Amada HF2 User manual

990-057 REV S
INVERTER WELDING POWER SUPPLY
HF2/HF2S
OPERATION MANUAL

2 KHZ INVERTER WEDLING POWER SUPPLY
ii 990-057

1998 – 2021 AMADA WELD TECH INC.
The engineering designs, drawings and data contained herein are the proprietary work of
AMADA WELD TECH and may not be reproduced, copied, exhibited or otherwise used
without the written authorization of AMADA WELD TECH.
Printed in the United States of America.
REVISION RECORD
Revision EO Date Basis of Revision
A ENRG-RLSE 03/95 Released original manual.
B None 09/95 Reorganize manual into chapters.
C None 01/96 Amend to Firmware V1.17 or higher.
D None 02/96 Update cover stock numbers
E None 04/97 Amend to Firmware V1.19 or higher.
F 17472 06/98
1. Remove existing calibration procedure and reference User Calibration
Procedure 994-001.
2. Miscellaneous corrections.
3. Remove SAVE error.
G 18951 08/01 1. Include EO# 17693 in manual.
2. Add latest version of Operator Guide.
H 19012 09/01 1. Include EO# 118951 in manual.
2. Add latest version of Operator Guide.
J 19146 01/02
1. Include EO# 19012.
2. Miscellaneous Corrections.
3. Add Appendix F, Quality Resistance Welding Solutions, and Appendix
G, Replacement of Programmed Integrated Circuits.
K 20016 05/04 Updated wire data.
L N/A N/A N/A
M 42009 06/12 Updated to Miyachi Unitek format and updated RS-
485 connection
information.
N 42840 10/13 Updated to Miyachi America name and logo.
P 43479 11/14 Updated to Amada Miyachi America name and logo.
Q 43808 08/15 Updated to Amada Miyachi America format.
R 45804 04/20 Update Company Name (Amada Weld Tech)
S 46311 04/21 See ECO for Details

2 KHZ INVERTER WEDLING POWER SUPPLY
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FOREWORD
Thank you for purchasing an AMADA WELD TECH - HF2 - 2kHz High Frequency Inverter Welding
Power Supply. For the rest of this manual, the HF2 will be referred to simply as the Power Supply.
Upon receipt of your equipment, please thoroughly inspect it for shipping damage prior to its installation.
Should there be any damage, please immediately contact the shipping company to file a claim, and notify
us at:
AMADA WELD TECH INC.
1820 South Myrtle Avenue
Monrovia, CA 91017-7133
Telephone: [phone]
FAX: [phone]
e-mail: [e-mail]
The purpose of this manual is to provide the information required for proper and safe operation and
maintenance of the AMADA WELD TECH - HF2 - 2kHz High Frequency Inverter Welding Power
Supply.
We have made every effort to ensure that the information in this manual is both accurate and adequate.
The contents of this manual are subject to change without notice. Should questions arise, or if you have
suggestions for improvement of this manual, please contact us at the above location/numbers.
AMADA WELD TECH is not responsible for any loss or injury due to improper use of this product.
The contents of this manual apply to the following models:
AMADA WELD TECH
Model AWTA P/N
HF2/230 1-264-0x
HF2/280 1-264-0x-01
HF2/460 1-264-0x-02
HF2/208
1-264-0x-03
HF2S/230 1-265-0x
HF2S/380 1-265-0x-01
HF2S/460 1-265-0x-02
HF2S/208 1-265-0x-03

2 KHZ INVERTER WEDLING POWER SUPPLY
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CONTENTS
Page
CHAPTER 1: DESCRIPTION
HF2 description........................................................................................................................................1-1
CHAPTER 2: GENERAL SET-UP
Required Connections..............................................................................................................................2-1
Physical Space Requirements...........................................................................................................2-1
HF2 Welding Power Supply Dimensions.........................................................................................2-1
HF2 Welding Transformer Dimensions ...........................................................................................2-1
Power Line Voltage, Current, and Wire Size Requirements............................................................2-2
Insulation Requirements ..................................................................................................................2-2
Power Line Fuse Requirements........................................................................................................2-2
HF2 Welding Transformer Electrical Specifications ....................................................................... 2-3
HF2 Welding System Maximum Secondary Loop Resistance......................................................... 2-4
HF2 Maximum Secondary Loop Resistance Measurement .............................................................2-4
HF2 Welding Power Supply to HF2 Welding Transformer Connections........................................2-4
HF2 Welding Transformer to Weld Head Connections................................................................... 2-5
Weld Sentry Option.......................................................................................................................... 2-5
Help Screen Languages ....................................................................................................................2-5
CHAPTER 3: WELDING SYSTEM SET-UP
Welding System Set-Up Guide................................................................................................................3-1
General Programming Instructions..........................................................................................................3-1
AMADA WELD TECH Force Fired, Foot Actuated Weld Head System..............................................3-2
Weld Head Set-Up............................................................................................................................ 3-2
Firing Switch Cable Connection....................................................................................................... 3-2
Quick Start Programming Guide .....................................................................................................3-2
AMADA WELD TECH Force Fired, Single Air Actuated Weld Head System.....................................3-4
Weld Head Set-Up............................................................................................................................ 3-4
Firing Switch Cable Connection....................................................................................................... 3-4
Weld Head Valve Driver No. 1 Connection.....................................................................................3-4
Foot Switch Connection ................................................................................................................... 3-4
Single Air Regulator Adjustment (TL-080B Series Weld Heads) ................................................... 3-5
Dual Air Regulator Adjustments (TL-180B Weld Heads)...............................................................3-6
Quick Start Programming Guide...................................................................................................... 3-6

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CONTENTS (Continued) Page
CHAPTER 3: WELDING SYSTEM SET-UP (Continued)
AMADA WELD TECH Force Fired, Dual Air Actuated Weld Head System .......................................3-7
General Information..........................................................................................................................3-7
Power Supply, Jumper Modifications............................................................................................... 3-7
Weld Head Set-Up............................................................................................................................ 3-8
Firing Switch Cable Connection....................................................................................................... 3-9
Weld Head Valve Driver Connections ............................................................................................3-9
Foot Switch Connection ................................................................................................................... 3-9
Dual Air Regulator Adjustment......................................................................................................3-10
Quick Start Programming Guide.................................................................................................... 3-14
Non-Force Fired, Single Air or Cam Actuated Weld Head System...............................................3-16
PLC to Power Supply Electrical Connections ...............................................................................3-16
PLC Timing Diagram.....................................................................................................................3-17
Quick Start Programming Guide ....................................................................................................3-17
CHAPTER 4: CONTROLS
Power Supply Front Panel ......................................................................................................................4-1
Power Supply - Rear Panel Inputs and Outputs....................................................................................... 4-3
Power................................................................................................................................................ 4-3
Fuses F1, F2 .....................................................................................................................................4-3
Sensing Port .....................................................................................................................................4-3
Sensing Port - Connector Pin Assignments ....................................................................................4-4
Output ..............................................................................................................................................4-4
Foot Switch Connector ....................................................................................................................4-5
Single-Level Foot Switch .........................................................................................................4-5
Two-Level Foot Switch ............................................................................................................4-5
Firing Switch Operation ..........................................................................................................................4-6
Mechanical Firing Switch Cable .....................................................................................................4-6
Optical Firing Switch Connector .....................................................................................................4-6
Mechanical Firing Switch - 3-Wire Connection ..............................................................................4-7
Opto-coupler Firing Switch - 3-Wire Connection ........................................................................... 4-7
Control Signals Connector ...............................................................................................................4-7
Control Signals - Pin Assignments ..................................................................................................4-8
Control Signals - Remote Weld Schedule Selection Input .............................................................. 4-9
Control Signals - Emergency Stop Input .........................................................................................4-9
Control Signals - Process Inhibit Input ............................................................................................ 4-9
Control Signals - Output Relays ....................................................................................................4-10
Relay K1 ........................................................................................................................................ 4-10
Relay K2 ........................................................................................................................................ 4-10
Accessory Port ...............................................................................................................................4-10
Air Valve 1 and Air Valve 2 Driver Connectors .................................................................................. 4-11
Air Valve 1 Driver ......................................................................................................................... 4-11
Air Valve 2 Driver ......................................................................................................................... 4-11

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CONTENTS (Continued) Page
CHAPTER 5: PROGRAMMING MODES
Help Screens ..........................................................................................................................................5-1
Machine States ........................................................................................................................................5-1
Weld Graph Run State............................................................................................................................. 5-1
Basic Weld Monitor Run State................................................................................................................5-2
Alphanumeric Run State..........................................................................................................................5-2
No Weld State ......................................................................................................................................... 5-2
Standby State ..........................................................................................................................................5-2
Alarm State ............................................................................................................................................. 5-3
Fire State .................................................................................................................................................5-3
Menu State ..............................................................................................................................................5-3
Program State .......................................................................................................................................... 5-4
Weld Graph Program State .....................................................................................................................5-4
Alphanumeric Program State ..................................................................................................................5-5
Output Relays ..........................................................................................................................................5-6
Relay 1 - Dual Air Head Operation ........................................................................................................5-7
CHAPTER 6: ADVANCED WELDING FUNCTIONS
Weld Functions .......................................................................................................................................6-1
Basic Weld .............................................................................................................................................6-2
Weld / Repeat ..........................................................................................................................................6-3
Quench/Temper .......................................................................................................................................6-4
Pre/Postheat ............................................................................................................................................ 6-5
Up/Down Slope .......................................................................................................................................6-7
Braze .................................................................................................................................................. 6-8
Rollspot ..................................................................................................................................................6-9
Seam ................................................................................................................................................6-10
Dual Pulse .............................................................................................................................................6-12
Pulsation ................................................................................................................................................6-13
CHAPTER 7: SPECIAL FEATURES
System Options .......................................................................................................................................7-1
Weld Counter ..........................................................................................................................................7-8
Copy a Schedule .....................................................................................................................................7-9
System Security ......................................................................................................................................7-9
System Help .........................................................................................................................................7-11
Weld Sentry ..........................................................................................................................................7-11
Calibrate the Power Supply ..................................................................................................................7-11
Reset to Defaults ...................................................................................................................................7-11
Installation .............................................................................................................................................7-13
Transformer Model ...............................................................................................................................7-13

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CONTENTS (Continued) Page
CHAPTER 8: WELD MONITORING
Basic Weld Monitor General Description................................................................................................ 8-1
Weld Current and Weld Voltage Measurements ....................................................................................8-2
Data Output Capabilities .........................................................................................................................8-2
Weld Monitoring Suggestions .................................................................................................................8-2
Basic Weld Monitor Programming..........................................................................................................8-3
Energy Limit Monitor General Description............................................................................................. 8-4
Energy Limit Monitor Programming.......................................................................................................8-5
APPENDIX A: TECHNICAL SPECIFICATIONS ........................................................................ A-1
APPENDIX B: RS-485 CONNECTION ............................................................................................B-1
APPENDIX C: RECOMMENDED SPARE PARTS .......................................................................C-1
APPENDIX D: ALARM MESSAGES................................................................................................ D-1
APPENDIX E: HELP SCREEN LANGUAGES ..............................................................................E-1
APPENDIX F: REPLACEMENT OF PROGRAMMED INTEGRATED CIRCUITS ...............F-1
APPENDIX G: THE BASICS OF RESISTANCE WELDING........................................................ G-1
APPENDIX H: QUALITY RESISTANCE WELDING SOLUTIONS:
DEFINING THE OPTIMUM PROCESS ........................................................................... H-1

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SAFETY NOTES
General
This instruction manual describes the operation and maintenance of the Power Supply and
provides instructions relating to its safe use. Procedures described in this manual must be
performed as detailed by Qualified and Trained personnel.
For Safety, and to effectively take advantage of the full capabilities of the Power Supply,
please read this instruction thoroughly before attempting to use it.
After reading this manual, retain it for future reference when any questions arise regarding
the proper and safe operation of the Power Supply.
Operation
Procedures other than those described in this manual or not performed as prescribed in this
manual, may expose personnel to electrical shock or DEATH.
When operating any welder, always wear appropriate personal protective gear.
Maintenance/Service
Use the appropriate tools for terminating the connecting cables, being careful not to nick
the wire conductors.
Do not modify the Power Supply without prior written approval from AMADA WELD
TECH.
DANGER
DEATH ON CONTACT may result if personnel fail to observe the safety
precautions labeled on the equipment and noted in this manual.
Contact with high voltages present in this Power Supply may cause serious
or fatal injuries. Please read the manual completely and note all cautions and
warnings before attempting to install, operate or maintain the Power Supply.
WARNING
Always wear safety glasses when welding to avoid eye injuries.

2 KHZ INVERTER WEDLING POWER SUPPLY
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SAFETY PRECAUTIONS
•These precautions are given for safe use of
the Power Supply and for prevention of
injury to operators or others.
•Be sure to read each of the instructions, as
they are all important for safe operation.
•The meanings of the words and symbols
are as follows:
DANGER
DO NOT TOUCH THE INSIDE OF THE
POWER SUPPLY UNNECESSARILY.
High Voltages are present
inside the Power Supply Enclosure. Do not touch the inside of
the
Power Supply unnecessarily with the power turned ON. You may receive an electric
shock. When inspecting the inside of the
Power Supply, be sure to turn the power source
OFF and push and hold the DISCHARGE switch until the CHARGE light goes OFF.
NEVER DISASSEMBLE, REPAIR, OR MODIFY THE
POWER SUPPLY.
These actions can cause electric shock and fire. Do
not do anything other than the
ma
intenance described in the Operator Manual.

2 KHZ INVERTER WEDLING POWER SUPPLY
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WARNING
Do NOT put your hands or fingers between the electrodes.
When welding, keep your hands and fingers away from the electrodes.
Do NOT touch any welded part or electrode during, or just after welding.
The welded parts and electrodes are very hot. If you touch them you will be burned.
Ground the equipment.
If the equipment is not grounded, you may get an electric shock.
Use a ground fault breaker.
Use a ground fault breaker to prevent an electric shock.
Only use specified cables.
A cable with insufficient capacity or loose connections can cause electric shock or fire.
Do NOT use a damaged power cable, connecting cables, or plugs.
Do not step on, twist, or tense any cable. The power cable and connecting cables may be
damaged which can cause electric shock, short circuit, or fire. If any part needs to be repaired
or replaced, consult AMADA WELD TECH or your distributor.
Stop operation if any trouble occurs.
If you detect a burning smell, abnormal sounds, abnormal heat, smoke, etc., turn power OFF
immediately to prevent fire or electric shock. Contact AMADA WELD TECH or your distributor
for help.
People with pacemakers MUST stay away from the Power Supply.
When the Power Supply is operating, it generates a magnetic field, which adversely affects
pacemakers. People who use a pacemaker must not approach the Power Supply, or walk
around the welding shop while the Power Supply is operating, unless their medical doctor
has deemed it safe to do so.
Wear protective gear.
Put on protective gear such as protective gloves, long sleeved jacket, and leather apron to
avoid being burned.

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CAUTION
Apply the specified source voltage.
Applying the wrong voltage can cause fire and electrical shock.
Keep water and water containers away from the Power Supply.
Water spilled on the Power Supply can cause a short circuit, electrical shock, or fire.
Use proper tools (wire strippers, pressure wire connectors, etc.) for terminations of
the connecting cables.
Do not nick the wire conductor. Doing so can cause a short circuit, electric shock, or fire.
Install the Power Supply on a firm, level surface.
Injury may result if the Power Supply falls over or drops from an uneven surface.
Keep combustible matter away from the Power Supply.
Spatter can ignite combustible materials. If you cannot remove all combustible materials,
cover them with a non-combustible material.
Do NOT cover the Power Supply with a blanket, cloth, etc.
Heat generated by the operating Power Supply may ignite a blanket or cover.
Wear ear protectors.
Loud noises can damage hearing.
Keep a fire extinguisher nearby.
Make sure there is a fire extinguisher in or near the welding shop in case of fire.
Regularly inspect and maintain the Power Supply.
Regular inspection and maintenance is essential to safe operation and long life of the
equipment. If you see any damage, make necessary repairs before operation.
Disposal
Properly handle and dispose of used materials.
For the disposal of electronic waste please contact AMADA WELD TECH.

2 KHZ INVERTER WEDLING POWER SUPPLY
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LIMITED WARRANTY
GENERAL TERMS AND CONDITIONS FOR THE SALE OF GOODS
1. Applicability.
(a) These terms and conditions of sale (these “Terms”) are the only terms which govern the sale of the goods (“Goods”) by Amada Weld Tech Inc. (“Seller”)
to the buyer identified in the Sales Quotation and/or Acknowledgment (as each defined below) to which these Terms are attached or incorporated by
reference (“Buyer”). Notwithstanding anything herein to the contrary, if a written contract signed by authorized representatives of both parties is in
existence covering the sale of the Goods covered hereby, the terms and conditions of said contract shall prevail to the extent they are inconsistent with
these Terms.
(b) The accompanying quotation of sale (the “Sales Quotation”) provided to Buyer, and/or sales order acknowledgement (“Acknowledgement”) and these
Terms (collectively, this “Agreement”) comprise the entire agreement between the parties, and supersede all prior or contemporaneous understandings,
agreements, negotiations, representations and warranties, and communications, both written and oral. For clarification, after the Acknowledgement is
received by Buyer, the order for Goods is binding and cannot be cancelled by Buyer for any reason and the full purchase price amount set forth in the
Acknowledgement shall be due and payable by Buyer to Seller pursuant to the payment schedule set forth in the Acknowledgement unless otherwise agreed
to in writing by Seller. All terms and conditions contained in any prior or contemporaneous oral or written communication which are different from, or in
addition to, the terms and conditions in this Agreement are hereby rejected and shall not be binding on Seller, whether or not they would materially alter
this Agreement. These Terms prevail over any of Buyer’s terms and conditions of purchase regardless whether or when Buyer has submitted its purchase
order or such terms. Fulfillment of Buyer’s order does not constitute acceptance of any of Buyer’s terms and conditions and does not serve to modify or
amend these Terms. Notwithstanding anything herein to the contrary, all orders for Goods must be for a minimum purchase price of $100 or such orders
will be rejected by Seller.
2. Delivery.
(a) The Goods will be delivered within a reasonable time after Seller provides Buyer the Acknowledgment, subject to availability of finished Goods. Seller
will endeavor to meet delivery schedules requested by Buyer, but in no event shall Seller incur any liability, consequential or otherwise, for any delays or
failure to deliver as a result of ceasing to manufacture any product or any Force Majeure Event. Delivery schedules set forth in the Acknowledgment are
Seller’s good faith estimate on the basis of current schedules. In no event shall Seller be liable for special or consequential damages resulting from failure
to meet requested delivery schedules.
(b) Unless otherwise agreed in writing by the parties in the Acknowledgement, Seller shall deliver the Goods to Seller’s plant in Monrovia, CA, USA (the
“Shipping Point”) using Seller’s standard methods for packaging and shipping such Goods. Buyer shall take delivery of the Goods within three (3) days of
Seller’s written notice that the Goods have been delivered to the Shipping Point. Buyer shall be responsible for all loading costs (including freight and
insurance costs) and provide equipment and labor reasonably suited for receipt of the Goods at the Shipping Point. Seller shall not be liable for any delays,
loss or damage in transit.
(c) Seller may, in its sole discretion, without liability or penalty, make partial shipments of Goods to Buyer, if applicable. Each shipment will constitute a
separate sale, and Buyer shall pay for the units shipped whether such shipment is in whole or partial fulfillment of Buyer’s purchase order.
(d) If for any reason Buyer fails to accept delivery of any of the Goods on the date fixed pursuant to Seller’s notice that the Goods have been delivered at
the Shipping Point, or if Seller is unable to deliver the Goods at the Shipping Point on such date because Buyer has not provided appropriate instructions,
documents, licenses or authorizations: (i) risk of loss to the Goods shall pass to Buyer; (ii) the Goods shall be deemed to have been delivered; and (iii) Seller,
at its option, may store the Goods until Buyer picks them up, whereupon Buyer shall be liable for all related costs and expenses (including, without limitation,
storage and insurance).
3. Non-delivery.
(a) The quantity of any installment of Goods as recorded by Seller on dispatch from Seller’s place of business is conclusive evidence of the quantity received
by Buyer on delivery unless Buyer can provide conclusive evidence proving the contrary.
(b) Seller shall not be liable for any non-delivery of Goods (even if caused by Seller’s negligence) unless Buyer gives written notice to Seller of the non-delivery
within three (3) days of the date when the Goods would in the ordinary course of events have been received.
(c) Any liability of Seller for non-delivery of the Goods shall be limited to (in Seller’s sole discretion) replacing the Goods within a reasonable time or adjusting
the invoice respecting such Goods to reflect the actual quantity delivered.
4. Shipping Terms. Unless indicated otherwise in the Acknowledgment, Delivery shall be made EXW (Incoterms 2010), Shipping Point, including without
limitation, freight and insurance costs. If no delivery terms are specified on the Acknowledgement, the method of shipping will be in the sole discretion of
Seller. Unless directed in writing otherwise by Buyer, full invoice value will be declared for all shipments.
5. Title and Risk of Loss. Title and risk of loss passes to Buyer upon delivery of the Goods at the Shipping Point. As collateral security for the payment of the
purchase price of the Goods, Buyer hereby grants to Seller a lien on and security interest in and to all of the right, title and interest of Buyer in, to and under
the Goods, wherever located, and whether now existing or hereafter arising or acquired from time to time, and in all accessions thereto and replacements
or modifications thereof, as well as all proceeds (including insurance proceeds) of the foregoing. The security interest granted under this provision
constitutes a purchase money security interest under the California Commercial Code.
6. Amendment and Modification. These Terms may only be amended or modified in a writing which specifically states that it amends these Terms and is
signed by an authorized representative of each party.

2 KHZ INVERTER WEDLING POWER SUPPLY
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7. Inspection and Rejection of Nonconforming Goods.
(a) Buyer shall inspect the Goods within two (2) days of receipt (“Inspection Period”). Buyer will be deemed to have accepted the Goods unless it notifies
Seller in writing of any Nonconforming Goods during the Inspection Period and furnishes such written evidence or other documentation as required by
Seller. “Nonconforming Goods” means only the following: (i) product shipped is different than identified in Buyer’s Acknowledgement; or (ii) product’s label
or packaging incorrectly identifies its contents. Notwithstanding the foregoing, for shipped Goods that require field installation, the “re-verification” terms
in the Acknowledgement shall apply and for custom installations, the inspection and verification shall take place at Buyer’s site immediately after the
installation is completed.
(b) Seller will only accept Nonconforming Goods that are returned under Seller’s Return Material Authorization procedures then in effect (“RMA”). Buyer
shall obtain a RMA number from Seller prior to returning any Nonconforming Goods and return the Nonconforming Goods prepaid and insured to Seller at
1820 South Myrtle Avenue, Monrovia, CA 91016 or to such other location as designated in writing by Seller for the examination to take place there. If Seller
reasonably verifies Buyer’s claim that the Goods are Nonconforming Goods and that the nonconformance did not developed by use from Buyer, Seller shall,
in its sole discretion, (i) replace such Nonconforming Goods with conforming Goods, or (ii) credit or refund the Price for such Nonconforming Goods pursuant
to the terms set forth herein. Notwithstanding the foregoing, the only remedy for Nonconforming Goods that are custom systems is repair (not refund or
replacement). No returns for Nonconforming Goods are allowed after thirty (30) days from the original shipping date.
(c) Buyer acknowledges and agrees that the remedies set forth in Section 7(a) are Buyer’s exclusive remedies for the delivery of Nonconforming Goods.
Except as provided under Section 7(a) and Section 14, all sales of Goods to Buyer are made on a one-way basis and Buyer has no right to return Goods
purchased under this Agreement to Seller.
8. Price.
(a) Buyer shall purchase the Goods from Seller at the prices (the “Prices”) set forth in Seller’s published catalogue literature in force as of the date of the
Sales Quotation. However, the Prices shown in such catalogue literature or any other publication are subject to change without notice. Unless specifically
stated to the contrary in the Sales Quotation, quoted Prices and discounts are firm for thirty (30) days from the date of the Sales Quotation. Unless otherwise
stated, prices are quoted EXW (Incoterms 2010), Shipping Point. Unless otherwise stated in the Acknowledgement, if the Prices should be increased by
Seller before delivery of the Goods to a carrier for shipment to Buyer, then these Terms shall be construed as if the increased prices were originally inserted
herein, and Buyer shall be billed by Seller on the basis of such increased prices.
(b) All Prices are exclusive of all sales, use and excise taxes, and any other similar taxes, duties and charges of any kind imposed by any governmental
authority on any amounts payable by Buyer. Buyer shall be responsible for all such charges, costs and taxes (present or future); provided, that, Buyer shall
not be responsible for any taxes imposed on, or with respect to, Seller’s income, revenues, gross receipts, personnel or real or personal property or other
assets.
9. Payment Terms.
(a) Unless otherwise provided in the Acknowledgement, if Buyer has approved credit with Seller, Buyer shall pay all invoiced amounts due to Seller within
thirty (30) days from the date of Seller’s invoice. If Seller does not have Buyer’s financial information and has not provided pre-approved credit terms for
Buyer, the payment must be made in cash with order or C.O.D. in US dollars. If Buyer has approved credit terms, the payment may be made by cash with
order, wire transfer of immediately available funds, or check in US dollars. Certain products require a down payment. Any payment terms other than set
forth above will be identified in the Acknowledgement. Notwithstanding anything herein to the contrary, all prepaid deposits and down payments are non-
refundable. If a deposit is not received when due, Seller reserves the right to postpone manufacturing of Goods until payment is received. Seller will not be
responsible for shipment delays due to deposit payment delays.
(b) In Seller’s sole discretion, Seller may access Buyer interest on all late payments at the lesser of the rate of 1.5% per month or the highest rate permissible
under applicable law, calculated daily and compounded monthly. Buyer shall reimburse Seller for all costs incurred in collecting any late payments, including,
without limitation, attorneys’ fees. In addition to all other remedies available under these Terms or at law (which Seller does not waive by the exercise of
any rights hereunder), Seller shall be entitled to suspend the delivery of any Goods if Buyer fails to pay any amounts when due hereunder and such failure
continues for ten (10) days following written notice thereof.
(c) Buyer shall not withhold payment of any amounts due and payable by reason of any set-off of any claim or dispute with Seller, whether relating to Seller’s
breach, bankruptcy or otherwise.
10. Intellectual Property; Software License.
(a) To the extent that any Goods provided under this Agreement contains software, whether pre-installed, embedded, in read only memory, or found on
any other media or other form (“Software”), such Software and accompanying documentation are licensed to Buyer, not sold and shall remain the sole and
exclusive property of Seller or third party licensors of Seller. Seller grants Buyer a non-exclusive license to use the Software solely as provided in and in
connection with the use of the Goods in which such Software is contained and in accordance with any applicable user documentation provided with such
Goods and subject to the provisions of this Agreement. Certain of Seller’s Goods may include third party software such as computer operating systems.
Licenses to such third party software are subject to the terms and conditions of any applicable third party software license agreements. Unless identified in
the Acknowledgement, no license is granted by Seller with respect to such third party software products that may be provided with the Goods (if any). Seller
makes no warranties regarding any third party software that may accompany the Goods or otherwise and such software is explicitly included in the definition
of Third Party Products below.
(b) Buyer shall not copy, modify, or disassemble, or permit others to copy, modify, or disassemble, the Software, nor may Buyer modify, adapt, translate,
reverse assemble, decompile, or otherwise attempt to derive source code from the Software. Buyer shall not transfer possession of the Software except as
part of, or with, the Goods, and each such transfer shall be subject to the restrictions contained herein. Buyer may not sublicense, rent, loan, assign or
otherwise transfer the Software or documentation, and Buyer shall retain on all copies of the Software and documentation all copyright and other proprietary
notices or legends appearing therein or thereon. Seller may terminate this license upon written notice for any violation of any of the terms of this license
or any material breach of any provision of this Agreement. Buyer shall immediately discontinue use of the Software upon any termination of this license or
Agreement. This license shall terminate upon any termination of the Agreement.

2 KHZ INVERTER WEDLING POWER SUPPLY
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(c) All patents, trademarks, copyrights or other intellectual property rights embodied in the Goods, including without limitation the Software, are owned by
Seller and its licensors. Seller and its licensors retain all right, title and interest in such intellectual property rights. Except as expressly set forth herein, no
license rights or ownership in or to any of the foregoing is granted or transferred hereunder, either directly or by implication. ALL RIGHTS RESERVED.
(d) If Buyer is the United States Government or any agency thereof, each of the components of the Software and user documentation are a “commercial
item,” and “computer software” as those terms are defined at 48 C.F.R. 2.101, consisting of “commercial computer software” and “commercial computer
software documentation,” as such terms are used in 48 C.F.R. 12.212. Consistent with 48 C.F.R. 12.212 and 48 C.F.R. 227.7202-1 through 227.7202-4, all
United States government Buyers acquire only those rights in the Software and user documentation that are specified in this Agreement.
11. Installation and Other Services. Seller shall provide installation services (“Installation Services”) to Buyer if set forth in the Acknowledgment. If
Installation Services are provided for in the Acknowledgement, Buyer will prepare the location for the installation consistent with Buyer’s written
specifications and Buyer will install necessary system cable and assemble any necessary equipment or hardware not provided by Seller, unless agreed
otherwise in writing by the parties. For Goods that will be operated on or in connection with Buyer supplied hardware or software, Buyer is responsible for
ensuring that its hardware and software conform with Seller minimum hardware and software requirements as made available to Buyer. Seller shall provide
other field services, such as maintenance visits and field repairs (the “Other Services” and together with the Installation Services, the “Services”) if set forth
in the Acknowledgement.
12. Limited Warranty.
(a) Subject to the exceptions and upon the conditions set forth herein, Seller warrants to Buyer that for a period of one (1) year from the date of shipment
(“Warranty Period”), that such Goods will be free from material defects in material and workmanship.
(b) Notwithstanding the foregoing and anything herein to the contrary, the warranty set forth in this Section 12 shall be superseded and replaced in its entirety
with the warranty set forth on Exhibit A hereto if the Goods being purchased are specialty products, which include, without limitation, laser products, fiber
markers, custom systems, workstations, Seller-installed products, non-catalogue products and other custom-made items (each a “Specialty Product”).
(c) EXCEPT FOR THE WARRANTY SET FORTH IN SECTION 12(A), SELLER MAKES NO WARRANTY WHATSOEVER WITH RESPECT TO THE GOODS (INCLUDING
ANY SOFTWARE) OR SERVICES, INCLUDING ANY (a) WARRANTY OF MERCHANTABILITY; (b) WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE; (c)
WARRANTY OF TITLE; OR (d) WARRANTY AGAINST INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OF A THIRD PARTY; WHETHER EXPRESS OR
IMPLIED BY LAW, COURSE OF DEALING, COURSE OF PERFORMANCE, USAGE OF TRADE OR OTHERWISE.
(d) Products manufactured by a third party and third party software (“Third Party Product”) may constitute, contain, be contained in, incorporated into,
attached to or packaged together with, the Goods. Third Party Products are not covered by the warranty in Section 12(a). For the avoidance of doubt,
SELLER MAKES NO REPRESENTATIONS OR WARRANTIES WITH RESPECT TO ANY THIRD PARTY PRODUCT, INCLUDING ANY (a) WARRANTY OF
MERCHANTABILITY; (b) WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE; (c) WARRANTY OF TITLE; OR (d) WARRANTY AGAINST INFRINGEMENT OF
INTELLECTUAL PROPERTY RIGHTS OF A THIRD PARTY; WHETHER EXPRESS OR IMPLIED BY LAW, COURSE OF DEALING, COURSE OF PERFORMANCE, USAGE
OF TRADE OR OTHERWISE. Notwithstanding the foregoing, in the event of the failure of any Third Party Product, Seller will assist (within reason) Buyer (at
Buyer’s sole expense) in obtaining, from the respective third party, any (if any) adjustment that is available under such third party’s warranty.
(e) Seller shall not be liable for a breach of the warranty set forth in Section 12(a) unless: (i) Buyer gives written notice of the defect, reasonably described,
to Seller within five (5) days of the time when Buyer discovers or ought to have discovered the defect and such notice is received by Seller during the
Warranty Period; (ii) Seller is given a reasonable opportunity after receiving the notice to examine such Goods; (iii) Buyer (if requested to do so by Seller)
returns such Goods (prepaid and insured to Seller at 1820 South Myrtle Avenue, Monrovia, CA 91016or to such other location as designated in writing by
Seller) to Seller pursuant to Seller’s RMA procedures and Buyer obtains a RMA number from Seller prior to returning such Goods for the examination to take
place; and (iii) Seller reasonably verifies Buyer’s claim that the Goods are defective and that the defect developed under normal and proper use.
(f) Seller shall not be liable for a breach of the warranty set forth in Section 12(a) if: (i) Buyer makes any further use of such Goods after giving such notice;
(ii) the defect arises because Buyer failed to follow Seller’s oral or written instructions as to the storage, installation, commissioning, use or maintenance of
the Goods; (iii) Buyer alters or repairs such Goods without the prior written consent of Seller; or (iv) repairs or modifications are made by persons other than
Seller’s own service personnel, or an authorized representative’s personnel, unless such repairs are made with the written consent of Seller in accordance
with procedures outlined by Seller.
(g) All expendables such as electrodes are warranted only for defect in material and workmanship which are apparent upon receipt by Buyer. The foregoing
warranty is negated after the initial use.
(h) Subject to Section 12(e) and Section 12(f) above, with respect to any such Goods during the Warranty Period, Seller shall, in its sole discretion, either: (i)
repair or replace such Goods (or the defective part) or (ii) credit or refund the price of such Goods at the pro rata contract rate, provided that, if Seller so
requests, Buyer shall, at Buyer’s expense, return such Goods to Seller.
(i) THE REMEDIES SET FORTH IN SECTION 12(H) SHALL BE BUYER’S SOLE AND EXCLUSIVE REMEDY AND SELLER’S ENTIRE LIABILITY FOR ANY BREACH OF
THE LIMITED WARRANTY SET FORTH IN SECTION 12(A). Representations and warranties made by any person, including representatives of Seller, which are
inconsistent or in conflict with the terms of this warranty, as set forth above, shall not be binding upon Seller.
13. Limitation of Liability.
(a) IN NO EVENT SHALL SELLER BE LIABLE FOR ANY CONSEQUENTIAL, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR PUNITIVE DAMAGES, LOST PROFITS
OR REVENUES OR DIMINUTION IN VALUE, LOSS OF INFORMATION OR DATA, OR PERSONAL INJURY OR DEATH ARISING IN ANY WAY OUT OF THE
MANUFACTURE, SALE, USE, OR INABILITY TO USE ANY GOODS, SOFTWARE OR SERVICE, ORARISING OUT OF OR RELATING TO ANY BREACH OF THESE
TERMS, WHETHER OR NOT THE POSSIBILITY OF SUCH DAMAGES HAS BEEN DISCLOSED IN ADVANCE BY BUYER OR COULD HAVE BEEN REASONABLY
FORESEEN BY BUYER, REGARDLESS OF THE LEGAL OR EQUITABLE THEORY (CONTRACT, TORT OR OTHERWISE) UPON WHICH THE CLAIM IS BASED, AND
NOTWITHSTANDING THE FAILURE OF ANY AGREED OR OTHER REMEDY OF ITS ESSENTIAL PURPOSE.

2 KHZ INVERTER WEDLING POWER SUPPLY
990-057 xv
(b) IN NO EVENT SHALL SELLER’S AGGREGATE LIABILITY ARISING OUT OF OR RELATED TO THIS AGREEMENT, WHETHER ARISING OUT OF OR RELATED TO
BREACH OF CONTRACT, TORT (INCLUDING NEGLIGENCE) OR OTHERWISE, EXCEED THE TOTAL OF THE AMOUNTS PAID TO SELLER FOR THE GOODS SOLD
HEREUNDER.
(c) ALL WARRANTIES SET FORTH HEREIN, DIRECT OR IMPLIED, ARE VOIDED IF THE INITIAL INSTALLATION AND START-UP OF THE SUBJECT GOOD IS NOT
SUPERVISED BY AN AUTHORIZED REPRESENTATIVE OF SELLER. AFTER INSTALLATION, ANY RE-ALIGNMENT, RE-CLEANING, OR RE-CALIBRATION,
PROVIDED THEY ARE NOT RELATED TO A PROVEN DEFECT IN MATERIALS OR WORKMANSHIP, SHALL BE PERFORMED BY AN AUTHORIZED
REPRESENTATIVE OF SELLERAT THE CURRENT SERVICE RATES.
(d) WHERE GOODS ARE SUBJECT TO A MOVE TO ANOTHER LOCATION AFTER THE ORIGINAL INSTALLATION HAS BEEN MADE, THE WARRANTY MAY BE
MAINTAINED ONLY IF SUPERVISED BY AN AUTHORIZED REPRESENTATIVE OF SELLER. SELLER, FOR A SERVICE CHARGE, WILL ARRANGE FOR AND
SUPERVISE THE DISCONNECTION, TRANSPORTATION, REINSTALLATION AND START-UP OF THE EQUIPMENT. CLAIMS FOR DAMAGE IN SHIPMENT ARE
THE RESPONSIBILITY OF BUYER AND SHALL BE FILED PROMPTLY WITH THE TRANSPORTATION COMPANY.
14. Return Goods Policy. Seller’s products may be returned to Seller for credit within sixty (60) days of shipment subject to the following conditions.
(a) In order to return products for credit, Buyer must obtain a RMA number from Seller. Upon receipt, it must be executed by an authorized person and
then returned with the Goods. Goods returned to Seller without a RMA will be returned at Buyer’s expense.
(b) Goods are to be returned to Seller at 1820 South Myrtle Avenue, Monrovia, CA 91016 with Freight Prepaid. Seller will not accept collect shipments.
(c) Restocking fees will be assessed in accordance with the following schedules: (i) Goods returned within the first thirty (30) days from shipment date will
be restocked less twenty percent (20%) of the amount billed on the original invoice. (ii) Goods returned over thirty (30) days of shipment but less than sixty
(60) days will be restocked less thirty percent (30%) of the amount billed on the original invoice. (iii) No returns are allowed after sixty (60) days from the
original shipping date.
(d) The restocking fees set forth above are the minimum fees. If a returned Good requires rework to restore it to a saleable condition, further charges will
be assessed. Seller’s quality assurance department will document the condition of the Goods when received by Seller and report their findings to Buyer.
(e) Notwithstanding the foregoing provisions of this Section 14, the following Goods cannot be returned, are not eligible for any credit and cannot be
restocked: (i) custom or modified products and (ii) any expendable product(s) that have been used.
15. Compliance with Law and Indemnification. Buyer shall comply with all applicable laws, regulations and ordinances. Buyer shall maintain in effect all
the licenses, permissions, authorizations, consents and permits that it needs to carry out its obligations under this Agreement. Buyer shall comply with all
export and import laws of all countries involved in the sale of the Goods under this Agreement or any resale of the Goods by Buyer. Goods, Services and
technical data delivered by Seller shall be subject to U.S. export controls. Buyer shall, and shall cause its customers to, obtain all licenses, permits and
approvals required by any government and shall comply with all applicable laws, rules, policies and procedures of the applicable government and other
competent authorities. Buyer will indemnify and hold Seller harmless for any violation or alleged violation by Buyer of such laws, rules, policies or procedures.
Buyer shall not transmit, export or re-export, directly or indirectly, separately or as part of any system, the Goods or any technical data (including processes
and Services) received from Seller, without first obtaining any license required by the applicable government, including without limitation, the U.S.
government. Buyer also certifies that none of the Goods or technical data supplied by Seller under this Agreement will be sold or otherwise transferred to,
or made available for use by or for, any entity that is engaged in the design, development, production or use of nuclear, biological or chemical weapons or
missile technology. No Buyer information will be deemed “technical data” unless Buyer specifically identifies it to Seller as such. Buyer assumes all
responsibility for shipments of Goods requiring any government import clearance. Seller may terminate this Agreement if any governmental authority
imposes antidumping or countervailing duties or any other penalties on Goods. For all international shipments, Seller requires that all required Export
Control documentations, including Form BIS-711 Statement by Ultimate Consignee and Purchases, are submitted by Buyer along with the purchase order.
Seller reserves the right to postpone shipment until all documentations are completed and submitted to Seller. Seller will not be responsible for shipment
delays due to non-compliance by Buyer of the foregoing two sentences.
16. Termination. In addition to any remedies that may be provided under these Terms, Seller may terminate this Agreement with immediate effect upon
written notice to Buyer, if Buyer: (i) fails to pay any amount when due under this Agreement and such failure continues for ten (10) days after Buyer’s receipt
of written notice of nonpayment; (ii) has not otherwise performed or complied with any of these Terms, in whole or in part; or (iii) becomes insolvent, files
a petition for bankruptcy or commences or has commenced against it proceedings relating to bankruptcy, receivership, reorganization or assignment for the
benefit of creditors.
17. Waiver. No waiver by Seller of any of the provisions of this Agreement is effective unless explicitly set forth in writing and signed by Seller. No failure to
exercise, or delay in exercising, any rights, remedy, power or privilege arising from this Agreement operates or may be construed as a waiver thereof. No
single or partial exercise of any right, remedy, power or privilege hereunder precludes any other or further exercise thereof or the exercise of any other
right, remedy, power or privilege.
18. Confidential Information. All non-public, confidential or proprietary information of Seller, including, but not limited to, specifications, samples, patterns,
designs, plans, drawings, documents, data, business operations, customer lists, pricing, discounts or rebates, disclosed by Seller to Buyer, whether disclosed
orally or disclosed or accessed in written, electronic or other form or media, and whether or not marked, designated or otherwise identified as “confidential,”
in connection with this Agreement is confidential, solely for the use of performing this Agreement and may not be disclosed or copied unless authorized in
advance by Seller in writing. Upon Seller’s request, Buyer shall promptly return all documents and other materials received from Seller. Seller shall be
entitled to injunctive relief for any violation of this Section 18. This Section 18 does not apply to information that is: (a) in the public domain through no
fault of Buyer; (b) known to Buyer at the time of disclosure without restriction as evidenced by its records; or (c) rightfully obtained by Buyer on a non-
confidential basis from a third party.
19. Force Majeure. Seller shall not be liable or responsible to Buyer, nor be deemed to have defaulted or breached this Agreement, for any failure or delay
in fulfilling or performing any term of this Agreement when and to the extent such failure or delay is caused by or results from acts or circumstances beyond

2 KHZ INVERTER WEDLING POWER SUPPLY
xvi 990-057
the reasonable control of Seller including, without limitation, acts of God, flood, fire, earthquake, explosion, governmental actions, war, invasion or hostilities
(whether war is declared or not), terrorist threats or acts, riot, or other civil unrest, national emergency, revolution, insurrection, epidemic, lock-outs, strikes
or other labor disputes (whether or not relating to either party’s workforce), or restraints or delays affecting carriers or inability or delay in obtaining supplies
of adequate or suitable materials, materials or telecommunication breakdown or power outage (each a “Force Majeure Event”), provided that, if the event
in question continues for a continuous period in excess of thirty (30) days, Buyer shall be entitled to give notice in writing to Seller to terminate this
Agreement.
20. Assignment. Buyer shall not assign any of its rights or delegate any of its obligations under this Agreement without the prior written consent of Seller.
Any purported assignment or delegation in violation of this Section 20 is null and void. No assignment or delegation relieves Buyer of any of its obligations
under this Agreement.
21. Relationship of the Parties. The relationship between the parties is that of independent contractors. Nothing contained in this Agreement shall be
construed as creating any agency, partnership, joint venture or other form of joint enterprise, employment or fiduciary relationship between the parties,
and neither party shall have authority to contract for or bind the other party in any manner whatsoever.
22. No Third-Party Beneficiaries. This Agreement is for the sole benefit of the parties hereto and their respective successors and permitted assigns and
nothing herein, express or implied, is intended to or shall confer upon any other person or entity any legal or equitable right, benefit or remedy of any nature
whatsoever under or by reason of these Terms.
23. Governing Law. All matters arising out of or relating to this Agreement is governed by and construed in accordance with the internal laws of the State
of California without giving effect to any choice or conflict of law provision or rule (whether of the State of California or any other jurisdiction) that would
cause the application of the laws of any jurisdiction other than those of the State of California.
24. Dispute Resolution.
(a) If Buyer is an entity formed under the laws of the United States of America, or any of its states, districts or territories (“U.S. Law”), then any dispute, legal
suit, action or proceeding arising out of or relating to this Agreement shall be adjudicated and decided in the federal courts of the United States of America
or the courts of the State of California in each case located in the City of Los Angeles and County of Los Angeles, California and each party irrevocably submits
to the exclusive and personal jurisdiction of such courts in any such dispute, suit, action or proceeding.
(b) If Buyer is an entity formed under the laws of any country, state, district or territory other than U.S. Law, then the parties irrevocably agree that any
dispute, legal suit, action or proceeding arising out of or relating to this Agreement shall be submitted to the International Court of Arbitration of the
International Chamber of Commerce (“ICC”) and shall be finally settled under the Rules of Arbitration of the ICC. The place and location of the arbitration
shall be in Los Angeles, California, pursuant to the ICC’s Rules of Arbitration and shall be finally settled in accordance with said rules. The arbitration shall
be conducted before a panel of three arbitrators. Each party shall select one arbitrator and the two arbitrators so selected shall select the third arbitrator,
who shall act as presiding arbitrator. Notwithstanding the foregoing, if the matter under dispute is $500,000 or less, there shall only be one arbitrator who
shall be mutually selected by both parties. If the party-selected arbitrators are unable to agree upon the third arbitrator, if either party fails to select an
arbitrator, or in the case that only one arbitrator is required and the parties are unable to agree, then the International Court of Arbitration shall choose the
arbitrator. The language to be used in the arbitral proceeding shall be English. The arbitrator(s) shall have no authority to issue an award that is contrary to
the express terms of this Agreement or the laws of the State of California or applicable US Federal Law, and the award may be vacated or corrected on
appeal to a court of competent jurisdiction for any such error. The arbitrator(s) shall be specifically empowered to allocate between the parties the costs of
arbitration, as well as reasonable attorneys’ fees and costs, in such equitable manner as the arbitrator(s) may determine. The arbitrator(s) shall have the
authority to determine issues of arbitrability and to award compensatory damages, but they shall not have authority to award punitive or exemplary
damages. Judgment upon the award so rendered may be entered in any court having jurisdiction or application may be made to such court for judicial
acceptance of any award and an order of enforcement, as the case may be. In no event shall a demand for arbitration be made after the date when institution
of a legal or equitable proceeding based upon such claim, dispute or other matter in question would be barred by the applicable statute of limitations.
Notwithstanding the foregoing, either party shall have the right, without waiving any right or remedy available to such party under this Agreement or
otherwise, to seek and obtain from any court of competent jurisdiction any interim or provisional relief that is necessary or desirable to protect the rights
or property of such party, pending the selection of the arbitrator(s) hereunder or pending the arbitrator(s)’ determination of any dispute, controversy or
claim hereunder.
25. Notices. All notices, request, consents, claims, demands, waivers and other communications hereunder (each, a “Notice”) shall be in writing and
addressed to the parties at the addresses set forth on the face of the Acknowledgement or to such other address that may be designated by the receiving
party in writing. All Notices shall be delivered by personal delivery, nationally recognized overnight courier (with all fees pre-paid), facsimile (with
confirmation of transmission) or certified or registered mail (in each case, return receipt requested, postage prepaid). Except as otherwise provided in this
Agreement, a Notice is effective only (a) upon receipt of the receiving party, upon confirmation of delivery by nationally recognized overnight courier or
upon forty-eight (48) hours after being sent by certified or registered mail (as applicable), and (b) if the party giving the Notice has complied with the
requirements of this Section 25.
26. Severability. If any term or provision of this Agreement is invalid, illegal or unenforceable in any jurisdiction, such invalidity, illegality or unenforceability
shall not affect any other term or provision of this Agreement or invalidate or render unenforceable such term or provision in any other jurisdiction.
27. Survival. Provisions of these Terms which by their nature should apply beyond their terms will remain in force after any termination or expiration of this
Order including, but not limited to, the following provisions: Compliance with Laws, Confidentiality, Governing Law, Dispute Resolution, Survival, and the
restrictions on Software in Sections 10(b), (c) and (d).

2 KHZ INVERTER WELDING POWER SUPPLY
990-057 1-1
CHAPTER 1
DESCRIPTION
The AMADA WELD TECH - HF2 High Frequency Inverter Welding Power Supply is a 2 KHz,
three-phase, state-of-the-art inverter welding power supply. This manual covers the following models:
MODEL NUMBER STOCK NUMBER
HF2/230 1-264-04
HF2/380 1-264-04-01
HF2/460 1-264-04-02
HF2/208 1-264-04-03
HF2S/230 1-265-04
HF2S/380 1-265-04-01
HF2S/460 1-265-04-02
HF2S/208 1-265-04-03
NOTE: HF2Sunits with the built-in Weld Sentry Option also require User's Manual # 990-291.
For the rest of this manual the HF2 High Frequency Inverter Welding Power Supply will simply be called
the Power Supply and the HF2 Transformer will simply be called the Transformer.
The Power Supply is designed for joining precision small parts at high speed with controllable rise times
using 2 KHz output pulses superimposed on pure DC welding energy. High speed (250 micro-second)
digital feedback automatically controls weld current, voltage, or power, providing more welding
consistency compared to traditional direct energy (AC) or stored energy (CD) technologies.
Microprocessor technology automatically compensates for changes in workpiece resistance, load
inductance, weld transformer saturation, and up to 13% changes in line voltage. The Power Supply uses
IGBT power device technology for precisely controlling the weld energy at both high and low energy
levels.
Easy to use constant weld current, voltage or power feedback ensures repeatable welding and has proven
to extend electrode life in many applications by a factor of five or more. A selectable weld energy limiting
feature also contributes to repeatable welds and high nugget quality. The user can program the Power
Supply using a graphical or numerical interface.

CHAPTER 1: DESCRIPTION
2 KHZ INVERTER WELDING POWER SUPPLY
1-2 990-057
The Weld Graph Program Mode (Figure 1-1) emulates many of the popular word processing programs by
using the front panel cursor keys to easily modify any time period, current, voltage, or power value. The
Weld Graph Run Mode (Figure 1-2) gives the user instant visual feedback on the actual current, voltage
or power used to make each weld.
Figure 1-1. Program Mode
Figure 1-2. Actual Weld Current
The Power Supplies exclusive, context sensitive, User Help Screens quickly guide the user through even
the most complex program. Each weld schedule can use any one of 10 different Weld Functions, thus
matching the appropriate weld energy profile to the application.
Simple automated welding control is easily accomplished using the BCD Remote Schedule Select feature.
For more complex automation processes, a host computer can use the Power Supplies Bi-Directional RS-
422 / RS-485 Communications Port to select Control Weld Schedules and receive average weld current
and weld voltage data for each weld. Refer to the separate RS-485 Data Communications Manual, P/N:
990-058, for advanced RS-485 data communications operation. The 2 KHz operating frequency ensures
that the Power Supply Weld Transformers are light weight and compact, providing a significant advantage
when they are built into robotics or automatic machines.

2 KHZ INVERTER WEDLING POWER SUPPLY
990-057 2-1
CHAPTER 2
GENERAL SET-UP
REQUIRED CONNECTIONS
Physical Space Requirements
AMADA WELD TECH recommends that the Power Supply and Transformer be installed in a well
ventilated area that is free from excessive dust, acids, corrosive gases, salt and moisture. Allow sufficient
clearance around both sides and back of the Power Supply (Figure 2-1) and Transformer (Figure 2-2) so
that cooling air may flow properly.
Figure 2-1. Power Supply
Air Flow Pattern
Figure 2-2. Transformer
Air Flow Pattern
HF2 Welding Power Supply Dimensions
Width (in / cm) Height (in / cm) Depth (in / cm) Weight (lb. / kg)
10.5 / 26.7 8.5 / 21.5 15.0 / 38.1 42 / 19
HF2 Welding Transformer Dimensions
Model Height (in / cm) Width (in / cm) Depth (in / cm) Weight (lb. / kg)
IT-X2A/2000A 7.0 / 17.6 5.4 / 13.8 11.0 / 28.0 14.3 / 6.5
IT-X3A/4000A 7.2 / 18.3 7.2 / 18.3 13.4 / 34.0 28.6 / 13
IT-X11A/4000A 7.5 / 18.9 7.2 / 18.3 17.9 / 45.5 46 / 21
IT-X11A/4/460A 7.4 / 18.8 7.2 / 18.3 18.9 / 48.5 55 / 25
IT-X3A/4/380A 7.2 / 18.3 7.2 / 18.3 13.4 / 34.0 28.6 / 13
IT-X3A/4/460A 7.2 / 18.3 7.2 / 18.3 13.4 / 34.0 28.6 / 13
HF2
POWER
SUPPLY
(top view)
Air Output (Rear)
Air Input
Left Side
Air Input
Right Side
Front
Air Input
Left Side
Front
Air Input
Right Side
HF2
WELDING
XFRMR
(top view)

CHAPTER 2: GENERAL SETUP
2 KHZ INVERTER WEDLING POWER SUPPLY
2-2 990-057
Power Line Voltage, Current, and Wire Size Requirements
WARNING: The Power Supply and Transformer are assembled at the factory for operation at a specific
input power line voltage. Serious damage can result if these units are used on different voltage other than
the voltage for which they are wired. The Transformer input voltage must match the Power Supply power
line voltage.
Use the following table to select the correct power line circuit breaker and wire gauge size. To minimize
peak power losses, use single unbroken wire lines. Note: To minimize peak power losses, AMADA
WELD TECH recommends wire gauge sizes that exceed the USA National Electrical Code
recommendations.
3-Phase Service
Voltage (RMS) 3-Phase Service Breaker Current (RMS)
Copper Wire Gauge Size
(AWG)
208 V to 230 V 50 A AWG 8 @ 133 strands
380 V to 460 V 30 A AWG 10 @ 105 strands
Insulation Requirements
Oil-resistant synthetic rubber rated at 90 °C and 600 V.
Power Line Fuse Requirements
Service Voltage Fuse Size: F1, F2 AMADA WELD TECH
Part Number
208, 230, 380 3AG, 440 V, 2 A 330-071
460 3AG, 500 V, 2 A 330-100