Miyachi Unitek UNIFLOW 2 User manual

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OPERATOR MANUAL 990-228
Revision D September 2007
UNIFLOW®2
PULSED THERMODE CONTROL
(BIPOLAR LOGIC)
MODEL NUMBERS
1-292-01 1-292-01-01 1-292-01-02

UNIFLOW®2 PULSED THERMODE CONTROL
ii 990-228
Copyright © 2003 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 19896 12/03 Original Release.
B 19957 2/04 Added Communication Appendix D,
Communication and Appendix E, Guide to
Reflow Soldering.
C 20174 11/04 Updated technical information.
D 21578 9/07 Added checksum to communications.

UNIFLOW®2 PULSED THERMODE CONTROL
990-228 iii
CONTENTS
Page
Revision Record ......................................................................................................................................... ii
Contents .............................................................................................................................................. iii
Contact Us .............................................................................................................................................. vi
Safety Precautions .................................................................................................................................... vii
Chapter 1. Description
Section I: Features .................................................................................................................................. 1-1
Overview .......................................................................................................................................... 1-1
Control Models ................................................................................................................................ 1-2
Heads, Thermodes and Accessories ................................................................................................. 1-2
Section II: Controls and Indicators ........................................................................................................ 1-3
Front Panel ....................................................................................................................................... 1-3
Display (LCD) ................................................................................................................................ 1-3
Keypad ............................................................................................................................................ 1-4
Cursor Keys ..................................................................................................................................... 1-4
Graph Key ........................................................................................................................................ 1-4
DATA Key ....................................................................................................................................... 1-5
PROFILE NUMBER
Keys ...................................................................................................... 1-5
COUNTERS Key ............................................................................................................................. 1-5
DATA EDIT Keys ........................................................................................................................... 1-6
HEATING RATE Key .................................................................................................................... 1-6
SETUP Key ..................................................................................................................................... 1-6
HEAT/NO HEAT Switch ................................................................................................................ 1-7
Chapter 2. Installation and Setup
Section I: Planning for Installation ........................................................................................................ 2-1
Space Requirements ......................................................................................................................... 2-1
Utilities ............................................................................................................................................ 2-1
Section II: Connections To External Equipment ................................................................................... 2-2
Overview .......................................................................................................................................... 2-2
Input Power Connections ................................................................................................................. 2-3
Control-to-Head Connections .......................................................................................................... 2-3
Section III: Equipment Setup ................................................................................................................. 2-5
Force Fired, Mechanically Actuated Head ...................................................................................... 2-5
Force Fired, Air Actuated Head ....................................................................................................... 2-6

UNIFLOW®2 PULSED THERMODE CONTROL
iv 990-228
Contents (Continued)
Page
Chapter 3. Using Programming Functions
Overview ............................................................................................................................................ 3-1
Front Panel Display ................................................................................................................................. 3-1
Run Mode ........................................................................................................................................ 3-1
Setup Mode ...................................................................................................................................... 3-2
Graph Key ............................................................................................................................................ 3-2
Preheat ............................................................................................................................................ 3-2
Rise ............................................................................................................................................ 3-2
Reflow ............................................................................................................................................ 3-3
Cool ............................................................................................................................................ 3-3
Profile Number ................................................................................................................................ 3-3
Present Temperature ........................................................................................................................ 3-3
DATA Key ............................................................................................................................................ 3-3
PROFILE NUMBER Keys .............................................................................................................. 3-4
COUNTERS Key .................................................................................................................................... 3-4
Total Usage Counter ........................................................................................................................ 3-4
Good Reflow Counter ...................................................................................................................... 3-4
Clean Counter .................................................................................................................................. 3-4
Replace Counter ............................................................................................................................... 3-5
DATA EDIT Keys .................................................................................................................................. 3-5
Saving Changed Values .......................................................................................................................... 3-5
HEATING RATE Key ............................................................................................................................ 3-6
SETUP Key ............................................................................................................................................ 3-7
HARDWARE SETUP, Page 1 ............................................................................................................... 3-8
HEAD COOL VALVE IS, Page 1 .......................................................................................................... 3-8
SOLDER COOL VALVE IS, Page 1 ..................................................................................................... 3-8
FOOTSWITCH RESPONSE MODE, Page 1 ........................................................................................ 3-8
LIST OF HARDWARE, Page 1 .............................................................................................................. 3-9
HARDWARE SETUP, Page 2 ............................................................................................................... 3-9
DISPLAY CONTRAST, Page 2 ............................................................................................................. 3-9
BUZZER LOUDNESS, Page 2 .............................................................................................................. 3-9
END OF CYCLE BUZZER, Page 2 ....................................................................................................... 3-9
SET OUTPUT RELAYS, Page 2 .......................................................................................................... 3-10
COMMUNICATIONS ......................................................................................................................... 3-11
BAUD RATE ................................................................................................................................. 3-11
I.D. NUMBER ............................................................................................................................... 3-11
REFLOW TEMPERATURE SETUP, Page 2 ...................................................................................... 3-13
SET SAFETY TIMER .......................................................................................................................... 3-14
SET RELEASE TIMER ....................................................................................................................... 3-14
MAX. TEMPERATURE LIMIT .......................................................................................................... 3-14
MAX IDLE TEMP LIMIT ................................................................................................................... 3-14
SYSTEM SECURITY .......................................................................................................................... 3-15
COPY PROFILE ................................................................................................................................... 3-15

UNIFLOW®2 PULSED THERMODE CONTROL
990-228 v
Page
Chapter 4. Operating Instructions
Section I: Introduction ........................................................................................................................... 4-1
Preparation ....................................................................................................................................... 4-1
General Operator Safety .................................................................................................................. 4-1
Section II: Operating Instructions .......................................................................................................... 4-2
Powering Up .................................................................................................................................... 4-2
Pre-Defined Profiles ........................................................................................................................ 4-2
Direct Input ...................................................................................................................................... 4-3
Chapter 5. Maintenance
Section I. Before You Start
Precautions ....................................................................................................................................... 5-1
STATUS Messages .......................................................................................................................... 5-1
Section II. Troubleshooting ................................................................................................................... 5-2
Section III. Maintenance ........................................................................................................................ 5-5
Thermode Maintenance ................................................................................................................... 5-5
Repair Service .................................................................................................................................. 5-5
Chapter 6. Calibration
Overview .......................................................................................................................................... 6-1
Required Equipment ........................................................................................................................ 6-1
Calibration ....................................................................................................................................... 6-1
Appendix A. Technical Specifications ............................................................................................... A-1
Appendix B. Electrical And Data Connectors ..................................................................................B-1
Appendix C. System Timing ...............................................................................................................C-1
Appendix D. Communications ........................................................................................................... D-1
Appendix E. Guide to Reflow Soldering ........................................................................................... D-1
Index .............................................................................................................................. Index-1

UNIFLOW®2 PULSED THERMODE CONTROL
vi 990-228
CONTACT US
Thank you for purchasing a Unitek Miyachi®Uniflow®2 Pulsed Thermode
Control. Upon receipt, please inspect it thoroughly for shipping damage before
you install it. If there is any damage, contact the shipping company immediately
to file a claim, and notify Unitek Miyachi at:
Unitek Miyachi
1820 South Myrtle Avenue
P.O. Box 5033
Monrovia, CA 91017-7133
Telephone: [phone]
FAX: [phone]
e-mail: [email protected]
The contents of this manual are subject to change without notice. If you have
any questions, or find any errors or omissions in this manual, please contact us.
Unitek Miyachi is not responsible for any losses due to improper use of this
product.

UNIFLOW®2 PULSED THERMODE CONTROL
990-228 vii
SAFETY PRECAUTIONS
General
This instruction manual describes the operation and maintenance of the Control and
provides instructions relating to its safe use. Procedures described in this manual must be
performed as detailed by Qualified and Trained personnel.
For Safety, and to effectively take advantage of the full capabilities of the Control, please
read this instruction thoroughly before attempting to use it.
After reading this manual, retain it for future reference when any questions arise
regarding the proper and safe operation of the Control.
Operation
Procedures other than those described in this manual or not performed as prescribed in
this manual, may expose personnel to electrical shock or DEATH.
When operating any Reflow unit, always wear appropriate personal protective gear.
Maintenance/Service
Before performing any maintenance on the Control unit, read Chapter 5, Maintenance
thoroughly. Use the appropriate tools for terminating the connecting cables, being
careful not to nick the wire conductors.
Do not modify the Control without prior written approval from Unitek Miyachi.
HIGH VOLTAGE is used in the operation of this equipment.
DEATH ON CONTACT may result if personnel fail to observe the
safety precautions labeled on the equipment and noted in this manual.
WHEN REFLOWING always wear safety glasses.

UNIFLOW®2 PULSED THERMODE CONTROL
viii 990-228
Before using this equipment, read the
SAFETY PRECAUTIONS carefully to
understand the correct usage of the
equipment.
xThese precautions are given for safe use
of the equipment and for prevention of
injury to operators or others.
xBe sure to read each of the instructions,
as they are all important for safe
operation.
xThe meanings of the words and symbols
are as follows:
DANGER
DO NOT TOUCH THE INSIDE OF THE CONTROL UNNECESSARILY.
High Voltages are present inside the Control Cabinet. Do not touch the inside of the Control
unnecessarily with the power turned ON. You may receive an electric shock. When
inspecting the inside of the Power Supply, be sure to turn the power source OFF.
NEVER DISASSEMBLE, REPAIR, OR MODIFY THE CONTROL.
These actions can cause electric shock and fire. Do not do anything other than the
maintenance described in the Operator Manual.

UNIFLOW®2 PULSED THERMODE CONTROL
990-228 ix
WARNING
Do NOT put your hands or fingers on the Thermode.
When soldering, keep your hands and fingers away from the thermode.
Do NOT touch any soldered part or Thermode during, or just after reflow soldering.
The soldered parts and the Thermode are very hot. If you touch them you may be burned.
Ground the equipment.
If the equipment is not grounded, you may get an electric shock.
Use a ground fault breaker.
Use a ground fault breaker to prevent an electric shock.
Only use specified cables.
A cable with insufficient capacity or loose connections can cause electric shock or fire.
Do NOT use a damaged power cable, connecting cables, or plugs.
Do not step on, twist, or tense any cable. The power cable and connecting cables may be
damaged which can cause electric shock, short circuit, or fire. If any part needs to be
repaired or replaced, consult Unitek Miyachi or your distributor.
Stop operation if any trouble occurs.
If you detect a burning smell, abnormal sounds, abnormal heat, smoke, etc., turn power
OFF immediately to prevent fire or electric shock. Contact Unitek Miyachi or your distributor
for help.
People with pacemakers MUST stay away from the Control.
When the Control is operating, it generates a magnetic field, which adversely affects
pacemakers. People who use a pacemaker must not approach the Control, or walk around
the soldering shop while the Control is operating, unless their medical doctor has deemed it
safe to do so.
Wear protective gear.
Put on protective gear such as protective gloves, long sleeved jacket, and leather apron to
avoid being burned.

UNIFLOW®2 PULSED THERMODE CONTROL
x 990-228
CAUTION
Apply the specified source voltage.
Applying the wrong voltage can cause fire and electrical shock.
Keep water and water containers away from the Control.
Water spilled on the Control can cause a short circuit, electrical shock, or fire.
Use proper tools (wire strippers, pressure wire connectors, etc.) for terminations of the
connecting cables.
Do not nick the wire conductor. Doing so can cause a short circuit, electric shock, or fire.
Install the Control on a firm, level surface.
Injury may result if the Control falls over or drops from an uneven surface.
Keep combustible matter away from the Control.
Spatter can ignite combustible materials. If you cannot remove all combustible materials,
cover them with a non-combustible material.
Do NOT cover the Control with a blanket, cloth, etc.
Heat generated by the operating Control may ignite a blanket or cover.
Keep a fire extinguisher nearby.
Make sure there is a fire extinguisher in or near the shop in case of fire.
Regularly inspect and maintain the Control.
Regular inspection and maintenance is essential to safe operation and long life of the
equipment. If you see any damage, make necessary repairs before operation.

UNIFLOW®2 PULSED THERMODE CONTROL
990-228 1-1
CHAPTER 1
DESCRIPTION
Section I: Features
Overview
For the rest of this manual, the Uniflow®2 Pulsed Thermode

Control will simply be referred to as
the Control. This manual describes the most common or “typical” components and options. If you
have questions about custom items in your Control that are not covered in this manual, contact Unitek
Miyachi using the phone, e-mail, or mailing information in the Foreword of this manual.
The Control is a power supply designed for
reflow soldering or heat sealing electronic
interconnections using a precisely controlled
temperature profile.
The design of the Control is directed toward
compactness, reliability, safety and simplicity,
and ease of repair.
The operator is coached by visual displays on a
Liquid Crystal Display (LCD) screen if out-of-
range entries are made, or when alarm/error
conditions occur.
Up to 15 heat profiles (the records containing
the joining parameters to be used during the
j
oining cycles) can be programmed, stored, and
recalled for use.
Reflow soldering is a multi-step metal joining process where:
xTwo solder-coated parts are brought into intimate contact, using a preset force.
xThe temperature of the two parts is raised to a preheat temperature for a preset time to activate the
pre-applied flux. The flux removes the surface oxides from the solder-plated parts.
xThe temperature is then raised to the reflow temperature for a pre-set time to melt the solder
between the parts.
xCooling is then initiated to allow the solder to solidify.
xUpon reaching the pre-set cool temperature, the reflow head can be retracted, removing force from
the parts.

CHAPTER 1: DESCRIPTION
UNIFLOW®2 PULSED THERMODE CONTROL
1-2 990-228
Control Models
The standard model of the Control has a front panel with controls and a display for operator control of
the Control.
Model/Part # Type of Operation AC Input
Voltage
Output Heating
Capability
1-292-01 Front panel. Has front panel controls and display for
local operator programming. 24 VAC valve outputs
120 2 KVA
For thermodes up to
2.3” (60 mm) long
1-292-01-01 Front panel. Has front panel controls and display for
local operator programming. 24 VAC valve outputs
240 4 KVA
For thermodes up to
4” (100 mm) long
1-292-01-02 Front panel. Has front panel controls and display for
local operator programming. 24 VDC valve outputs
240 4 KVA
For thermodes up to
4” (100 mm) long
Heads, Thermodes and Accessories
For details of solder reflow and heat seal heads, thermodes and accessories available from Unitek
Miyachi, see Technical Manual 990-230, Applying Process Control to Pulse Heated Reflow Soldering,
or contact Unitek Miyachi using the phone, e-mail, or mailing information in the Foreword of this
manual.

CHAPTER 1: DESCRIPTION
UNIFLOW®2 PULSED THERMODE CONTROL
990-228 1-3
Section II: Controls and Indicators
Front Panel
Display (LCD)
The LCD on the front panel displays both graphic and alphanumeric data depending on the function
chosen by the Operator.
< SETUP MENU >
1. HARDWARE SETUP 4. SYSTEM SECURITY
2. COMMUNICATIONS 5. COPY PROFILE
3. REFLOW SETUP
NUMBER Select an item, Graph or Data
Graphic Data Alphanumeric Data
NOTE: These screens, their functions and displays are described in Chapter 3, Using Uniflow 2™
Programming Functions.

CHAPTER 1: DESCRIPTION
UNIFLOW®2 PULSED THERMODE CONTROL
1-4 990-228
Keypad
The keypad allows you to edit the numeric values of the display screens.
Cursor Keys
The cursor keys allow you to move the editing cursor up, down and sideways.
You use the  (Up) and  (Down) keys to select multiple pages in a single
menu or setup screen. You use the  (Left) and  (Right) keys to decrease or
increase a numeric field value.
Graph Key
This key displays the graphic screen for editing the heat profile parameters
with the keypad or cursor keys. After editing the heat profile parameters,
pressing the GRAPH key saves the new parameters to the heat profile noted on
the display. Pressing the GRAPH key while in the setup, counter, or heating
rate menus returns the Control to the graphic display mode.
Pre- 40°C
Heat Rise Reflow Cool 1
150 --- 350 180 Celsius
01.0 1.0 03.0 --- Seconds

CHAPTER 1: DESCRIPTION
UNIFLOW®2 PULSED THERMODE CONTROL
990-228 1-5
DATA Key
The DATA key brings up the data screen to the display.
The data screen reports the most recent heat
cycle parameters in numerical format: time,
temperature, duty cycle, and counter status
(when enabled). You may initiate the HEAT
cycle while the DATA screen (rather than the
graphic screen) is displayed.
TEMPERATURE: Thermode = 40
q
C
Peak= 354
q
CFinal=351
q
C Average = 349
q
C
TIME: (Seconds) Preheat =01.0 Rise = 01.0
Heat= 03.0 Cool= 05.5 Total= 009.5
PROFILE: 2 RATE=Medium
System Ready
Reflows before cleaning = +000250
Reflows before replacement = +000500
PROFILE NUMBER  Keys
With the graphics screen on the display, these keys will increment/decrement
the heat profile number on the graphics screen. With the data screen on the
display, pressing either PROFILE NUMBER key returns the graphics screen to
the display; the keys will then increment/decrement the profile number on the
screen. The PROFILE NUMBER up/down keys are disabled when any screen
other than the graphic screen or data screen is on the display.
The number of possible heat profiles than can be stored ranges from 1 to 15.
COUNTERS Key
This key brings up the REFLOW COUNTERS screen.
This screen provides a menu of selections for
setting the thermode cleaning and thermode
replacement counters, and choosing responses to
the counter settings.
< REFLOW COUNTERS>
1. TOTAL USAGE COUNTER : 0000020
2. GOOD REFLOW COUNTER : 0000010
3. CLEAN COUNTER : +999999
4. REPLACE COUNTER : +999999
NUMBER Select an item, Graph or Data

CHAPTER 1: DESCRIPTION
UNIFLOW®2 PULSED THERMODE CONTROL
1-6 990-228
DATA EDIT Keys
The data edit keys allow you to edit the time and temperature
parameters of the heat profile on the graphic display. The
PREHEAT, RISE, REFLOW and COOL keys are vertically
aligned with the profile heating states as displayed on the
graphic screen.
These keys are only active when the graphic screen is
displayed.
HEATING RATE Key
The HEATING RATE key brings up the MANUAL TUNING screen. This screen
screen allows you to go to the SET COARSE HEATING RATE and SET FINE
HEATING RATE heating rate capability to match the heat generating capability of
the thermode to minimize the temperature overshoot and undershoot. See
Chapter 3, Using Programming Functions for details.
<MANUAL TUNING >
1. Set Coarse Heating Rate : MEDIUM
2. Set Fine Heating Rate : 98%
NUMBER Select an item, Graph or Data
<SET COARSE HEATING RATE >
1. Very Slow
2. Slow
3. Medium
4. Fast
NUMBER Select , Page, Graph or Data
SETUP Key
This key brings up the SETUP MENU screen.
The SETUP MENU screen provides a menu of
operating characteristics for the Control.
< SETUP MENU >
1. HARDWARE SETUP 4. SYSTEM SECURITY
2. COMMUNICATIONS 5. COPY PROFILE
3. REFLOW SETUP
NUMBER Select an item, Graph or Data

CHAPTER 1: DESCRIPTION
UNIFLOW®2 PULSED THERMODE CONTROL
990-228 1-7
HEAT / NO HEAT Switch
When this switch is in the HEAT position, the programmed profile can initiate
heating energy.
When you set the switch to the NO HEAT position, no heating current can flow.
This function is required to adjust a new thermode to the work pieces prior to
initiating a heating cycle.

UNIFLOW®2 PULSED THERMODE CONTROL
990-228 2-1
CHAPTER 2
INSTALLATION AND SETUP
Section I: Planning for Installation
Space Requirements
Dimensions (including all projections from the housing, but excluding cabling):
Height: 12.5 inches (317 millimeters)
Width: 10 inches (254 millimeters)
Depth: 20.75 inches (527 millimeters)
Weight:
4 KVA models: 58 pounds (26.3 kilograms)
2 KVA models: 46 pounds (20.86 kilograms)
xInstall the Control in a well-ventilated area that is free from excessive dust, acids, corrosive
gases, salt and moisture.
xAllow sufficient clearance around both sides and back of the Control for power and signal
cabling runs, and to ensure adequate inflow and exhaust of air for the cooling system.
xAllow ample workspace around the Control so that it will not be jostled or struck while in use.
xThe work surface must be level, stable, free from vibration, and capable of supporting the
combined weight of the total joining system.
xThere are no sources of high-frequency energy close by.
Utilities
Input power requirements for the Control are as listed below.
Control
Model
Input Voltage, 50 or 60 Hz,
Single phase (Vrms)
Circuit Breaker Rating
(Amps)
1-292-01 120
1-292-01-01 & 1-292-01-02 240
15