURE TO DIRECT OR SCATTERED RADIATION AVOID EXPOSURE LA...

Страница 18: ...EFER TO THE USER S MANNUAL FOR DETAILS CAUTION P 1517 FLOATING PANEL ON THE WATER AFTER FILLING WITH DI WATER FLOAT THE ATTACHED Inside of the top surface of the main unit top surface of the branch un...

Страница 19: ...Introduction Part...

Страница 20: ......

Страница 21: ...ear infrared rays that are invisible to man Most of laser equipment for laser welding belongs to class 4 laser that is the most hazardous in the classification of laser products specified in JIS When...

Страница 22: ...the energy of a single laser light beam is 100 50 laser light is simultaneously irradiated when the number of deliveries is 2 or 33 laser light is simultaneously irradiated when the number of deliveri...

Страница 23: ...ent Remote control is available because the Laser Controller is detachable As welding schedules are entered on the liquid crystal display the user can perform operations easily and accurately A variet...

Страница 24: ...all the packaged products are included Package for main unit Product name Model No Q ty YAG Laser Welder ML 2550A 2551A 1 Package for accessories Product name Model No Q ty Flashlamp MLD 0602 1 Flowtu...

Страница 25: ...S1011523 M0642E 1 Power cable 5 m 220V A 03315 002 1 380V A4 04967 1 1 The protective glasses are not attached to the handy torch type laser welder since the dedicated helmet is attached to it Main Un...

Страница 26: ...owersharing deliveries Output to 2 optical fibers of an optionally selected block after 4 fibers are divided into 2 blocks namely front 2 fiber block and rear 2 fiber block Optical fiber Any optical f...

Страница 27: ...S 232C RS 485 conversion adapter Exclusively for MSC 08 RS 485 cable 10 m A 05391 001 RS 232C cable 0 2 m KRS 9F25F02K End face checker EC 02 LED 50 Output unit with fiber sensor Please contact us for...

Страница 28: ...to RS 485 signals and then output to the main unit Printer When the printer BL2 58SNWJC SANEI ELECTRIC INC is connected by RS 485 cable the output schedules of each schedule and measured values on the...

Страница 29: ...e main unit Function of Each Section of the Front Cover 1 MAIN SWITCH Switch Turns ON and OFF the power supply 2 Front Door This door is opened to perform maintenance including cable connections 3 Fro...

Страница 30: ...to input signals e g start signal and schedule signals 3 EXT I O 3 Connector Used to input and output Emergency signals 4 SIGNAL Connector BNC connector used to output an analog signal representing th...

Страница 31: ...nch shutter of the laser welder are closed to shut off the laser light output 8 Cooling Water Tank Holds secondary cooling water used for cooling the YAG rod flashlamp and its power supply 9 Water Lev...

Страница 32: ...er This controller sets welding conditions and operates the laser welder The setting items and set values are displayed on the liquid crystal display 5 EMERGENCY STOP Button This is an emergency stop...

Страница 33: ...he control panel on the top surface of the main unit and used to set welding conditions and performs operations to output laser light If a circuit cable is connected operations can be performed in a r...

Страница 34: ...s button functions in the same way as the EMERGENCY STOP button of the main unit Laser Oscillator Section The laser oscillator section that makes its appearance after the top cover is opened and the i...

Страница 35: ...lding is invisible red guide light is used to perform oscillation adjustment incident adjustment welding point positioning etc 8 Laser Chamber Contains the flashlamp and the YAG rod The flashlamp ligh...

Страница 36: ...For rear side of the Laser Power supply and cooler are beyond this cover 3 Air Filter At the intake of air Prevents the Laser from dust and dirt Cooling fan is beyond this filter 4 Solenoid Valve Cov...

Страница 37: ...Installation and Preparation Part...

Страница 38: ......

Страница 39: ...onment suitable for the installation are explained below Install laser welder in a sure place at a level with the ground surface If the product is operated in inclined or fallen form a failure will oc...

Страница 40: ...ment a short circuit accident may occur to cause malfunction Therefore in laser processing be sure to install an exhaust device such as dust collector and blower in a proper position to keep a clean e...

Страница 41: ...sin If the temperature falls below 0 C in winter the cooling water will be frozen and the Laser may be broken Particularly in cold districts take care that the temperature of the Laser does not fall b...

Страница 42: ...2 Remove the top cover Remove the top cover set screws provided on both sides and pull the top covers A and B in this order straight upward to remove them 3 Loosen the screws to clear the fixture so...

Страница 43: ...er 1 Install the attached adjusters pressure fixtures on the adjusters provided in 4 positions in the lower part of the main unit 2 Fix each adjuster on the floor by using a connecting apparatus such...

Страница 44: ...the primary cooling water The secondary cooling water is used to cool the flashlamp and YAG rod Use deionized water or purified water for the secondary cooling water Tap water industrial water ground...

Страница 45: ...y must be according to following table Item Unit Reference value Standard item pH 25 C 6 0 to 8 0 Electric conductivity 25 C mS m Up to 30 Chloride ion mgCl L Up to 50 Sulfate ion mgSO4 2 L Up to 30 A...

Страница 46: ......

Страница 47: ...and surges Item required Phillips screwdriver Operating Procedure 1 Open the front door and remove the plastic cover on the power input terminal 220 V AC 380 V AC depending on the specification 2 Lea...

Страница 48: ...ing on the temperature of the cooling water Refer to Required Quantity of Primary Cooling Water on page 45 Item required Braided hose Internal diameter 15 mm and hose band Operating Procedure 1 Connec...

Страница 49: ...tank Take care not to attach dirt onto the floating panel 3 Feed cooling water up to the line under the water level label HIGH by using the attached water feed pump Use the water feed pump only for se...

Страница 50: ...pe it out with lens cleaning paper For how to clean the optical fiber refer to the Maintenance Part Chapter 1 3 Maintenance of the Laser Oscillator Section on page 193 For a check for stain use the op...

Страница 51: ...g and 1 4 at 4 powersharing Core dia Model ML 2550A ML 2551A SI 0 3mm 50J 200W SI 0 4mm 80J 200W 50J 300W SI 0 6mm 80J 400W SI 0 8 1 0mm Use the SI optical fiber The GI optical fiber cannot be used It...

Страница 52: ...uter side ring of the plug in the direction of the arrow to fix the optical fiber Tighten the ring by hand without using a tool 8 Install the branch unit cover and top cover as they were 9 Return the...

Страница 53: ...y using the air blow 2 Insert the key provided on the optical fiber plug along the groove on the output unit side 3 Turn the outer side ring of the plug in the direction of the arrow to fix the optica...

Страница 54: ...g Procedure 1 Remove the set screws for control panel on both sides and open the control panel Then take out the circuit cable cable clamp and set screws that are accommodated in the control panel 2 C...

Страница 55: ...ons of Each Section Introduction Part Installation and Preparation Part Operating Part Maintenance Part Appendixes 4 Connect the circuit cable to the laser controller and the Laser Clamp the cable at...

Страница 56: ...provided with RS 485 the conversion adapter for external communication is not required Item required RS 232C RS 485 conversion adapter RS 485 cable and RS 232C cable Operating Procedure 1 Connect the...

Страница 57: ...Operating Part...

Страница 58: ......

Страница 59: ...to the laser is OFF the laser is under control by laser controller To switch the control by external input output signals over to the control by laser controller turn OFF pin No 23 control switching...

Страница 60: ...the control by laser controller set the output schedules and sharing method by operating the buttons while watching the liquid crystal screen display and press the LASER START STOP button to output la...

Страница 61: ...TATUS MONITOR SEAM and PASSWORD screens to set a welding schedule and also the PRINTOUT and INITIALIZE screens There are 6 types of basic screen as shown below which are displayed on the liquid crysta...

Страница 62: ...green When the OFF blue button is pressed a check window is displayed If OFF is switched over to ON by pressing the ON or YES button the ON setting is displayed in green Example When pressing ON Ther...

Страница 63: ...pressing an optional button The set method FIX or FLEX is displayed at the button PUMP Displays the ON OFF status of the pump to circulate cooling water WATER TEMP Displays the temperature of cooling...

Страница 64: ...anch shutter is opened At OFF the branch shutter is closed When there is even one branch shutter or beamsplitter set to ON the button is displayed in blinking green How to Use the Screen Selecting But...

Страница 65: ...laser output value are different between fixed waveform FIX and flexible waveform FLEX For seam welding the output conditions for seam welding can be set on the SEAM screen Fixed waveform FIX screen...

Страница 66: ...output value of FLASH is up to 100 when PEAK is set to 8 0 kW ML 2551A The threshold value of PEAK is 5 0 kW The laser output value of FLASH is up to 100 when PEAK is set to 5 0 kW Set the laser outp...

Страница 67: ...econd When 0 is set the single output is set Common to REPEAT on the SEAM screen SHOT Sets the number of laser outputs in the range of 0000 to 9999 When the laser output count reaches the set value th...

Страница 68: ...of the applied optical fiber to protect the optical fiber from excessive incident light to the optical fiber The setting range is 0 3 to 1 0 mm The maximum value that can be input into the optical fib...

Страница 69: ...utput Press the TROUBLE RESET button to clear the trouble SHOT COUNT Displays the total number of laser light outputs Refer to this number when replacing the flashlamp To reset the display to 0 perfor...

Страница 70: ...0 being the ratio to PEAK POWER set on the SCHEDULE screen The laser output value is shifted to the output value set for the next POINT in a gentle slope waveform by the fade in out function to adjus...

Страница 71: ...GE Sets the validity invalidity of the set password to ON OFF At OFF the password is validated and the set values are protected At ON the password is not validated and the set values are not protected...

Страница 72: ...rinted SCHEDULE Prints the set values and waveform on the SCHEDULE screen by using the schedule number set by PRINTOUT SCHEDULE POWER MONITOR Prints the set values and measured result on the MONITOR s...

Страница 73: ...RY TROUBLE occurs at the time of the next power on At that time press the button again NETWORK Sets the equipment No in the range of 00 to 15 to perform remote operations by using the external communi...

Страница 74: ...ime for laser start signal and schedule signal can be changed LCD CONTRAST Sets brightness of the liquid crystal display to HIGH MIDDLE or LOW BUZZER Sets the sound of buzzer during the touch panel op...

Страница 75: ...rned ON at the start of the first shot and turned OFF at the end of the last shot 4 At ON the noise filter function of the EXT LASER START signal becomes invalid 5 Unused 6 Switches the measurement ac...

Страница 76: ...sed 2 3 and 4 Sets the acceptance time for laser start signal and schedule signal The following speeds can be set by combining ON and OFF 2 3 4 Acceptance time ON ON ON 0 1ms OFF ON ON ON OFF ON OFF O...

Страница 77: ...Unused 6 At ON the function automatically switching the screen from the SCHEDULE screen to the MONITOR screen becomes invalid 7 and 8 Unused SWITCH 6 1 2 3 4 to 8 Switches the functions assigned to 1...

Страница 78: ...Output Schedule Data Entry Table in advance For the details of setting items refer to Welding Schedule Setting Screen on page 63 1 Setting Output Schedules by Fixed Waveform FIX Set the output time a...

Страница 79: ...H3 press the COOL button to set the output stop time ms in COOL2 8 Press the SLOPE setting button Enter the time TIME ms required for laser light to up slope get gradually stronger in FLASH1 Note The...

Страница 80: ...tput Schedules 1 Check the waveform displayed on the screen The set laser output time and laser output value are graphically displayed and the output laser light can be checked as a waveform At the le...

Страница 81: ...le maximum peak value of laser output differs depending on the model ML 2550A 8 0 kW ML 2551A 5 0 kW 5 Press the laser output time TIME ms and laser output value POWER setting buttons of POINT 01 to P...

Страница 82: ...conditions for seam welding can be set For the setting method refer to Setting the Output Conditions for Seam Welding on page 83 3 Checking Output Schedules 1 Check the waveform displayed on the scre...

Страница 83: ...t herein is set on the SCHEDULE screen 1 Setting the Output Conditions Taking seam welding in which laser light is continuously output 100 times as an example the output count of POINT 01 to POINT 06...

Страница 84: ...T the POWER of the final set value in SHOT COUNT is repeated until the output count reaches the output count set in SHOT For example supposing that SHOT is set to 40 up to 40 shots are also validated...

Страница 85: ...t function an upper lower limit judgment of the laser energy monitor is performed only for the shot that is output by setting POWER to 100 0 For shots other than the shot output at 100 0 no upper lowe...

Страница 86: ...ess the STATUS button to display the STATUS screen Control by Laser Controller PANEL CONTROL When the laser is independently used or when the power supply of the PLC or personal computer connected to...

Страница 87: ...ter To control the laser welder from the laser controller press the BEAM button on the STATUS screen to set the opening closing the branch shutter SHUTTER 1 to SHUTTER 4 are associated with branch shu...

Страница 88: ...UNT or GOOD COUNT of RESET COUNT The numeric value is reset and 000000000 is displayed Setting the Count notification Function When SHOT COUNT total number of laser light outputs or GOOD COUNT appropr...

Страница 89: ...ntenance Part Appendixes When SHOT COUNT reaches the value set in PRESET COUNT a screen to prompt the operator to check the flashlamp is displayed When GOOD COUNT reaches the value set in PRESET COUNT...

Страница 90: ...Error No 51 FIBER SETTING ERROR or Error No 48 FIBER OVERRATE is displayed At this time change the core diameter setting For the laser output conditions for the core diameter refer to Chapter 2 Stand...

Страница 91: ...nd a measured energy value is displayed The measured energy value of the last output laser light can also be checked by the corresponding SCHEDULE number if a registered SCHEDULE number is entered 1 P...

Страница 92: ...y power little by little When the supply power exceeds the value set here a screen to prompt you to replace the flashlamp is displayed 1 Press the REFERENCE SETTING setting button Enter the ratio of t...

Страница 93: ...connector is open circuited for output Press the TROUBLE RESET button to clear the screen display After the screen display is reset pin No 9 of the EXT I O 1 connector output remains in an open circui...

Страница 94: ...esent Password 1 Enter the set password into the password input box Press the password by pressing keyboard keys on the screen The AC key deletes all the entered characters The BS key deletes a charac...

Страница 95: ...HANGE setting button A window to select ON OFF is opened At ON the set password can be changed At OFF it is impossible to change the set password The VALUE CHANGE setting button cannot function unless...

Страница 96: ...4 alphanumerical characters 2 Press the ENTER key on the keyboard A confirmation screen appears 3 Enter the same password and press the ENTER key The set password is registered and the PASSWORD scree...

Страница 97: ...HEDULE Schedule number FORM FIX FLEX waveform switching SHOT laser light output count of each No of POINT 01 to POINT 20 POWER laser output value of each No of POINT 01 to POINT 20 STATUS Screen SCHED...

Страница 98: ...asured value of 0 1 J increments over to 0 01 J increments so that more minute welding work can be performed 1 Displaying the MEMORY SWITCH Screen 1 Turn OFF the CONTROL keyswitch and turn ON the MAIN...

Страница 99: ...hed the set values of SCHEDULE are initialized To prevent misoperation the setting cannot be changed unless No 8 of SWITCH 1 is set to ON When the setting of No 6 of SWITCH 1 is changed and the ENTER...

Страница 100: ...Welding Schedules Setting example after switching 6 of SWITCH 1 ON Note When No 6 of SWITCH 1 is set to ON the settable maximum peak value of laser output PEAK POWER on the SCHEDULE screen becomes 1...

Страница 101: ...creen is explained Usually this setting permits switching the pulse width of 0 1 ms step over to 0 05 ms step so that more minute welding work can be performed 1 Displaying the MEMORY SWITCH Screen 1...

Страница 102: ...tion the setting cannot be changed unless No 8 of SWITCH 1 is set to ON When the setting of No 7 of SWITCH 1 is changed and the ENTER key is pressed the setting of No 8 of SWITCH 1 is returned to OFF...

Страница 103: ...t Maintenance Part Appendixes Setting example after switching 7 of SWITCH 1 ON On the FLEX screen the screen is switched and displayed in the same way Note The value of FLASH1 COOL1 FLASH2 COOL2 FLASH...

Страница 104: ...lable Sharing method Corresponding model Single Output to single optical fiber ML 255 A 010 2 powersharing Output to 2 optical fibers at the same time ML 255 A 020 3 powersharing Output to 3 optical f...

Страница 105: ...onally selected out of the built in branch shutters is opened to output laser light For example when branch shutter 2 is opened laser light is output to the optical fiber connected to input unit 2 If...

Страница 106: ...ned branch shutter 2 Laser light is reflected on the beamsplitter by operated timesharing unit and transferred from opened branch shutter 3 Timesharing unit 100 Timesharing unit 100 Branch shutter 4 B...

Страница 107: ...ring OFF ON OFF OFF 3 timesharing OFF ON OFF ON 4 timesharing OFF ON ON OFF 2 timesharings of 2 powersharing deliveries OFF ON ON ON Operating Procedure 1 Press the BEAM button A window to set the ope...

Страница 108: ...ring specification The DIP switches of SW2 is provided on the CPU board in the main unit The branch shutter independent control function is assigned to No 5 6 7 and 8 of SW2 Accordingly remove the sid...

Страница 109: ...shutter No to be operated to ON 1 to 4 of SWITCH 4 are associated with branch shutters 1 to 4 Accordingly set them to ON within the number of mounted branch shutters 3 Press the setting buttons of 1 t...

Страница 110: ...hutter 3 as single delivery depending on a difference in beamsplitter mounting condition Branch shutter 3 Branch shutter 2 Branch shutter 1 100 50 50 Beamsplitter 100 Laser light Timesharing unit 100...

Страница 111: ...ter a schedule signal 1 2 4 8 or 16 to select a SCHEDULE number is input The following timing chart shows the laser light output timing when the laser signal acceptance time is 16 ms and 4 ms 1 Laser...

Страница 112: ...Power is supplied and the POWER lamp comes on The screen of model name appears 2 While the model name screen is displayed for about 3 seconds press the corners of the touch panel display in the order...

Страница 113: ...art Operating Part Maintenance Part Appendixes 2 Changing the Acceptance Time 1 Press the setting buttons of 2 3 and 4 of SWITCH 3 to set them to ON For example to set the acceptance time to 4 ms set...

Страница 114: ...ED ON check Check that the HV ON lamp of the output unit lights when a high voltage is applied DIP switches are provided on the CPU board in the side surface and on the fiber breaking sensor board in...

Страница 115: ...uble detecting cable is not connected Error No 32 FIBER SWITCH TROUBLE is displayed Set the fiber mount checking function after setting the fiber breakage detecting function in 1 3 Set the LED ON chec...

Страница 116: ......

Страница 117: ...and control by sending a command from the connected personal computer RS 485 CONTROL At PANEL CONTROL welding schedules are set by using the laser controller and laser light is output Operating Part M...

Страница 118: ...laser light is repeatedly output the repeated output is stopped Pin No 23 control switching of the EXT I O 1 connector is in a closed circuit a high voltage is supplied and the branch shutter is open...

Страница 119: ...nector Functions on page 129 Before turning on the power supply put pin No 23 control switching of the EXT I O 1 connector to an open circuit to invalidate external input signals As a result the contr...

Страница 120: ...dicated when the resistivity is 3 00 M cm or more WATER TEMPERATURE Indicates the secondary cooling water temperature status LOW Displayed at 24 C or less NORMAL Displayed at 25 C to 40 C After the po...

Страница 121: ...alue 60 and up slope 0 6 ms is explained below For how to set the output conditions for seam welding refer to Setting the output conditions for seam welding on page 83 1 Press the SCHED button to disp...

Страница 122: ...ng value 0 25 ms FLASH1 FLASH2 FLASH3 100 0 ms 5 Press the SLOPE setting button Enter the time TIME ms required for laser light to up slope get gradually stronger in FLASH1 by using the numeric keypad...

Страница 123: ...the number of outputs per second in REPEAT in the range of 000 to 500 pps pulse per second When 0 is set a single output is performed For setting the number of laser light outputs set it in SHOT in th...

Страница 124: ...anch shutters In this example set SHUTTER 1 to ON Branch shutter 1 is opened and the corresponding SHUTTER comes on 6 Press the CANCEL button The opening closing of the branch shutter is set and the w...

Страница 125: ...to display the MONITOR screen and check the laser output energy J and average power W of the output laser light 4 Stopping Laser Welding CAUTION During a laser light output or for 5 seconds immediate...

Страница 126: ...e case of an output of 270 W per delivery the time that allows the branch shutter to continuously receive laser light is 5 seconds The average power average value displayed on the MONITOR screen shoul...

Страница 127: ...ut signals EXTERNAL CONTROL output schedules are set by another method PANEL CONTROL RS 485 CONTROL in advance After that such control as schedule selection laser light output and emergency stop is ex...

Страница 128: ...ned the branch shutter is closed to cut off laser light The plug and case models of connector are as follows Connecter Plug Cover Manufacturer EXT I O 1 HDCB 37P 05 HDC CTH 10 HIROSE ELECTRIC CO LTD E...

Страница 129: ...er light Use the following product out of the attached connectors Plug Case Manufacturer HDCB 37P 05 HDC CTH 10 HIROSE ELECTRIC CO LTD 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25...

Страница 130: ...ed the laser beam is output Make sure that the circuit is left closed for at least the time set on the MEMORY SWITCH screen When the signal is input repeatedly make sure that the circuit is left open...

Страница 131: ...sed laser beam input unit 4 is selected and the unit becomes ready to project a laser beam 29 SCHEDULE 1 Select a registered SCHEDULE number by combining schedule signal inputs 1 2 4 8 and 16 For how...

Страница 132: ...e of HIGH and LOW set on the MONITOR screen the circuit is closed for 40 ms 6 Monitor trouble When the monitor value of laser energy is out of the range of HIGH and LOW set on the MONITOR screen the c...

Страница 133: ...ght can be output from input unit 1 18 Timesharing unit 2 Enabled only when the branch shutter is put under independent control When the section between this pin and COM is put in a closed circuit tim...

Страница 134: ...ter 3 Open While branch shutter 3 is open this Pin 4 COM circuit closes internally 5 Branch Shutter 4 Open While branch shutter 4 is open this Pin 5 COM circuit closes internally 6 Unused Do not conne...

Страница 135: ...in an emergency stop the section between pin No 1 and pin No 6 is put in an open circuit 7 When the section between Pin No 2 and Pin No 7 is put in an open circuit the operation of the laser is stoppe...

Страница 136: ...n No 2 is put an open circuit the branch shutter is closed 2 When the section between 2 pins of this connector is opened by operating the external interlock the resonator shutter and the branch shutte...

Страница 137: ...Do not use this power supply in any case except for input signals 10k 10k 10k 10k 10k 10k 24V DC 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 15 16 17 18 19 20 21 22 23 24...

Страница 138: ...External Power Source is Supplied 10k 10k 24V DC 14 15 16 17 18 31 32 33 34 0V OUT 24V OUT External signal source External signal COM Input COM 10k 10k 10k 10k 24V DC 14 15 16 17 18 31 32 33 34 0V OU...

Страница 139: ...ating of output 24 V DC 20 mA max The polarity may be positive or negative Inside of the laser EXT I O 1 Connector EXT I O 2 Connector 1 2 3 4 5 6 7 8 9 10 11 12 13 1 2 3 4 5 6 7 8 9 10 11 12 13 14 D...

Страница 140: ...it to turn ON the high voltage The capacitor can be charged in 31 sec max At completion of charging pin No 1 of the EXT I O 1 connector is put in a closed circuit and the signal Ready is returned from...

Страница 141: ...Y SWITCH screen from the INITIALIZE screen For details refer to Chapter 2 3 Changing the Acceptance Time for Laser Start Signal Schedule Signal on page 111 6 Outputting Laser Light 1 Put pin No 20 Las...

Страница 142: ...ser start of the EXT I O 1 connector in a closed circuit Laser light is output simultaneously from BEAM1 and BEAM2 The details are the same as Step 6 ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF O...

Страница 143: ...the following procedure 1 Adjust the workpiece and output unit positions to set an appropriate work distance distance between the workpiece and the output position 2 Put the section between pin No 22...

Страница 144: ......

Страница 145: ...CONTROL the original customer developed program is executed on the personal computer to set laser output schedules and read monitor data and various types of status PLC Programmable Logic Controller...

Страница 146: ...the Introduction Part Chapter 1 Options on page 27 Prepare the program and its development environment for laser control on the customer side Connect the shielded portion to FG frame ground inside th...

Страница 147: ...ous full duplex Transfer rate 9600 19200 38400bps Data type Start bit 1 Data bit 8 or 7 Stop bit 2 or 1 Parity bit Even odd none Character code ASCII Set the transfer rate data type and equipment No b...

Страница 148: ...for about 3 seconds press the corners of the touch panel display in the order shown in the figure above The INITIALIZE screen appears Unless the CONTROL keyswitch is OFF the INITIALIZE screen does no...

Страница 149: ...F OFF 9600 OFF ON 19200 ON OFF 38400 ON ON 9600 7 8 Unused In this example each item is set as shown below Switch No Setting Setting example 1 Data bit ON 7bit 2 Parity bit ON None 3 Parity mode OFF E...

Страница 150: ...reen is displayed for about 3 seconds press the corners of the touch panel display in the order shown in the figure above The INITIALIZE screen appears Unless the CONTROL keyswitch is OFF the INITIALI...

Страница 151: ...Laser to PC S T X data E T X B C C Or C H 1 C H 0 N A K The schedule No or data No is out of the range WS Setting the control method SCHEDULE No branch shutter etc PC to laser S T X C H 1 C H 0 W S S...

Страница 152: ...H 1 C H 0 N A K External communication control is not performed C1 SHOT COUNT reset command PC to laser S T X C H 1 C H 0 C 1 E T X B C C Laser to PC C H 1 C H 0 A C K Or C H 1 C H 0 N A K External co...

Страница 153: ...5 SEAM setting value SEAM ON OFF 76 SEAM setting value SHOT 01 to 10 77 SEAM setting value SHOT 11 to 20 78 SEAM setting value POWER 01 to 10 79 SEAM setting value POWER 11 to 20 SH1 SH0 Schedule No S...

Страница 154: ...10 77 SEAM setting value SHOT 11 to 20 78 SEAM setting value POWER 01 to 10 79 SEAM setting value POWER 11 to 20 95 Laser power monitor Shot count Good count average 00 Laser power monitor Energy num...

Страница 155: ...ITIALIZE screen Coolant temperature low alarm 00 99 1 C 05 Coolant resistivity 000 999 0 01M 84 Schedule Settings for both FIX and FLEX Data No Item Data Range 01 FORM on the SCHEDULE screen Selection...

Страница 156: ...s x0 01ms 04 POINT 04 TIME on the SCHEDULE screen 000 999 0 1ms x0 01ms 05 POINT 05 TIME on the SCHEDULE screen 000 999 0 1ms x0 01ms 06 POINT 06 TIME on the SCHEDULE screen 000 999 0 1ms x0 01ms 07 P...

Страница 157: ...OWER on the SCHEDULE screen 0000 2000 0 1 10 POINT 10 POWER on the SCHEDULE screen 0000 2000 0 1 11 REFERENCE VALUE on the SCHEDULE screen Approximate laser output energy of the set waveform 0000 9999...

Страница 158: ...n the SEAM screen 0000 9999 04 POINT 14 SHOT on the SEAM screen 0000 9999 05 POINT 15 SHOT on the SEAM screen 0000 9999 06 POINT 16 SHOT on the SEAM screen 0000 9999 07 POINT 17 SHOT on the SEAM scree...

Страница 159: ...utputs until the present 000000000 999999999 02 GOOD COUNT on the MONITOR screen Number of outputs of appropriate energy 000000000 999999999 03 AVERAGE on the MONITOR screen Average power of output la...

Страница 160: ...width is 10 1 to 20 0 ms a measured value is sent at intervals of 0 20 ms When the pulse width is 20 1 to 40 0 ms a measured value is sent at intervals of 0 40 ms When the pulse width is 40 1 to 80 0...

Страница 161: ...be set from the personal computer is 0 and 2 If another value or space is set the control method cannot be changed It is impossible to set Control by external input output signals or Maintenance mode...

Страница 162: ...ent status kept s8 Unused fixed to s9 Unused fixed to mon Automatic laser power monitor value transmission 0 OFF 1 ON Current status kept Each time the flashlamp comes on 00 Laser Power Monitor Energy...

Страница 163: ...units digit SH1 SH0 Schedule No SH1 tens digit SH0 units digit cnt Control method 0 Control by control panel 1 Control by external input output signals Output schedules are set on the laser controlle...

Страница 164: ...ng number 5 Control by external input output signals Output schedules are set on the personal computer m1 Timesharing unit 1 0 OFF 1 ON m2 Timesharing unit 2 0 OFF 1 ON m3 Timesharing unit 3 0 OFF 1 O...

Страница 165: ...en in any other control method Stopping an Error Signal Output The command code C0 to stop an error signal output is explained below CH1 CH0 Equipment No CH1 tens digit CH0 units digit ACK or NAK The...

Страница 166: ...communication control RS 485 CONTROL mode It returns a NAK when in any other control method Reading Error No at Occurrence of Trouble The command code RT to read error No at occurrence of trouble is e...

Страница 167: ...igh temperature of coolant 42 11 Low temperature of coolant 43 12 Low flow rate of coolant 44 External interlock activated 13 Low resistivity of coolant 45 Not charged 14 Simmer trouble 46 Power monit...

Страница 168: ......

Страница 169: ...and the measured values of the MONITOR screen can be printed 1 Printing Set Values If the power supply is OFF turn ON the MAIN SWITCH switch and then turn ON the CONTROL keyswitch When one of the SCHE...

Страница 170: ...1A 1 Printing Set Values 3 Executing Printing 1 Press the SCHEDULE button The output schedules of the specified SCHEDULE are printed Example Example FORM FIX fixed waveform setting FORM FLEX flexible...

Страница 171: ...light actually After making sure that the measured waveform is displayed perform the following operations 1 Displaying the PRINTOUT Screen 1 Press the PRINT button The PRINTOUT screen appears 2 Execu...

Страница 172: ...r perform the following operations 1 Displaying the PRINTOUT Screen 1 Press the PRINT button The PRINTOUT screen appears 2 Specifying SCHEDULE 1 Press the PRINTOUT SCHEDULE setting button Enter the SC...

Страница 173: ...Maintenance Part...

Страница 174: ......

Страница 175: ...enance must put on protective glasses CAUTION Use our genuine maintenance parts For defect caused by non genuine maintenance parts or use of non genuine maintenance parts the repair is charged even if...

Страница 176: ...3 years Replace O ring for chamber cover G240 3 years Replace O ring for rod holder P12 5 3 years Replace O ring for rod ML 2550A S 10 3 years Replace ML 2551A S 8 O ring for electrode P8 3 years Repl...

Страница 177: ...of the lamp electrode tends to be deteriorated earlier Also the lamp electrode is deteriorated earlier when the lamp is used with nearly maximum output energy Therefore the number of flashes may becom...

Страница 178: ...7 mm spanners screwdriver and bucket container to receive water Operating Procedure 1 Remove the solenoid valve cover on the rear surface of the main unit and pull out the solenoid valve 2 Turn off th...

Страница 179: ...ater When the laser welder must be moved or transferred or its operation is stopped over one month drain the primary cooling water For changing the ion exchange resin for repacking changing the ion ex...

Страница 180: ...Remove the solenoid valve plug B portion in the previous figure and apply clean compressed air at 0 3 MPa approx 3 kgf cm2 into the pipe to expel the remaining water in the pipe forcedly 5 Return the...

Страница 181: ...r from the cooling water tank to make the tank empty For moving or transporting the laser welder and stopping it over one month make the cooling water tank empty Item required Water feed pump and buck...

Страница 182: ...e without being exposed to direct sunlight if possible Do not freeze the ion exchange resin to avoid lowering its performance Item required Ion exchanger mounting removing tool ion exchange resin for...

Страница 183: ...ed Immediately after the package is opened put the ion exchange resin into the ion exchanger and return dip it into the cooling water tank Take care not to spill the ion exchange resin Wipe off the io...

Страница 184: ...n 2 Put cooling water up to the line under HIGH of the water level label with the attached water feed pump 3 Float the floating panel on the water surface in the tank as it was and install the lid of...

Страница 185: ...r resulting in a failure Item required Secondary cooling water 18 liters water feed pump and water filter new product 1 Draining the Secondary Cooling Water 1 Open the lid of the cooling water tank an...

Страница 186: ...hod refer to page 179 to page 181 2 Draining Water from the Laser Chamber 1 Open the lamp replacing cover and remove the top lid of the laser chamber to drop the water in the chamber into the cooling...

Страница 187: ...kgf cm2 or less from the hole of the removed tube to drain the remaining water from the tube For installing and removing the tube refer to the next item 4 After draining all the water return the drain...

Страница 188: ...dapter until the mark reaches the release ring Pull the tube lightly to make sure it will not come out How to remove the tube Push the tube to the bottom of the adapter Pull out the tube straight with...

Страница 189: ...ser and wait for at least 5 minutes Item required Gloves vinyl clean cloth alcohol Phillips screwdriver ball point screwdrivers 2 5 mm 4 mm and 5 mm and flashlamp new product 1 Removing the Laser Cham...

Страница 190: ...ube Put the removed top lid reflector and other parts of the laser chamber on a clean cloth without allowing oil and dust to sticking on them Notes Handle the laser chamber with extreme care to void a...

Страница 191: ...e so that the cable may not return to the original form Adjust the cable bending status so that the solderless terminal may come to the lamp fixing screw position when it is put into the laser chamber...

Страница 192: ...the MAIN SWITCH switch immediately In 5 minutes or more wipe out leaked water and remove the cause for water leakage Then operate the cooler again to make sure that no water leakage occurs When the CO...

Страница 193: ...e YAG laser optical axis incident adjustment is required For the incident beam adjusting method contact us for information Note Use an optical fiber specially intended for incident beam adjustment If...

Страница 194: ...ber is rubbed hard this will result in a flaw Be careful about it Cleaning the Optical Parts The optical parts such as mirror and lens are delivered in a completely adjusted condition If these parts a...

Страница 195: ...ions for battery disposal because Lithium Battery contains dangerous materials Item required Phillips screwdriver and lithium battery CR2450 At battery replacement the registered output schedule data...

Страница 196: ...air filter at this portion every week Item required Phillips screwdriver Operating Procedure 1 Remove the filter retainer from the rear 2 Take out the filter and wash it in tap water Then dry the air...

Страница 197: ...have any unclear point contact the distributor or us for information When there is any related page in this Operation Manual the reference page is shown High voltage State of high voltage doesn t chan...

Страница 198: ...ute is abnormal 09 TEMP ERROR AT BODY OR OSCILLATOR OFF ON Overheating occurs in the discharge resistor provided in the main unit or the temperature in the oscillator resonator shutter or branch shutt...

Страница 199: ...is moving Extend the time from input of resonator shutter operating signal to input of laser start signal If the trouble will continue even after the above measures consult us 19 20 21 22 BRANCH SHUTT...

Страница 200: ...lose it and turn on the TROUBLE RESET input to turn off the TROUBLE output and fault code indication Refer to Operation for Closing Interlock on page 202 45 LASER START IS NOT READY ON A start signal...

Страница 201: ...iorated or low power and high repetition are set in a schedule Check and review the review the setting condition If the trouble will continue even after the above measures consult us 54 DEIONIZE CAUTI...

Страница 202: ...the setting is adjusted optical axis of resonator may have been dislocated For adjusting the axis consult us Laser output decreases though monitor displays normal value When welding is not performed o...

Страница 203: ...Appendixes...

Страница 204: ......

Страница 205: ...current of 50 A or more for 220 V or 30 A or more for 380 V which is applicable to harmonics and surges Ground Class D ground resistance 100 max for 220 V Class C ground resistance 10 max for 380 V C...

Страница 206: ...re diameter Minimum bending radius 0 3 0 4mm 100mm 0 6mm 150mm 0 8mm 200mm 1 0mm 250mm Standard Values of Maximum Incident Laser Energy and Power of the Optical Fiber The following table shows the sta...

Страница 207: ...L 2550A 2551A Dimensional Outline Drawings Unit mm INLET OUTLET Introduction Part Operating Part Maintenance Part Appendixes Installation and Preparation Part Rear side view Top view Front view Right...

Страница 208: ...m rated output 400 W 300 W Maximum output energy 80 J P Pulse width 10 ms 50 J P Pulse width 10 ms Maximum peak power 8 kW 5 kW Pulse width Standard 0 3 to 100 0 ms 0 1 ms steps Fine setting 0 25 to 5...

Страница 209: ...ut 209 ML 2550A 2551A ML 2551A 0 50 100 150 200 250 300 350 0 1 2 3 4 5 1ms 2ms 3ms Introduction Part Operating Part Maintenance Part Appendixes Installation and Preparation Part Peak power kW Upper l...

Страница 210: ...EXTERNAL CONTROL 2 timesharings of 2 powersharing deliveries Operation by external input signals EXTERNAL CONTROL Repeated operation EXTERNAL CONTROL Repeated operation 25 pps or more EXTERNAL CONTRO...

Страница 211: ...Time required for the end signal to be output after a laser output 4 40ms Time required for outputting a signal to indicate whether the laser energy is within the set upper limit value HIGH and lower...

Страница 212: ...whether the laser energy is within the set upper limit value HIGH and lower limit value LOW of monitor output In 2 and 4 the acceptance time is 16 ms but can be changed to 0 1 4 0 or 8 0 ms on the MEM...

Страница 213: ...value HIGH and lower limit value LOW of monitor output In 2 and 4 the acceptance time is 16 ms but can be changed to 0 1 4 0 or 8 0 ms on the MEMORY SWITCH screen Control Changeover Input External In...

Страница 214: ...uired for outputting a signal to indicate whether the laser energy is within the set upper limit value HIGH and lower limit value LOW of monitor output High Voltage ON Output Ready Output Schedule 1 I...

Страница 215: ...e Shutter operation time 3 2ms min Monitor error output time Minimum error output time for 500 pps Introduction Part Operating Part Maintenance Part Appendixes Installation and Preparation Part 2 High...

Страница 216: ...P 88 C COM Common Common line This means a connecting point where the multiple points are connected to the same common point The electric circuit includes an A contact B contact and Common The common...

Страница 217: ...th sides in two way communication The data transfer system of this laser is an asynchronous full duplex system P 147 G GI Optical fiber type Abbreviation of Graded Index The GI type means one of multi...

Страница 218: ...round N NAK Control code that is used for communication between computers Negative response that is sent from computer of the transmission destination to the transmission source Abbreviation of Negati...

Страница 219: ...the REMOTE INTERLOCK connector is connected to the door of the room so that laser light may be shut off when the door is opened P 128 Resistivity Electric resistance generally used as a scale to indic...

Страница 220: ...his current is mainly used for a power of business use Timesharing Laser light delivery specification When the incorporated timesharing unit is operated laser light is output to a single optical fiber...

Страница 221: ...POWER 000 200 0 COOL1 TIME 00 0 99 9 ms FLASH2 TIME 00 0 99 9 ms POWER 000 0 200 0 COOL2 TIME 00 0 99 9 ms FLASH3 TIME 00 0 99 9 ms POWER 000 0 200 0 SLOPE TIME 00 0 99 9 ms PEAK POWER ML 2550A ML 25...

Страница 222: ...27 28 29 30 31 SLOPE TIME 00 0 99 9 ms FLASH1 TIME 00 0 99 9 ms POWER 000 0 200 0 COOL1 TIME 00 0 99 9 ms FLASH2 TIME 00 0 99 9 ms POWER 000 0 200 0 COOL2 TIME 00 0 99 9 ms FLASH3 TIME 00 0 99 9 ms PO...

Страница 223: ...OWER 000 0 200 0 POINT 06 TIME 00 0 99 9 ms POWER 000 0 200 0 POINT 07 TIME 00 0 99 9 ms POWER 000 0 200 0 POINT 08 TIME 00 0 99 9 ms POWER 000 0 200 0 POINT 09 TIME 00 0 99 9 ms POWER 000 0 200 0 POI...

Страница 224: ...POINT 16 TIME 00 0 99 9 ms POWER 000 0 200 0 POINT 17 TIME 00 0 99 9 ms POWER 000 0 200 0 POINT 18 TIME 00 0 99 9 ms POWER 000 0 200 0 POINT 19 TIME 00 0 99 9 ms POWER 000 0 200 0 POINT 20 TIME 00 0...

Страница 225: ...ER 000 150 0 POINT 03 SHOT 0000 9999 POWER 000 0 150 0 POINT 04 SHOT 0000 9999 POWER 000 0 150 0 POINT 05 SHOT 0000 9999 POWER 000 0 150 0 POINT 06 SHOT 0000 9999 POWER 000 0 150 0 POINT 07 SHOT 0000...

Страница 226: ...9999 POWER 000 0 150 0 POINT 12 SHOT 0000 9999 POWER 000 0 150 0 POINT 13 SHOT 0000 9999 POWER 000 0 150 0 POINT 14 SHOT 0000 9999 POWER 000 0 150 0 POINT 15 SHOT 0000 9999 POWER 000 0 150 0 POINT 16...

Страница 227: ...1 Connector 130 Input Pins of EXT I O 2 Connector 133 Output Pins of EXT I O 1 Connector 132 Output Pins of EXT I O 2 Connector 134 PLC 127 REMOTE INTERLOCK Connector 31 136 F fade function 83 Fiber...

Страница 228: ...age for accessories 24 PANEL CONTROL 59 86 password 94 PASSWORD Screen 71 94 PEAK POWER 65 121 PLC 127 POINT 66 POSITION AUTO OFF 73 Power input terminals 47 POWER Lamp 33 Power Monitor Unit 35 powers...

Страница 229: ...een 86 SWITCH 1 75 SWITCH 2 76 SWITCH 3 76 SWITCH 4 76 SWITCH 5 77 SWITCH 6 77 T timesharing 22 104 Timesharing unit 35 104 106 Touch Panel 62 TROUBLE RESET 64 V VALUE CHANGE 95 W Warning Danger Label...

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