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Amada PULSETIG MAWA-050A Operation Manual

Welding power supply
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PULSETIG
®
WELDING POWER SUPPLY
MAWA-050A
Dedicated to Touch Start
OPERATION MANUAL
Z09OM1182268-13

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Summary of Contents for Amada PULSETIG MAWA-050A

  • Page 1 PULSETIG ® WELDING POWER SUPPLY MAWA-050A Dedicated to Touch Start OPERATION MANUAL Z09OM1182268-13...
  • Page 2 MAWA-050A Welding Power Supply MAWA-050A. Thank you for purchasing our PULSETIG ® This operation manual describes its method of operation and precautions for use. Read this operation manual carefully prior to use. Store appropriately for ready reference. Contents Notification of Risk Information (1) Responsibility for Overall Management ·························································...
  • Page 3 MAWA-050A (2) -4-1. Improvement against a misfire ············································· 2-11 (2) -5. Connecting the argon gas ························································ 2-12 (2) -6. Connecting the external input/output devices ······························· 2-13 (2) -7. Connecting the external communication device ···························· 2-14 (2) -8. Connection with the torch head for touch start ······························ 2-15 (2) -9.
  • Page 4 MAWA-050A (4) -2. Welding current pulse modulation setting ····································· 5-6 (4) -3. Welding condition copy ····························································· 5-7 (5) Monitor Function Setting ·········································································· 5-8 (5) -1. Monitor item setting ································································· 5-8 (5) -2. Upper/lower limit value setting ···················································· 5-9 (6) Touch Start ···························································································5-10 (6) -1.
  • Page 5 MAWA-050A Notification of Risk Information This “Notification of Risk Information” is intended to notify the risk or others related to this machine (Ordinance on Industrial Safety and Health, Article 24-13) so as to promote the execution of risk assessment (Industrial Safety and Health Act, Article 28-2) on the enterprise side for prevention of labor disasters.
  • Page 6 MAWA-050A (1) Responsibility for Overall Management (1) -1. Observance of laws, regulations and safety standard related to the pulse TIG welding machine When selecting an installation place of the pulse TIG welding machine, performing the power supply work on the input side, handling and taking charge of high-pressure gas, and taking charge of products after welding, and disposing wastes, please observe the laws, regulations and safety standard of your company.
  • Page 7 MAWA-050A (3) Map of Residual Risks For the details of various residual risks, refer to “(4) Table of Residual Risks.” (3) -1. Map of residual risks of the welding power supply unit Terminal cover - Collapse Emergency stop button Welding power supply fan - Rolling-in Welding power supply unit and welding power supply inside - Electric shock...
  • Page 8 MAWA-050A (3) -2. Map of residual risks of the standard system (Welding power supply + Torch + Torch driving unit + Wire supply unit) Remarks  This is supposed on the case where the standard welding machine is incorporated. Execute risk assessment by using the customer’s actual specification. Argon gas Dust and argon gas - Poisoning...
  • Page 9 MAWA-050A (4) Table of Residual Risks For concrete positions of residual risks, refer to “(3) Map of Residual Risks.” (4) -1. Installation WARNING Transporting the welding power supply [Source of risk] Terminal cover [Contents of risk] If the welding power supply is transported by holding such a projection as the terminal cover, the foot may be collapsed if it is fallen down.
  • Page 10 MAWA-050A WARNING Electric wiring [Source of risk] Input cable and input/output signal cable [Contents of risk] If the cover is deteriorated or damaged, the cable is directly touched, or a metallic part touched with the cable is touched, an electric shock may be caused. [Protective measure] Do not use a deteriorated or damaged cable or plug.
  • Page 11 MAWA-050A (4) -2. Machine operation WARNING Welding [Source of risk] Arc light [Contents of risk] If arc light is directly seen, the eyes may be inflamed. [Protective measure] Before performing welding operations, put on light-shielding glasses or protective mask with light-shielding level No.9 or more. To monitor welding, put on protective glasses with light-shielding level No.9 or more or perform monitoring through a light-shielding curtain.
  • Page 12 MAWA-050A WARNING Welding [Source of risk] Dust and argon gas [Contents of risk] If the area is filled with dust and argon gas, the human body may be badly affected. [Protective measure] Perform ventilation around the welding operation place and the whole factory at all times.
  • Page 13 MAWA-050A CAUTION At all times [Source of risk] Rotary part of the wire supply unit [Contents of risk] If hands, fingers, hairs or clothes are brought near the rotary part of the wire supply unit, they may be rolled into it. [Protective measure] While the power supply of the welding machine is ON, do not bring hands, fingers, hairs, clothes, etc.
  • Page 14 MAWA-050A CAUTION Taking out a workpiece [Source of risk] Workpiece and electrode immediately after welding [Contents of risk] Immediately after welding, the workpiece and electrode are still hot. If the welded workpiece is touched with a bare hand or the electrode is touched in taking out a workpiece, this may result in a burn.
  • Page 15 MAWA-050A (4) -3. Maintenance WARNING Gas piping [Source of risk] Argon gas [Contents of risk] In case the argon gas piping work is inappropriate, a gas leak may occur. If the welding operation place is filled with argon gas, the human body may be affected badly.
  • Page 16 MAWA-050A WARNING Electrode replacement [Source of risk] Electrode [Contents of risk] If another worker operates the welding power supply by mistake, this may cause an electric shock due to a high voltage to the worker who replaces the electrode. In case a voltage is left by charged electrode, an electric shock may occur.
  • Page 17 MAWA-050A (4) -4. Scrapping WARNING Dust scrapping [Source of risk] Dust [Contents of risk] If dust is inhaled, the human body may be badly affected. [Protective measure] Classify collected dust according to materials and keep it in a can with a cover so that it may not be scattered. Scrap it as industrial waste.
  • Page 18 MAWA-050A (5) On 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. (6) Warning Labels A warning label is pasted on the welding power supply unit for safe use.
  • Page 19 MAWA-050A 1. Overview Features  Since this equipment is designed in a compact form, it can be moved and installed easily.  The equipment is provided with a welding current monitoring function to support the OK/NG judgment of welding.  Stabilized welding quality is realized by constant-current control.
  • Page 20 MAWA-050A Names of Parts (2) -1. Front panel The names of operating parts such as switches on the front panel are shown below. For the function of each part, refer to “3. (1) Front Panel.” Main power switch  Touch panel display ...
  • Page 21 MAWA-050A (2) -2. Rear panel The names of terminals and connectors provided on the rear panel are shown below. For the cables to be connected to each part, refer to “2. (2) Connections.” (After the terminal cover is removed) Welding power supply input terminal block ...
  • Page 22 MAWA-050A Specifications (3) -1. Product specifications Model name MAWA-050A-00-00 MAWA-050A-00-10 Power supply Single-phase 200 V AC ±10% (50/60 Hz) voltage Power consumption 1.3 kVA Maximum output 50 A current Secondary constant current control Control method DC inverter type (Control frequency: approx. 45 kHz) Start type Touch start Maximum no-load...
  • Page 23 MAWA-050A Pre-flow 0 ~ 9999 ms (in unit of 1 ms) Initial current 0 ~ 999 ms (in unit of 1 ms) (*9) Up slope WELD1 0 ~ 99.9 ms (in units of 0.1 ms) Main welding (*5) 100 ~ 999 ms (in unit of 1 ms) Down slope Time setting range Cooling (*5)
  • Page 24 MAWA-050A Emergency Main power supply shut-off, welding current EM input circuit stop stop and starts prohibition Welding current stop (peak: approx. 30 A) Overcurrent Primary current protection detection Fuse: 15 A Internal Temperature temperature Welding current stop and start prohibition protection detection Start signal ON...
  • Page 25 MAWA-050A Input terminal L1, L2 and PE crimp-style terminals for M4 Torch (-): 3/8-24 UNF Output terminal Grounding (+): Φ8 (terminal thickness 5 mm) Terminal shape One-touch joint: Φ6 Gas connector Input connector D-Sub 37-pin (female), 2.6 mm screw Output connector D-Sub 25-pin (female), 2.6 mm screw *1: The duty cycle (load time for a period of 10 minutes) of “JIS C9300-1 3.37”...
  • Page 26 MAWA-050A (3) -2. Product dimensions (3) -2-1. Main unit (Unit: mm) G A S I N I N P U T O U T P U T HEAD I/O TORCH(-) EARTH(+) MONITOR POWER INPUT R S - 4 8 5 (542) 1.
  • Page 27 MAWA-050A (3) -2-2. Step-down transformer (option) (Unit: mm) Phase quantity / Winding Single phase / One winding Primary / Secondary voltage 230 V / 200 V Secondary current 10 A Capacity 2 kVA Weight 8.2 kg Protection class IP00 Maximum operating temperature 40°C 1.
  • Page 28 MAWA-050A (3) -3. Duty cycle graph (Ambient temperature: 40°C) 5.5% (50A) (50A) 10% (38A) 10% (32A) 20% (28A) Weld time: 4 sec. Weld time: 1 sec. 30% (21A) 20% (22A) 40% (16A) 30% (16A) 50% (12A) 40% (13A) 50% (10A) Duty cycle [%] * The duty cycle is the ratio (in percent) of load time for the total time.
  • Page 29 MAWA-050A Operational Principle Diagram Electromagnetic Electromagnetic contactor 1 Inverter transformer contactor 2 EARTH(+) Power Terminal block fuse switch 端子台 ヒューズ スイッチ パワー基板（2/2） board (2/2) 電磁接触器1 電磁接触器2 Power Trigger board transformer (1/2) トリガートランス (1/2) TORCH(-) Trigger トリガー基板 board Coil コイル Safety relay 安全リレー...
  • Page 30 MAWA-050A Options The main options are shown in the table below. For options that are not described here (torch selector), make contact with us for information. Product name Model Part No. Step-down transformer T-114378-MC 1209608 EP1182297 1182297 Input cable (*1) EP1182298 1182298 10 m...
  • Page 31 MAWA-050A Product name Model Part No. φ1.0 mm (with lanthanum 2%) 1156517 φ1.0 TEC lanthanum, φ1.0 1209682 Tungsten electrode Lanthanum 2% φ1.6 mm (with lanthanum 2%) 1156518 φ1.6 TEC lanthanum, φ1.6 1186072 Flow meter FR-IIS-P 1040773 Digital flow meter FSM2-NAF100-S06ARN-P70 1188807 Input/output signal cable (3 m) (*3) SK1187086...
  • Page 32 MAWA-050A CE Marking The MAWA-050A-00-10 is applicable to CE marking. For fitting for CE marking, there are limitations shown below.  This product is classified into Class A of EN55011 and is not intended to be used for a residential area to which power is supplied by low-voltage distribution network.
  • Page 33 MAWA-050A 2. Installation and Connections WARNING When transporting the welding power supply with hands, hold the bottom surface. If the  welding power supply is carried by holding such a projection as the terminal cover and the projection is damaged, causing the welding power supply to fall down, the foots may be collapsed by it.
  • Page 34 MAWA-050A The installing conditions for the welding power supply are explained below. Take a serious view of the following contents. Ambient temperature +5 ~ +40°C Maximum humidity 85% or less (without condensation) Installing conditions Maximum altitude 1000 m or lower Pollution level Temperature range -10 ~ +55°C...
  • Page 35 MAWA-050A Connections (2) -1. Preparation for connections The standard connection status is as shown in the following figure. The input cable, grounding cable, torch and torch cable are options. (Refer to “1. (6) Accessories” and “1. (7) Options.”) For the information on options, make contact with us. The argon gas, reducing valve, flow meter, tube, torch fixing base and insulating material except accessories and options should be prepared by the user.
  • Page 36 MAWA-050A Products to be prepared by customer Pressure: 0.1 ~ 0.6 MPa Argon gas (cylinder type) Flow rate: 0.5 L/min or more <Reference> Manufacturer: YUTAKA Co., Ltd. Reducing valve and flow meter Product name: 2-step pressure adjuster with a flow meter Model: FR-II S-P <Recommended item>...
  • Page 37 MAWA-050A (2) -2. Connecting the power supply WARNING  Before connecting the primary power supply, turn off the source power supply on the factory side.  Execute the grounding work (class D grounding or higher) for the primary power supply and PE terminal according to the electrode connection diagram.
  • Page 38 MAWA-050A In the following, how to connect the power supply will be described. Connect the input cable to the welding power supply input terminal block provided on the rear panel according to the following procedure. Turn off the source power supply on the factory side. Pass the input cable through the cable gland (lower) of the terminal cover.
  • Page 39 MAWA-050A (2) -3. Connecting the ground WARNING  Use the dedicated grounding cable. Fix the cable connecting part securely. Do not extend the cable more than the necessary length. The cable length should be 10 m or less. A large current will flow and a high voltage of about 10 kV will be applied at a start of welding.
  • Page 40 MAWA-050A Fix the end of the grounding cable to the grounding terminal with the attached bolts and nuts. Remarks  When tightening the nut, perform it so that the grounding cable may face toward the rear. Bolt Grounding terminal 2. Installation and Connections...
  • Page 41 MAWA-050A (2) -4. Connecting the torch WARNING  Use the dedicated torch cable. Fix the cable connecting part securely. Do not extend the cable more than the necessary length. The cable length should be 10 m or less. A large current will flow and a high voltage of about 10 kV will be applied at a start of welding.
  • Page 42 MAWA-050A Turn the end of the torch cable and connect it to the torch terminal. Torch terminal Install the terminal cover on the rear panel. Put the claws on the left and right side into the grooves of the rear panel. Groove Claw Fix the terminal cover with the attached screws.
  • Page 43 MAWA-050A (2) -4-1. Improvement against a misfire Our torch: In order to improve the torch against a misfire (so that arc may not be scattered from the torch), we prepare a torch with a meshed nozzle and a nozzle ring. The nozzle ring is attached to our torch.
  • Page 44 MAWA-050A (2) -5. Connecting the argon gas WARNING  Fix the gas cylinder securely on the cylinder stand or such a structure as the wall and pillar. If the gas cylinder is fallen down, the foot may be collapsed.  Entrust the gas piping work with the specialist.
  • Page 45 MAWA-050A (2) -6. Connecting the external input/output devices In the following, how to connect the external input/output devices will be described. There are 4 connectors for external input/output on the rear panel. They are used for control from the outside and control of external devices.
  • Page 46 MAWA-050A (2) -7. Connecting the external communication device In the following, how to connect the external communication device will be described. There is a connector for external communication on the rear panel. This connector is used to set conditions and read data from PC. For the connection with the external communication device, refer to “7.
  • Page 47 MAWA-050A (2) -8. Connection with the torch head for touch start In the following, connections to be made for a torch head will be described. Make connections according to the following procedure. For the explanation and usage of the touch start function, refer to “5. (6) Touch Start.” [Connection when the Torch drive type is set to “CYLINDER”...
  • Page 48 MAWA-050A (2) -9. Connecting the step-down transformer (option) MAWA-050A L1,L2,PE display side Input power cable Step-down transformer T-114378-MC 0,200V,G display side 0,230V,G display side L1,L2,PE display side Transformer input cable Connect to switchboard. 2. Installation and Connections 2-16...
  • Page 49 MAWA-050A Interface (3) -1. Explanation of external input/output signals (3) -1-1. Input connector (D-Sub 37-pin, female) Remarks  EM1, EM2, EM1_COM, and EM2_COM are non-voltage contact inputs of +24 V DC/30 mA. Other inputs are photo coupler inputs of +24 V DC/approx. 10 mA. ...
  • Page 50 MAWA-050A Terminal Terminal name Explanation EM1_COM Common of the emergency stop 1 input terminal. Torch selecting signal input terminal. TORCH When this terminal is open, torch 1 is used. SELECT When this terminal is closed, torch 2 is used. Welding power ON/OFF changeover input terminal. WELD ON When this terminal is closed, WELD ON is executed.
  • Page 51 MAWA-050A (3) -1-2. Output connector (D-Sub 25-pin, female) Remarks  Output terminals are output by photo relay and the rating is +24 V DC/100 mA. For connecting to the output connector, use D-Sub connector 25-pin, male.  Connector HDBB-25P(05) (HIROSE ELECTRIC CO.,LTD.) Recommended parts Case...
  • Page 52 MAWA-050A Terminal Terminal Explanation name WIRE START Brazing wire supply start signal output terminal. *1: For the synchronizing output timing, refer to timing charts in 6. (1), 6. (2), 6. (3), and 6. (4). 2. Installation and Connections 2-20...
  • Page 53 MAWA-050A (3) -1-3. Option input/output connector (D-Sub 25-pin, male) Remarks  Every input terminal is a photo coupler input of +24 V DC/approx. 10 mA.  Output terminals are output by photo relay and the rating is +24 V DC/100 mA. For the customer-prepared motor head, use this connector input/output.
  • Page 54 MAWA-050A Terminal No. Terminal name Explanation Common terminal of the cylinder solenoid valve signal output H-CY VLV COM terminal. Terminal for switching the auto mode and the fine weld mode. H-MODE (*2) When the circuit is open, “auto mode” is selected. Output When the circuit is closed, “fine weld mode”...
  • Page 55 MAWA-050A (3) -1-4. Current/voltage monitor connector (D-Sub 15-pin, female) Remarks  Output terminals are output by isolation amplifier. For connecting to the monitor connector, use D-Sub connector high-density 15-pin, male.  Connector HD-15SP (MISUMI Corporation) Recommended parts Case MDA-9H-M2.6 (MISUMI Corporation) Current/voltage monitor Terminal No.
  • Page 56 MAWA-050A (3) -2. Connection diagram of external input/output signals (3) -2-1. Input connector (D-Sub 37-pin, female) Input signals I/O Input D-Sub 37(Female) 25) 24V(Flow sensor) ※ INT.24V 36) INT.24V INT.24V EXT.COM 35) EXT.COM EXT.COM 24) 0V(Flow sensor) 37) COM EM RESET 13) EM RESET WELD STOP 1) WELD STOP...
  • Page 57 MAWA-050A (3) -2-2. Output connector (D-Sub 25-pin, female) Output signals I/O Output D-Sub 25(Female) GOOD 1) GOOD 2) NG 3) END E.STOP 4) E.STOP ERROR 5) ERROR OUT5 7) OUT5 OUT4 8) OUT4 OUT3 9) OUT3 OUT2 10) OUT2 OUT1 11) OUT1 OUT_COM 6) OUT_COM...
  • Page 58 MAWA-050A (3) -2-3. Option input/output connector (D-Sub 25-pin, male) Option input/output signals I/O HEAD (OPTION) D-Sub 25(Male) H-COM 2) H-COM INT.24V H-COM 8) H-COM EXT.COM H-ST1 1) H-ST1 H-ST2 6) H-ST2 H-READY 3) H-READY 4) GAS MID POINT 5) MID POINT H-ERROR 7) H-ERROR H-END...
  • Page 59 MAWA-050A (3) -3. External input/output signal table (3) -3-1. User input terminals On the external input/output setting screen, input terminal Nos. 22 and 23 (IN1 and IN2) can be allocated from the following signals. (Refer to “4. (8) External I/O Setting Screen.”) For wiring connection, refer to the connection diagram in “(3)-2-1.
  • Page 60 MAWA-050A Timing chart when the argon gas flowrate is normal  Detection upper limit Detection lower limit Argon gas flowrate Detection response time Digital flow meter output Gas flow error detection Pre-flow time Welding current set time Welding current (arc discharge) After-flow time Timing chart when the argon gas flowrate is abnormal ...
  • Page 61 MAWA-050A (2) When the pre-flow time: PRE ≥ 300 ms, an error is detected 10 ms before the welding start. Since an error is detected 10 ms before the welding start (= pre-flow time completed), an arc discharge does not occur. Detection upper limit Detection lower limit Argon gas flowrate...
  • Page 62 MAWA-050A (3) -3-2. User output terminals On the external input/output setting screen, output terminal Nos. 7 ~ 11 (OUT 1 ~ OUT 5) and output terminal Nos. 15 and 16 (OUT 6 and OUT 7) can be allocated from the following signals. (Refer to “4.
  • Page 63 MAWA-050A Terminal name Explanation When the measured current waveform of the second welding exceeds the 18.WEL2 UPPER upper limit of the judgment current value, this signal is output for the 02. NG CURRENT signal setting time. When the measured voltage value of the second welding is lower than the 19.WEL2 LOWER lower limit of the judgment voltage value, this signal is output for the 02.
  • Page 64 MAWA-050A - The SCH signal is not input when “4. (6)  (c) SCH & Torch select by I/O” is set to ON. *2: When “4. (6)  (a) NG judgment error” is set to ON and the welding result is LOST, “E05 Weld error”...
  • Page 65 MAWA-050A (3) -4. Input signal connecting method For connecting to the contact input device (when the internal power supply is used)  Connect terminal No.35 and terminal No.36. Internal side External side ※ INT.24V 36) INT.24V INT.24V EXT.COM 35) EXT.COM EXT.COM 37) COM WELD STOP...
  • Page 66 MAWA-050A For connecting to the PNP open collector output device (when the external power supply is  used) Connect the minus side of the external power supply of 24 V DC to terminal No.35. Internal side External side ※ INT.24V 36) INT.24V INT.24V EXT.COM...
  • Page 67 MAWA-050A 3. Operating Unit Front Panel IMPORTANT Operate the switches and touch panel display carefully by hand. If they are operated violently  or by using a screwdriver or pen point, this will result in damage. Operate each of the switches and touch panel display once a time. If multiple switches are ...
  • Page 68 MAWA-050A START button (with a green LED incorporated)  When “CYLINDER” is set for the Torch drive type, this button LED lights (in green) when welding is ready. When the START key of the panel is made effective on the Switch select screen, welding is started by pressing this button while it lights.
  • Page 69 MAWA-050A 4. Explanation of Screens Screen Structure The screen structure of MAWA-050A is as shown below. (4)  Envelope (2)  Password (4)  Envelope (3) Monitor screen input screen Start-up screen setting screen waveform check screen (14) External I/O check screen (16) Error history screen (2) ...
  • Page 70 MAWA-050A Remarks Each of the switches provided in the upper right of each screen is used to go to the Menu screen  or Monitor screen. Switch to go to the Monitor screen Switch to go to the Menu screen To go to the Monitor log screen, however, the switch provided in the upper right of the Monitor screen is used.
  • Page 71 MAWA-050A Menu Screen Menu screen  On the Menu screen, each function is displayed as a menu. The operator can go to the desired screen by pressing each switch. To display the Menu screen, press MENU provided in the upper right part of each screen. (a) Switch to go to the Monitor screen Used to go to the Monitor screen.
  • Page 72 MAWA-050A Error History Used to go to the Error history screen. (k) Start mode display The currently selected start mode “Touch Start” or “HV. Start” is displayed. This is displayed in the upper part of each screen. Remarks  When the password is made effective, the Password input screen is displayed by pressing the yellow switch.
  • Page 73 MAWA-050A Monitor Screen To perform welding, display this screen. A welding result with the last welding condition No. is displayed. In the status where this screen is displayed, welding is enabled and the READY signal is output. To display the Monitor screen, press MONITOR in the upper right part of each screen. Then, you can go to another screen directly.
  • Page 74 MAWA-050A (e) CURR The current waveform display (yellow lamp ON) or non-display (white lamp ON) can be selected. VOLT The voltage waveform display (red lamp ON) or non-display (white lamp ON) can be selected. (g) ZOOM The wave operating window for a waveform display change is opened. If this switch is pressed when the window is opened, the window can be closed.
  • Page 75 MAWA-050A Remarks  There is a difference in the waveform display range between when the “WELD1” and “WELD2” magnified display is selected and when “FULL” is selected. In the time display in the lower part of the graph, each weld time of “WELD1” and “WELD2” is displayed when the magnified display is selected.
  • Page 76 MAWA-050A When the monitor value exceeds the upper limit value (Set value on the Upper/lower limit set screen in 4. (12)) When the monitor value is lower than the lower limit value (Set value on the Blue Upper/lower limit set screen in 4. (12)) VOLTAGE The monitor values of WELD1 and WELD2 welding voltages are displayed.
  • Page 77 MAWA-050A screen are displayed. Even if the “Slope time” item of the Monitor select screen is set to “Exclude”, the waveform including the slope is displayed. Reference waveform While line Current waveform Yellow line Voltage waveform Red line * When the welding monitor value is “0”, no waveform is displayed. * When modulation is set, the modulation ON/OFF waveform is not displayed on the reference waveform.
  • Page 78 MAWA-050A Envelope Screen To make the envelope function effective, turn on “ENVELOPE” in 4. (11) (d) of the Monitor select screen. In this screen, the current reference waveform/voltage reference waveforms are obtained for each condition No. and the upper/lower limit value from the reference waveform is set as waveform data.
  • Page 79 MAWA-050A UPDN The upper/lower limit waveform set on the Envelope setting screen is displayed in a dotted line. When CURR is made effective and UPDN is pressed, the upper/lower limit waveform of the current is displayed. When VOLT is made effective and UPDN is pressed, the upper/lower limit waveform of the voltage is displayed.
  • Page 80 MAWA-050A (k) SETTING The envelop setting screen (Refer to  Envelope setting screen.) for setting the upper/lower limit value of envelope is displayed. Waveform display area After welding is performed on this screen, the welding waveform and the envelope waveform created from the upper/lower limit value set on the Envelope setting screen (Refer to ...
  • Page 81 MAWA-050A Envelope setting screen  This screen is used to decide and register the upper/lower limit value, reference waveform format, and envelope waveform to create an envelope waveform. (p) SCH The condition No. being set is displayed. (q) Current The upper limit value and lower limit value to be used for current envelope judgment can be set as relative values for the registered waveforms of the first welding (WELD1) and second welding (WELD2).
  • Page 82 MAWA-050A (s) Ref wave select The reference current waveform can be selected from the following 2 types and the selected switch lights in green.  Mes value Measurement value obtained by a power ON operation on the Envelope waveform check screen (Refer to “4. (4)  Envelope waveform check screen.”). ...
  • Page 83 MAWA-050A Basic Setting Screen This screen is used to display and set the information on the welding power supply. (a) Type The type of the welding power supply is displayed. (b) Version The program version of the main unit control unit and the program version of the touch panel of MAWA-050A are displayed.
  • Page 84 MAWA-050A (h) Comm speed A communication speed with external communication devices can be selected. 9600 Performs communication at 9600 bps. 14400 Performs communication at 14400 bps. 19600 Performs communication at 19600 bps. 38400 Performs communication at 38400 bps. [Initial value: 9600] Internal resistance It can be selected whether the resistor incorporated in MAWA-050A is used as a terminator for external communication.
  • Page 85 MAWA-050A Switch Select Screen This screen is not used to set welding conditions for each schedule but is used to perform common detail settings. There 2 pages, namely, Switch select screen (1/2) and Switch select screen (2/2). Switch select screen (1/2) ...
  • Page 86 MAWA-050A Enable START Switch At “ON”, the “START button” on the front panel is enabled. [Initial value: ON] (g) Internal Gas Flow This can select whether a gas flow operation is automatically controlled or not. At “ON”, the solenoid valve is turned on/off in conjunction with the pre-flow/after-flow time set on the Welding condition setting screen.
  • Page 87 MAWA-050A Switch selection screen (2/2)  (a) Torch drive type Regarding the motive power to operate the torch, either “MOTOR” or “CYLINDER” can be selected. Perform this setting according to your torch. [Initial value: MOTOR] (b) GOOD/NG signal output time After the end of all the welding sequence, the GOOD/NG signal output time can be set.
  • Page 88 MAWA-050A In Figure (A), since condition No. 1 and No. 8 are ON, welding is performed by condition No. 9. In Figure (B), since only condition No. 8 is ON, welding is performed by condition No. 8. Condition signals 16 and 32 are invalid because they are OFF at the decision of conditions. (e) SCH chg Delay time Sets the time to determine the SCH No.
  • Page 89 MAWA-050A Initialize Memory Screen This screen is used to initialize the memory so that all the setting conditions of the welding power supply may be reset to the set values provided at delivery from the factory. This screen can be displayed by pressing “CLEAR”...
  • Page 90 MAWA-050A Ext I/O Setting Screen Set inputs IN1/IN2 and outputs OUT1 ~ OUT7 of external input/output signals. Select them by “+” and “-.” The display is changed in the following order. User input terminals 01.GAS FLOW 02.H-ORG 03.H-HEAD UP User output terminals 01.GOOD 02.NG 03.END...
  • Page 91 MAWA-050A Welding Condition Setting Screen This welding power supply permits setting up to 127 types of welding condition. In this screen, the welding condition No., weld time length, welding current magnitude, etc. are set. There are two setting screens, namely, FULL SETTING screen in which all the detail condition settings can be set by operator himself and SIMPLE SETTING screen in which conditions can be input easily.
  • Page 92 MAWA-050A (b) Current Each peak current value at welding can be set independently. The settable range is 5.00 ~ 9.99 [A] (in units of 0.01 [A]) and 10.0 ~ 50.0 [A] (in units of 0.1 [A]). For the details of each item, refer to the following table. WELD1 FST (*2) Initial current [Initial value: 5.00 A]...
  • Page 93 MAWA-050A (c) Time Each operating time at welding can be set individually. For the details of each item, refer to the following table. Name Item Setting range Initial value Pre-flow time (pre-welding 0 ~ 9999 [ms] 0 ms gas output time) Initial current time (*3) 0 ~ 999 [ms] 0 ms...
  • Page 94 MAWA-050A SIMPLE SETTING screen  This screen permits settings easily because the number of current setting items is less than the FULL SETTING screen. When you go to the SIMPLE SETTING screen after setting conditions on the FULL SETTING screen and then display the Monitor screen, the set values of slope UL1 and DF1 of WELD1 automatically change into the same set current value of PL1 and the set values of slope UL2 and DF2 of WELD2 automatically change into the same set current value of PL2.
  • Page 95 MAWA-050A (10) Schedule Setting Screen This screen is mainly used to set the pulse modulation of welding current. The welding current is determined by the data set in the welding condition settings and the data set on this screen. There are two types setting screens, namely, Schedule setting screen (1/2) to set the first welding and Schedule setting screen (2/2) to set the second welding.
  • Page 96 MAWA-050A Modulation duty ratio = t/T x 100 [%] (e) Weld1 up/down pulse modulation ON/OFF Select whether to apply pulse modulation to the welding current in the UPS (up-slope) and DWS (down-slope) sections of the first welding. [Initial value: OFF] Waveform sample when the UPS/DWS pulse modulation is applied.
  • Page 97 MAWA-050A Schedule setting screen (2/2)  The currently selected condition No. is displayed. (k) Weld2 welding pulse modulation ON/OFF Select whether to apply the pulse modulation to the second welding current. [Initial value: OFF] Weld2 welding frequency [Hz] Set the modulation frequency of the second welding pulse. The setting range is 1 ~ 3000 [Hz].
  • Page 98 MAWA-050A (11) Monitor Select Screen This screen is used to set the data to be obtained at welding and the data to make an upper/lower limit judgment. This setting can be performed for each condition No. (a) SCH The currently selected condition No. is displayed. (b) Monitor range Set a range to make an upper/lower limit judgment of monitor value.
  • Page 99 MAWA-050A (c) Slope time Set whether to include the up-slope (UPS) section and down-slope (DWS) section in the upper/lower limit judgment. However, the upper/lower limit judgment of weld time is performed for the ranges of up-slope and down-slope. If “Exclude” is set, only the pulse current time (WEL) is displayed in the “TIME” item of the Monitor screen.
  • Page 100 MAWA-050A (12) Upper/Lower Limit Set Screen This screen is used to set a threshold value for welding OK/NG judgment from the monitor value set to PEAK or RMS in 4. (6) (d) and (e). This setting can be performed for each condition No. An OK/NG judgment by waveform is performed on the Envelope setting screen.
  • Page 101 MAWA-050A (13) SCH Copy Screen This screen is used to copy the condition setting data to an optional condition No. Copying can be performed for multiple condition numbers. The SCH copy screen is classified into 4 types, namely,  SCH copy screen,  Copy data check screen, ...
  • Page 102 MAWA-050A Copy data check screen  This screen is used to check the copy source data and copy destination data. It is possible to check the current, time and upper/lower limit value of an optional condition No. The condition No. of the displayed data is displayed. (g) WELD1 data display area The WELD1 (first welding) data is displayed.
  • Page 103 MAWA-050A Copy start check screen  This is the final check screen to start a condition copying. The condition copy is started. During the condition copy, the Copy in-process screen of  is displayed. After the copy is normally terminated, the SCH copy screen of ...
  • Page 104 MAWA-050A (14) External I/O Check Screen This screen is used to check the external input/output signal status. In the case of an ON signal, the terminal No. portion lights. When the signal is OFF, the display lamp goes out. The input/output status screen is classified into the “I/O check” screen and the “I/O check (option)”...
  • Page 105 MAWA-050A (c) Output signal operating switch Used to turn on/off output signals. Select a signal for selecting ON/OFF by “△” and “▽” to select a “ON/OFF” status. (d) Screen feed switch The I/O check (OP) screen is displayed. (e) Screen return switch The I/O check (OP) screen reappears.
  • Page 106 MAWA-050A (g) Output signal operating switch Used to turn on/off output signals. For details, refer to (c) Output signal operating switch of the I/O check screen of . (h) Screen return switch The External I/O check screen reappears. Screen feed switch The External I/O check screen is displayed.
  • Page 107 MAWA-050A (15) Count Setting Screen This screen is used to control and check the number of welding times and the amount of production. Each count value of TORCH1 and TORCH2 can be set and checked for each number. (a) SCH The condition No.
  • Page 108 MAWA-050A (16) Error History Screen This screen is used to check the errors that were caused in the past. The number of errors that can be stored is 120. The older errors exceeding this number will be deleted in order for updating. (a) SCH The condition No.
  • Page 109 MAWA-050A (17) Password Setting Screen In this welding power supply, it can be protected to go to a specific setting screen by entering a password. The following screen is used to set a password and select the validity/invalidity of the password.
  • Page 110 MAWA-050A (18) Maintenance Screen Display this screen to perform maintenance of the welding power supply. To make a gas flow rate check, the gas can be turned on and off by manual operation. To check the sequence operation without causing the welding current to flow, it can be set that the welding current output is turned on/off.
  • Page 111 MAWA-050A (19) Set Values of Each Screen at Delivery from the Factory The following table shows initial set values of each screen at delivery from the factory. When the memory was initialized on the Switch select screen, these initial values are provided. Screen Parameter Initial value...
  • Page 112 MAWA-050A Screen Parameter Initial value SCH No. (condition No.) TORCH SCH TYPE CHG (condition setting mode) FULL FST (current value) 5.00 [A] UF1 (current value) 5.00 [A] UL1 (current value) 5.00 [A] PL1 (current value) 5.00 [A] DF1 (current value) 5.00 [A] DL1 (current value) 5.00 [A]...
  • Page 113 MAWA-050A Screen Parameter Initial value Monitor value measuring range WELD1+WELD2 Slope time Exclude Monitor select Current value screen (all of condition Nos. Voltage value Upper/lower limit judgment 1 ~ 127) output Weld time Envelope WELD1 60.00 [A] Upper limit value WELD2 60.00 [A] Current value...
  • Page 114 MAWA-050A 5. Welding WARNING Do not measure the voltage by connecting a general voltmeter or oscilloscope to the output  terminal or between torch and base material. A high voltage of the start circuit is applied to the output terminal. The measuring person may receive an electric shock or the measuring apparatus may be damaged.
  • Page 115 MAWA-050A Turning on the Power Supply Turning on the power supply will be described below. 1. Turn on the source power supply on the factory side. 2. Turn ON (to the “I” side) the “Main power switch” on the front panel. The start-up screen is displayed and then the Monitor screen is displayed on the touch panel display.
  • Page 116 MAWA-050A Basic Function Setting The basic function setting of the welding power supply will be described below. Set the following basic setting items of the welding power supply on the Basic setting screen.  Device No.  Communication type and communication speed ...
  • Page 117 MAWA-050A (3) -1. Common detail item setting The detail setting of the welding power supply functions will be described below. Set the detail items that are common to each welding condition on the Switch select screen. Remarks  The Switch select screen consists of 2 pages. Displaying the Switch select screen ...
  • Page 118 MAWA-050A Welding Condition Setting (4) -1. Registering the welding conditions Registering the welding conditions will be described below. In MAWA-050A, up to 127 types of the welding condition can be registered. Register the welding conditions on the Welding conditions setting screen. Remarks ...
  • Page 119 MAWA-050A (4) -2. Welding current pulse modulation setting The welding current pulse modulation setting will be described below. Perform this welding current pulse modulation setting on the Schedule setting screen. Remarks  The welding current is determined from the set data on the Welding condition setting screen and the set data on the Schedule setting screen.
  • Page 120 MAWA-050A (4) -3. Welding condition copy Copying the welding conditions will be described below. The contents of the welding condition setting can be copied into the welding conditions of different condition Nos. Copy the welding conditions on the SCH copy screen. Displaying the SCH copy screen ...
  • Page 121 MAWA-050A Monitor Function Setting (5) -1. Monitor item setting The monitor item setting is described below. MAWA-050A judges whether the welding is OK or NG from the monitor value and the set upper/lower limit value. Set the upper/lower limit judging range and target items for the OK/NG judgment on the Monitor select screen.
  • Page 122 MAWA-050A (5) -2. Upper/lower limit value setting The upper/lower limit value setting will be described below. Set the upper/lower limit value to be used for a welding OK/NG judgment on the Upper/lower limit set screen. Remarks  For the upper/lower limit value setting to be used for OK/NG judgment using the envelope waveform, refer to “4.
  • Page 123 MAWA-050A Touch Start (6) -1. Overview The touch start function of this welding power supply is used to perform arc welding by causing the initial current to flow in the status where the electrode is in contact with a workpiece and keeping the distance from the arc discharge gap.
  • Page 124 MAWA-050A (6) -2-1. Normal mode operation The normal mode is applied when the initial current time FST (ms) on the Welding condition setting screen is set to 1 to 999 (ms). Example of the normal mode setting on the Welding condition setting screen Touch start head Electrode touch Electrode touch...
  • Page 125 MAWA-050A Operation and control flow of the normal mode Touch start head MH-TL01A, MH-109TA Welding start signal:1ST=ON : operation and control item : operation and control flow Start of moving to mid-point : interface process End of moving to mid-point Pulse TIG welding power supply Welding start signal:2ND=ON MAWA-050A(touch start)
  • Page 126 MAWA-050A (6) -2-2. Auto mode operation The auto mode is applied when the initial current time FST (ms) on the Welding condition setting screen is set to 0 (ms) and the Fine Weld Mode on the Switch select screen (1/2) is set to “OFF.” Example of the auto mode setting on the Welding condition setting screen Example of the normal mode setting on the Switch select screen Touch start head...
  • Page 127 MAWA-050A Operation and control flow of the auto mode Touch start head MH-TL01A, MH-109TA : operation and control item Welding start signal:1ST=ON : operation and control flow Start of moving to mid-point : interface process End of moving to mid-point Pulse TIG welding power supply Welding start signal:2ND=ON MAWA-050A(touch start)
  • Page 128 MAWA-050A (6) -2-3. Fine weld operation The fine weld mode is applied when the initial current time FST (ms) on the Welding condition setting screen is set to 0 (ms) and the Fine Weld Mode on the Switch select screen (1/2) is set to “ON.” Example of the fine weld mode setting on the Welding condition setting screen Example of the fine weld mode setting on the Switch select screen Touch start head...
  • Page 129 MAWA-050A Operation and control flow of the fine weld mode Touch start head MH-TL01A, MH-109TA : operation and control item Welding start signal:1ST=ON : operation and control flow Start of moving to mid-point : interface process End of moving to mid-point Pulse TIG welding power supply Welding start signal:2ND=ON MAWA-050A(touch start)
  • Page 130 MAWA-050A (6) -3. Adjustment After a start, the head goes down outputting gas for the pre-flow time. After the end of the pre-flow time, the head goes up outputting the initial current for the initial current time. After the end of the initial current time, welding is started.
  • Page 131 MAWA-050A Preparation for Starting Welding The preparation to be made before a start of welding will be described below. To perform welding, display the Monitor screen on the touch panel display. Remarks  When the Monitor screen is displayed, welding is enabled and the READY signal is output. The conditions that the READY signal is not output are as follows.
  • Page 132 MAWA-050A Checking and Registering the Envelope Waveform Data Checking and registering the envelope waveform data will be described below. The Envelope screen is displayed by pressing ENVEL on the Monitor screen. On the Envelope screen, the envelope waveform created from the resistance waveform and upper/lower limit value can be checked and also the envelope waveform can be registered.
  • Page 133 MAWA-050A Shutting off the Power Supply Shutting off the power supply will be described below. Set the “Main power switch” on the front panel to “OFF” (“O” side). The power supply is shut off. Turn off the source power supply on the factory side. 5.
  • Page 134 MAWA-050A 6. Timing Chart Touch Start (when the normal mode is set) The following is a timing chart for the case where the optional touch start head is used and the normal mode is set. Refer to 5. (6) for the normal mode. Touch start head タッチスタートヘッド...
  • Page 135 MAWA-050A The start signals 1ST and 2ND are used for welding start. Start signal 1ST decision delay time. Refer to “4. (6)  (d) START signal input decision delay time.” Welding data creating time. About 60 ms for the first condition change or about 30 ms for the second or later change. After the initial current start signal H-ST1 is input, the initial current is started after the lapse of the pre-flow set time.
  • Page 136 MAWA-050A Touch Start (when the auto mode is set) The following is a timing chart for the case where the optional touch start head is used and the auto mode is set. Refer to 5. (6) for the auto mode. Touch start head タッチスタートヘッド...
  • Page 137 MAWA-050A Set H-HEAD UP and H-END signals’ output times to 200 ms. Refer to “4. (6)  (g) [Op-IO] H-END signal output time” and “(i) [Op-IO] H-HEAD UP signal output time.” When the auto mode is set, the initial current time is the time when the head moves to weld point (main welding). However, when the time when the head moves to weld point (main welding) becomes 500 ms or longer, the ST2 time error occurs.
  • Page 138 MAWA-050A Touch Start (when the fine weld mode is set) The following is a timing chart for the case where the optional touch start head is used and the fine weld mode is set. Refer to 5. (6) for the fine weld mode. Touch start head タッチスタートヘッド...
  • Page 139 MAWA-050A Set H-HEAD UP and H-END signals’ output times to 200 ms. Refer to “4. (6)  (g) [Op-IO] H-END signal output time” and “(i) [Op-IO] H-HEAD UP signal output time.” When the fine weld mode is set, the initial current time is the time from when the head starts moving to weld point (main welding) to when the electrode tip is detached (10 to 20 ms).
  • Page 140 MAWA-050A Touch Start (when the customer-prepared motor head is used) The following is a timing chart example for the case where the customer-prepared motor head is used. Customer-prepared motor head お客様準備モータヘッド Start signal 1ST 起動信号 1ST ※1 (Start moving to (中点移動開始) mid-point) Start signal 2ND...
  • Page 141 MAWA-050A  After the H-HEAD UP signal is turned on after the lapse of the pre-flow set time, start moving the head to weld-point (main welding). After the head is moved to weld-point (main welding), turn on the start signal (H-ST2). When the initial current time setting (FST) is set to 1 to 999 ...
  • Page 142 MAWA-050A Touch Start (at occurrence of LOST) The following is a timing chart for the case where the arc stops in the process of welding. Touch start head タッチスタートヘッド Start signal 1ST 起動信号 1ST ※1 (Start moving to (中点移動開始) mid-point) Start signal 2ND 起動信号...
  • Page 143 MAWA-050A When using the optional touch start head, set H-HEAD UP and H-END signals’ output times to 200 ms. Refer to “4. (6)  (g) [Op-IO] H-END signal output time” and “(i) [Op-IO] H-HEAD UP signal output time.” When the welding current value stays 0 A for 5 ms after the welding start, it is considered as LOST and the welding control is stopped, and then the END signal is output.
  • Page 144 MAWA-050A Touch Start (air type welding head) The following is a timing chart for the case where the air type welding head is used. 1～200ms ※1 START input START入力 READY output READY出力 ※5 ※2 SYNC OUT SYNC OUT output 出力 PURGE PURGE Gas start input...
  • Page 145 MAWA-050A Torch Changeover The following is a timing chart for the case where the torch is changed over. TORCH SELECT input TORCH SELECT入力 OFF:TORCH1 ON:TORCH2 TORCH SELECT output TORCH SELECT出力 TORCH1 TORCH2 TORCH2 TORCH1 OFF:TORCH1 ON:TORCH2 READY output READY 出力 About 約10ms 10 ms...
  • Page 146 MAWA-050A Schedule Changeover The following is a timing chart for the case where the schedule is changed over. SCH1 input SCH1入力 SCH2 input SCH2入力 SCH4 input SCH4入力 SCH8 input SCH8入力 PARITY input PARITY入力 SCH1 welding SCH2 welding SCH3 welding SCH4 welding SCH1通電...
  • Page 147 MAWA-050A Option Input/Output Signals The following is a timing chart for option input/output signals (H-ORG and H-HEAD UP). H-ORG input H-ORG 入力 H-ORG output H-ORG 出力 H-READY input H-READY入力 SYNC OUT output SYNC.OUT出力 welding in process 通電中 H-HEAD UP input H-HEAD UP 入力...
  • Page 148 MAWA-050A The following a timing chart for option input/output signals (M-READY, H-STOP and H-RESET). READY output READY出力 通電開始可能状態 welding start enable status M-READY output M-READY 出力 Emergency stop 非常停止 H-STOP output H-STOP 出力 RESET input RESET 入力 H-RESET output H-RESET 出力 H-ERROR input H-ERROR入力...
  • Page 149 MAWA-050A (10) Condition No. and SCH Select Terminals ○: Closed Blank: Open Signal name SCH1 SCH2 SCH4 SCH8 SCH16 SCH32 SCH64 PARITY SCH No ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○...
  • Page 150 MAWA-050A Signal name SCH1 SCH2 SCH4 SCH8 SCH16 SCH32 SCH64 PARITY SCH No ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○...
  • Page 151 MAWA-050A Signal name SCH1 SCH2 SCH4 SCH8 SCH16 SCH32 SCH64 PARITY SCH No ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○...
  • Page 152 MAWA-050A Signal name SCH1 SCH2 SCH4 SCH8 SCH16 SCH32 SCH64 PARITY SCH No ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○...
  • Page 153 MAWA-050A 7. External Communication Function Overview If the communication connector (D-Sub 9-pin, female) on the rear panel is used, conditions can be set and monitor data and various statuses can be read out from an externally connected PC. Explanation of communication connector (D-Sub 9-pin, female) signals ...
  • Page 154 MAWA-050A Configuration For connecting only one unit  Internal resistance: ON Host computer ホストコンピュータ 内部抵抗:ON 装置No.01 Device No.01 RS232C RS485 RS232C/485変換アダプタ RS232C/485 conversion adapter For connecting multiple units  Internal Internal Internal resistance: ON resistance: OFF resistance: ON Host computer ホストコンピュータ...
  • Page 155 MAWA-050A Caution  To avoid malfunction caused by noise, keep the USB/RS485 conversion adapter more than 1 m apart from the welding power supply and torch. 7. External Communication Function...

  • Page 156: Torch No

    MAWA-050A Protocol One-way communication mode  (1) Monitor data (Monitor data is transmitted at each end of communication.) Data strings !01 001 S10: 01, 01, 015.0, 01.00, 1111.0, 020.0, 02.00, 2222.2, 100000, 111111, C D E 22222, 222 [CR][LF] Item Contents Character string Range...
  • Page 157 MAWA-050A (2) Error data Data strings !01 001 S07:E03,04, 12, 15, 17, 19, 22, 24 [CR][LF] D E F G H I Device No. Fixed 2 digits of 01 ~ 31 Condition No. Fixed 3 digits of 001 ~ 127 Command No.
  • Page 158 MAWA-050A Both-way communication mode  Error read Code: # Device No. R Condition No. S Command No. * Example: Every error data that occurred is read by the specified device No.01. Host side 0 1 * * * 0 7 : E18,E19 0 0 0 This product Data...
  • Page 159 MAWA-050A Data read Code: # Device No. R Condition No. S Command No. * Example: All the contents of data specified by command “01” of device No. “008” of the specified device No.01 are read. Host side 0 1 0 0 8 0 1 : 0 0 8 This product...
  • Page 160 MAWA-050A Data Code Table Command 01 (condition data) Data for each condition No. (Condition No.: 001 ~ 127)  Character Item Contents Range string Torch No. 01: TORCH 1 02: TORCH 2 01: FULL setting mode Condition setting mode 02: SIMPLE setting mode Initial current value (*1) WELD1 up-slope initial current (*1) WELD1 up-slope final current...

  • Page 161: Character String

    MAWA-050A Character Item Contents Range string WELD2 modulation frequency nnnn, 0000 ~ 3000 (Hz) WELD2 modulation duty ratio nnn, 10 ~ 90 (%) WELD2 slope section modulation 0: OFF 1: ON ON/OFF 05.00 ~ 09.99 (A) (in units of 0.01 A) WELD2 base current value nn.nn 10.00 ~ 50.00 (A) (in units of 0.10 A)

  • Page 162: Nnnnnn, 000000 ~ 999999 Nnnnn, 00000 ~ 60000 Nnn 000

    MAWA-050A Command 04 (envelope data) Data for each condition No. (Condition No.: 001 ~ 127)  Character Item Contents Range string 1: Set value Reference waveform selection 2: Measured value Envelope WELD1 current value upper limit nn.nn, 00.00 ~ 60.00 (A) Envelope WELD1 current value lower limit nn.nn, Envelope WELD1 voltage value upper limit...
  • Page 163 MAWA-050A Command 06 (basic setting data) Common data (Condition No.: fixed to 000)  Character Item Contents Range string 1 (*1) Power supply model nnnnnnnnn, MAWA-050A 2 (*1) CPU software version Vnn-nnn, V**-*** 3 (*1) GP panel software version Vnn-nnn, V**-*** 1: Touch start 4 (*1)
  • Page 164 MAWA-050A Character Item Contents Range string H-RESET nnn, 001 ~ 200 (ms) H-HEAD UP nnn, 001 ~ 200 (ms) 00: No input setting User input terminal 1 01: GAS FLOW 02: H-ORG User input terminal 2 03: H-HEAD UP 00: No output setting 01: GOOD 02: NG 03: END User output terminal 1 04: ERROR 05: READY...
  • Page 165 MAWA-050A Command 07 (error data) Common data (Condition No.: 000)  Error data check (data reading only: MAWA-050A → Host computer)  Character Item Contents Range string Error code 1 nnn, E01 ~ E28 Error code 2 01 ~ 28 Error code 3 01 ~ 28 Error code 4...

  • Page 166: Table Of Contents

    MAWA-050A Command 10 (welding result) Common data (Condition No.: 000)  Welding result check (data reading only: MAWA-050A → Host computer)  Welding result data by the latest welding conditions is read. Character Item Contents Range string Torch No. 01 ~ 02 Welding result 01: GOOD 02: NG 03: LOST WELD1 current...
  • Page 167 MAWA-050A Command 11 (current waveform data check) Common data (Condition No.: 000)  Resistance welding current waveform check (data reading only: MAWA-050A → Host computer)  Up to 202 points of current waveform data are transmitted with line feeds. (Line feeds are not inserted after Interval of acquisition and Number of monitor display waveform data.) Item Contents...
  • Page 168 MAWA-050A ⑪ Command 13 (current waveform data acquisition) Common data (Condition No.: 000) Resistance welding current check (data reading only: MAWA-050A → Host computer)  Up to 6002 points of current waveform data are transmitted with line feeds. (Line feeds are not inserted after Interval of acquisition and Number of waveform data.) Item Contents...
  • Page 169 MAWA-050A total number of data points may be different depending on the set time of WELD1/WELD2. Caution Since the weld time varies according to the head moving time even under the same welding conditions in the auto mode (including the fine weld mode), Interval of acquisition and Number of waveform data also vary.
  • Page 170 MAWA-050A 8. Troubleshooting Error Screen When an error occurs in the welding power supply, the Error screen will be displayed on the touch panel display. The error code, error message, condition No. at occurrence of the error, and error occurrence time after turning on the welding power supply are displayed. After removing the cause of the error, press the “RESET”...
  • Page 171 MAWA-050A Error Messages Error Error Time of Cause Corrective measure code message detection Check the emergency stop input. * The emergency stop error will be cleared in 6 seconds Emergency The emergency stop signal was after pressing the RESET At all times STOP input.
  • Page 172 MAWA-050A Error Error Time of Cause Corrective measure code message detection Perform maintenance and adjustment referring to “8. (4) The arc discharge was not Check Items when LOST Error performed or the weld time is over At a start of LOST error Has Occurred.”...
  • Page 173 MAWA-050A Error Error Time of Cause Corrective measure code message detection At an Torch2 - end “TOTAL COUNT” reached the operation Reset “TOTAL COUNT” to of counter count of “PRESET.” before zero or set “PRESET” again. reached welding Something in the external Make a connection check or EXT COMM communication data is incorrect...
  • Page 174 MAWA-050A Error other than Above If the buzzer of the main unit sounds intermittently as “bleep, bleep, bleep”, make contact with us. Check Items when LOST Error Has Occurred When an arc discharge (*1) does not occur at the time of welding start or welding modulation, etc. and a welding is not performed as preset, it is called LOST (= misfire).
  • Page 175 MAWA-050A surface of electrode where an oxide exists, an arc discharge is performed with the creeping-up, and current and voltage are put are an unstable state. When the welding current value is 15 A or less and the flow rate of argon gas is high, the temperature of electrode is low and the ionization of argon gas surrounding the electrodes does not proceed.
  • Page 176 MAWA-050A 9. Maintenance WARNING For maintenance inspection and cleaning, stop the electric supply and turn off the power  supply on the factory side except the case where no electric power is required. Put a notice of “Under inspecting operation” for other workers. If the charging part is touched carelessly, this may result in an electric shock.
  • Page 177 MAWA-050A Press “Maintenance” on the Menu screen. The Maintenance screen is displayed. Press “PURGE OFF” on the Maintenance screen. “PURGE ON” is displayed and argon gas flows for about 15 seconds. After the argon gas flow is stopped, “PURGE OFF” is automatically displayed again. If the flow rate is insufficient, check the argon gas pressure and the residual quantity.
  • Page 178 MAWA-050A Periodic Maintenance (2) -1. Monthly maintenance (2) -1-1. Cleaning the cooling fan filter IMPORTANT When the filter used in the cooling fan of the rear panel is dirty, the air flow will be deteriorated  and the internal temperature of the welding power supply will go up, thereby causing a failure. How to clean the cooling fan filter will be described below.

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