Miller XMT 350 MPa Owner's Manual
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OM-255 677C
2012−02
Processes
Multiprocess Welding
Description
Arc Welding Power Source
R
XMT 350 MPa
CC/CV Auto-Line
CE
File: MULTIPROCESS
Visit our website at
www.MillerWelds.com

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  • Page 1 OM-255 677C 2012−02 Processes Multiprocess Welding Description Arc Welding Power Source XMT 350 MPa ™ CC/CV Auto-Line File: MULTIPROCESS Visit our website at www.MillerWelds.com...
  • Page 2 We know you don’t have time to do it any other way. That’s why when Niels Miller first started building arc welders in 1929, he made sure his products offered long-lasting value and superior quality.
  • Page 3: Table Of Contents

    TABLE OF CONTENTS SECTION 1 − SAFETY PRECAUTIONS - READ BEFORE USING ....... . . 1-1.
  • Page 4 TABLE OF CONTENTS SECTION 8 − GMAW/GMAW-P/FCAW OPERATION ..........8-1.
  • Page 5 ITW Welding Products Italy S.r.l Via Privata Iseo 6/E, 20098 San Giuliano M.se, (MI) Italy declares that the product(s) identified in this declaration conform to the essential requirements and provisions of the stated Council Directive(s) and Standard(s). Product/Apparatus Identification: Product Stock Number XMT 350 MPa 907558 Council Directives: • 2006/95/EC Low Voltage •...
  • Page 7: Section 1 − Safety Precautions - Read Before Using

    SECTION 1 − SAFETY PRECAUTIONS - READ BEFORE USING som 2011−10 Protect yourself and others from injury — read, follow, and save these important safety precautions and operating instructions. 1-1. Symbol Usage DANGER! − Indicates a hazardous situation which, if Indicates special instructions.
  • Page 8 D Remove stick electrode from holder or cut off welding wire at FUMES AND GASES can be hazardous. contact tip when not in use. D Wear oil-free protective garments such as leather gloves, heavy Welding produces fumes and gases. Breathing shirt, cuffless trousers, high shoes, and a cap.
  • Page 9: Additional Symbols For Installation, Operation, And Maintenance

    1-3. Additional Symbols For Installation, Operation, And Maintenance FIRE OR EXPLOSION hazard. BATTERY EXPLOSION can injure. D Do not install or place unit on, over, or near D Do not use welder to charge batteries or jump combustible surfaces. start vehicles unless it has a battery charging D Do not install unit near flammables.
  • Page 10: California Proposition 65 Warnings

    1-4. California Proposition 65 Warnings Welding or cutting equipment produces fumes or gases This product contains chemicals, including lead, known to which contain chemicals known to the State of California to the state of California to cause cancer, birth defects, or other cause birth defects and, in some cases, cancer.
  • Page 11: Section 2 − Consignes De Sécurité − Lire Avant Utilisation

    SECTION 2 − CONSIGNES DE SÉCURITÉ − LIRE AVANT UTILISATION fre_som_2011−10 Pour écarter les risques de blessure pour vous−même et pour autrui — lire, appliquer et ranger en lieu sûr ces consignes relatives aux précautions de sécurité et au mode opératoire. 2-1.
  • Page 12 Il reste une TENSION DC NON NÉGLIGEABLE dans LE SOUDAGE peut provoquer un les sources de soudage onduleur UNE FOIS incendie ou une explosion. l’alimentation coupée. Le soudage effectué sur des conteneurs fermés tels D Arrêter les convertisseurs, débrancher le courant électrique et que des réservoirs, tambours ou des conduites peut décharger les condensateurs d’alimentation selon les instructions provoquer leur éclatement.
  • Page 13: Dangers Supplémentaires En Relation Avec L'installation, Le Fonctionnement Et La Maintenance

    ACCUMULATIONS LES BOUTEILLES peuvent exploser risquent de provoquer des blessures si elles sont endommagées. ou même la mort. Les bouteilles de gaz comprimé contiennent du gaz D Fermer l’alimentation du gaz comprimé en cas sous haute pression. Si une bouteille est endommagée, elle peut exploser.
  • Page 14: Proposition Californienne 65 Avertissements

    Les PIÈCES MOBILES peuvent RAYONNEMENT HAUTE causer des blessures. FRÉQUENCE (H.F.) risque provoquer des interférences. D Ne pas s’approcher des organes mobiles. D Ne pas s’approcher des points de coincement D Le rayonnement haute fréquence (H.F.) peut tels que des rouleaux de commande. provoquer des interférences avec les équi- pements de radio−navigation et de com- LES FILS DE SOUDAGE peuvent...
  • Page 15: Principales Normes De Sécurité

    2-5. Principales normes de sécurité Safety in Welding, Cutting, and Allied Processes, ANSI Standard Z49.1, Spectrum Way, Suite 100, Ontario, Canada L4W 5NS (phone: is available as a free download from the American Welding Society at 800-463-6727, website: www.csa-international.org). http://www.aws.org or purchased from Global Engineering Documents Safe Practice For Occupational And Educational Eye And Face Protec- (phone: 1-877-413-5184, website: www.global.ihs.com).
  • Page 16 OM-255 677 Page 10...
  • Page 17: Section 3 − Definitions

    SECTION 3 − DEFINITIONS 3-1. Warning Label Definitions Warning! Watch Out! There are possible Breathing welding fumes can be 3.3 Do not weld on drums or any closed hazards as shown by the symbols. hazardous to your health. containers. 2.1 Keep your head out of the fumes. Arc rays can burn eyes and injure Electric shock from welding electrode skin.
  • Page 18 Warning! Watch Out! There are possible hazards as shown by the symbols. Electric shock from wiring can kill. Disconnect input plug or power before working on machine. Hazardous voltage remains on input capacitors after power is turned off. Do not touch fully charged capacitors.
  • Page 19: Weee Label (For Products Sold Within The Eu)

    3-2. WEEE Label (For Products Sold Within The EU) Do not discard product (where ap- plicable) with general waste. Reuse or recycle Waste Electrical and Electronic Equipment (WEEE) by disposing at a designated collec- tion facility. Contact your local recycling office or your local distributor for further information.
  • Page 20: Section 4 − Introduction

    SECTION 4 − INTRODUCTION 4-1. Specifications RMS Amps Input at Rated Load Output, 50/60 Hz 3-Phase at Max. NEMA Load Voltages and Class I Amperage Open- Rating Input Voltage Range in Range in Circuit IP Rating 230 V 400 V 460 V Power CV Mode...
  • Page 21: Duty Cycle And Overheating

    4-4. Duty Cycle And Overheating Duty Cycle is percentage of 10 min- utes that unit can weld at rated load without overheating. If unit overheats, output stops, a Help message is displayed and cooling fan runs. Wait fifteen min- utes for unit to cool. Reduce amper- age or voltage, or duty cycle before welding.
  • Page 22: Section 5 − Installation

    SECTION 5 − INSTALLATION 5-1. Important Information Regarding CE Products (Sold Within The EU) A. Information On Electromagnetic Fields (EMF) This equipment shall not be used by the general public as the EMF limits for the general public might be exceeded during welding. This equipment is built in accordance with EN 60974−1 and is intended to be used only in an occupational environment (where the general public access is prohibited or regulated in such a way as to be similar to occupational use) by an expert or an instructed person.
  • Page 23: Selecting A Location

    5-4. Selecting a Location Lifting Handles Use handles to lift unit. Hand Cart Use cart or similar device to move Movement unit. Line Disconnect Device Do not move or operate unit Locate unit near correct input where it could tip. power supply.
  • Page 24: Weld Output Receptacles And Selecting Cable Sizes

    **Weld cable size (AWG) is based on either a 4 volts or less drop or a current density of at least 300 circular mils per ampere. ( ) = mm for metric use ***For distances longer than those shown in this guide, call a factory applications rep. at 920-735-4505 (Miller) or 1-800-332-3281 (Hobart) Ref. S-0007-J 2011−07 OM-255 677 Page 18...
  • Page 25: Remote 14 Receptacle Information

    5-6. Remote 14 Receptacle Information Socket* Socket Information 24 volts AC. Protected by supplementary protect- or CB2. 24 VOLTS AC Contact closure to A completes 24 volts AC contactor control circuit. 115 volts AC. Protected by supplementary pro- 115 VOLTS AC tector CB1.
  • Page 26: Optional Gas Valve Operation And Shielding Gas Connection

    5-8. Optional Gas Valve Operation And Shielding Gas Connection Obtain gas cylinder and chain to running gear, wall, or other station- ary support so cylinder cannot fall and break off valve. Cylinder Regulator/Flowmeter Install so face is vertical. Gas Hose Connection GAS IN Fitting has 5/8-18...
  • Page 27: Electrical Service Guide

    5-9. Electrical Service Guide Elec Serv 2011− NOTICE − INCORRECT INPUT POWER can damage this welding power source. Phase to ground voltage shall not exceed +10% of rated input voltage. NOTICE − Actual input voltage should not be 10% less than minimum and/or 10% more than maximum input voltages listed in table. If actual input voltage is outside this range, output may not be be available.
  • Page 28: Connecting 3-Phase Input Power

    5-10. Connecting 3-Phase Input Power Installation must meet all National and Local Codes − have only quali- fied persons make this installation. Disconnect and lockout/tagout in- put power before connecting input conductors from unit. Always connect green or green/ yellow conductor to supply grounding terminal first, and nev- = GND/PE Earth Ground er to a line terminal.
  • Page 29: Section 6 − General Operation

    SECTION 6 − GENERAL OPERATION 6-1. Front Panel Ref. 804 772-A / 316.029.725-A 12 Remote PC Interface Weld process operation sections de- The meters display the actual weld output 13 Setup Button scribe functionality of the identified items. values after arc initiation and remains dis- played for approximately three seconds 14 Gas Type Indicator Remote 14 Receptacle...
  • Page 30: Mode Switch Settings

    6-2. Mode Switch Settings Switch Position Process Output Control Panel Adjust Remote Adjust Scratch Start TIG GTAW Electrode Hot Amps % Panel Amps* Lift-Arc TIG GTAW Electrode Hot Amps % Panel Amps* GTAW Remote 14 Amps % Panel Amps GMAW Remote 14 Volts Volts...
  • Page 31: Configuration Option Menu

    6-3. Configuration Option Menu 316.029.725-A Mode Switch Setup Right Displays. SET−UP will be displayed momentarily. Remote 14 Receptacle The Configuration Option Menu provides a Configuration options are displayed in the Left Left Display means to customize some machine features Display. Settings are displayed in the Right Right Display for desired operation.
  • Page 32 The XMT 350 MPa and synergic feeders allow single knob control of the arc. As wirefeed speed is increased or decreased, the pulse parameters increase or de- crease matching the power output to the wire speed.
  • Page 33: Section 7 − Gtaw Operation

    Configuration Option Menu (Continued) Revision Information INFO This option identifies the unit’s weld library (INFO LIB) and firmware revision (INFO REV). Press the Setup Button while the unit is display- ing INFO LIB to identify the unit’s weld library. Press the Setup Button while the unit is display- ing INFO REV to identify the unit’s firmware revi- sion.
  • Page 34: Scratch Start Tig Welding Mode - Gtaw Process

    7-2. Scratch Start TIG Welding Mode - GTAW Process 7 2. 0 316.029.725-A Setup Operation Weld terminals are energized at all times in Scratch Start TIG welding The Adjust Control is used to set desired For typical system connections refer to mode.
  • Page 35: Lift-Arc Tig Welding Mode - Gtaw Process

    7-3. Lift-Arc TIG Welding Mode - GTAW Process 1 3. 5 316.029.725-A 1 − 2 “Touch” Seconds Do NOT Strike Like A Match! Rotate Mode Switch to LIFT-ARC TIG posi- welding, momentarily depress output Weld terminals are energized at all tion as shown.
  • Page 36: Tig Welding Mode - Gtaw Process

    7-4. TIG Welding Mode - GTAW Process 316.029.725-A Setup Operation Weld terminals energized through the remote control in TIG For typical system connections refer to The Adjust Control is used to set desired welding mode. Section 7-1. preset amperage. Rotate Mode Switch to TIG position as A remote control is required to turn on the Mode Switch shown.
  • Page 37: Section 8 − Gmaw/Gmaw-P/Fcaw Operation

    SECTION 8 − GMAW/GMAW-P/FCAW OPERATION 8-1. Typical Connection For Remote Control Feeder GMAW/GMAW-P/FCAW Process 804 938-A Workpiece Use of shielding gas is dependant on Wire Turn off power before making Type. connections. Remote 14-Receptacle The connection diagram illustrates Wire Feeder DCEP (reverse polarity) suitable for all Positive (+) Weld Output Terminal wires except self-shielded FCAW.
  • Page 38: Mig Welding Mode - Gmaw/Fcaw Process

    8-2. MIG Welding Mode - GMAW/FCAW Process 25.0 316.029.725-A Press the Setup Button to confirm the Weld terminals energized The preset voltage can be adjusted re- selection. The unit will acknowledge a through the remote control in MIG motely at the wire feeder if the feeder change of wire and gas information by dis- welding mode.
  • Page 39: Mig - Wire And Gas Selection Table

    8-3. MIG - Wire and Gas Selection Table WIRE TYPES** GAS TYPES DEFAULT INDUCTANCE .035 (0.9) STL ARGN CO2 (ARGON / CARBON DIOXIDE) .045 (1.2) STL ARGN OXY (ARGON / OXYGEN) .052 (1.4) STL Steel .035 (0.9) STL CO2 (CARBON DIOXIDE) .045 (1.2) STL .035 (0.9) FCAW .045 (1.2) FCAW...
  • Page 40: Pulsed Mig Welding Mode - Gmaw-P Process

    8-4. Pulsed MIG Welding Mode - GMAW-P Process 25.0 316.029.725-A Pulsed MIG − Wire and Gas Selection Arc Length - Pulsed MIG Manual Control Weld terminals energized Table for available wires and gases (see Section 6-3) through the remote control in (see Section 8-5).
  • Page 41: Pulsed Mig - Wire And Gas Selection Table

    8-5. Pulsed MIG - Wire and Gas Selection Table WIRE TYPES* GAS TYPES .035 (0.9) STL ARGN CO2 (ARGON / CARBON DIOXIDE) Steel .045 (1.2) STL ARGN OXY (ARGON / OXYGEN) .045 (1.2) MCOR Metal Core ARGN CO2 (ARGON / CARBON DIOXIDE) .052 (1.4) MCOR TRI MIX (TRI-GAS MIXTURE) .035 (0.9) SSTL...
  • Page 42: Remote Process Select

    8-6. Remote Process Select This power source can be used with wire feeders that support Remote Process Se- lect. This feature allows the operator to switch the active welding process between MIG and Pulsed MIG at the wire feeder. To determine if the welding system is Remote Process Select capable, connect the wire feeder to the power source and review the...
  • Page 43: Typical Connection For Voltage-Sensing Feeder Gmaw/Gmaw-P/Fcaw Process

    8-7. Typical Connection For Voltage-Sensing Feeder GMAW/GMAW-P/FCAW Process Turn off power before mak- ing connections. Positive (+) Weld Output Terminal Negative (−) Weld Output Terminal Ground Cable to Workpiece Workpiece Voltage Sensing Clamp Gun Trigger Receptacle Wire Feeder Gas Hose 10 Gas Cylinder Use of shielding gas is dependant on Wire Type.
  • Page 44: V-Sense Feeder Welding Mode - Gmaw/Fcaw Process

    8-8. V-Sense Feeder Welding Mode - GMAW/FCAW Process 25.0 316.029.725-A Operation Rotate Adjust Control to select desired gas. Weld terminals are energized at all times in V-Sense Feeder welding While the Volts Indicator is lit under the Left Press the Setup Button again to confirm the mode.
  • Page 45: V-Sense Feeder Welding Mode - Gmaw-P Process

    8-9. V-Sense Feeder Welding Mode - GMAW-P Process 25.0 R200 316.029.725-A ment of Arc Control, Wire Type, Gas Type Higher settings narrow the arc cone, re- Weld terminals are energized at all and Arc Length. duces puddle fluidity and crowns the weld times in V-Sense Feeder welding bead appearance.
  • Page 46: Section 9 − Smaw/Cac-A Operation

    SECTION 9 − SMAW/CAC-A OPERATION 9-1. Typical Connection For SMAW And CAC-A Process Turn off power before mak- ing connections. Electrode Holder (Carbon Arc) For CAC-A process connect car- bon arc cutting torch to to positive weld output terminal. Electrode Holder Positive (+) Weld Output Terminal Remote 14 Receptacle...
  • Page 47: Stick Remote Welding Mode - Smaw/Cac-A Process

    9-2. Stick Remote Welding Mode - SMAW/CAC-A Process 316.029.725-A Press the Setup Button repeatedly until the Weld terminals energized If the remote control has an amperage Arc Control light goes out to return to ad- through the remote control in Stick adjustment, the adjustment will func- justment of preset amperage.
  • Page 48: Stick Hot Welding Mode - Smaw/Cac-A Process

    9-3. Stick Hot Welding Mode - SMAW/CAC-A Process 7 2. 0 316.029.725-A Right Display, the Adjust Control is used to Programmable Hot Start Weld terminals are energized at all set desired preset amperage. times in Stick Hot welding mode. Press the Setup button repeatedly until Pressing the Setup Button allows adjust- Mode Switch HOT.S appears on the left display.
  • Page 49: Section 10 − Maintenance & Troubleshooting

    SECTION 10 − MAINTENANCE & TROUBLESHOOTING 10-1. Routine Maintenance Disconnect power Maintain more often before maintaining. during severe conditions. 3 Months Repair Or Replace Replace Cracked Replace Damaged Or Torch Body Cracked Unreadable Cables Labels Repair Or Replace Cracked Cables And Cords Clean Tighten Weld...
  • Page 50: Help Displays

    10-3. Help Displays All directions are in reference to the front of the unit. All circuitry referred to is lo- cated inside the unit. Help 1 Display HELP Indicates a malfunction in the primary power circuit. If this display is shown, contact a Fac- tory Authorized Service Agent.
  • Page 51: Troubleshooting

    10-4. Troubleshooting Trouble Remedy No weld output; unit completely inop- Place line disconnect switch in On position (see Section 5-10). erative. Check and replace line fuse(s), if necessary, or reset circuit breaker (see Section 5-10). Check for proper input power connections (see Section 5-10). No weld output;...
  • Page 52: Section 11 − Electrical Diagram

    SECTION 11 − ELECTRICAL DIAGRAM Figure 11-1. Circuit Diagram OM-255 677 Page 46...
  • Page 53 252 423-A OM-255 677 Page 47...
  • Page 54: Section −12 − Parts List

    SECTION −12 − PARTS LIST Ref. 244 004-B Figure 12-1. Parts Assembly OM-255 677 Page 48...
  • Page 55 Item Dia. Part Mkgs. Description Quantity Figure 12-1. Parts Assembly ....216 034 Wrapper W/Insulators ......... . .
  • Page 56 Item Dia. Part Mkgs. Description Quantity Figure 12-1. Parts Assembly (Continued) ... . . 604 176 Rcpt, Str Dx Grd 2P3W 15A 125V *5−15R ......
  • Page 57 Item Dia. Part Mkgs. Description Quantity Figure 12-1. Parts Assembly (Continued) ♦218 183 ....Rcpt Assy, Tw Lk Insul Fem (Tweco Type) (Fac-op) (Includes) ..
  • Page 58 Notes SOCKET/WRENCH SELECTION TABLE SOCKET/WRENCH SELECTION TABLE (U.S. STANDARD) (METRIC) Specifications Socket or Wrench Size Specifications Socket or Wrench Size U.S. Bolt Decimal Bolt Bolt Decimal Bolt Diameter Equivalent Diameter Equivalent 1/4 in .250 in 3/8 in 7/16 in 6 mm .2362 in 10 mm 10 mm...
  • Page 59 Effective January 1, 2012 (Equipment with a serial number preface of MC or newer) This limited warranty supersedes all previous Miller warranties and is exclusive with no other guarantees or warranties expressed or implied. LIMITED WARRANTY − Subject to the terms and conditions 90 Days —...
  • Page 60 File a claim for loss or damage during Phone: 39 (0) 2982901 Fax: 39 (0) 298290-203 shipment. email: miller@itw−welding.it For assistance in filing or settling claims, contact your distributor and/or equipment manufacturer’s Transportation Department. © ORIGINAL INSTRUCTIONS − PRINTED IN USA 2012 Miller Electric Mfg. Co. 2012−01...

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