Amada ML-2050A-CE Operation Manual
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Amada ML-2050A-CE Operation Manual

Yag laser welder
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YAG LASER WELDER
2050A
ML-
-CE
2051A
2150A
OPERATION MANUAL
AA06OM1170500-19

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  • Page 1 Original instructions YAG LASER WELDER 2050A 2051A 2150A OPERATION MANUAL AA06OM1170500-19...

  • Page 2: How To Use This Document

    How to Use This Document ATTENTION In this manual, ML-2050A denotes ML-2050A-CE; ML-2051A, ML-2051A-CE; and ML-2150A, ML-2150A-CE. Thank you for purchasing our YAG Laser Welder ML-2050A/2051A/2150A. This operation manual explains its method of operation and precautions for use. Before using, read this operation manual carefully; after reading, save it in a proper place for your future reference.

  • Page 3: Table Of Contents

    Contents How to Use This Document ..........2 For Use in Safety .
  • Page 4 Operating Part Chapter 1 Control Method, and Start and Stop . . . . . . . . . . . . . . . . . . . . . 51 1.
  • Page 5 Reading the Control Method, SCHEDULE No., Branch Shutter, etc..133 Reading the Timesharing Unit Status ......134 Starting a Laser Light Output .

  • Page 6: For Use In Safety

    For Use in Safety For Use in Safety Safety Precautions Before using, read "Safety Precautions" carefully to understand the correct method of use . These precautions are shown for safe use of our products and for prevention of damage or injury to operators or others. Be sure to read each of them, since all of them are important for safety.
  • Page 7 For Use in Safety WARNING Wear protective glasses . Be sure to wear protective glasses having an optical density of at least 7 while using the Laser. Even if you wear them, you may lose your sight if the laser beam enters your eyes directly through protective glasses. Protective glasses attenuates the laser beam, but does not block it.
  • Page 8 For Use in Safety CAUTION Do not splash water on the Laser . Water splashed over the electric parts, can cause electric shock and short circuits. Use proper tools (wire strippers, pressure wire connectors, etc .) for termination of the connecting cables . Do not cut the wire conductor.

  • Page 9: Precautions For Handling

    Precautions for Handling Precautions for Handling Laser Safety Supervisor ⇒ Appoint a safety supervisor for all laser work. The appointed safety supervisor must have sufficient knowledge and experience regarding both lasers and laser work. ⇒ The supervisor must control the keyswitch of the Laser, and must be responsible for instructing operators in safety aspects of the Laser as well as directing the laser work.

  • Page 10: For Transportation

    Precautions for Handling For Transportation When transporting the laser, observe the following precautions to avoid hazards . ⇒ Package the Laser when transporting it. ⇒ The worker must wear a helmet, safety shoes and gloves for safety. (Leather gloves are recommended.) ⇒...

  • Page 11: For Disposal

    Precautions for Handling 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 accordance with applicable laws and regulations. ML-2050A/2051A/2150A...

  • Page 12: Sticking Warning/Danger Labels

    DISCONNECT POWER AND WAIT 5MIN. BEFORE SERVICING 高圧危険 セーフティインタロックを解除すると 感電するおそれがあります。 また、電源切替後５分以内は 内部に絶対に触れないでください。 P-00374-001 MANUFACTURED BY: AMADA WELD TECH CO.,LTD. 95-3 FUTATSUKA NODA-CITY CHIBA 278-0016 JAPAN MODEL No. SERIAL No. LABEL MFG:MONTH , YEAR INPUT POWER VOLTS Phase 50/60Hz MAX. RMS AMPS MAX.
  • Page 13 IEC60825-1:2014 AVOID EXPOSURE-LASER RADIATION IS EMITTED FROM THIS APERTURE 被ばくを回避のこと - この 開口からレーザ放射が出る。 P-00377-001 MANUFACTURED BY: AMADA WELD TECH CO.,LTD. 95-3 FUTATSUKA NODA-CITY CHIBA 278-0016 JAPAN MODEL No. SERIAL No. LABEL MFG:MONTH , YEAR INPUT POWER VOLTS Phase 50/60Hz MAX. RMS AMPS MAX.
  • Page 14 Sticking Warning/Danger Labels EXPOSURE TO VISIBLE AND/OR INVISIBLE LASER RADIATION M AY O C C U R W H E N T H E I N T E R L O C K S W I T C H I S D E F E AT E D . A L I G H T E D L E D I N D I C AT E S I N T E R L O C K S W I T C H I S D E F E AT E D .

  • Page 17: Chapter 1 Overview Of The Yag Laser Welder

    1 . YAG Laser Chapter 1 Introduction Part ● Overview of the YAG Laser Welder 1 . YAG Laser Laser means the equipment to generate powerful light by amplifying light (electromagnetic wave) or means this light itself. Laser can be classified into various types by light generating material.

  • Page 18: Mechanism Of The Yag Laser

    2 . Mechanism of the YAG Laser 2 . Mechanism of the YAG Laser The YAG Laser for welding consists of a power supply, cooler, oscillator, optical fiber, output unit, etc. Laser light can be transferred to a place remote from the main unit by optical fiber, so that only the optical fiber and output unit can be mounted in the manufacturing line for welding.

  • Page 19: Functions Of The Ml-2050A/2051A/2150A

    3 . Functions of the ML-2050A/2051A/2150A 3 . Functions of the ML-2050A/2051A/2150A ⇒ Laser power feedback control and optional waveform control functions ■ The Laser can handle a wide variety of workpieces. Up to 32 different settings for weld schedules using waveform control are available. ■...

  • Page 20: Product Composition

    4 . Product Composition 4 . Product Composition Packaging The product is divided into the main unit and accessories and these are packed in 2 packages. The respective dimensions and mass are as follows. Mass (including Dimensions packaged products) Package for main unit Approx.
  • Page 21 4 . Product Composition Part name Model No . Q’ty P-1213 Danger, warning, caution labels P-1215 L-07002-001 Operation manual AS1170499(OM1170500) Power cable A-03651-002 Main Unit, Optical Fiber, and Output Unit This product is used in combination with the optical fiber and output unit as shown below.

  • Page 22: Options

    4 . Product Composition Options The following goods are options separately sold. Purchase them as required. Part name Model No . Fiber scope FOS-04 Laser controller MLE-115A-02-00 C18-HD15M-HD15F-10 Circuit cable 15 m C18-HD15M-HD15F-50 Printer BL2-58SNWJC RS-232C/RS-485 conversion adapter MSC-08S AC adapter for RS-232C/RS-485 conversion Exclusively for MSC-08 adapter RS-485 cable, 10 m...
  • Page 23 4 . Product Composition Laser Controller This laser controller is used to operate the laser in a place remote from the main unit. Connect this controller to the LASER CONTROLLER connector or the PANEL CONTROL connector of the main unit by using a 3 m or 15 m circuit cable. Purchase it as required.
  • Page 24 4 . Product Composition 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 monitor screen can be printed out. Purchase the printer as required. Rear side Top side IF connector...

  • Page 25: Chapter 2 Name And Functions Of Each Section

    1 . Name and Function of Each Section on the Front Side Chapter 2 Introduction Part ● Name and Functions of Each Section 1 . Name and Function of Each Section on the Front Side Front Cover Section This section explains each section of the front cover of the main unit . Function of Each Section on the Front Cover (1) MAIN POWER Turns ON and OFF the power supply.

  • Page 26: Inside Of The Front Side

    1 . Name and Function of Each Section on the Front Side Inside of the Front Side The front door is opened to perform maintenance . Each section of the inside is explained below . (12) EMERGENCY STOP EXT.I/O(2) EXT.I/O(3) (13) SIGNAL EXT.I/O(1)
  • Page 27 1 . Name and Function of Each Section on the Front Side (7) RS-485 (2) This connector is used to connect the laser to a personal computer or printer. Connector (8) REMOTE Connect it to the Remote Interlock for emergency stop. When disconnected, the resonator shutter and the branch shutters close INTERLOCK to block the laser beam.

  • Page 28: Name And Function Of Each Section On The Top Side

    2 . Name and Function of Each Section on the Top Side 2 . Name and Function of Each Section on the Top Side Top Cover Section This section explains each section of the top cover of the main unit . CONTROL POWER HIGH VOLTAGE...

  • Page 29: Control Panel

    2 . Name and Function of Each Section on the Top Side (8) HIGH VOLTAGE Indicates that high voltage is being supplied to the laser oscillator. Lamp (9) READY Lamp Lights up when charging of the capacitor bank has been completed. (10) SHUTTER Lamp Stay(s) on while some (one) of the branch shutters 1 to 3 are (is) open.

  • Page 30: Laser Oscillator Section

    2 . Name and Function of Each Section on the Top Side Laser Oscillator Section In the following, the laser oscillator section that is provided inside the top cover is explained . (1) (2) (10) Inside of the branch section Function of Each Section on the Laser Oscillator (1) Power Monitor Detects the YAG laser beam and measures its power.
  • Page 31 2 . Name and Function of Each Section on the Top Side (8) Timesharing Mirror to reflect the laser light. This optical-path-switching mirror directs the laser light to the selected optical fiber. Unit (Only for timesharing version) (9) Branch Shutter When closed, the laser light is blocked not to output.

  • Page 32: Name And Function Of Each Section On The Lateral Side And Rear Side

    3 . Name and Function of Each Section on the Lateral Side and Rear Side 3 . Name and Function of Each Section on the Lateral Side and Rear Side This section explains each section on the lateral side and rear side . Side view Rear view Side view...

  • Page 35: Chapter 1 Installation

    1 . Installation Place Chapter 1 Installation and Preparation Part ● Installation This chapter explains the installation place and schedules of the laser welder, and precautions about cooling capacity and room temperature . ⇒ When installing the laser welder, our engineer will take charge of adjustments. Accordingly, this Operation Manual does not describe the adjusting method at a startup.
  • Page 36 1 . Installation Place 50mm 50mm CONTROL POWER CONTROL POWER HIGH VOLTAGE HIGH VOLTAGE READY READY SHUTTER 1 CURSOR SHUTTER 1 CURSOR LASER LASER START/STOP START/STOP TROUBLE MENU TROUBLE MENU CONTROL POWER SHUTTER 2 SHUTTER 2 RESET RESET HIGH VOLTAGE SHUTTER 3 ENTER SHUTTER 3...

  • Page 37: Environment Suitable For Installation And Precautions

    1 . Installation Place Environment Suitable for Installation and Precautions ⇒ In laser processing, dust and fumes are generated from workpiece. Depending on the kind of workpiece, they may adversely affect a human body. Also, dust and fumes from workpiece may cause staining and burning of optical parts and lower the laser output.

  • Page 38: Cooling Water

    2 . Cooling Water 2 . Cooling Water Cooling water is used to cool the flashlamp and YAG rod provided in the laser chamber in the laser oscillator section. Use deionized water or purified water. Tap water, industrial water, ground water, or ultra pure water (16 MΩ·cm minimum resistivity) may cause corrosion or clogging, resulting in fault of the equipment.

  • Page 39: Precautions On Cooling Capacity And Room Temperature

    2 . Cooling Water Precautions on Cooling Capacity and Room Temperature The following graph represents the relation between the duty cycle and the cooling capacity (upper limit of room temperature). If the value exceeds the cooling capacity line, error No.10 HIGH TEMPERATURE OF COOLANT occurs.

  • Page 41: Chapter 2 Connections And Preparations Of Each Section

    1 . Connecting the Power Supply Chapter 2 Installation and Preparation Part ● Connections and Preparations of Each Section 1 . Connecting the Power Supply CAUTION Your qualified electrician must carry out the electrical connection to main power supply . (Also follow your local accident prevention regulations, such as the German Regulation, BGVA2 .) CAUTION For the power supply side, we earnestly recommend using a leakage breaker with...

  • Page 42: Preparing Cooling Water

    2 . Preparing Cooling Water 2 . Preparing Cooling Water CAUTION Use deionized water or purified water for cooling water. Using tap water, industrial water, ground water, or ultra pure water (Resistivity: 16 MΩ-cm or more) causes corrosion or clogging, resulting in a failure . Item required Cooling water (6 liters), water feed pump Operating Procedure...

  • Page 43: Connecting The Optical Fiber

    3 . Connecting the Optical Fiber 3 . Connecting the Optical Fiber This section explains the method of connecting the optical fiber. In this laser, a high-precision type optical fiber is adopted. Once the incident optical axis is adjusted, this optical axis does not need to be adjusted again after the fiber is mounted.
  • Page 44 3 . Connecting the Optical Fiber Standard Values of Maximum Incident Laser Energy and Power of the Optical Fiber The following table shows the standard values of maximum laser energy and power that can be input into the optical fiber. Take care not to exceed these values when using the optical fiber.
  • Page 45 3 . Connecting the Optical Fiber (5) Turn the outer-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. Laser Beam Input Unit Ring Turn Plug Turn the outer ring of the plug...

  • Page 46: Connecting The Laser Controller (Option)

    4 . Connecting the Laser Controller (Option) 4 . Connecting the Laser Controller (Option) When using the laser controller as a remote controller, connect the cable. CAUTION Be sure to turn OFF the power supply before starting to connect the laser controller . Item required Laser controller and circuit cable Operating Procedure...

  • Page 47: Connecting The External Communication Conversion Adapter (Option)

    5 . Connecting the External Communication Conversion Adapter (Option) 5 . Connecting the External Communication Conversion Adapter (Option) To perform laser welding by external communication control (RS-485 CONTROL) using Control unit provided with RS-232C such as personal computer, the optional external communication conversion adapter "RS-232C/RS-485 conversion adapter"...

  • Page 51: Chapter 1 Control Method, And Start And Stop

    1 . Control Method Chapter 1 Operating Part ● Control Method, and Start and Stop 1 . Control Method This section explains the control method for the laser . The following 3 control methods are available, namely, control from the control panel or laser controller (option) (PANEL CONTROL), control by external input/output signals connecting the PLC (*) to the laser (EXTERNAL CONTROL), and control by sending commands from the personal computer or the like (RS-485 CONTROL).

  • Page 52: Start And Stop

    2 . Start and Stop 2 . Start and Stop This section explains the methods of starting and stopping the laser . How to Start the Laser Operating Procedure (1) Turn ON the MAIN POWER switch. (2) Turn ON the CONTROL keyswitch. (3) Select a control method as required and perform laser welding.

  • Page 53: Chapter 2 Various Settings

    1 . Setting Welding Schedules Chapter 2 Operating Part ● Various Settings 1 . Setting Welding Schedules This section explains the method of setting various laser welding schedules by using the control panel . The set schedules can be protected so that they cannot be changed .
  • Page 54 1 . Setting Welding Schedules SCHEDULE Screen On the SCHEDULE screen, the laser light output schedules and SCHEDULE numbers are set. If a registered SCHEDULE number is entered, the corresponding output schedules can be called. The setting items of laser output time and laser output value are different between fixed waveform (FIX) and flexible waveform (FLEX).
  • Page 55 1 . Setting Welding Schedules PEAK Sets the peak value of laser output (value when "FLASH1" to"FLASH3" are 100%). Regarding the actual laser output value, set the ratio (%) to the peak value supposing that the set peak value is the reference value (100%). <Note>...
  • Page 56 1 . Setting Welding Schedules POSI . Sets the guide light blinking status (POSITION BLINK) or continuous lighting to ON or OFF. BLINK When POSI.BLINK is set to ON with the guide light ON, the guide light blinks. If it is set to OFF, the guide light is put to a continuous ON status.
  • Page 57 1 . Setting Welding Schedules Sets the high voltage (HIGH VOLTAGE) to ON or OFF. When HV is set to ON, the HIGH VOLTAGE lamp comes on. When it is set to OFF, no high voltage is supplied and no laser light is output. POSI .BLINK Sets the guide light blinking status (POSITION) or continuous lighting to ON or OFF.
  • Page 58 1 . Setting Welding Schedules GOOD COUNT Displays the appropriate number of laser light outputs. The appropriate number of outputs means the laser light output within the allowable energy range set at "HIGH" and "LOW." To reset the display to 0, perform a reset operation on the STATUS screen. LAMP INPUT PWR Displays the flashlamp power.
  • Page 59 1 . Setting Welding Schedules NETWORK# Sets the equipment No. in the range of #00 to #15 before performing remote operations from the personal computer by external communication function. TEMP CONT Sets the control temperature of cooling water. Sets the alarm temperature range by lower limit value (L) and upper limit value (H). ALARM Usually, it is not necessary to change the set value.
  • Page 60 1 . Setting Welding Schedules Switches the transfer speed of external communication data type assigned to 1 to 8 of "SW (SWITCH) 2" to ON or OFF. SW2-1 1: Switches the data bit length. OFF: 8 bits/ON: 7 bits SW2-2 2: Sets whether a parity bit exists or not.

  • Page 61: Setting Laser Light Output Schedules (Schedule Screen)

    1 . Setting Welding Schedules Setting Laser Light Output Schedules (SCHEDULE Screen) This section explains the how to set the SCHEDULE screen . On this screen, the peak value, output time, and output value of laser light and SCHEDULE number are set . ⇒...
  • Page 62 1 . Setting Welding Schedules <No te> Set the laser output time so as to result in the following value . 0.2 ms ≤ "FLASH1" + "FLASH2" + "FLASH3" ≤ 10.0 ms (6) Move the cursor to " k SLOPE" and press the ON or OFF key to set the time require for laser light to up-slope to FLASH1 (to become gradually stronger).
  • Page 63 1 . Setting Welding Schedules (2) Check the output energy displayed in " ." ⇒ In " ", the forecast value of laser output energy based on the set output schedules is displayed. This value is a little different from the actually measured value (measured value displayed on the POWER MONITOR screen) provided at laser welding.
  • Page 64 1 . Setting Welding Schedules (6) To perform multiple outputs for one second, move the cursor to "REPEAT" and set the number of laser light outputs in the range of 00 to 30 pps (pulse per second). ⇒ When 0 is set, a single output is performed. (7) To output laser output repeatedly, move the cursor to "SHOT"...

  • Page 65: Setting The Output Status (Status Screen)

    1 . Setting Welding Schedules Setting the Output Status (STATUS Screen) In the following, the method of setting the STATUS screen is explained . On this screen, check the displayed control method and the set the branch shutter at the output destination to OPEN . Set or reset the number of laser light outputs . ⇒...
  • Page 66 1 . Setting Welding Schedules Control by External Communication Control (RS-485 CONTROL) When a command to set a control method is sent from the personal computer connected to the main unit, external communication control is selected and "RS-485 CONTROL" is displayed in "-STATUS" on the STATUS screen. -STATUS [RS-485 CONTROL] 　 WATER 28˚C BEAM-1:OFF RESET SELECT PRESET...
  • Page 67 1 . Setting Welding Schedules Setting the Count-notification Function When "SHOT COUNT" (total number of laser light outputs) and "GOOD COUNT" (appropriate number of laser light outputs) that are displayed on the POWER MONITOR screen reaches the set number, a message is displayed. This function will be of assistance for maintenance or manufacturing control.

  • Page 68: Setting The Output Status Check Screen (Power Monitor Screen)

    1 . Setting Welding Schedules Setting the Protection of Optical Fiber The optical fiber is protected from overfill to the optical fiber. When the core diameter to be used is set, the maximum possible incident light to the optical fiber is calculated to limit the lamp input power.
  • Page 69 1 . Setting Welding Schedules (2) Press the ENTER key. The measured energy value of the last output laser light is displayed by the entered SCHEDULE number. -POWER MONITOR SCH.#02 :OFF WATER 28˚C 12.5J ENERGY HIGH 045.0J LOW 000.0J 12.5W AVERAGE LAMP INPUT PWR 050% SHOT COUNT 123456789...
  • Page 70 1 . Setting Welding Schedules (2) Press the ENTER key to definitively set the set numeric value. The set ratio of the upper limit value is registered. If this upper limit value is exceeded, a prompting screen for replacing the flashlamp is displayed. WATER 28˚C LAMP INPUT POWER LIMIT !! CHECK THE LAMPS !!

  • Page 71: Protecting Set Values (Password Screen)

    1 . Setting Welding Schedules Protecting Set Values (PASSWORD Screen) The method of protecting set values by setting the password is explained below . When the password is set and validated, set values are protected and cannot be changed by any person other than the supervisor . Displaying the PASSWORD Screen (1) Press the TROUBLE RESET key and the CURSOR key (r) simultaneously on one of the SCHEDULE screen, STATUS screen, and POWER MONITOR screen.
  • Page 72 1 . Setting Welding Schedules PASSWORD MODE WATER28˚C PASSWORD:[ **** ] CHANGE VALUE:ON NEW PASSWORD:[ **** ] RE-WRITE PASSWORD:[0000] ********** PASSWORD MISMATCH ********** HV:OFF POSI.BLINK:OFF POSITION:OFF Validating the Password (1) Move the cursor to "CHANGE VALUE" and press the OFF key. The password is validated and some of setting items are protected and become unchangeable.
  • Page 73 1 . Setting Welding Schedules The items that can be protected are as follows. Display Screen Item SCHEDULE SCH.# (Schedule number) Screen FORM (FIX/FLEX waveform switching) PEAK (Laser output peak value) REPEAT (Number of laser light outputs per second) SHOT (Total number of laser light outputs) SLOPE (Time for up-sloping to FLASH1) FLASH1 (Output time ms and output value % of the first laser) FLASH2 (Output time ms and output value % of the second laser)

  • Page 74: Switching The Accuracy Of The Measured Laser Energy Value (J) (Initial Screen)

    1 . Setting Welding Schedules Switching the Accuracy of the Measured Laser Energy Value (J) (INITIAL Screen) In the following, the method of switching the measurement accuracy of the laser energy value (J) is explained . Usually, this setting permits switching the measured value of 0 .1 J increments over to 0 .01 J increments, so that more minute welding work can be performed .
  • Page 75 1 . Setting Welding Schedules <Note> When the accuracy of the measured value is switched, the set values of SCHEDULE are initialized . To prevent misoperation, the setting cannot be changed unless No .8 of SW1 is set to ON . When the setting of No .6 of SW1 is changed and the ENTER key is pressed, the setting of No .8 of SW1 is returned to OFF .

  • Page 76: Switching The Pulse Width Setting Range (Initial Screen)

    1 . Setting Welding Schedules Switching the Pulse Width Setting Range (INITIAL Screen) In the following, the method of switching the pulse width setting range for laser light (laser output time ms) is explained . Usually, this setting permits switching the pulse width of 0 .1 ms step over to 0 .02 ms step, so that more minute welding work can be performed .
  • Page 77 1 . Setting Welding Schedules <Note> When the pulse width setting range is switched, the set values of SCHEDULE are initialized . To prevent misoperation, the setting cannot be changed unless No .8 of SW1 is set to ON . When the setting of No .7 of SW1 is changed and the ENTER key is pressed, the setting of No .8 of SW1 is returned to OFF .

  • Page 78: Setting The Laser Light Delivery

    2 . Setting the Laser Light Delivery 2 . Setting the Laser Light Delivery This laser can output single laser light to multiple optical fibers or to a single optical fiber by the functions of the built-in beamsplitter and timesharing unit . This section explains the sharing specifications of this laser.
  • Page 79 2 . Setting the Laser Light Delivery Single A single branch shutter is opened to output laser light only to a single optical fiber. Beamsplitter 100% Laser light Laser light is reflected on the beamsplitter Branch shutter 1 and transferred from opened branch shutter 1. 2-powersharing/3-powersharing Laser light is split according to the number of built-in branch shutters and then simultaneously output.

  • Page 80: Operating Branch Shutters On The Status Screen

    2 . Setting the Laser Light Delivery Operating Branch Shutters on the STATUS Screen In the following, the method of performing open/close operations for branch shutters on the STATUS screen . On the STATUS screen, perform open/close operations for branch shutters to transfer laser light.

  • Page 81: Controlling Branch Shutters Independently

    2 . Setting the Laser Light Delivery Controlling Branch Shutters Independently In the following, the method of setting branch shutters to independent control by setting DIP switches . ⇒ Usually, the sharing specification is changed by our engineer. When "BEAM-1" to "BEAM-3" are set to ON and the branch shutter is opened, the branch shutter and the timesharing unit are automatically operated to transmit laser light.
  • Page 82 2 . Setting the Laser Light Delivery -STATUS [PANEL CONTROL] 　 WATER 28˚C BEAM-1:OFF RESET SELECT PRESET BEAM-2:OFF "SHOT 123456789 123456789 BEAM-3:OFF "GOOD 123456789 123456789 MIRR-1:OFF MIRR-2:OFF FIBER:[SI] ø1.0mm HV:OFF POSI.BLINK:OFF POSITION:OFF Operating an Optional Branch Shutter (1) Set No.6, No.7, and No.8 of SW1 to ON and the branch shutters are put under independent control.

  • Page 83: Changing The Acceptance Time For Laser Start Signal/Schedule Signal

    3 . Changing the Acceptance Time for Laser Start Signal/Schedule Signal 3 . Changing the Acceptance Time for Laser Start Signal/ Schedule Signal This section explains how to change the acceptance time for the laser start signal and schedule signal to be input into the EXT .I/O (1) connector by setting the DIP switches provided in the side face of the main unit when EXTERNAL CONTROL is exerted by external input/output signals .
  • Page 84 3 . Changing the Acceptance Time for Laser Start Signal/Schedule Signal The 4 types of acceptance time of 1 ms, 4 ms, 8 ms, and 16 ms are available. At delivery, the acceptance time is set to 16 ms. To change this setting, switch the ON/ OFF status of No.1 and No.2 of SW4 as shown below.

  • Page 85: Setting The Function Of The Output Unit With Fiber Sensor (Option)

    4 . Setting the Function of the Output Unit with Fiber Sensor (Option) 4 . Setting the Function of the Output Unit with Fiber Sensor (Option) For using the output unit with fiber sensor (option), perform a setting to make the function effective by the DIP switches provided in the side face of the main unit.
  • Page 86 4 . Setting the Function of the Output Unit with Fiber Sensor (Option) Operating Procedure (1) Set the fiber breakage detecting function. Remove the side cover of the main unit and set No.3 of SW1 to ON. The fiber breakage detecting function is set. When optical fiber breakage or end face damage is detected during laser light output, Error No.38 to 40 FIBER SENSOR 1 to 3 TROUBLE is displayed.

  • Page 87: Chapter 3 Laser Welding By Control Panel (Panel Control)

    1 . Operation Flow Chapter 3 Operating Part ● Laser Welding by Control Panel (PANEL CONTROL) 1 . Operation Flow This section explains a laser welding operation flow by control panel. The following methods for laser welding operations are available: control from the control panel (PANEL CONTROL), control by external input/output signals from the connected PLC (Programmable Logic Controller) (EXTERNAL CONTROL), and control by sending a command from the connected personal computer (RS-485...

  • Page 88: Control Panel Functions

    2 . Control Panel Functions 2 . Control Panel Functions This section explains the functions of the control panel . At PANEL CONTROL, welding schedules are set by using the control panel keys and laser light is output by pressing the LASER START/STOP button. After the output, you can check the laser output energy on the POWER MONITOR screen.

  • Page 89: Operating Procedure

    3 . Operating Procedure 3 . Operating Procedure This section explains the operating procedure for laser welding to be controlled from the control panel . ⇒ For the details of welding schedule settings, refer to Chapter 2, "1. Setting Welding Schedules" on page 53. For connector functions, refer to Chapter 4, "3. Connector Functions"...
  • Page 90 3 . Operating Procedure How to See the Display Items WATER Indicates the cooling water temperature. Upon completion of SELF CHECK, a temperature measurement is started and the measured value is indicated. DEIONIZE Indicates the resistivity of cooling water. NOT READY: Indicated when the resistivity is below 3.00 MΩ·cm.
  • Page 91 3 . Operating Procedure Setting Output Schedules As an example, the procedure for setting SCHEDULE No.05, laser output peak value 2.50 kW, FLASH laser output time 3.6 ms/output value 80%, and up-slope 0.6 ms is explained below. (1) Press the MENU key to display the SCHEDULE screen. (2) Move the cursor to "-SCH.#"...
  • Page 92 3 . Operating Procedure <No te> Set "kSLOPE" so as to result in the following value . kSLOPE ≤ FLASH1 When setting "FLASH2" or "FLASH3", set the time required for laser light to down- slope (the laser output is gradually weaker) to FLASH . Set "mSLOPE" so as to result in the following value .
  • Page 93 3 . Operating Procedure (1) Press the MENU key to display the STATUS screen. When Pin No.23 (control switching) of the EXT.I/O (1) connector is put to an open circuit, the external input signals are invalidated and "PANEL CONTROL" is displayed in "-STATUS."...
  • Page 94 3 . Operating Procedure (6) Press the LASER START/STOP button. Laser light is output and the POWER MONITOR screen appears. (7) Check the laser output energy (J) and average power (W) of output laser light. -POWER MONITOR SCH.#05 :OFF WATER 28˚C 12.5J ENERGY HIGH 045.0J...

  • Page 95: Chapter 4 Laser Welding By External Input/ Output Signals (External Control)

    1 . Operation Flow Chapter 4 Operating Part ● Laser Welding by External Input/ Output Signals ( EXTERNAL CONTROL) 1 . Operation Flow This section explains an operation flow of laser welding by external input/ output signals (EXTERNAL CONTROL) . The following methods for laser welding operations are available: control from the control panel (PANEL CONTROL), control by external input/output signals from the PLC (Programmable Logic Controller) connected to the connector (EXTERNAL...

  • Page 96: Preparations For Operations

    2 . Preparations for Operations 2 . Preparations for Operations This section explains the devices and connectors required for laser welding by external input/output signals (EXTERNAL CONTROL) . Connect the PLC to the EXT.I/O (1), (2) or (3) and EMERGENCY STOP connectors provided in the front of the main unit to control the main unit by executing the program from the outside.

  • Page 97: Connector Functions

    3 . Connector Functions 3 . Connector Functions Pin Arrangement and Functions There are 4 connectors to be connected for the control by external input/output . This section explains the arrangement and functions of the respective pins . EXT .I/O (1) Connector (D-Sub 37 pin) The EXT .I/O (1) connector inputs welding schedules and inputs or outputs the start signal of guide light and laser light .
  • Page 98 3 . Connector Functions Input Pins of EXT .I/O (1) Connector ⇒ Supply power to pin No.16 and pin No.17 and put the section between pin No.23 and COM in a closed circuit. Pin No . Description 0 V OUT Power supply for external input signals.
  • Page 99 3 . Connector Functions Pin No . Description Unused Do not connect anything. SCHEDULE 1 SCHEDULE 2 Select a registered SCHEDULE number by combining schedule signal SCHEDULE 4 inputs 1, 2, 4, 8, and 16. For how to select a SCHEDULE number, refer to the following table.
  • Page 100 3 . Connector Functions Output Pins of EXT .I/O (1) Connector Pin No . Description Ready When the high voltage is turned ON and the capacitor is fully charged, this Pin 1–COM circuit is closed internally. High Voltage ON While the high voltage is supplied, this Pin 2–COM circuit is closed internally. Trouble If trouble arises, this Pin 3–COM circuit is opened internally until it is reset.
  • Page 101 3 . Connector Functions EXT .I/O (2) Connector (D-Sub 25 pin) The EXT .I/O (2) connector inputs and outputs control signals for the timesharing unit and branch shutter . ⇒ Use the following product out of the attached connectors. Plug Case Manufacturer HDBB-25P(05)
  • Page 102 3 . Connector Functions Pin No . Description Unused Do not connect anything. Unused Do not connect anything. Output Pins of EXT .I/O (2) Connector Pin No . Description Unused Do not connect anything. Branch Shutter 1 Open While branch shutter 1 is open, this Pin 2–COM circuit closes internally. Branch Shutter 2 Open While branch shutter 2 is open, this Pin 3–COM circuit closes internally.
  • Page 103 3 . Connector Functions EXT .I/O (3) Connector (D-Sub 25 pin) The EXT .I/O (3) connector inputs and outputs an emergency stop signal for the laser and inputs an external interlock signal . ⇒ Use the following product out of the attached connectors. Socket Case Manufacturer...
  • Page 104 3 . Connector Functions Output Pins of EXT .I/O (3) Connector Pin No . Description Emergency stop output 1 When the laser is put in an emergency stop, the section between pin No.9 and pin No.12 is put in an open circuit. Emergency stop output 2 When the laser is put in an emergency stop, the section between pin No.10 and pin No.11 is put in an open circuit.
  • Page 105 3 . Connector Functions EXT. I/O (3) connector Inside the laser User ESTOP Wiring ESTOP CH2 rtn ESTOP CH 1 rtn ESTOP CH 2 ESTOP CH 1 ESTOP Out 1a ESTOP Out 1b ESTOP Out 2a ESTOP Out 2b Interlock rtn 2 Interlock out 2 User Interlock Wiring (dry contact closure)
  • Page 106 3 . Connector Functions In this wiring example a Pilz PNOZ family safety relay module controls the Laser and interfaces two external emergency stop buttons. In this example the Pilz device would also control additional emergency stop functions outside of the Laser using expansion contacts.
  • Page 107 3 . Connector Functions EMERGENCY STOP Connector (D-Sub 9 pin) The EMERGENCY STOP connector inputs and outputs an emergency stop signal for the laser . ⇒ Use the following product out of the attached connectors. Plug Case Manufacturer HDEB-9P(05) HDE-CTH(10) HIROSE ELECTRIC CO., LTD.
  • Page 108 3 . Connector Functions REMOTE INTERLOCK Connector The REMOTE INTERLOCK connector closes the branch shutter and connects the interlock to cut off laser light in an emergency. ⇒ Use the following product out of the attached connectors. Plug Case Manufacturer 116-12A10-2AF10.5 TAJIMI ELECTRONICS CO., LTD.

  • Page 109: Example Connections Of External Input Signals

    3 . Connector Functions Example Connections of External Input Signals An example of external input signal connections of the EXT .I/O connector is explained below . When External Inputs are Contacts Inside of the laser　　　　　　 EXT.I/O (1) Connector D-Sub 37 pin 24V DC * +24 V 100 mA max.
  • Page 110 3 . Connector Functions When External Inputs are NPN Transistors 24V DC 0V OUT +24V OUT External signal source External signal COM Input COM When External Inputs are PNP Transistors 24V DC 0V OUT +24V OUT External signal source External signal COM Input COM When External Power Source is Supplied 24V DC...

  • Page 111: Example Connection Of External Output Signals

    3 . Connector Functions Example Connection of External Output Signals An example of external output signal connections of the EXT .I/O connector is explained below . Inside of the laser　　　 EXT.I/O (1) Connector D-Sub 37 pin READY High voltage on [HV-ON] TROUBLE Monitor normal [NORMAL] Monitor trouble [LOW/HIGH]...

  • Page 112: Programming

    4 . Programming 4 . Programming This section explains the precautions for programming laser welding by external input/output signals (EXTERNAL CONTROL) . The timing chart of the appendix shows the input signal length and input waiting time required to correctly operate the laser. Perform actual programming referring to this timing chart.
  • Page 113 4 . Programming Setting Output Schedules (SCH .#01) Control switching input (1) Set the SCHEDULE number by combining pin No.29 to pin No.33 of the EXT.I/O (1) connector. In this example, pin No.29 of the EXT.I/O (1) connector is put in a External input closed circuit for 16 ms or more to set SCH.#01.
  • Page 114 input Completion of charging SCHEDULE 1 input Over the time set by the DIP switch 4 . Programming 48 sec. max. SCHEDULE 2 Ready output input 4.0 ms, 8.0 ms, or 16.0 ms can be selected by setting the DIP switch on the CPU Over the time set by board.
  • Page 115 4 . Programming Making a Position Adjustment by Guide Light Make a position adjustment by guide light before welding according to 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 of the EXT.I/O (1) connector and COM in a closed circuit.

  • Page 117: Chapter 5 Laser Welding By External Communication Control (Rs-485 Control)

    1 . Operation Flow Chapter 5 Operating Part ● Laser Welding by External Communication Control RS-485 CONTROL) 1 . Operation Flow This section explains an operation flow of a laser welding by external communication control (RS-485 CONTROL) . The following methods for laser welding operations are available: control from the control panel (PANEL CONTROL), control by external input/output signals from the PLC (Programmable Logic Controller) connected to the connector (EXTERNAL CONTROL), and control by external communication from the connected personal...

  • Page 118: Preparations For Operations

    2 . Preparations for Operations 2 . Preparations for Operations Up to 16 laser units can be controlled from a single personal computer . The equipment configuration and connector connections are shown in the following figure. Equipment No.00 Equipment No.01 Equipment No.15 Personal computer, etc.

  • Page 119: Initial Settings

    3 . Initial Settings 3 . Initial Settings Perform initial settings to control laser welding by external communication (RS-485 CONTROL) . Set communication schedules and equipment No . on the control panel of the laser . The communication schedules for data transfer are as follows. Data transfer system Conforming to RS-485, asynchronous, full duplex Transfer rate...
  • Page 120 3 . Initial Settings ⇒ Unless the CONTROL keyswitch is OFF, the INITIAL screen does not appear. Specifying Communication Schedules (1) Set communication schedules by setting 1 to 6 of "SW2" to ON or OFF. Move the cursor to the switch to be changed and press the ON key or OFF key for this setting.

  • Page 121: Setting Equipment No

    3 . Initial Settings Setting Equipment No . Display the INITIAL screen on the control panel of the laser and set equipment No . (NETWORK #) . ⇒ For controlling multiple lasers by single personal computer, it is necessary to register equipment No.
  • Page 122 3 . Initial Settings Setting the Set Value Definitively (1) Press the ENTER key to definitively set the set value. NETWORK # of INITIAL screen is set. INITIALIZE:OFF WATER 28˚C NETWORK #01 TEMP CONT 30˚C ALARM L20˚C H40˚C POSITION AUTO OFF 60min SW1-12345678 SW2-12345678 SW3-12345678 ML-2050A/2051A/2150A...

  • Page 123: Commands

    4 . Commands 4 . Commands This section explains the commands that are used to control laser welding by external communication . Code Table The codes for external communication with a personal computer and the text structure are as follows. For details, refer to "Setting Data" on page 125 to "Reading Error No.
  • Page 124 4 . Commands Code Contents Text structure PC to laser Laser stop command External communication Laser to PC control is not performed. PC to laser Trouble reset command External communication Laser to PC control is not performed. PC to laser SHOT COUNT reset command...

  • Page 125: Setting Data

    4 . Commands Setting Data The command (code: W) to set welding schedules by specifying equipment No . and schedule No . is explained below . CH1/CH0 Equipment No. (CH1 = tens digit, CH0 = units digit) Classification No. of the setting (LA1 = tens digit, LA0 = units digit) 99 Settings for the cooler (Set the schedule No.

  • Page 126: Reading Data

    4 . Commands Reading Data The command (code: R) to read the set values and monitor values of welding schedules by specifying equipment No . and schedule No . is explained below . CH1/CH0 Equipment No. (CH1 = tens digit, CH0 = units digit) Classification No.
  • Page 127 4 . Commands Set Value/Monitor Value Table ⇒ The items marked * are monitor values. These values can be read out but cannot be set. ⇒ The value in ( ) indicates the unit. ⇒ The unit of time setting depends on the setting of "7" of SW1 on the INITIAL screen.
  • Page 128 4 . Commands Data No . Item Data Range [FLASH 1] TIME on the [SCHEDULE] screen 000 – 100 (×0.1ms/×0.01ms) [FLASH 2] TIME on the [SCHEDULE] screen 000 – 100 (×0.1ms/×0.01ms) [FLASH 3] TIME on the [SCHEDULE] screen 000 – 100 (×0.1ms/×0.01ms) SLOPE] TIME on the [SCHEDULE] screen 000 –...
  • Page 129 4 . Commands 88 Schedule Settings for FLEX ― WATT 01 to 10 Data No . Item Data Range [Point 1] WATT on the [SCHEDULE] screen 0000 – 2000 (×0.1%) [Point 2] WATT on the [SCHEDULE] screen 0000 – 2000 (×0.1%) [Point 3] WATT on the [SCHEDULE] screen 0000 –...
  • Page 130 4 . Commands 00 Laser Power Monitor ― Energy, number of waveform data, etc. Data No . Item Data Range Schedule No. of laser power monitor data 00 – 31 [LAMP INPUT PWR] on the [POWER MONITOR] screen 000 – 999 (×1%) Lamp input power [ENERGY] on the [POWER MONITOR] screen 0000 –...

  • Page 131: Setting The Control Method, Schedule No., Branch Shutter, Etc

    4 . Commands Setting the Control Method, SCHEDULE No . , Branch Shutter, etc . The command (code: WS) to set the control method, SCHEDULE No ., branch shutter, high voltage ON/OFF status, guide light ON/OFF status, automatic laser power value transmission ON/OFF status, etc . by specifying equipment No . is explained below .

  • Page 132: Setting The Mirror Of The Timesharing Unit

    4 . Commands * When the external input/output control is turned OFF at "1: Control by external input/output signals (Output schedules are set on the control panel)", the control method is changed to "0: Control by control panel." * When the external input/output control is turned OFF at "5: Control by external input/output signals (Output schedules are set on the personal computer)", the control method is changed to "2: Control by external communication control."...

  • Page 133: Reading The Control Method, Schedule No., Branch Shutter, Etc

    4 . Commands Unused (fixed to □) Valid only at external communication control. If there is any setting that ACK or NAK cannot be changed, all are invalidated and [NAK] is returned. Reading the Control Method, SCHEDULE No . , Branch Shutter, etc . The command (code: RS) to read the control method, SCHEDULE No ., branch shutter, high voltage ON/OFF status, guide light ON/OFF status, automatic laser power value transmission ON/OFF status, etc .

  • Page 134: Reading The Timesharing Unit Status

    4 . Commands Reading the Timesharing Unit Status The command (code: RM) to read the timesharing unit status is explained below . CH1/CH0 Equipment No. (CH1 = tens digit, CH0 = units digit) SH1/SH0 Schedule No. (SH1 = tens digit, SH0 = units digit) Control method 0: Control by control panel 1: Control by external input/output signals (Output schedules are set on...

  • Page 135: Stopping A Laser Light Output

    4 . Commands If the Laser is ready for use, it returns an [ACK]. If not, the Laser returns a [NAK]. The Laser is not ready for use when: ACK or NAK • An alarm is activated. • HV is OFF. •...

  • Page 136: Resetting The Total Number Of Outputs

    4 . Commands Resetting the Total Number of Outputs The command (code: C1) to reset the total number of outputs (SHOT COUNT) is explained below . CH1/CH0 Equipment No. (CH1 = tens digit, CH0 = units digit) The Laser accepts the command only when in external communication ACK or NAK control (RS-485 CONTROL) mode.
  • Page 137 4 . Commands Error No. (E1 = tens digit, E0 = units digit) All error numbers are transmitted. If no error has occurred, the error No. is to E1/E0 be [00]. For the contents corresponding to error No., refer to "Table of Error Contents"...

  • Page 139: Chapter 6 Printing Set Values And Measured Values

    1 . Printing Set Values Chapter 6 Operating Part ● Printing Set Values and Measured Values When the Printer Model BL2-58SNWJC (option) manufactured by SANEI ELECTRIC INC . is connected to the laser by using an RS-485 cable, the output schedules of each SCHEDULE and the measured values of the POWER MONITOR screen can be printed .
  • Page 140 1 . Printing Set Values Example Example FORM:FIX (fixed waveform setting) FORM:FLEX (flexible waveform setting) ML-2050A/2051A/2150A...

  • Page 141: Printing Measured Values

    2 . Printing Measured Values 2 . Printing Measured Values ⇒ If the power supply is OFF, turn ON the MAIN POWER switch and then turn ON the CONTROL keyswitch. ⇒ To print measured values, set welding schedules and output laser light actually. At this time, "...
  • Page 142 2 . Printing Measured Values Example Example FORM:FIX (fixed waveform setting) FORM:FLEX (flexible waveform setting) ML-2050A/2051A/2150A...

  • Page 145: Chapter 1 How To Perform Maintenance

    1 . Maintenance Parts and Standard Intervals of Inspection/Replacement Chapter 1 Maintenance Part ● How to Perform Maintenance NOTE Before starting maintenance, read the following items and take extreme care . WARNING ■ Before starting maintenance operations, be sure to turn OFF the power supply . If a high voltage is already applied, turn OFF the power supply and then start these operations at least in 5 minutes .
  • Page 146 1 . Maintenance Parts and Standard Intervals of Inspection/Replacement Operation Contents of Part name Model No . interval operation (standard) (*1) (*2) 6 months Clean Water filter MLF-0006-00 3 years Replace Floating panel Z-01835-001 1 year Replace Cooling water MLU-0604-00 6 months Replace (Purified water, 20L)
  • Page 147 1 . Maintenance Parts and Standard Intervals of Inspection/Replacement *3: The number of flashes as an indication of the life of the lamp (lowering of light quantity, cracks in the lamp, and a lighting failure) differs greatly depending on the laser output conditions and the laser irradiation interval. When the flashlamp is used in a single shot or with a long standby time as compared with continuous flash in repetition of several shots to several tens of shots per second, the number of flashes may become...

  • Page 148: Maintenance Of The Cooler Unit Section

    2 . Maintenance of the Cooler Unit Section 2 . Maintenance of the Cooler Unit Section This section explains how to perform cleaning for the air filter and water filter, and how to perform maintenance for the ion-exchanger . This section also explains how to drain water from the cooling water tank and laser chamber, which is required at another maintenance .

  • Page 149: Draining Water From The Cooling Water Tank

    2 . Maintenance of the Cooler Unit Section Draining Water from the Cooling Water Tank Before replacing the ion-exchange resin for refilling, replacing the ion-exchanger, and replacing cooling water (once every 6 months), drain water from the cooling water tank to make the tank empty. When moving or transporting the equipment or when the equipment is stopped for one month or more, make the cooling water tank empty in advance.

  • Page 150: Changing The Ion-Exchange Resin And Replacing The Ion-Exchanger

    2 . Maintenance of the Cooler Unit Section Changing the Ion-Exchange Resin and Replacing the Ion-Exchanger The ion-exchange resin in the ion-exchanger has a function to keep high purity by removing the ion generated by deteriorated cooling water. Change the ion-exchange resin with a new one within 6 months after use.
  • Page 151 2 . Maintenance of the Cooler Unit Section (4) Remove the cap of the ion-exchanger and discard the used ion-exchange resin. Cross-recessed head machine screw with washer (M4, 16mm in length, material SUS) Remove the 4 cross- recessed head machine screws with washer and Discard the used ion- pull the cap upward.
  • Page 152 2 . Maintenance of the Cooler Unit Section Installing the Ion-Exchanger (1) Insert the ion-exchanger and turn it clockwise with the mounting/removing tool. <Not e> Use the mounting/removing tool for installing the ion-exchanger . If the mounting/removing tool is too tightened, the thread portion may be broken . (2) Put cooling water up to the line under HIGH of the water level label with the attached water feed pump.

  • Page 153: Cleaning The Water Filter

    2 . Maintenance of the Cooler Unit Section Cleaning the Water Filter The water filter is provided in the cooling water tank and filtrates cooling water. Perform cleaning for the water filter every 6 months. Replace it every 3 years. Item required Gloves (vinyl), water feed pump, cooling water (6 liters), and mounting/removing tool Moving the Water Filter...

  • Page 154: Bleeding The Laser Chamber And Others Of Water

    2 . Maintenance of the Cooler Unit Section Bleeding the Laser Chamber and Others of Water When replacing the flashlamp, bleed the laser chamber of water beforehand. When the laser is not used for one month or more or when the room temperature of the installation place goes down below 0ºC for a compelling reason, bleed the laser chamber of water and also bleed the cooling water tank and ion-exchanger of water to discharge cooling water completely.

  • Page 155: Maintenance Of The Laser Oscillator Section

    3 . Maintenance of the Laser Oscillator Section 3 . Maintenance of the 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.
  • Page 156 3 . Maintenance of the Laser Oscillator Section (4) Remove the 2 screws and then remove the lead wire of the flashlamp. Remove the 4 bolts and then remove the upper chamber. Put it upside down on a clean cloth so that its inside may be visible. Electrode cover Remove the 2 screws .
  • Page 157 3 . Maintenance of the Laser Oscillator Section Replacing the Flashlamp (1) Remove the lamp holders on both sides. Straighten the lead wire of the flashlamp and pull out the lamp holder along the lead wire. Pull out the O-rings on both sides of the flashlamp in the same way.
  • Page 158 3 . Maintenance of the Laser Oscillator Section Installing the Laser Chamber (1) Install the assembled upper chamber according to the lower chamber. Adjust the pin hole of the upper chamber to the pin of the lower chamber and fix it with 4 bolts.

  • Page 159: Making An Incident Beam Adjustment Of The Optical Fiber

    3 . Maintenance of the Laser Oscillator Section Making an Incident Beam Adjustment of the Optical Fiber Since this laser adopts a high-precision optical fiber, no adjustment is required when the fiber is mounted or dismounted once an incident beam adjustment is finished. However, after a laser oscillation adjustment or optical adjustment is made or after the beamsplitter, input unit, YAG rod, or laser chamber is removed, or after the φ0.2 mm optical fiber is replaced, an incident beam adjustment must be made.

  • Page 160: Cleaning The Optical Fiber

    3 . Maintenance of the Laser Oscillator Section (3) Place the wet part of the cleaning paper onto each optical part. (4) Holding one end of the cleaning paper, wipe each optical part by pulling the cleaning paper across it at a constant speed from one side to the other. Pulling the cleaning paper across it at a constant speed .

  • Page 161: Maintenance Of The Power Supply Section

    4 . Maintenance of the Power Supply Secti 4 . Maintenance of the Power Supply Section Replacing the Lithium Battery for Backup Replace the lithium battery for backup provided on the CPU board in the main unit. The service life of the battery is about 3 years. Replace it within 3 years. ATTENTION Follow your local environmental regulations for battery disposal because Lithium Battery contains dangerous materials .

  • Page 162: Replacing The Battery Of The Control Board Of The Control Panel

    4 . Maintenance of the Power Supply Secti Replacing the Battery of the Control Board of the Control Panel Replace the lithium battery on the control board provided under the control panel. Replace it every 3 years. ATTENTION Follow your local environmental regulations for battery disposal because Lithium Battery contains dangerous materials .

  • Page 163: Cleaning The Air Filter

    4 . Maintenance of the Power Supply Secti (5) Replace the battery behind the PC board with a new battery. (6) Re-place the control PC board. When re-placing the control PC board, align the connectors of the control PC board with those of the PC board beneath it. Be careful to avoid bending the connector pins.

  • Page 165: Chapter 2 Inspection And Measure To Be Taken At Occurrence Of An Error

    1 . Error Display and How to Take a Measure Chapter 2 Maintenance Part ● Inspection and Measure To Be Taken at Occurrence of an Error 1 . Error Display and How to Take a Measure When an error occurs in the laser, the contents of the error are displayed on the control panel screen as shown below .
  • Page 166 1 . Error Display and How to Take a Measure High Alarm No . Display on control panel Measures voltage output Cooling water volume is insufficient. Add cooling water. If the equipment is COOLANT LOW LEVEL swayed, the coolant level may change. Stabilize the equipment.
  • Page 167 1 . Error Display and How to Take a Measure High Alarm No . Display on control panel Measures voltage output Check discharge unit for absence of cooling DISCHARGE UNIT TEMP water; and fan motor on the rear for not running.
  • Page 168 1 . Error Display and How to Take a Measure High Alarm No . Display on control panel Measures voltage output Output schedule setting ([PEAK], pulse SETTING ERR width, [REPEAT]) exceeds the capacity. The (OVERLIMIT OF MAX PWR) set value is reset to the value before the change.

  • Page 169: Operation For Closing Interlock

    2 . Troubles not Displaying Fault Code Operation for Closing Interlock REMOTE INTERLOCK Open connector Close Error Error output Normal ｝ At PANEL CONTROL or RS-485 CONTROL, they remain OFF even if the TROUBLE Resonator shutter RESET signal is input. They don't return to Branch shutter state OFF during error...

  • Page 173: Specifications

    Specifications Specifications ML-2050A ML-2051A ML-2150A Maximum rated output 15 W 25 W 15 J/P 7 J/P 25 J/P Max. output energy (Pulse width 5ms) (Pulse width 5ms) (Pulse width 5ms) Max. peak power 4 kW 2.5 kW 6 kW Oscillator Standard: 0.2 to 10.0 ms (0.1 ms steps) Pulse width Fine setting: 0.20 to 5.00 ms (0.02 ms steps)
  • Page 174 Specifications *1 Under the schedule below: Model Type Laser Output Energy per Pulse Peak Power ML-2050A 5 J minimum 1 kW minimum ML-2150A ML-2051A 0.5 J minimum 0.4 kW minimum Minimum bending radius of the optical fiber Core diameter Minimum bending radius φ...

  • Page 175: Dimensional Outline Drawings

    Dimensional Outline Drawings Dimensional Outline Drawings Unit: mm CONTROL POWER HIGH VOLTAGE READY SHUTTER 1 CURSOR LASER START/STOP TROUBLE MENU SHUTTER 2 RESET SHUTTER 3 ENTER EMISSION Top view (120) (80) Right side view Front view Left side view Rear side view ML-2050A/2051A/2150A...

  • Page 176: Available Output

    Available Output Available Output The available upper-limit output depends on the setting of peak power and pulse width (laser output time ms) . It is graphically shown for each model . To obtain the maximum rated output with a short pulse width setting, it is necessary to increase the peak power or repetition.
  • Page 177 Available Output ML-2051A Upper-limit output (W) Peak power (kW) ML-2150A Upper-limit output (W) Peak power (kW) ML-2050A/2051A/2150A...

  • Page 178: Timing Chart

    Timing Chart Timing Chart An example of timing chart for the case where a high voltage is supplied to this laser and laser light is output up to a monitor output is shown below . In each timing chart, the equipment operation is represented on the axis of ordinates and the lapse of time is represented on the axis of abscissas to show the change status based on changes with the lapse of time at each operation and the time required for a certain operation .
  • Page 179 Timing Chart 2-powersharing . . . Operation by control panel (PANEL CONTROL) The following diagram shows the lapse of time in the case where BEAM1 and BEAM2 to are set to ON on the control panel and laser light is simultaneously output from input unit 1 and input unit 2 after the branch shutter is opened.
  • Page 180 Timing Chart 2-powersharing . . . Operation by external input signals (EXTERNAL CONTROL) The following diagram shows the lapse of time in the case where a signal is sent from the PLC and schedule signal input, BEAM1 and BEAM2 are selected, and then laser light is simultaneously output from input unit 1 and input unit 2 by opening the branch shutter.
  • Page 181 Timing Chart 2-timesharing . . . Operation by external input signals (EXTERNAL CONTROL) The following diagram shows the lapse of time in the case where a schedule signal input, BEAM1 and BEAM2 are selected and laser light is output from input unit 1 and input unit 2 respectively with a time difference by opening the branch shutter.
  • Page 182 Timing Chart Repeated operation (EXTERNAL CONTROL) The following diagram shows the lapse of time in the case where a signal is sent from the PLC and schedule signal input, BEAM1 and BEAM2 are selected, and then laser light is simultaneously output from input unit 1 and input unit 2 by opening the branch shutter. (*: Operation on the user side) 48s max .
  • Page 183 Timing Chart Repeated operation (20 pps or more) (EXTERNAL CONTROL) The following diagram shows the lapse of time in the case where laser is output according to the number of repeated outputs of 20 pps or more. (*: Operation on the user side) High Voltage ON Output 48s max .

  • Page 184: Explanation Of Terminology

    Explanation of Terminology Explanation of Terminology The following table explains the terminology related to laser welding. General terms and the terms peculiar to this laser are included. When there is any related page in this Operation Manual, the reference page is shown. Control code that is used for communication between computers.
  • Page 185 Explanation of Terminology Fixed waveform that is a laser light output means to be used by this laser. Laser light with a fixed waveform by up to 3 divisions in the case where output time and the output value are set in the range of the first laser and the third laser. → P.61 Laser output method by this laser.
  • Page 186 Explanation of Terminology LASER is an abbreviation of Light Amplification by Stimulated Emission of Radiation, which is light Laser artificially generated by laser oscillator. Laser is classified into solid laser, liquid laser, and gas laser by medium. YAG Laser is typical solid laser. This is a laser oscillation vessel.
  • Page 187 Explanation of Terminology At laser welding, the peak power means the energy amount per time (value resulting from dividing Peak power the pulse energy by pulse width) and its unit is watt (W). Peak value Laser output peak value. "PEAK" value that is set on the SCHEDULE screen in this laser. → P.55 Full solid relay that adopts a light emitting diode on the driving side and MOS (Metal-Oxide Photo MOS relay Semiconductor) FET (Field-Effect Transistor) for the contact.
  • Page 188 Explanation of Terminology Optical fiber type that is used in this laser. Abbreviation of Step Index. The SI type is one of multi- mode optical fibers (MMF: Multi Mode optical Fiber) in which the refractive index distribution in the core is uniform. The index means the refractive index. → P.56 Electric current whose magnitude and direction change periodically, having the same phase.

  • Page 189: Output Schedule Data Entry Table

    Output Schedule Data Entry Table Output Schedule Data Entry Table ML-2050A/2051A/2150A...
  • Page 190 Output Schedule Data Entry Table ML-2050A/2051A/2150A...
  • Page 191 Output Schedule Data Entry Table ML-2050A/2051A/2150A...
  • Page 192 Output Schedule Data Entry Table ML-2050A/2051A/2150A...

  • Page 193: Index

    Index Index Input Pins of EXT.I/O (3) Connector 103 Output Pins of EXT.I/O (1) Connector 100 acceptance time 84 Output Pins of EXT.I/O (2) Connector 102 Air Filter 32, 148, 163 Output Pins of EXT.I/O (3) Connector 104 ALARM 59 PLC 95 AVERAGE 57 REMOTE INTERLOCK Connector 27, 108...
  • Page 194 Index Laser Beam Input Unit 30 method of connecting 43 Laser Chamber 30, 154 laser controller 88 Laser Controller 23, 46 NETWORK# 59 LASER CONTROLLER LASER CONTROLLER connectors 27 Short-Circuiting Cable 27 OFF (-) Key 29, 88 LASER CONTROLLER connector 46 ON (+) Key 29, 88 Laser Light Optical Fiber...
  • Page 195 Index TROUBLE RESET Key 29, 88 READY Lamp 29 REFERENCE SET 58, 69 value of lamp input power 58 REMOTE INTERLOCK Connector 27 REPEAT 55, 62 RESET SELECT 56, 66 →GOOD 56 WATER 56, 90 →SHOT 56 Water Filter 153 Resonator Mirror Holder 30 Water Level Label 27 RS-232C/RS-485 conversion adapter 47...

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