Unitek HF2/230, HF2/380, HF2/460, HF2/208, HF2S/230 User Manual

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USER'S MANUAL 990-057 Revision K, May 2004

Use with Firmware Release V1.19 or higher

MODEL HF2

2 kHz HIGH FREQUENCY

RESISTANCE WELDING POWER SUPPLY

MODEL NUMBER STOCK NUMBER

HF2/230 1-264-03

HF2/380 1-264-03-01

HF2/460 1-264-03-02

HF2/208 1-264-03-03

HF2S/230 1-265-03

HF2S/380 1-265-03-01

HF2S/460 1-265-03-02

HF2S/208 1-265-03-03

Units with the built-in Weld Sentry Option also require User's Manual No. 990-291

Please be sure to read all personnel and equipment safety precautions noted in this manual.

WARNING

1998, 2002 Unitek Miyachi Corporation

The engineering designs, drawings and data contained herein are the proprietary work of UNITEK MIYACHI CORPORATION and may not be reproduced, copied, exhibited or otherwise used without the written authorization of UNITEK MIYACHI CORPORATION.

Printed in the United States of America.

REVISION RECORD

Revision EO Date Basis of Revision

A ENRG-RLSE 3/95 Released original manual.

B None 9/95 Reorganize manual into chapters.

C None 1/96 Amend to Firmware V1.17 or higher.

D None 2/96 Update cover stock numbers

E None 4/97 Amend to Firmware V1.19 or higher.

F 17472 6/98 1. Remove existing calibration procedure and reference User Calibration

Procedure 994-001.

2. Miscellaneous corrections.

3. Remove SAVE error.

H 19012 9/01 1. Include EO# 118951 in manual.

J 19146 1/02 1. Include EO# 19012.

K 20016 5/04 Updated wire data.

18951 8/01

1. Include EO# 17693 in manual.

2. Add latest version of Operator Guide.

2. Miscellaneous Corrections.

3. Add Appendix F, Quality Resistance Welding Solutions, and Appendix

G, Replacement of Programmed Integrated Circuits.

MODEL HF2 2kHz HIGH FREQUENCY RESISTANCE WELDING POWER SUPPLY

ii 990-057

FOREWORD

The purpose of this manual is to supply operating, maintenance and service personnel with the information needed to properly and safely operate, maintain and service the Unitek Peco Model HF2 2 kHz High Frequency Resistance Welding Power Supply.

Should questions arise, or if you have suggestions for improving this manual, please contact:

Unitek Miyachi Corporation 1820 South Myrtle Avenue P.O. Box 5033 Monrovia, CA 91017-7133 Telephone:(626) 303-5676 FAX:(626) 358-8048 E-mail: info@unitekmiyachi.com

NOTICE

Unitek Miyachi Corporation may be released from all warranty obligations if repairs or modifications are made by persons other than its own service personnel, or authorized representatives' personnel, unless such repairs or modifications are specifically authorized in writing by the Unitek Miyachi Corporation.

WARNING

Contact with 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.

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CONTENTS

Page

CHAPTER 1: DESCRIPTION............................................................................................................ 1-1

HF2 description........................................................................................................................................ 1-1

CHAPTER 2: GENERAL SET-UP..................................................................................................... 2-1

Required Connections.............................................................................................................................. 2-1

Physical Space Requirements ........................................................................................................... 2-1

HF2 Weld Control Dimensions ........................................................................................................ 2-1

HF2 Weld 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 Weld Transformer Electrical Specifications............................................................................. 2-3

HF2 Welding System Maximum Secondary Loop Resistance......................................................... 2-4

HF2 Maximum Secondary Loop Resistance Measurement ............................................................. 2-4

HF2 Weld Control To HF2 Weld Transformer Connections ........................................................... 2-4

HF2 Weld Transformer To Weld Head Connections....................................................................... 2-5

Weld Sentry Option .......................................................................................................................... 2-5

Help Screen Languages .................................................................................................................... 2-5

CHAPTER 3: WELDING SYSTEM SET-UP ................................................................................... 3-1

Welding System Set-Up Guide................................................................................................................ 3-1

General Programming Instructions.......................................................................................................... 3-1

Unitek Peco 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

Unitek Peco 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 (Model 80 Series) ....................................................................... 3-5

Dual Air Regulator Adjustments (Model 180 And Model 90 Series).............................................. 3-6

Quick Start Programming Guide ...................................................................................................... 3-6

Unitek Peco Force Fired, Dual Air Actuated Weld Head System........................................................... 3-8

General Information.......................................................................................................................... 3-8

HF2 Control, Jumper Modifications................................................................................................. 3-8

Weld Head Set-Up............................................................................................................................ 3-8

Firing Switch Cable Connection....................................................................................................... 3-9

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CONTENTS (Continued)

Page

CHAPTER 3: WELDING SYSTEM SET-UP (Continued)

Weld Head Valve Driver Connections .......................................................................................... 3-10

Foot Switch Connection ................................................................................................................. 3-10

Dual Air Regulator Adjustments .................................................................................................... 3-11

Quick Start Programming Guide .................................................................................................... 3-15

Non-Force Fired, Single Air or Cam Actuated Weld Head System............................................... 3-17

LC To HF2 Control Electrical Connections .................................................................................. 3-17

PLC Timing Diagram ..................................................................................................................... 3-18

Quick Start Programming Guide .................................................................................................... 3-18

Non-Force Fired, Multiple Air Actuated Weld Head System ........................................................ 3-20

CHAPTER 4: CONTROLS ................................................................................................................. 4-1

HF2 Weld Control - Front Panel ............................................................................................................ 4-1

HF2 Weld Control - Rear Panel Inputs and Outputs ............................................................................... 4-3

Power ................................................................................................................................................ 4-3

Fuses F1 and 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 .............................................................................. 4-6

Opto Coupler Firing Switch - 3-Wire Connection .......................................................................... 4-6

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 .......................................................................................... 4-10

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........................................................................................ 5-1

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 ................................................................... 6-1

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 ............................................................................................................................................. 6-11

Pulsation ................................................................................................................................................ 6-13

CHAPTER 7: SPECIAL FEATURES ............................................................................................... 7-1

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 HF2 ........................................................................................................................................ 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 .............................................................................................. 8-1

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

CHAPTER 9: RS-485 DATACOM .................................................................................................... 9-1

Description ............................................................................................................................................. 9-1

RS485 Serial Port Connections ............................................................................................................... 9-2

Datacom Software Installation................................................................................................................. 9-2

F1:Setup .................................................................................................................................................. 9-4

F2:Collect Data ....................................................................................................................................... 9-5

F3:Erase Data .......................................................................................................................................... 9-5

F4:Exit` ................................................................................................................................................... 9-5

APPENDIX A: TECHNICAL SPECIFICATIONS ........................................................................ A-1

APPENDIX B: RECOMMENDED SPARE PARTS ........................................................................B-1

APPENDIX C: ALARM MESSAGES.................................................................................................C-1

APPENDIX D: HELP SCREEN LANGUAGES ............................................................................. D-1

APPENDIX E: THE BASICS OF RESISTANCE WELDING .........................................................E-1

APPENDIX F: QUALITY RESISTANCE WELDING SOLUTIONS:

DEFINING THE OPTIMUM PROCESS ................................................................................... F-1

APPENDIX G: REPLACEMENT OF PROGRAMMED INTEGRATED CIRCUITS .............. G-1

INDEX ............................................................................................................................................ Index-1

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CHAPTER 1

DESCRIPTION

The Unitek Peco High Frequency Inverter (HF2) is a 2 KHz, three-phase, state-of-the-art inverter welding control 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 ñ 13% changes in line voltage. The HF2 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 HF2 using a graphical or numerical interface. 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 HF2's 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 HF2 Bi-Directional RS422/RS485 Communications Port to select HF2 Weld Schedules and receive average weld current and weld voltage data for each weld. Refer to the separate RS-485 Datacom Manual, P/N: 990-058, for Advanced RS-485 Datacom operation. The 2 KHz operating frequency ensures that the HF2 Weld Transformers are light weight and compact, providing a significant advantage when they are built into robotics or automatic machines.

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CHAPTER 2

GENERAL SET-UP

REQUIRED CONNECTIONS

Physical Space Requirements

Unitek Peco recommends that the HF2 Weld Control and HF2 Weld 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 HF2 Weld Control and HF2 Weld Transformer so that cooling air may flow properly. Figure 2-1 shows the cooling airflow pattern for the HF2 Weld Control. Figure 2-2 shows the cooling airflow pattern for the HF2 Weld Transformer.

Figure 2-1. HF2 Weld Control

Air Flow Pattern

HF2 Weld Control Dimensions

Width (in/cm) Height (in/cm) Depth (in/cm) Weight (lbs/Kg)

10.5 / 26.7 8.5 / 21.5 15.0 / 38.1 42 / 19

HF2 Weld Transformer Dimensions

Model Height (in/cm) Width (in/cm) Depth (in/cm) Weight (lbs/Kg)

X2/2000A 7.0 / 17.6 5.4 / 13.8 11.0 / 28.0 14.3 / 6.5

X3/4000A 7.2 / 18.3 7.2 / 18.3 13.4 / 34.0 28.6 / 13

X5/3000A 7.5 / 18.9 7.2 / 18.3 14.2 / 36.0 31 / 14

X11/4000A 7.5 / 18.9 7.2 / 18.3 17.9 / 45.5 46 / 21

X11/4/460A 7.4 / 18.8 7.2 / 18.3 18.9 / 48.5 55 / 25

X3/4/380A 7.2 / 18.3 7.2 / 18.3 13.4 / 34.0 28.6 / 13

X3/4/460A 7.2 / 18.3 7.2 / 18.3 13.4 / 34.0 28.6 / 13

Figure 2-2. HF2 Weld Transformer

Air Flow Pattern

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CHAPTER 2: GENERAL SETUP

Power Line Voltage, Current, and Wire Size Requirements

WARNING: The HF2 Weld Control and HF2 Weld 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 HF2 weld transformer input voltage must match the HF2 weld control 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, Unitek Peco recommended wire gauge sizes exceed the USA National Electrical Code recommendations.

3-Phase Service

Voltage (RMS)

208V to 230V 50A AWG 8 @ 133 strands

380V to 460V 30A AWG 10 @ 105 strands

Insulation Requirement

Oil-resistant synthetic rubber rated at 90°C and 600V.

Power Line Fuse Requirements

Service Voltage Fuse Size: F1, F2 Unitek Peco P/N

3-Phase Service Breaker

Current (RMS)

Copper Wire Gauge Size

(AWG)

208, 230, 380 3AG, 440 V, 2 A 330-071

460 3AG, 500 V, 2 A 330-100

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CHAPTER 2: GENERAL SETUP

HF2 Weld Transformer Electrical Specifications

Model Input Volts

(Rms)

X3/4/380A 380 9 6 6.5 4,000 500 X3/4/460A 460 9 6 6.5 4,000 500 X3/4000A 230 9 6 6.5 4,000 500 X9/6000A 230 19 6 9.3 (32:1 TR) 4,900 500

Input kva

(Rms)

Duty Cycle ( %) Peak Open Ckt

Output Voltage

Peak Output

Max. (Amps)

Max Sec

Resist. (μΩ)

X11/4/460A 380 4 5 11.8 (44:1 TR)

10.0 (52:1 TR)

8.6 (60:1 TR)

7.5 (68:1 TR)

X11/4000A 230 15 5 10.7

460 4 5 14.3 (44:1 TR)

12.1 (52:1 TR)

10.5 (60:1 TR)

9.2 (68:1 TR)

10.0 (52:1 TR)

8.6 (60:1 TR)

8.7

8.8

8.9

TRANSFORMER SPECIFICATION NOTES:

1 For the Model X11/4/460A, turns ratios

(TR) are selectable by a switch on the transformer rear panel.

2 HF2 Weld Control Input voltage selection

must be jumpered at E12 on the HF2 Weld PCB as shown in Figure 2-3. E12 is located at the center of the PCB left edge.

4,000 4,000 4,000 4,000

4,000 4,000 4,000

1,300 1,100

950 825

1,300 1,100

950 825

1,300 1,100

3 Maximum weld time at Maximum Short

Circuit Current is 50 milliseconds.

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Figure 2-3. Voltage Jumpers

CHAPTER 2: GENERAL SETUP

HF2 Welding System Maximum Secondary Loop Resistance

To use the HF2 Weld Control and HF2 Weld Transformer system to its maximum capability, the Maximum Secondary Loop Resistance must not exceed the values listed in the preceding table. Exceeding these maximums will produce a "FEEDBACK RANGE EXCEEDED" alarm.

HF2 Maximum Secondary Loop Resistance Measurement (Figure 2-4)

1 Connect a four terminal micro-ohmmeter

as shown in Figure 2-4.

2 Put the parts to be welded between the

electrodes.

3 Measure the total loop resistance which

includes both Weld Cables, Weld Head, Electrodes, and parts.

4 If the total loop resistance exceeds the

table value, use:

A) Larger diameter Weld Cables

Figure 2-4. Secondary

Resistance Measurement

B) Shorter length Weld Cables, or

C) Copper Bus Bars to connect the HF2 Weld Transformer to the Weld Head. If these

suggestions do not work, then a different Weld Transformer Model may be required.

CAUTION: For product safety, the system power cable and all inter-unit cabling should be as short as possible, and be dressed so that all cables stay separated.

HF2 Weld Control to HF2 Weld Transformer Connections (Figure 2-5)

The HF2 Weld Control must always be connected to the HF2 Weld Transformer as shown in Figure 25, regardless of what Weld Head System is used.

1 Connect the HF2 Weld Control POWER

Cable to the line voltage source as specified in Chapter 2, Power Line

Voltage, Current, and Wire Size Requirements.

2 Connect the HF2 Weld Control OUTPUT

Cable to the matching connector on the HF2 Weld Transformer.

3 Connect the HF2 Weld Control SENSING

PORT Cable to the matching connector on the HF2 Weld Transformer.

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CHAPTER 2: GENERAL SETUP

HF2 Weld Transformer to Weld Head Connections (Figure 2-6)

1 Connect the Upper Weld Cable to the

Positive Terminal on the HF2 Weld Transformer.

2 Connect the Lower Weld Cable to the

Negative Terminal on the HF2 Weld Transformer.

3 Attach the Voltage Sensing Cable

connector to the HF2 Weld Transformer INPUT connector.

4 Attach each lead at the opposite end of

the Voltage Sensing Cable to each Electrode Holder. Note: Polarity is not important.

5 Strain relief each Voltage Sensing lead to its corresponding Electrode Holder so that the lead

will not break or move under heavy production operating conditions.

Figure 2-6. HF2 Weld Transformer to

Weld Head Connections

6 Do not attach the Firing Switch Cable at this time. This procedure is covered in Chapter 3.

Weld Sentry Option

A small tag displaying the message WELD SENTRY INSTALLED will be attached to the front panel of the HF2 Weld Control if the optional Weld Sentry Module has been installed. Refer to the separate Weld Sentry User's Manual, 990-291 for Weld Sentry operation. The Built-in Weld Sentry Module can be added to the HF2 Weld Control after purchase by ordering the HF2 Weld Sentry Module, P/N 3-130-01-01.

Help Screen Languages

Integrated circuit chip U2 on the Main printed circuit board varies in memory capacity according to the help screen languages available. Refer to Appendix D for special jumpering instructions relative to the installation of IC chip U2.

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CHAPTER 3

WELDING SYSTEM SET-UP

Welding System Set-Up Guide

To complete the welding system installation, select the welding system that best matches your Weld Head configuration using the Welding System Set-Up Guide listed below:

Welding System Set-Up Guide Page

Unitek Equipment Force Fired, Foot Actuated Weld Head 3-2

Unitek Equipment Force Fired, Single Air Actuated Weld Head 3-4

Unitek Equipment Force Fired, Dual Air Actuated Weld Head 3-9

Non-Force Fired, Single Air or Cam Actuated Weld Head 3-17

Non-Force Fired, Multiple Air Actuated Weld Heads Not Released

General Programming Instructions

The following nomenclature and symbols will be used for programming the HF2 Weld Control:

1 Press and release HF2 Weld Control front panel keys that are enclosed by [ ] symbols.

2 Use the vertical cursor keys [ ] in conjunction with the horizontal cursor keys [ ] to

select or highlight a requested Menu Option, followed by the [ENTER] key.

3 Words shown in UPPER CASE ITALIC letters indicate flashing Menu Options on the HF2

Weld Control LCD Display.

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CHAPTER 3: WELDING SYSTEM SET-UP

UNITEK EQUIPMENT FORCE FIRED,

FOOT ACTUATED WELD HEAD SYSTEM

Weld Head Set-up

1 Adjust the Weld Head Force Adjust

Knob to produce 5 units of force as displayed on the Force Indicator. For a complete description of force control and its effect on the welding process, please refer to your Weld Head manual.

2 Install electrodes in Weld Head

Electrode Holders.

Firing Switch Cable Connection

Connect the Weld Head Firing Switch Cable Connector to the matching cable connector on the rear of the HF2 Weld Control.

Quick Start Programming Guide

1 Set the HF2 Weld Control front panel

WELD/NO WELD switch to NO WELD.

Figure 3-1. Firing Switch Cable Connection

2 Turn the circuit breaker switch located

on the HF2 Weld Control rear panel to ON. After a series of power up screens, the last RUN screen displayed will appear. Press the [CHNG] key to access the Weld Graph RUN screen for the BASIC WELD Function.

3 Press [MENU]. The MAIN MENU

screen will appear.

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CHAPTER 3: WELDING SYSTEM SET-UP

4 Select  TRANSFORMER MODEL.

The TRANSFORMER MODEL screen appears.

5 Select MULTIPLE HEADS: OFF. If

the display reads ON, then press [CHNG] until OFF is displayed.

6 Select HEAD 1 : X3/4000-230.

X3/4000-230 is the default Transformer Model number. Press [CHNG] until the correct Transformer Model that you have purchased appears.

7 Press [RUN] to return to the Graphical RUN screen.

8 Set the HF2 Weld Control front panel WELD/NO WELD switch to WELD.

9 Make a test weld by pressing on the Weld Head foot actuator until the HF2 Weld Control fires.

The default WELD time of 1 ms and the default CURRENT of 0.5 kA may not be sufficient to make a good weld.

10 Press [PROG]. Use the vertical cursor

keys [VW] to increase the weld CURRENT. Use the horizontal cursor keys [ ] to increase or decrease the WELD time. In this example, weld CURRENT has been increased to 0.7 kA and WELD time has been increased to 5ms.

11 Press [SAVE] to save your program. You are now back in the Weld Graph RUN State.

12 Make additional test welds and then reprogram WELD time and weld CURRENT as necessary

to make a good weld. Try to use the minimum time and current necessary to make a good weld so that the weld joint heat affected zone will be minimized.

13 Up to 128 different weld schedules can be created and saved. To recall any specific weld

schedule, press the up or down vertical arrow keys [VW] until the desired schedule number appears on the display screen. A faster technique for recalling a specific schedule is to input the Schedule number using the number keys.

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CHAPTER 3: WELDING SYSTEM SET-UP

UNITEK EQUIPMENT FORCE FIRED,

SINGLE AIR ACTUATED WELD HEAD SYSTEM

Weld Head Set-up (Figure 3-2)

1 Adjust the Weld Head Force Adjust

Knob to produce 5 units of force as displayed on the Force Indicator. For a complete description of force control and its effect on the welding process, please refer to your Weld Head manual.

2 Install electrodes in Weld Head

Electrode Holders.

3 Connect a properly filtered air line to

the Inlet Air Line on the Weld Head Air Valve Driver Solenoid assembly which is located on the back of the Weld Head. Use 0.25 inch O.D. by 0.17 inch I.D. plastic hose with a rated burst pressure of 250 psi. A lubricator should only be used with automated installations. Turn on the air system and check for leaks.

Firing Switch Cable Connection (Figure 3-2)

Figure 3-2. Single Air Actuated

Weld Head Connections

Connect the Weld Head Firing Switch Cable Connector to the matching cable connector on the rear of the HF2 Weld Control.

Weld Head Valve Driver No. 1 Connection (Figure 3-2)

A single air actuated Weld Head has one Solenoid Valve Driver Cable for automatic actuation and timing control by the HF2 Weld Control. The HF2 Weld Control will automatically recognize the solenoid voltage of the Weld Head. Connect the 4 pin black plastic connector on the cable to the matching Air Valve 1 Driver connector located on the HF2 Weld Control rear panel.

Foot Switch Connection (Figure 3-2)

1 Connect a Model FS1L, 1-Level, or a Model FS2L, 2-Level Foot Switch to the FOOT

SWITCH connector located on the HF2 rear panel. The HF2 will automatically recognize which model of Unitek Equipment Foot Switch has been connected.

2 1-Level Foot Switch - The l-Level Foot Switch must be fully depressed by the operator. When

the Foot Switch closes, the HF2 energizes the Air Actuated Weld Head, causing the Upper Electrode to descend and apply force to the parts. If the Foot Switch is released before the Weld Head applies the Preset Firing Force, the HF2 will automatically return the Upper Electrode to its up position.

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CHAPTER 3: WELDING SYSTEM SET-UP

3 2-Level Foot Switch - When a 2-Level Foot Switch is pressed to the first level, the HF2

energizes the Air Actuated Weld Head, causing the Upper Electrode to descend and apply force to the parts. If the Foot Switch is released before the operator presses the Foot Switch to the second level, the HF2 will automatically return the Upper Electrode to its up position so that the parts can be repositioned. Once the second level has been reached and the Force Firing Switch in the Weld Head has closed, Weld Current will flow and the HF2 will automatically return the Upper Electrode to its up position.

Single Air Regulator Adjustment (Model 80 Series Weld Heads - Figure 3-2)

1 Set the HF2 Weld Control front panel

WELD/NO WELD switch to NO WELD.

2 Turn the Power Switch located on the

HF2 Weld Control rear panel to ON. After a series of power up screens, the last RUN screen displayed will appear. Press the [CHNG] key to access the Weld Graph RUN screen for the BASIC WELD function.

3 Turn the Air Regulator Clockwise (CW)

to produce 10 psi on the Pressure Gauge.

4 Press and hold the Foot Switch

completely down to close all switch levels. The lower right hand corner of the display should show the status message  STANDBY .

5 Continuing turning the Air Regulator

Clockwise (CW) until the HF2 automatically returns the Upper Electrode to its "up position". The lower right hand corner of the display should now show the status message  END  if you have not released the Foot Switch. Release the Foot Switch.

6 Note: You have 10 seconds to make the

Air Regulator adjustment or a buzzer alarm will sound and the HF2 will automatically return the Upper Electrode to its up position. The status message changes from  STANDBY  to  ALARM FIRING SWITCH . Press [RUN] to clear the alarm and then repeat steps 4 and 5.

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7 Adjust the Down Speed Control Knob so the Upper Electrode descends smoothly onto the

parts.

8 Adjust the Up Speed Control Knob so that the Upper Electrode Holder does not impact upon

returning to in "up position".

Dual Air Regulator Adjustments (Model 180 Series and Model 90 Series Weld Heads Figure 3-2)

1 Turn the Air Regulator located on the right-hand side of the Weld Head Clockwise (CW) to

produce 10 psi on the Pressure Gauge.

2 Adjust the left-hand side Air Regulator following steps 4, 5, and 6 for the Single Air Regulator

Adjustment.

3 Re-adjust the right-hand side Air Regulator to produce the same air pressure as finally used on

the left-hand side Air Regulator.

4 Repeat steps 7 and 8 for the Single Air Regulator Adjustment.

Quick Start Programming Guide

1 Press [MENU]. The MAIN MENU screen will appear.

2 Select TRANSFORMER MODEL.

The TRANSFORMER MODEL screen appears.

3 Select MULTIPLE HEADS: OFF. If

the display reads ON, then press [CHNG] until OFF is displayed.

4 Select HEAD 1 : X3/4000-230.

X3/4000-230 is the default Transformer Model number. Press [CHNG] until the correct Transformer Model that you have purchased appears.

5 Press [RUN] to return to the Weld Graph RUN State.

6 Set the HF2 Weld Control front panel WELD/NO WELD switch to WELD.

7 Make a test weld by pressing on the Weld Head foot actuator until the HF2 Weld Control fires.

The default WELD time of 1 ms and the default CURRENT of 0.5 KA may not be sufficient to make a good weld.

8 Press [PROG]. Press [ENTER] to

change SQUEEZE to WELD, as displayed in the upper right corner. Use the vertical cursor keys [] to increase the weld CURRENT. Use the horizontal cursor keys [ ] to increase or decrease the WELD time. In this example, weld CURRENT has been increased to 0.7 KA and WELD time has been increased to 0.5 ms.

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9 Press [SAVE] to save your program. You are now back in the Weld Graph RUN State.

10 Make additional test welds and then re-program WELD time and weld CURRENT as necessary

to make a good weld. Strive to use minimum time and current necessary to make a good weld so that the weld joint heat affected zone will be minimized.

11 Up to 128 different weld schedules can be created and saved. To recall any specific weld

schedule, press the up or down vertical arrow keys [ ] until the desired schedule number appears on the display screen. A faster technique for recalling a specific schedule is to input the Schedule number using the number keys.

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CHAPTER 3: WELDING SYSTEM SET-UP

UNITEK EQUIPMENT FORCE FIRED,

DUAL AIR ACTUATED WELD HEAD SYSTEM

General Information

Dual Air Actuated Weld Head System operation uses sequential action to activate one Weld Head and then a second weld head using a single HF2 Weld Control and HF2 Weld Transformer. The operator must close and release the Foot Switch to initiate each sequential weld. Sequential Weld Head activation ensures that only one weld current path exists at a single point in time. To use multiple Weld Heads simultaneously, refer to Chapter 3, Non-Force Fired, Multiple Air Actuated Weld Head System.

HF2 Weld Control, Jumper Modifications (Figure 3-3)

Warning: Before modifying jumpers, disconnect the 3-phase input power to the HF2 to prevent

serious injury.

1 Remove the HF2 Weld Control cover.

2 The HF2 Weld Control PCB is located

on the right-hand side of the HF2 Weld Control. Locate Jumpers E10 and E11 by looking in the lower right-hand corner of the HF2 Weld Control PCB.

3 Using a needle nose pliers, move

Jumpers E10 and E11 from the RELAY position to the HEAD2 position.

4 Replace the HF2 Weld Control cover.

5 Connect 3 phase input power to the

HF2.

Figure 3-3. HF2 Jumper Modifications

Weld Head Set-up (Figure 3-4)

1 Connect the Upper Weld Cable from each Weld Head to the Positive Terminal on the HF2

Weld Transformer.

2 Connect the Lower Weld Cable from each Weld Head to the Negative Terminal on the HF2

Weld transformer.

3 Adjust each Weld Head Force Adjust Knob to produce 5 units of force as displayed on the

Force Indicator. For a complete description of force control and its effect on the welding process, please refer to your Weld Head manual.

4 Install electrodes in each Weld Head Electrode Holder.

5 Parallel two sets of twisted wire cables to the clip end of the standard Voltage Sensing Cable

that is connected to the Weld Transformer front panel. Connect one twisted wire cable to the Left Weld Head electrodes and the other twisted wire cable to the Right Weld Head electrodes.

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Figure 3-4. Weld Cable and Air Line Connections for Dual Air Actuated Weld Heads

6 Connect a properly filtered air line to the Inlet Air Line on the Weld Head Air Valve Driver

Solenoid assembly which is located on the back of the Weld Head. Use 0.25 inch O.D. by 0.17 inch I.D. plastic hose with a rated burst pressure of 250 psi. Run separate air lines to each Inlet Air Line. Do not split a single 0.25 O.D. line into two lines or the Weld Heads will not have sufficient air flow to work properly. A lubricator should only be used with automated installations. Turn on the air system and check for leaks.

Firing Switch Cable Connection (Figure 3-5)

Connect the Weld Head Firing Switch Cable Connector on each Weld Head to the matching connectors on the Model DFS Parallel Switch Box. Connect the Model DFS Firing Switch Cable to the matching cable connector on the rear of the HF2 Weld Control.

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Weld Head Valve Driver Connections (Figure 3-5)

1 Each air actuated Weld Head has one Solenoid Valve Driver Cable for automatic actuation and

timing control by the HF2 Weld Control. The HF2 Weld Control will automatically recognize the solenoid voltage of your Weld Head. Connect the 4 pin black plastic connector on the Left Weld Head Solenoid Valve Driver Cable to the matching Air Valve 1 Driver connector located on the HF2 Weld Control rear panel.

2 Connect the 4 pin black plastic connector on the Right Weld Head Solenoid Valve Driver

Cable to the matching Air Valve 2 Driver connector located on the HF2 Weld Control rear panel.

Foot Switch Connection (Figure 3-5)

1 Connect a Model FS1L, 1-Level, or a Model FS2L, 2-Level Foot Switch to the FOOT

SWITCH connector located on the HF2 rear panel. The HF2 will automatically recognize which model of Unitek Equipment Foot Switch has been connected.

2 1-Level Foot Switch -- The l-Level Foot Switch must be fully depressed by the operator.

When the Foot Switch closes, the HF2 energizes the Air Actuated Weld Head, causing the Upper Electrode to descend and apply force to the parts. If the Foot Switch is released before the Weld Head applies the Preset Firing Force, the HF2 will automatically return the Upper Electrode to its up position.

3 2-Level Foot Switch -- When a 2-Level Foot Switch is pressed to the first level, the HF2

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Dual Air Regulator Adjustment (Model 188 - Figure 3-5)

Figure 3-5. Dual Air Actuated Weld Heads Electrical Connections

1 Set the HF2 Weld Control front panel WELD/NO WELD switch to NO WELD.

2 Turn the Power Switch located on the

HF2 Weld Control rear panel to ON. After a series of power up screens, the last RUN screen displayed will appear. Press the [CHNG] key to access the Weld Graph RUN screen for the BASIC WELD Function.

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CHAPTER 3: WELDING SYSTEM SET-UP

3 Press [MENU]. The MAIN MENU

screen will appear.

4 Select TRANSFORMER MODEL. The

TRANSFORMER MODEL screen appears.

5 Select MULTIPLE HEADS: OFF. If

the display reads ON, press [CHNG] until OFF is displayed.

6 Select HEAD 1 : X3/4000-230.

X3/4000-230 is the default Transformer Model number. Press [CHNG] until the correct Transformer Model that you have purchased appears.

7 Press [MENU] to return to the MAIN

MENU screen.

8 Select OPTIONS. The OPTIONS 1 screen

appears.

9 Press [ ] to select the OPTIONS 2

screen.

10 Select WELD HEAD TYPE: AUTO.

Press [CHNG] until the DUAL AIR option appears.

11 Press [MENU] to return to the MAIN

MENU.

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12 Select COPY A SCHEDULE. The

COPY SCHEDULE screen will appear.

13 Select the last flashing 0 of TO

SCHEDULE [ 0] and use the number keys to change the flashing 0 TO SCHEDULE [ 1].

14 Press [ENTER] to complete the

schedule copy process and to automatically return to the Weld Graph RUN State.

15 Press [MENU] to return to the MAIN

MENU.

16 Select COPY A SCHEDULE. The

COPY SCHEDULE screen will appear.

17 Select the last flashing 1 of TO

SCHEDULE [ 1] and use the number keys to change the flashing 1 TO SCHEDULE [ 2].

CHAPTER 3: WELDING SYSTEM SET-UP

18 Press [ENTER] to complete the

schedule copy process and to automatically return to the Weld Graph RUN State.

19 Press [PROGRAM] twice to select the

Alphanumeric PROGRAM screen.

20 Press the down vertical cursor key [W]

until the RELAY 1: NOT USED and RELAY 2: OFF option items appear.

21 Select RELAY 1: NOT USED. Press [CHNG] to select the AIR HEAD 2 option.

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22 Press [SAVE] to update Schedule 2,

then press [CHNG] to automatically return to the Weld Graph RUN State. You are now ready to adjust the Right Weld Head Air Regulators.

23 Turn both Air Regulators located on the

right-hand side of the Right Weld Head Clockwise (CW) to produce 10 psi on the Pressure Gauge.

24 Press and hold the Foot Switch

completely down to close all switch levels. The lower right hand corner of the display should show the status message STANDBY .

25 Turn the Air Regulator that feeds the

Top Right Air Cylinder on the Right Weld Head Clockwise (CW) until the HF2 automatic-ally returns the Upper Electrode to its up position. The lower right hand corner of the display should now show the status message END if you have not released the Foot Switch. Release the Foot Switch.

26 NOTE: You have 10 seconds to make

the Air Regulator adjustment or a buzzer alarm will sound and the HF2 will automatically return the Upper Electrode to its up position. The status message changes from STANDBY to ALARM FIRING SWITCH . Press [RUN] to clear the alarm, then repeat steps 24 and 25.

27 Re-adjust the Air Regulator that feeds the Bottom Right Air Cylinder on the Right Weld

Head to produce the same air pressure as finally used on the Top Air Regulator on the Right Weld Head.

28 Adjust the Right Weld Head Down Speed Control Knob so the Right Weld Head Upper

Electrode descends smoothly onto the parts.

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29 Adjust the Right Weld Head Up Speed Control Knob so that the Right Weld Head Upper

Electrode Holder does not impact upon returning to in up position.

30 Press [ W ] to select SCH:001 BASIC WELD. You are now ready to adjust the Left Weld

Head Air Regulators.

31 Repeat steps 24 through 29 for the Dual Air Weld Head System, All Regulator Adjustments

for the Left Weld Head.

Quick Start Programming Guide

1 Make a test weld using Schedule 1 by pressing on the Weld Head foot actuator until the HF2

Weld Control fires. The default WELD time of 1 ms and the default CURRENT of 0.5 KA may not be sufficient to make a good weld.

2 Press [PROG]. Press [ENTER] to

change SQUEEZE to WELD, as displayed in the upper right corner. Use the vertical cursor keys [ increase the weld CURRENT. Use the horizontal cursor keys [ ] to increase or decrease the WELD time. In this example, weld CURRENT has been increased to 0.7 KA and WELD time has been increased to 0.5 ms.

] to

3 Make additional test welds and then re-program WELD time and weld CURRENT as necessary

to make a good weld. Try to use the minimum time and current necessary to make a good weld so that the weld joint heat affected zone will be minimized.

4 Press [SAVE] to save the updated Schedule 1. You are now back in the Weld Graph RUN

State.

5 Press [>] to select SCH:002 BASIC WELD. You are now ready to make test welds using the

Right Weld Head.

6 Repeat steps 1 through 3 using the Right Weld Head.

7 Press [SAVE] to save the updated Schedule 2. You are now back in the Weld Graph RUN

State and ready to turn on the Chaining Feature, which will enable Schedule 1 to automatically sequence to Schedule 2, then back to Schedule 1.

8 Press [MENU] and then select

OPTIONS. Use the horizontal cursor key [

] to select the OPTIONS 1

screen.

9 Select CHAIN SCHEDULES

FEATURE: OFF. Press [CHNG] to change to ON.

10 Press [RUN] to return to the Weld

Graph RUN State.

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11 Press [PROGRAM] twice to select the

Alphanumeric PROGRAM screen for Schedule 2.

12 Verify that NEXT: 001 is correctly

displayed so that Schedule 2 will automatically advance to Schedule 1 after one weld has been completed. If you want to make more than one weld using Schedule 2 before advancing to Schedule 1, change STEP : 00001 to the desired number of welds.

13 Press [SAVE] to save the updated Schedule 2.

14 Press [ W ] to select SCH:001 BASIC WELD.

15 Press [PROGRAM] once to select the Alphanumeric PROGRAM screen for Schedule 1.

16 Select NEXT: 001. Change 001 to 002

so that Schedule 1 will automatically advance to Schedule 2 after one weld has been completed. If you want to make more than one weld using Schedule 1 before advancing to Schedule 2, change STEP : 00001 to the desired number of welds.

17 Press [SAVE] to save the updated Schedule 1. Press [CHNG] to return to the Weld Graph

RUN State. You are now ready to make alternating welds, beginning with Schedule 1, by just pressing on the Foot Switch to activate each weld.

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NON-FORCE FIRED, AIR OR CAM ACTUATED WELD HEAD SYSTEM

PLC to HF2 Weld Control Electrical Connections (Figure 3-6)

1 Connect your Programmable Logic

Control (PLC) or Host Computer output control signals to the HF2 Weld Control inputs using reed relays or the open collector of an opto coupler. The emitter of each opto coupler must be connected to The HF2 Weld Control Rear Panel Control Signals connector, Pin 11.

2 For a complete description of how to

program Relay 1 and Relay 2, reference

Chapter 5, Programming Modes, Output Relays.

3 For a complete description on how to use

the RS-485 Datacom feature, reference Chapter 9, RS-485 Datacom.

4 All weld schedules must be entered and

saved using the HF2 Weld Control Front Panel keys. After saving the desired weld schedules, each schedule can be recalled prior to initiating the welding process cycle by closing the binary Remote Schedule Select lines according to the following table:

WELD

SCHEDULE

0 0 0 0 0 0 0 0

1 1 0 0 0 0 0 0

2 0 1 0 0 0 0 0

3 1 1 0 0 0 0 0

4 0 0 1 0 0 0 0

Binary progression from 5 to 126

127 1 1 1 1 1 1 1

Pin 1

Pin 2

Figure 3-6. PLC to HF2 Weld Control

Electrical Connections

Pin 3

Pin 4

Pin 12

Pin 5

Pin 14

NOTE: 0 = Open; 1 = Closed

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PLC Timing Diagram (Figure 3-7)

Figure 3-7. PLC Timing Diagram.

Quick Start Programming Guide

1 Set the HF2 Weld Control front panel

WELD/NO WELD switch to NO WELD.

2 Turn the Power Switch located on the

HF2 Weld Control rear panel to ON. After a series of power up screens, the last RUN screen displayed will appear. Press the [CHNG] key to access the Weld Graph RUN screen for the BASIC WELD Function.

3 Press [MENU]. The MAIN MENU

screen will appear.

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CHAPTER 3: WELDING SYSTEM SET-UP

4 Select TRANSFORMER MODEL.

The TRANSFORMER MODEL screen appears.

5 Select MULTIPLE HEADS: OFF. If

the display reads ON, press [CHNG] until OFF is displayed.

6 Select HEAD 1 : X3/4000-230.

X3/4000-230 is the default Transformer Model number. Press [CHNG] until the correct Transformer Model that you have purchased appears.

7 Press [MENU] to return to the MAIN MENU screen.

8 Select OPTIONS. The OPTIONS 1 or

OPTIONS 2 screen appears. This example shows the OPTION 1 screen.

9 Press [ ] to select the OPTIONS 2

screen.

10 Select WELD HEAD TYPE: AUTO.

Press [CHNG] until the MANUAL option appears. Note: FOOTSWITCH TYPE: AUTO will automatically change to NONE.

11 Select FOOTSWITCH WELD ABORT:

ON. Press [CHNG] until the OFF option appears.

12 12.Press [RUN] to return to the Weld

Graph RUN State.

13 Set the HF2 Weld Control front panel WELD/NO WELD switch to WELD.

14 Make a test weld by pressing on the Weld Head foot actuator until the HF2 Weld Control fires.

The default WELD time of 1 ms and the default CURRENT of 0.5 KA may not be sufficient to make a good weld.

15 Press [PROG]. Use the vertical cursor

keys [

] to increase the weld CURRENT. Use the horizontal cursor keys [ ] to increase or decrease the WELD time. In this example, weld CURRENT has been increased to 0.7 KA and WELD time has been increased to 0.5 ms.

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16 Press [SAVE] to save your program. You are now back in the Weld Graph RUN State.

17 Make additional test welds and then re-program WELD time and weld CURRENT as necessary

to make a good weld. Try to use the minimum time and current necessary to make a good weld so that the weld joint heat affected zone will be minimized.

18 Up to 128 different weld schedules can be created and saved. To manually recall any specific

weld schedule, press the up or down vertical arrow keys [ ] until the desired schedule number appears on the display screen. A faster technique for recalling a specific schedule is to input the Schedule number using the number keys.

19 To recall any weld schedule automatically, use the binary Remote Schedule Select Control

Lines as discussed under the step 4 of the PLC to HF2 Weld Control Electrical Connections section.

NON-FORCE FIRED, MULTIPLE AIR ACTUATED WELD HEAD SYSTEM

This system configuration is not released.

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CHAPTER 4

CONTROLS

HF2 Weld Control - Front Panel (Figure 4-1)

Figure 4-1. HF2 Weld Control Front Panel

KEY DESCRIPTION

[KEYPAD] Use the numeric keys to enter numeric information. Use the [ . ] to enter decimal values.

[KEYPAD] Use the numeric keys to change weld schedules without the need to use the

[ ] keys. For example, pressing [1] [0] will recall weld schedule 10.

[ ] In the RUN State, press [ ] to select a higher number weld schedule or press

] to select a lower number weld schedule.

[

[ ] In PROGRAM and MENU States, use both [ ] to move up and down on the

LCD Display to select user options.

[

] In the PROGRAM and MENU States, use [ ] to select user options.

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[PROG] In the RUN State, press [PROG] to enter the Graphical PROGRAM State to make

changes to the selected weld schedule fields. Press [PROG] a second time to make changes using the Alphanumeric PROGRAM State. Press [PROG] a third time to make changes to the Weld Sentry programs related to the selected weld schedule. Press [PROG] a fourth time to return to the HF2 Graphical Program screen.

[RUN] In the PROGRAM State, press [RUN] to exit the PROGRAM State without

saving the changed weld schedule. The changed weld schedule will become Weld Schedule 0 and will not be written to permanent memory. Welding parts is done in the RUN State.

[RUN] In the MENU State, press [RUN] to exit the MENU State and begin welding

parts.

[SAVE] In the PROGRAM State, press [SAVE] to save the selected weld schedule and its

related Weld Sentry programs to permanent memory. The HF2 Weld Control will then automatically exit the PROGRAM State and return to the RUN State. [SAVE] has no function in the RUN State.

[MENU] In either the RUN or PROGRAM States, press [MENU] to provide a menu list of

user options which are common to all weld schedules.

[HELP] Press this key whenever you need HELP or additional information on any user

menu option or flashing user programmable field. The HF2 contains a built-in operating manual. Press [HELP] a second time to return to the original State.

[CHNG] In the PROGRAM State, press [CHNG] to restore the previous contents of a user

programmable field.

[CHNG] In the MENU State, press [CHNG] to select different menu options.

[CHNG] In the RUN State, press [CHNG] to change the Graphical RUN State screen to the

Alphanumeric RUN State screen.

[ENTER] Press [ENTER] after keying in numeric program data.

WELD/NO WELD Weld current will not flow when this switch is in the NO WELD position. SWITCH However, operation in the NO WELD switch position permits the HF2 to initiate

and execute a complete welding sequence without weld current flowing. Operating the HF2 in the NO WELD position is required to adjust Unitek Peco Weld Heads. This switch must be in the WELD position in order to make a weld.

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HF2 Weld Control - Rear Panel Inputs and Outputs

CHAPTER 4: CONTROLS

Figure 4-2. HF2 Weld Control Rear Panel

• POWER - Refer to Chapter 2, Power Line Voltage, Current, and Wire Size Requirements, for

complete instructions on how to properly apply power to the HF2 Weld Control.

• FUSES F1, F2 - Refer to Chapter 2, Power Line Fuse Requirements for complete

specifications for Power Line Fuse sizes.

• SENSING PORT

The Sensing Port contains both input and output lines for communicating to the HF2 Weld Transformer and the MA-600 Multiple Weld Head Selection Box. The connector attached to the end of the Sensing Port Cable is a 16 pin Honda, P/N: MC16LSF, (Unitek P/N: 250-235). This connector mates with the connector on the HF2 Weld Transformer.

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Sensing Port - Connector Pin Assignments

Pin No. Wire Color Description

1 Red Secondary Weld Current Measurement

2 Red +12 VDC

3 Red Secondary Weld Voltage Measurement

4 Red Weld Transformer Select Line 2 (For MA-600)

5 Red Weld Transformer Thermo Switch

6 Red Weld Transformer Select Line 4 (For MA-600)

7 Red Digital Signal Ground

8 Black 230 VAC Weld Transformer Fan

9 Black Secondary Weld Current Measurement Return

10 Black Weld Transformer Select Line 1 (For MA-600)

11 Black Secondary Weld Voltage Measurement Return

12 Black Weld Transformer Select Line 3 (For MA-600)

13 Black Weld Transformer Thermo Switch Return

14 Black Future Expansion

15 Red Future Expansion

16 Red 230 VAC Weld Transformer Fan Return

OUTPUT

The Output Cable feeds high voltage, pulse width modulated, primary weld current to the primary winding of the HF2 Weld Transformer. The connector attached to the end of the Output Cable is an AMP 206136-1 (Unitek P/N: 520-115). The mating connector on the HF2 Weld Transformer is an AMP 206137-1 (Unitek P/N: 550-071).

Pin No. Wire Color Description

1 Black Primary HF2 Weld Transformer

2 Red Primary HF2 Weld Transformer

4 Green Chassis Ground

6 White Primary HF2 Weld Transformer Return

7 Orange Primary HF2 Weld Transformer Return

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CHAPTER 4: CONTROLS

FOOT SWITCH Connector

HF2 Weld Control FOOT SWITCH connector uses a 4-pin Amphenol 91-PC4F (Unitek P/N: 550-1-

006) bulkhead connector that mates with an Amphenol 91-MC4M (Unitek P/N: 520-1-009).

Single-Level Foot Switch (Figure 4-3)

1 A Single-Level Foot Switch must be

fully depressed by the operator. When the Foot Switch closes, the HF2 Weld Control energizes the Air Actuated Weld Head, causing the Upper Electrode to descend and apply force to the parts. If the Foot Switch is released before the Weld Head applies the Preset Firing Force, the HF2 Weld Control will automatically return the Upper Electrode to its up position.

Connect a Unitek Model FS1L Foot Switch, reed relay, or the open collector of an opto coupler to the Foot Switch connector to initiate the welding process. The emitter of the opto coupler must be connected to Pin 4.

Figure 4-3. Single-Level Foot Switch

3 When using a non-Unitek Peco Foot Switch, connect Pin 2 to Pin 3.

Two-Level Foot Switch (Figure 4-4)

1 When a Two -Level Foot Switch is

pressed to the first level, the HF2 Weld Control energizes the Air Actuated Weld Head, causing the Upper Electrode to descend and apply force to the parts. If the Foot Switch is released before the operator presses the Foot Switch to the second level, the HF2 Weld Control will automatically return the Upper Electrode to its up position so that the parts can be re-positioned. Once the second level has been reached and the Force Firing Switch in the Weld Head has closed, Weld Current will

Figure 4-4. Two-Level Foot Switch

flow and the HF2 Weld Control will automatically return the Upper Electrode to its up position.

2 Connect a Unitek Model FS2L Foot Switch, reed relay, or the open collector of an opto

coupler to the Foot Switch connector to initiate the welding process. The emitter of the opto coupler must be connected to Pin 4.

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CHAPTER 4: CONTROLS

Firing Switch Operation

The HF2 Weld Control can use: (a) a Single Pole, Single Throw Switch (SPST); (b) a Single Pole, Double Throw (SPDT 3-wire) Switch; or (c) an Optical Switch as an input signal to indicate when the Weld Head has applied the proper force to the parts. Weld Heads with single pole Firing Switches should be connected to the Mechanical Firing Switch Connector. A 3-Wire Switch or Optical Firing Switch, either of which should be connected to the Optical Firing Switch Connector, eliminate switch bounce, which causes false triggering, and should be used when the welding speed exceeds 1.5 welds per second.

MECHANICAL FIRING SWITCH Cable

1 The Mechanical Firing Switch Cable is

5 feet long, Type 2/C, 600 volt cable and contains 2 shielded, twisted 22 AWG conductors of high-flex stranded wire. The Firing Switch Connector is a 2-pin Amphenol 80-MC2FI (Unitek P/N: 520-011), with strain relief that mates with an Amphenol 80-MC2M (Unitek P/N: 520-001). Pin 2 is Digital Ground.

2 Connect a Unitek Model Weld Head

Firing Switch, reed relay, or the open collector of an opto coupler to the Foot Switch connector to initiate weld

Figure 4-5. Mechanical Firing Switch

current. The emitter of the opto coupler must be connected to Digital Ground, Pin 2.

OPTICAL FIRING SWITCH Connector

The Optical Firing Switch Connector is a 5 pin AMP 212044-1 (Unitek P/N: 550-064) bulkhead connector and mates with an AMP Assembly consisting of an AMP 212437-3 Plug, 212435-7 Ferrule and 212800-1 Strain Relief. The Optical Firing Switch can be used in two configurations for initiating a welding process: a) Single Pole Double Throw (SPDT 3-wire); or b) Opto Coupler.

Mechanical Firing Switch - 3-Wire Connection

A SPDT (3-wire) mechanical switch can be connected to the Optical Firing Switch connector

Figure 4-6. Wire Firing Switch

to eliminate the use of Switch Debounce Time when welding at rates of 1.5 welds/second.

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Opto Coupler Firing Switch - 3-Wire Connection

A SPDT opto coupler switch can be connected to the Optical Firing Switch connector to eliminate the use of Switch Debounce Time when welding at rates of greater than 1.5 welds/second.

CONTROL SIGNALS Connector

1 A 15-pin, sub-miniature "D" Control

Signals Connector includes inputs for: (a) Remotely selecting weld schedules 1 through 127; (b) Inhibiting the HF2 Weld Control from beginning a new welding process; and (c) Invoking an Emergency Stop Condition which abruptly terminates the welding process. The Control Signals inputs and outputs are designed to be used with a Programmable Logic Control (PLC) (see Figure 4-8) or a Host Computer in automated environments.

Figure 4-7. Opto Coupler Firing Switch

CHAPTER 4: CONTROLS

2 When an external chain control box is

connected to the Control Signals Connector in place of a PLC, chained weld schedules can be implemented semiautomatically with an external chain control box (see Figure 4-9).

The Control Signals Connector also includes outputs for: a) One DC Solid State Relay; and b) One AC Solid State Relay.

4 The 15 pin connector is a Viking

DMRST15RA05CG (Unitek P/N: 2501-195). The mating connector is a TRW Cinch Connector comprised of a DA-15P (Unitek P/N: 250-1-199) male connector and a DE-51210-1 (Unitek P/N: 250-1-200) plastic junction shell. The mating connector is included in the HF2 Weld Control Shipping Kit.

Figure 4-8. Control Signals Connection

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Figure 4-9. Remote Chain Control Box

Input/Output Signals

CHAPTER 4: CONTROLS

5 Connect a reed relay, or the open collector of an opto coupler to the Control Signals connector

to initiate the selection process. The emitter of the opto coupler must be connected to Pin 11. Keep the selected input closed to maintain the selection.

Control Signals - Pin Assignments

Pin No. I/O Description

1 Input PLC input: Remote Weld Schedule Selection, Control Line 20

Chain control box (CCB) input: Schedule Down (decrement number)

2 Input PLC input: Remote Weld Schedule Selection, Control Line 21

CCB input: Schedule Up (increment number)

3 Input PLC input: Remote Weld Schedule Selection, Control Line 22

CCB input: Reset (set schedule # to power up schedule #)

4 Input PLC input: Remote Weld Schedule Selection, Control Line 23

CCB input: Auto/Manual (enable/disable chain function)

5 Input Remote Weld Schedule Selection, Control Line 25

6 Out-put Relay K2, + 5-50 VDC (User must supply power)

7 NC

8 Out-put Relay K1, 24-115 VAC (User must supply power)

9 Input Process Inhibit

10 Input Emergency Stop

11 Input Circuit Ground

12 Input Remote Weld Schedule Selection, Control Line 24

13 Out-put Relay K2, + 5-50 VDC Return

14 Input Remote Weld Schedule Selection, Control Line 26

15 Out-put Relay K1, 24-115 VAC Return

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Control Signals - Remote Weld Schedule Selection Input

All weld schedules must be entered and saved using the HF2 Weld Control Front Panel keys. After saving the desired weld schedules, each schedule can be recalled prior to initiating the welding process cycle. Using the PLC (Figure 4-8), remote weld schedule selection (chain schedule feature turned off) can be implemented by closing the binary Remote Schedule Select lines according to the following table:

WELD

SCHED

0 0 0 0 0 0 0 0

1 1 0 0 0 0 0 0

2 0 1 0 0 0 0 0

Binary progression from 3 to 126

127 1 1 1 1 1 1 1

NOTE: 0 = Open; 1 = Closed

Using a remote chain control box in place of the PLC, a semi-automatic chain weld schedule can be used to control the remote schedule select lines through the Control Signals Connector in accordance with the following table:

Pin No. Function Description

Pin 1 21 Pin 2 22 Pin 3 23 Pin 4 24 Pin 12 25 Pin 5 26 Pin 14

1 Schedule Down Decrement the schedule number

2 Schedule Up Increment the schedule number

3 Reset Set the schedule number = power up schedule number

4 Auto/Manual Enable (Auto)/disable (Manual) the chain schedule function

Note: If (Manual) is selected on pin 4, the chain control box will override the HF2 chain schedule on/off function and weld schedules can be selected manually from the chain control box (see Figure 4-9).

Control Signals - Emergency Stop Input (Figure 4-8)

Connect a reed relay, or the open collector of an opto coupler to Pin 10 of the Control Signals connector to immediately terminate the welding process. No welding process can be initiated until the switch closure has been removed. The emitter of the opto coupler must be connected to Pin 11.

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CHAPTER 4: CONTROLS

Control Signals - Process Inhibit Input (Figure 4-8)

Connect a reed relay, or the open collector of an opto coupler to Pin 9 of the Control Signals connector to prevent a new welding process from beginning. No welding process can be initiated until the switch closure has been removed. The emitter of the opto coupler must be connected to Pin 11.

Control Signals - Output Relays (Figure 4-8)

There are two output relays which can be used to provide status or timing signals to a user Programmable Logic Control (PLC) or Host Computer. Relay K1 can switch a 24 to 115 VAC signal. Relay K2 can switch a 5 to 50 VDC signal. When used for status signals, these relays can be independently programmed to close (a) when the HF2 Weld Control is initiated; (b) when any portion of the welding process is completed; (c) when the Firing Switch opens; or (d) when the HF2 Weld Control is waiting for the welding process sequence to start.

Relay K1 (Figure 4-10)

1 Connect a 24 to 115 VAC voltage

source and PLC load to Pins 8 and 15 on the Control Signals Connector. Maximum relay current is limited to 250 ma.

2 Relay K1 is also used to control the Air

Valve 2 Driver for sequentially activating a second Air Actuated Weld Head. Refer to Chapter 3, Unitek Peco,

Force Fired, Dual Air Actuated Weld Head System for complete instructions

to set up and operate two sequential action Air

Figure 4-10. Relay K and K2 Connections

Actuated Weld Heads. When MENU, OPTIONS 2, WELD HEAD TYPE: is set to DUAL AIR, the options for RELAY 1 must be either AIR HEAD 2 or NOT USED. Air Valve 2 Driver will be actuated in any Schedule in which RELAY 1 is defined as AIR HEAD 2. Air Valve 1 Driver is actuated in any Schedule in which RELAY 1 is defined as NOT USED.

Relay K2 (Figure 4-10)

Connect a 5 to 50 VDC voltage source and PLC load to Pins 6 (Positive) and 13 (Negative) on the Control Signals Connector. Maximum relay current is limited to 250 ma.

Accessory Port (Figure 4-2)

A 25-pin, sub-miniature D-type connector, located on the rear panel, is provided to control other devices contemplated for future expansion.

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AIR VALVE 1 and AIR VALVE 2 Driver Connectors (Figure 4-11 and Figure 4-12)

Air Valve 1 Driver (Figures 4-11 and 4-12)

Each Air Valve Driver uses a 4-pin black plastic AMP 206430-1 (Unitek P/N: 550-062) bulkhead connector. The mating plug is an AMP 2064291 (Unitek P/N: 520-107) which uses a cable clamp, Amp 206358-2 (Unitek P/N: 245-084) and 3 male pins AMP 66361-2 (Unitek P/N: 253-

055). When using a non-Unitek Peco Air Actuated Weld Head, connect Pin 2 to Pin 4. The HF2 Weld Control can sequentially operate two separate Air Actuated Weld Heads using Air Valve 1 Driver and Air Valve 2 Driver outputs.

Air Valve 1 Driver (Figures 4-11 and 4-12)

The output of Air Valve 1 Driver is 12 VA at 115 or 24 volts VAC. The HF2 Weld Control automatically applies the correct solenoid voltage to the Air Actuated Weld Head connected to the Air Valve 1 Driver.

Air Valve 2 Driver (Figure 4-12)

Figure 4-11. 115 VAC Weld Head Solenoid

Air Valve 2 Driver provides 24 VAC at 12 VA to power a second Air Actuated Weld Head. To provide 24 VAC to Air Valve 2 Driver, jumpers E10 and E11 on the control board must be

Figure 4-12. 24 VAC Weld Head Solenoid

moved to the correct positions. Refer to Chapter 3, Unitek Peco, Force Fired, Dual Air Actuated Weld Head System for complete instructions to set up and operate two sequential action Air

Actuated Weld Heads. Note: When Air Valve 2 Driver is used, Relay K1 cannot be used for marking weld periods or activating alarm conditions.

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CHAPTER 5

PROGRAMMING MODES

Help Screens

NOTE: We offer our non-English speaking users help screens written in various languages (refer to Appendix D). For further information, please contact the factory.

1 The HF2 Weld Control offers the user

context sensitive HELP when running or programming. Press [HELP] whenever you want information about a Menu Option or program variable. Press [HELP] again to return to the original screen. For example, if you press [HELP] from the RUN State, information on the function of the Weld Graph and Alphanumeric screens will appear.

2 To read the second page of help

information, press the right horizontal cursor key [ ].

3 To return to the first page of help information, press the left horizontal cursor key [ ].

Machine States

The HF2 Weld Control has eight Machine States: RUN, NO WELD, STANDBY, ALARM, FIRE, MENU, PROGRAM, and HELP. The NO WELD State represents the positional status of the WELD/NO Switch on the front panel. The STANDBY, ALARM, and FIRE states are functions of MECHANICAL FIRING, OPTICAL FIRING, and FOOT SWITCH input states. The operator can force the HF2 Weld Control into the RUN, MENU, PROGRAM, and HELP states by pressing the [RUN], [MENU], [PROG] or [HELP] keys.

Weld Graph RUN State

In the Weld Graph RUN State, the HF2 Weld Control is ready to make a weld. You can select, but not change, any weld schedule by using the vertical cursor keys [ Panel. Weld schedules may also be selected by using the numeric keypad to key in the desired weld schedule number: 000 through 127.

] or [ ] on the Front

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Basic Weld Monitor Run State

When MENU, OPTIONS 1, WELD MONITOR: is set to BASIC, pressing [CHNG] will cause the display screen to switch from the Weld Graph RUN screen to the Basic Weld Monitor RUN screen. Setting WELD MONITOR to LIMIT causes the Energy Limit Monitor screen to be displayed. See Chapter 7 and Chapter 8 for detailed instructions.

Pressing [CHNG] again causes the Basic Weld Monitor RUN screen to switch to the Alphanumeric RUN screen. Pressing [CHNG] once more returns the display screen to the Weld Graph RUN screen.

Alphanumeric RUN State

Pressing [CHNG] will cause the display screen to change from the Basic Weld Monitor RUN screen, if this option has been set to ON, to the Alphanumeric RUN screen. Pressing [CHNG] again will return the HF2 Weld Control to the Weld Graph screen. Welding can be performed in any RUN screen.

NO WELD State

Switching the WELD/NO WELD front panel switch to the NO WELD position prevents weld current from flowing but does permit the HF2 Weld Control to performing its electronic functions. Use the NO WELD State when adjusting the air regulators on Air Actuated Weld Heads.

STANDBY State

The HF2 Weld Control is waiting for a mandatory event to occur such as: (a) the Firing Switch in a Unitek Peco Air Actuated Weld Head to close; (b) the second level of a 2-Level Foot Switch to close; or (c) waiting to be reset to another schedule after a STOP Command in a Chained Schedule.

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ALARM State

The HF2 Weld Control automatically recognizes many alarm conditions which are described in detail under Appendix C, Alarm Messages. The ALARM FIRING SWITCH screen shown on the right is displayed when the Firing Switch of a Unitek Peco Air Actuated Weld Head does not close within 10 seconds.

FIRE State

Once weld current is flowing, the HF2 Weld Control is in the Fire State. Weld current can be terminated by: (a) removing the first level of a single-level Foot Switch; (b) removing the second level of a two-level Foot Switch; or (c) shorting the Emergency Stop Control Signals Input Pin 10 to Pin 11. Completion of the Firing State is indicated by momentary appearance of the END status message as shown in the example to the right.

MENU State

CHAPTER 5: PROGRAMMING MODES

Pressing [MENU] puts the HF2 Weld Control in the MENU State, which offers you different options common to all weld schedules such as how the HF2 Weld Control interfaces with the Firing Switch, Foot Switch, and Weld Head. Like a tree with many branches, there are multiple Menu levels. Each new level is accessed by making an option selection, then pressing [ENTER]. To return to a previous Menu level, press [MENU]. For a complete description on Menu Options, refer to Chapter 7,

System Options.

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CHAPTER 5: PROGRAMMING MODES

PROGRAM State

1 In the PROGRAM State, the HF2 Weld Control allows the user to change and save any weld

schedule. In those units which include the Weld Sentry Option, the PROGRAM State also allows the user to change the Measurement Unit, the Limits related to each Weld Sentry program, as well as the other parameters associated with the Weld Sentry.

2 A single weld schedule uses one Weld Function. A Weld Function is defined as a series of user

programmable time periods, some of which have programmable weld current, voltage, or power levels. Some periods such as SQUEEZE, COOL, QUENCH, HOLD, and OFF do not have any weld current values associated with them. For a complete description of all Weld Functions, their time periods, and limit values, refer to Chapter 6, Advanced Welding Functions.

3 SQUEEZE Time is automatically included as a weld schedule program variable when MENU

OPTIONS 2, WELD HEAD TYPE: is set to AUTO, AIR, or DUAL AIR and an Air Actuated Weld Head is connected to the HF2 Weld Control. Squeeze Time allows sufficient time for a non-force fired Weld Head to apply the required weld force to the work pieces. Squeeze Time is not normally used with Unitek Peco force fired Weld Heads. The weld period will start as soon as the Squeeze Time expires. Squeeze Time can be set to any number between 0 and 2000 ms.

NOTE: There are two methods of programming the HF2 Weld Control: (a) use the Weld Graph PROGRAM State; or (b) use the Alphanumeric PROGRAM State.

Weld Graph PROGRAM State

1 Use the vertical cursor keys [ VW ] to

select the weld schedule that you want to modify. Press [PROG] to enter the Weld Graph PROGRAM State.

2 Press [ENTER] to select the period that

you want to modify. Note: the upper right-hand corner shows the selected period. Use the horizontal cursor keys [ ] to increase or decrease the period time base which is also displayed in the upper right-hand corner following the selected period. You can also change the period time base by using the keypad to directly enter the exact time. Periods such as SQUEEZE, COOL, QUENCH, HOLD, and OFF do not have any weld current, voltage, or energy values. This example shows an Air Actuated Weld Head schedule with the SQUEEZE period set to 0000 ms.

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3 Periods such as WELD, WELD1,

WELD2, and TEMPER have user programmable time base values and weld current, voltage, or energy values. To change the Feedback Type for any of these weld periods, press the keypad decimal point [.] multiple times until the upper left-hand portion of the screen shows the desired Feedback Type. This example shows a WELD period of 15 ms with the weld CURRENT set to 0.5 kA.

4 To change the weld current, use the

vertical cursor keys [ VW ] to increase or decrease the weld CURRENT. Note: when holding the vertical cursor keys down to change the weld CURRENT, the horizontal bar representing the weld CURRENT will not move to its new position until the vertical cursor keys [ ] are released. However, the weld CURRENT value displayed in the upper left-hand corner will automatically scroll during this change process. In this example, weld CURRENT has been increased to 0.7 kA and WELD time has been increased to 20 ms.

CHAPTER 5: PROGRAMMING MODES

5 Press [SAVE] to save the updated weld schedule. You are now back in the Weld Graph RUN

State.

Alphanumeric PROGRAM State

1 Use the vertical cursor keys [ VW ] to select the weld schedule that you want to modify. From

the Weld Graph RUN State or Basic Weld Monitor RUN State, press [PROG] multiple times to enter the Alphanumeric PROGRAM State. If you are already in the Alphanumeric PROGRAM State, press [PROG] once.

2 Use the vertical cursor keys [ VW ] and

horizontal cursor keys [ ] to select the program value that you want to change. Use [CHNG] to select CURRENT, VOLTAGE or POWER Feedback. Use the numeric keypad to enter variable values. This example shows the alpha-numeric version of weld schedule 000 in the middle of this

page. Weld CURRENT is set to 0.7 kA and WELD time to 20 ms.

3 Press [SAVE] to save the updated weld schedule.

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CHAPTER 5: PROGRAMMING MODES

4 Press [CHNG] To operate the HF2 Weld Control in the Weld Graph State.

Output Relays

The HF2 Weld Control has two solid state relays which can be used to provide status or timing signals to a user Programmable Logic Control (PLC). For a full description on how to connect Relay K1 and Relay K2, refer to Chapter 4, Control Signals, Output Relays.

1 Relay K1 and Relay K2 can only be programmed in the Alphanumeric PROGRAM State.

2 Use the vertical cursor keys [ VW ] to select the weld schedule that you want to modify. From

the Weld Graph RUN State or Basic Weld Monitor RUN State, press [PROG] multiple times to enter the Alphanumeric PROGRAM State. If you are already in the Alphanumeric PROGRAM State, press [PROG] once.

3 Press [ W ] until the RELAY 1 and

RELAY 2 legends are displayed. Both relays can be activated in the SQUEEZE, WELD, and HOLD periods. Press [CHNG] to select ON. In this example, RELAY 1 will turn on during the WELD period.

4 There are four more RELAY 1 options

listed under the SQZ period column. Press [CHNG] to select the RUN STATE option. In this example, notice that the RELAY 1 options for the WELD and HOLD periods disappear. Selecting the RUN STATE option will cause RELAY 1 to always be on when the HF2 is not making a weld.

5 Press [CHNG] until the ALARM (NO)

option appears. An ALARM condition causes RELAY 1 to switch from the normally open (NO) state to the closed state. RELAY 1 automatically opens when the alarm condition is cleared by pressing [RUN] or when the next welding sequence begins.

Press [CHNG] until the ALARM (NC) option appears. An alarm condition causes RELAY 1 to switch. An alarm condition causes RELAY 1 to switch from the normally closed state (NC) to the normally open state. RELAY 1 automatically closes when the alarm condition is cleared by pressing [RUN] or when the next welding sequence begins.

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CHAPTER 5: PROGRAMMING MODES

7 Press (CHNG] until the END PROCESS option appears. RELAY 1 automatically turns ON

for a period of 20 msec after the last TIME period.

RELAY 1 - Dual Air Head Operation

1 RELAY 1 has one additional option not

shared with RELAY 2. RELAY 1 is also used to control the Air Valve 2 Driver for sequentially activating a second Air Actuated Weld Head. Refer to Chapter 3, Unitek Peco, Force Fired, Dual Air Actuated Weld Head System for complete instructions to set up and operate two sequential action Air Actuated Weld Heads.

2 When MENU OPTIONS 2, WELD HEAD TYPE: is set to 'DUAL AIR", the options for

RELAY 1 must be either AIR HEAD 2 or NOT USED. Air Valve 2 Driver will be actuated in any Schedule in which RELAY 1 is defined as AIR HEAD 2. Air Valve 1 Driver is actuated in any Schedule in which RELAY 1 is defined as NOT USED. This example shows RELAY 1 set to turn on AIR HEAD 2.

3 Press [SAVE] to save the updated weld schedule.

4 Press [CHNG] to operate the HF2 Weld Control in the Weld Graph State.

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CHAPTER 6

ADVANCED WELD FUNCTIONS

Weld Functions

A weld function is a unique heat profile created by weld current, voltage, or power that is applied over a fixed time period, to resistance weld different parts. Welding applications requiring the use of specialized weld functions include: (a) parts plated with cadmium, tin, zinc, or nickel; b) parts with heavy oxide coatings such as aluminum; (c) parts that are round or not flat; or (d) parts made of refractory metals such as molybdenum or tungsten.

The HF2 Weld Control is shipped with ten pre-programmed weld functions that are saved in Weld Schedules 001 through 010. While these factory pre-programmed weld functions do not contain sufficient weld time or weld energy for most welding applications, they are a useful starting point to begin welding. Please note that WELD/REPEAT will only work with Air Actuated Weld Heads. The table below lists each Weld Function and its general application.

Weld Function

Pre-Prog

Schedule

Typical Application

BASIC WELD 001 Make single spot welds on simple flat parts without plating.

WELD/REPEAT 002 Make multiple semi-automatic spot welds using an operator.

QUENCH/TEMPER 003 Spot weld flat or round parts that have minimum plating thickness.

PRE/POSTHEAT 004 Forge weld heavily oxidized or refractory parts such as molybdenum or tungsten.

UP/DOWNSLOPE 005 Weld round parts, parts that are not flat, spring steel parts, or heavily plated or

oxidized parts such as aluminum.

BRAZE 006 Reflow two parts together using a braze material.

ROLLSPOT 007 Make automated multiple weld spots using automatic feeders and PLC or host

computer.

SEAM 008 Make automated hermetic seam welds using automatic feeders, and PLC or host

computer control.

Make manual or semi-automatic non-hermetic seam welds using an operator.

DUAL PULSE 009 Use for best control of miniature and small parts spot welding with or without

plating.

PULSATION 010 Use only for spot welding simple parts where the total weld energy or weld time

required to make an acceptable weld using any other Weld Function is marginal. Using the Pulsation Weld Function can damage the crystal structure of the parts.

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CHAPTER 6: ADVANCED WELD FUNCTIONS

BASIC WELD (Figure 6-1)

Basic Weld is a term used by the industry to describe the simplest heat profile used in the majority of resistance spot welding applications. Use Basic Weld to make single spot welds on flat parts that do not have any plating or heavy oxides. Basic Weld can be used with Unitek Peco Force Fired Manual or Air Actuated Weld Heads. For Manually Actuated Weld Heads, weld current begins when the Force Firing Switch closes. For Force Fired Air Actuated Weld Heads, weld current begins when both levels of a two-level Foot Switch are closed and the Force Firing Switch in the Air Actuated Weld Head closes.

When Basic Weld is used with a Non-Force Fired Air Actuated Weld Head, the Squeeze (SQZ) Period must be used to allow sufficient time for the electrodes to close and apply the required weld force to the parts before the Weld Period begins. Weld current begins when the Squeeze Period ends and both levels of a two-level Foot Switch are closed.

Figure 6-1. Basic Weld

When Basic Weld is used with any type of Air Actuated Weld Head, the Hold Period can be used to automatically keep the electrodes closed on the parts after weld current has terminated for the purpose of providing additional heat sinking or parts cooling. Squeeze and Hold Periods have no meaning with Manually Actuated Weld Heads and do not appear on either the weld schedule Program or Run screens.

Basic Weld - Weld Graph Run Screen (Figure 6-2)

Weld Schedule 001 is pre-programmed at the factory for Basic Weld operation. The HF2 Weld Control automatically recognizes the presence of a Manually or Air Actuated Weld Head before the first weld is made.

Basic Weld - Alphanumeric Run Screen (Figure 6-3)

To simultaneously view all pre-programmed time periods and energy settings, press [CHNG] to select the Alphanumeric Run screen. The 7 digit Weld Counter is displayed in the upper right corner.

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WELD/REPEAT (Figure 6-4)

Weld/Repeat provides a repeat capability for simple automated Air Actuated Weld Head applications using an operator. This weld function is ideal for volume production, which requires a single schedule.

Weld/Repeat can only be used with an Air Actuated Weld Head. For Force Fired Air Actuated Weld Heads, weld current begins when both levels of a two-level Foot Switch are closed and the Force Firing Switch in the Air Actuated Weld Head closes.

When Weld/Repeat is used with a Non-Force Fired Air Actuated Weld Head, the Squeeze (SQZ) Period must be used to allow sufficient time for the electrodes to close and apply the required weld force to the parts before the Weld Period begins. Weld current begins when the Squeeze Period ends and both levels of a two-level Foot Switch are closed.

When Weld/Repeat is used with any type of Air Actuated Weld Head, the Hold Period can be used to automatically keep the electrodes closed on the parts after weld current has terminated for the purpose of providing additional heat sinking or parts cooling. Squeeze and Hold Periods have no meaning with Manually Actuated Weld Heads and do not appear on either the weld schedule Program or Run screens. Off Period, which is applicable only to Weld/Repeat, sets the cycling rate between spot welds by controlling how long the electrodes remain open to allow the parts to be repositioned before the entire weld process repeats.

Weld/Repeat Weld Graph Run Screen (Figure 6-5)

Figure 6-4. Weld/Repeat

Weld schedule 002 is pre-programmed at the factory for Weld/Repeat operation and will only function using an Air Actuated Weld Head.

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CHAPTER 6: ADVANCED WELD FUNCTIONS

Weld/Repeat Alphanumeric Run Screen (Figure 6-6)

To simultaneously view all pre-programmed time periods and energy settings, press [CHNG] to select the Alphanumeric Run screen. The 7 digit Weld Counter is displayed in the upper right corner.

QUENCH/TEMPER (Figure 6-7)

Quench/Temper is typically used to weld flat-toflat, round-to-round, or round-to-flat parts together that are plated. Properly used, Quench/Temper can significantly reduce weld splash and electrode sticking.

Figure 6-6. Weld/Repeat

Alphanumeric Screen.

In the normal application of Quench/Temper, the Weld Period provides sufficient heat to displace the plating or oxides, seat the electrodes against the base metals, and force the parts into intimate contact. The Quench Period allows time to dissipate the heat generated during the Weld Period. The Temper Period completes the structural weld. The Temper Period weld current should be greater than the Weld Period weld current by a factor of two or three since the first bond significantly reduces the resistance of the interface between the parts.

Another use for Quench/Temper is to control grain refinement in the parts. In this application, the Weld Period weld current makes the structural weld. The parts cool during the Quench Period. The low level Temper Period weld current completes the heat treating process by providing sufficient heat to permit grain realignment. In this application, the weld current magnitudes for both the Weld and Temper Periods are completely opposite to those shown in Figure 6-7. 410 stainless steel is one of the materials which must be heat treated (annealed) in order to eliminate the brittle, crystalline structure caused by the weld current. This application of Quench/Temper is not usually used in the form just described for welding small parts.

Quench/Temper can be used with Unitek Peco Force Fired Manual or Air Actuated Weld Heads. For Manually Actuated Weld Heads, weld current begins when the Force Firing Switch closes. For Force Fired Air Actuated Weld Heads, weld current begins when both levels of a two-level Foot Switch are closed and the Force Firing Switch in the Air Actuated Weld Head closes.

Figure 6-7. Quench/Temper

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When Quench/Temper is used with a Non-Force Fired Air Actuated Weld Head, the Squeeze (SQZ) Period must be used to allow sufficient time for the electrodes to close and apply the required weld force to the parts before the Weld Period begins. Weld current begins when the Squeeze Period ends and both levels of a two-level Foot Switch are closed.

When Quench/Temper is used with any type of Air Actuated Weld Head, the Hold Period can be used to automatically keep the electrodes closed on the parts after weld current has terminated for the purpose of providing additional heat sinking or parts cooling. Squeeze and Hold Periods have no meaning with Manually Actuated Weld Heads and do not appear on either the weld schedule Program or Run screens.

Quench/Temper - Weld Graph Run Screen (Figure 6-8)

Weld schedule 003 is pre-programmed at the factory for Quench/Temper operation. The HF2 Weld Control automatically recognizes the presence of a Manually or Air Actuated Weld Head before the first weld is made.

Figure 6-8. Quench/Temper -

Weld Graph Run Screen

Quench/Temper - Alphanumeric Run Screen (Figure 6-9)

To simultaneously view all pre-programmed time periods and energy settings, press [CHNG] to select the Alphanumeric Run screen. The 7 digit Weld Counter is displayed in the upper right corner.

PRE/POSTHEAT (Figure 6-10)

Pre/Postheat is very similar to Quench/Temper. Pre/Postheat is also typically used to weld flat-toflat, round-to-round, or round-to-flat parts together that may or may not be plated. In addition, Pre/ Postheat works well to create forge type welds when welding refractory materials such as molybdenum and tungsten together. Pre/ Postheat is the most versatile of all of the weld functions. The user can construct a custom weld function by controlling the three Periods, Preheat, Weld, and Postheat and their related weld currents.

Figure 6-9. Quench/Temper -

Alphanumeric Screen

Figure 6-10. Pre/Post Heat

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Weld Periods not required can be set to zero. Properly used, Pre/Postheat can significantly reduce weld splash and electrode sticking.

In the normal application of Pre/Postheat, the Preheat Period provides sufficient heat to displace the plating or oxides, seat the electrodes against the base metals, and force the parts into intimate contact. The Preheat Period should be two or three times longer than the Weld Period, which completes the structural weld. The Weld Period weld current should be greater than the Preheat Period weld current by a factor of two or three since the first bond significantly reduces the resistance of the interface between the parts. The Postheat Period immediately follows to provide grain refinement in the parts.

Pre/Postheat can be used with Unitek Peco Force Fired Manual or Air Actuated Weld Heads. For Manually Actuated Weld Heads, weld current begins when the Force Firing Switch closes. For Force Fired Air Actuated Weld Heads, weld current begins when both levels of a two-level Foot Switch are closed and the Force Firing Switch in the Air Actuated Weld Head closes.

When Pre/Postheat is used with a Non-Force Fired Air Actuated Weld Head, the Squeeze (SQZ) Period must be used to allow sufficient time for the electrodes to close and apply the required weld force to the parts before the Weld Period begins. Weld current begins when the Squeeze Period ends and both levels of a two-level Foot Switch are closed.

When Pre/Postheat is used with any type of Air Actuated Weld Head, the Hold Period can be used to automatically keep the electrodes closed on the parts after weld current has terminated for the purpose of providing additional heat sinking or parts cooling. Squeeze and Hold Periods have no meaning with Manually Actuated Weld Heads and do not appear on either the weld schedule Program or Run screens.

Pre/Postheat - Weld Graph Run Screen (Figure 6-11)

Weld schedule 004 is pre-programmed at the factory for Pre/Postheat operation. The HF2 Weld Control automatically recognizes the presence of a Manually or Air Actuated Weld Head before the first weld is made.

Pre/Postheat - Alphanumeric Run Screen (Figure 6-12)

To simultaneously view all pre-programmed time periods and energy settings, press [CHNG] to select the Alphanumeric Run screen. The 7 digit Weld Counter is displayed in the upper right corner.

Figure 11. Pre/Postheat

Weld Graph Screen

Figure 12. Pre/Postheat

Alphanumeric Screen

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CHAPTER 6: ADVANCED WELD FUNCTIONS

UP/DOWNSLOPE (Figure 6-13)

Up/Downslope facilitates welding material combinations such as aluminum-to-aluminum or platinum-to-tungsten. Up Slope allows a reduction in electrode force, resulting in a cleaner appearance by reducing electrode indentation, material pickup and electrode deformation. Up Slope can also be used to displace plating and/or oxides, reduce flashing and spitting, or reduce thermal shock when welding parts containing glass-to-metal seals. Downslope assists in the grain refinement of certain heat-treatable steels and prevents cracking in aluminum and other materials by reducing the cooling rate.

Up/Downslope can be used with Unitek Peco Force Fired Manual or Air Actuated Weld Heads. For Manually Actuated Weld Heads, weld current begins when the Force Firing Switch closes. For Force Fired Air Actuated Weld Heads, weld current begins when both levels of a two-level Foot Switch are closed and the Force Firing Switch in the Air Actuated Weld Head closes.

Figure 13. Pre/Postheat

Alphanumeric Screen

When Up/Downslope is used with a Non-Force Fired Air Actuated Weld Head, the Squeeze (SQZ) Period must be used to allow sufficient time for the electrodes to close and apply the required weld force to the parts before the Weld Period begins. Weld current begins when the Squeeze Period ends and both levels of a two-level Foot Switch are closed.

When Up/Downslope is used with any type of Air Actuated Weld Head, the Hold Period can be used to automatically keep the electrodes closed on the parts after weld current has terminated for the purpose of providing additional heat sinking or parts cooling. Squeeze and Hold Periods have no meaning with Manually Actuated Weld Heads and do not appear on either the weld schedule Program or Run screens.

Up/Downslope - Weld Graph Run Screen (Figure 6-14)

Weld schedule 005 is pre-programmed at the factory for Up/Downslope operation. The HF2 Weld Control automatically recognizes the presence of a Manually or Air Actuated Weld Head before the first weld is made.

Figure 14. Up/Downslope

Weld Graph Screen

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CHAPTER 6: ADVANCED WELD FUNCTIONS

Up/Downslope - Alphanumeric Run Screen (Figure 6-15)

To simultaneously view all pre-programmed time periods and energy settings, press [CHNG] to select the Alphanumeric Run screen. The 7 digit Weld Counter is displayed in the upper right corner.

Figure 15. Up/Downslope

BRAZE (Figure 6-16)

This function is ideal for brazing two parts together using a brazing alloy as a "sandwich" between the parts. The brazing alloy can be preformed for convenient handling or can be a tin or solder plating on both parts. To ensure complete solidification of the brazing alloy, use the Hold Period to cool the parts.

Alphanumeric Run Screen

CAUTION - It is easy to exceed the duty cycle rating for the HF2 Weld Transformer using the Braze weld function. Refer to Chapter 2, HF2

Weld Transformer Electrical Specifications.

Braze can be used with Unitek Peco Force Fired Manual or Air Actuated Weld Heads. For Manually Actuated Weld Heads, weld current begins when the Force Firing Switch closes. For Force Fired Air Actuated Weld Heads, weld current begins when both levels of a two-level Foot Switch are closed and the Force Firing Switch in the Air Actuated Weld Head closes.

When Braze is used with a Non-Force Fired Air Actuated Weld Head, the Squeeze (SQZ) Period must be used to allow sufficient time for the electrodes to close and apply the required weld force to the parts before the Weld Period begins. Weld current begins when the Squeeze Period ends and both levels of a two-level Foot Switch are closed.

When Braze is used with any type of Air Actuated Weld Head, the Hold Period can be used to automatically keep the electrodes closed on the parts after weld current has terminated for the purpose of providing additional heat sinking or parts cooling. Squeeze and Hold Periods have no meaning with Manually Actuated Weld Heads and do not appear on either the weld schedule Program or Run screens.

Figure 16. Braze

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Braze - Weld Graph Run Screen (Figure 6-17)

Weld schedule 006 is pre-programmed at the factory for Braze operation. The HF2 Weld Control automatically recognizes the presence of a Manually or Air Actuated Weld Head before the first weld is made.

Braze - Alphanumeric Run Screen (Figure 6-18)

To simultaneously view all pre-programmed time periods and energy settings, press [CHNG] to select the Alphanumeric Run screen. The 7 digit Weld Counter is displayed in the upper right corner.

Figure 6-17. Braze - Weld Graph

Run Screen

Figure 6-18. Braze - Alphanumeric

Run Screen

ROLLSPOT (Figure 6-19)

Rollspot is a special form of seam welding. Typically, upper and lower wheel electrodes, in conjunction with an automatic parts feeder, are used to make a Rollspot weld. Because of the weld current shunting effect after the first weld, set the Weld2 Period weld current greater than Weld1 by a factor of 20% to 50%. Use the larger percentage for closer spacing. Assuming the rotational speed of the wheel is fixed, the Weld2 Period controls the length of the spot and the Cool Period controls the distance between spots.

CAUTION: It is easy to exceed the duty cycle rating for the HF2 Weld Transformer using the Rollspot weld function. Refer to Chapter 2, HF2 Weld Transformer Electrical Specifications.

Rollspot can be used with Unitek Peco Force Fired Manual or Air Actuated Weld Heads. For Manually Actuated Weld Heads, weld current begins when the Force Firing Switch closes. For Force Fired Air Actuated Weld Heads, weld current begins when both levels of a two-level Foot Switch are closed and the Force Firing Switch in the Air Actuated Weld Head closes.

Figure 6-19. Rollspot.

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CHAPTER 6: ADVANCED WELD FUNCTIONS

When Rollspot is used with a Non-Force Fired Air Actuated Weld Head, the Squeeze (SQZ) Period must be used to allow sufficient time for the electrodes to close and apply the required weld force to the parts before the Weld Period begins. Weld current begins when the Squeeze Period ends and both levels of a two-level Foot Switch are closed.

Rollspot welding continues for as long as all switches remain closed. Hold has no meaning with Manually Actuated Weld Heads and does not appear on either the weld schedule Program or Run screens.

Rollspot - Weld Graph Run Screen (Figure 6-20)

Weld schedule 007 is pre-programmed at the factory for Rollspot operation. The HF2 Weld Control automatically recognizes the presence of a Manually or Air Actuated Weld Head before the first weld is made.

Figure 6-20. Rollspot -

Weld Graph Run Screen

Rollspot - Alphanumeric Run Screen (Figure 6-21)

To simultaneously view all pre-programmed time periods and energy settings, press [CHNG] to select the Alphanumeric Run screen. The 7 digit Weld Counter is displayed in the upper right corner.

SEAM (Figure 6-22)

Seam can be used to make automated hermetic seam welds using automatic feeders, and PLC or host computer control. Seam can also be used to make manual or semi-automatic non-hermetic seam welds using an operator. CAUTION: It is easy to exceed the duty cycle rating for the HF2 Weld Transformer using the Rollspot weld function. Refer to Chapter 2, HF2

Weld Transformer Electrical Specifications.

Figure 6-21. Rollspot -

Weld Graph Run Screen

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Figure 6-22. Seam

CHAPTER 6: ADVANCED WELD FUNCTIONS

Seam can be used with Unitek Peco Force Fired Manual or Air Actuated Weld Heads. For Manually Actuated Weld Heads, weld current begins when the Force Firing Switch closes. For Force Fired Air Actuated Weld Heads, weld current begins when both levels of a two-level Foot Switch are closed and the Force Firing Switch in the Air Actuated Weld Head closes.

When Seam is used with a Non-Force Fired Air Actuated Weld Head, the Squeeze (SQZ) Period must be used to allow sufficient time for the electrodes to close and apply the required weld force to the parts before the Weld Period begins. Weld current begins when the Squeeze Period ends and both levels of a two-level Foot Switch are closed. Weld Current flows as long as all switches remain closed. Hold Period has no meaning with Manually Actuated Weld Heads and does not appear on either the weld schedule Program or Run screens.

Seam - Weld Graph Run Screen (Figure 6-23)

Weld schedule 008 is pre-programmed at the factory for Seam operation. The HF2 Weld Control automatically recognizes the presence of a Manually or Air Actuated Weld Head before the first weld is made.

Seam - Alphanumeric Run Screen (Figure 6-24)

To simultaneously view all pre-programmed time periods and energy settings, press [CHNG] to select the Alphanumeric Run screen. The 7 digit Weld Counter is displayed in the upper right corner.

Figure 6-23. Seam

Weld Graph Run Screen

Figure 6-24. Seam

Alphanumeric Run Screen

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CHAPTER 6: ADVANCED WELD FUNCTIONS

DUAL PULSE (Figure 6-25)

Dual Pulse combines the best features of Up/Downslope with Quench/Temper. Use Dual Pulse for best welding control of flat-to-flat, roundto-round, or round-to-flat small parts that may or may not be plated.

Adding Up Slope to the front of each weld period allows a reduction in electrode force, resulting in a cleaner appearance by reducing electrode indentation, material pickup and electrode deformation. Up Slope will also help to displace plating and/or oxides, reduce flashing and spitting, or reduce thermal shock when welding parts containing glass-to-metal seals.

In the normal application of Dual Pulse, the Weld1 Period provides sufficient heat to displace the plating or oxides, seat the electrodes against the base metals, and force the parts into intimate contact. The Cool Period allows time to dissipate the heat generated during the Weld1 Period.

Figure 6-25. Dual Pulse

The Weld2 Period completes the structural weld. The Weld2 Period weld current should be greater than the Weld1 Period weld current by a factor of 2 or 3 since the first bond significantly reduces the resistance of the interface between the parts. The only use for the Down Slope Period following the Weld2 Period is to control grain refinement in brittle parts by slowing reducing the Weld2 Period weld current to zero during the Down Slope Period.

Dual Pulse can be used with Unitek Peco Force Fired Manual or Air Actuated Weld Heads. For Manually Actuated Weld Heads, weld current begins when the Force Firing Switch closes. For Force Fired Air Actuated Weld Heads, weld current begins when both levels of a two-level Foot Switch are closed and the Force Firing Switch in the Air Actuated Weld Head closes.

When Dual Pulse is used with a Non-Force Fired Air Actuated Weld Head, the Squeeze (SQZ) Period must be used to allow sufficient time for the electrodes to close and apply the required weld force to the parts before the Weld Period begins. Weld current begins when the Squeeze Period ends and both levels of a two-level Foot Switch are closed.

When Dual Pulse is used with any type of Air Actuated Weld Head, the Hold Period can be used to automatically keep the electrodes closed on the parts after weld current has terminated for the purpose of providing additional heat sinking or parts cooling. Squeeze and Hold Periods have no meaning with Manually Actuated Weld Heads and do not appear on either the weld schedule Program or Run screens.

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CHAPTER 6: ADVANCED WELD FUNCTIONS

Dual Pulse - Weld Graph Run Screen (Figure 6-26)

Weld schedule 009 is pre-programmed at the factory for Dual Pulse operation. The HF2 Weld Control automatically recognizes the presence of a Manually or Air Actuated Weld Head before the first weld is made.

Dual Pulse - Alphanumeric Run Screen (Figure 6-27)

To simultaneously view all pre-programmed time periods and energy settings, press [CHNG] to select the Alphanumeric Run screen. The 7 digit Weld Counter is displayed in the upper right corner. Note: when programming the Dual Pulse weld function that uses an Air Actuated Weld Head, press [ ] to scroll the program screen to the right to access the Down and Hold periods.

Figure 6-26. Dual Pulse -

Weld Graph Run Screen

Figure 6-27. Dual Pulse -

Alphanumeric Run Screen

PULSATION (Figure 6-28)

Pulsation allows the HF2 Weld Control and largest HF2 Weld Transformer to be used for applications normally requiring more weld energy by pumping in more total weld heat through the use of many sequential weld pulses. The first Weld Period is followed by an alternating sequence of Cool and Weld Periods. The Pulsation number defines how many Cool/Weld Periods will follow the first Weld Period. Using the Pulsation can damage the crystal structure of the parts by making them more brittle.

Figure 6-28. Pulsation

Pulsation can be used with Unitek Peco Force Fired Manual or Air Actuated Weld Heads. For Manually Actuated Weld Heads, weld current begins when the Force Firing Switch closes. For Force Fired Air

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CHAPTER 6: ADVANCED WELD FUNCTIONS

Actuated Weld Heads, weld current begins when both levels of a two-level Foot Switch are closed and the Force Firing Switch in the Air Actuated Weld Head closes.

When Pulsation is used with a Non-Force Fired Air Actuated Weld Head, the Squeeze (SQZ) Period must be used to allow sufficient time for the electrodes to close and apply the required weld force to the

parts before the Weld Period begins. Weld current begins when the Squeeze Period ends and both levels of a two-level Foot Switch are closed.

When Pulsation is used with any type of Air Actuated Weld Head, the Hold Period can be used to automatically keep the electrodes closed on the parts after weld current has terminated for the purpose of providing additional heat sinking or parts cooling. Squeeze and Hold Periods have no meaning with Manually Actuated Weld Heads and do not appear on either the weld schedule Program or Run screens.

Pulsation - Weld Graph Run Screen (Figure 6-29)

Weld schedule 010 is pre-programmed at the factory for Pulsation operation. The HF2 Weld Control automatically recognizes the presence of a Manually or Air Actuated Weld Head before the first weld is made.

Pulsation - Alphanumeric Run Screen (Figure 6-30)

To simultaneously view all pre-programmed time periods and energy settings, press [CHNG] to select the Alphanumeric Run screen. The 7 digit Weld Counter is displayed in the upper right corner.

Figure 6-29. Pulsation

Weld Graph Run Screen

Figure 6-30. Pulsation

Alphanumeric Run Screen

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Unitek HF2/230, HF2/380, HF2/460, HF2/208, HF2S/230 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual