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Unitek UNIBOND 2, User Manual

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Figure 3 4 - I n t e r n a l v i e w o f M i l l i o h m Meter

R1 ( D R I V E A D J U S T )

R19 (CALIBRATION ADJUST)

R6 ( L I M I T A D J U S T )

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Summary of Contents for UNIBOND 2

Page 1: ...service in house repair center WE BUY USED EQUIPMENT Sell your excess underutilized and idle used equipment We also offer credit for buy backs and trade ins www artisantg com WeBuyEquipment REMOTE IN...

Page 2: ...LINII FIC U N I B O N D 0 0 40 dr too Model UB2 Model UB2 100 Model UB2 230 41 0 611 Stock No 1 191 01 Stock No 1 191 01 01 Stock No 1 191 01 04 Model UBM S t o c k No 10 266 01 Ohl WARNNING Contact w...

Page 3: ...sportation charges prepaid B UNITEK EQUIPMENT makes no warranty concerning components or accessories not manufactured by it such as transistors fuses optics batteries etc However in the event of the f...

Page 4: ...1 8 96 Correctthecalibrationprocedure ERRATA 996 050 Rev A Unibond II User sManual Manual Title 990 050 U n k n o w n A 8 9 6 Manual Part No D a t e R e v Addendum Date REVISION RECORD Unitek Miyachi...

Page 5: ...aragraph 8 02 Last sub paragraph is 8 02 05 SHOULD BE 14 25 to 15 57 volts at side of C24 14 40 to 15 60 volts at side of C23 16 75 to 19 25 volts at side of C27 Add new sub paragraph 8 02 06 Set thep...

Page 6: ...he remote sensing p o i n t which i s u s u a l l y a t t h e electrodes I n the VOLTAGE CURRENT Feedhack_ Mode t h e PULSE AMPLITUDE i s increased o r reduced by a maximum f a c t o r o f two i n an...

Page 7: ...Output Transformer i s 1 7 milliohms looking back i n t o the Output Transformer from the sens ing point usually the electrodes o f the welding head T h e r e f o r e the resistance o f either the Mod...

Page 8: ...ormance o f the system w i l l be reduced as the resistance between the Terminals o f the Output Transformer and the Sensing Point i s increased o r i f the Weld Resistance i s less than 5 milliohms 2...

Page 9: ...r e s i s t a n c e I n t h i s case t h e change i n c o n t a c t r e s i s t a n c e s masks t h e i n c r e a s e i n t h e r e s i s t a n c e o f t h e w o r k p i e c e s caused b y t h e i n...

Page 10: ...o w e s t a t t h e e n d o f t h e c y c l e and i s a l m o s t c o n s t a n t w h i c h means t h a t t h e e n e r g y a n d t e m p e r a t u r e a r e c h a n g i n g a t n e a r l y c o n s t...

Page 11: ...ROTECTION FEATURE I f the welding load draws more than 1000 amps or i f the output transistors are caused t o operate i n an unsafe region as a r e s u l t o f a radical change i n load resistance t h...

Page 12: ...O W E SWITCH SWITCH Figure 8A Unibond I I with with optional Meter Accessory f r o n t view MILLIO HM METER METER SWITCH SENSING CABLE RECEPTACLE 4 1 1 1 1 1 1 1 0 1 6 a l e C A U T I O N 111 11 M 1 e...

Page 13: ...the load connected to the sensing point whenever the Meter Switch i s pressed 2 18 S E N S I N G CABLE Allows the Unibond t o sense the voltage a t the electrodes o f the Welding Head I f the Sensing...

Page 14: ...0 F BL B L Stereo Zoom Scope Unibond Electrode BPTL Base Plate Thin Line 0 00 1 F re 4 0 00 0 tr i I 0 f 0 _ 0_ 2 p e 0 4 0 0 41 00 7 O M A O p t i c Mounting Assembly O M M AOptic Mounting Assembly A...

Page 15: ...u i t Breaker b the Plug on the end o f the Line Cord and c t h e position o f the jumpers on the Con trol Transformer Figure 33 a s indicated below TABLE I Unibond I I Control Transformer Connection...

Page 16: ...om the Weld Head t o the Sensing Cable Connector on the rear o f the Unibond Connect the F i r i n g Switch Cable from the Uni bond t o the F i r i n g Switch Cable from the Weld Head 4 00 E L E C T R...

Page 17: ...djustment Knob t o produce the desired Electrode Gap 4 02 I N S TA L L AT I O N OF UNITIP TM ELECTRODES MODELS 5OUB AND 86 4 02 1 Loosen the Electrode Holder Clamp Screws S e t the Electrode Gap Adjus...

Page 18: ...workpiece surfaces D r e s s both electrode types by following 4 05 2 through 4 05 4 4 05 2 P e r i o d i c resurfacing i s required t o remove oxides and welding debris from parallel gap electrodes...

Page 19: ...ation i s c r i t i c a l and should be kept t o a minimum f o r conductive materials such as copper P u l s e Duration i s also c r i t i c a l when welding resistive materials i n the Voltage Curren...

Page 20: ...m 2 ms cm CURRENT DURATION CURRENT __ 1 It11OLTAGE 1 _ 4 4 Limmi i 1 VOLTAGE CURRENT 5 volts cm 60 amps cm 5 ms cm 1 DURATION CURRENT VOLTAGE 5 120 volts cm amps 1ms cm cm VOLTAGE CURRENT DURATION CUR...

Page 21: ...gh the surface oxides S i n c e the contact area was s t i l l very small t h i s area rapidly heated and deformed reducing the pressure and increasing the contact area T h i s i s i l l u s t r a t e...

Page 22: ...e and Gap so t h a t a satisfactory weld i s made P l a c e the weldments under t h e electrodes A l l measurements must be made using the exact electrode configuration and Electrode Force which would...

Page 23: ...T h e current peaked t o 160 amps during the f i r s t 1 ms o f Figure 19 and 2 0 a In the Constant Voltage Mode the current decreased l i n e a r l y t o 120 amps u n t i l melting occurred I n the...

Page 24: ...5 3 5 ELECTRODEGAP inch 0 1 2 0 1 2 OUTPUTRESISTANCE 2 5 RESISTANCE RANGE X 1 5 17 T h e electrodes rapidly become contaminated by the residues from the adhe sives used on c i r c u i t boards T h e V...

Page 25: ...welding gold plated Kovar i n the Voltage Mode i s excellent T h e settings i n Voltage Current Mode a r e more c r i t i c a l b u t t h e number o f welds which can be made before cleaning the elect...

Page 26: ...10 W h e n adhesives from the c i r c u i t board begin t o form on the electrodes t h e cleaning procedure outlined i n 4 0 5 should be used Adhesives w i l l s t a r t t o accum ulate on the edges...

Page 27: ...xy Glass Epoxy Glass Epoxy Glass TRACEWIDTH i n 015 015 015 015 MATL USED FORREPAIR 003 z 015 inch Gold Plated Kovar 003 z 015 inch Gold Plated over 003 z 015 inch Copper Ribbon 32 gauge Bar Wire F O...

Page 28: ...ed influences and compensate f o r t h e error i n energy by a d justing the duration o f the weld pulse proportionately T h i s w i l l work s a t i s f a c t o r i l y over a narrow range b u t h a...

Page 29: ...e s a f e operating area o f t h e t r a n s i s t o r s PULSEWIDTH THumBwHEEL SWITCHES PULSEWIDTH i T1MER PULSE AMPLITUDE 1T LIMITER TRANSFORMER C O R E P1AS CURRENT PULSE amPLIF ER rv E R OUTPUT ST...

Page 30: ...R122 and R125 T h i s current i s directly related t o the secondary current by the transformer r a t i o and must be s c a l ed by t h a t f a c t o r S i n c e the primary windings are switched fro...

Page 31: ...i s provided a s shown i n Figure 30 so t h a t the feedback voltage Ef h0 i s proportional t o the current i n the 154d resistor Ri t h e r e will be a load resistor value t h a t w i l l pro duce a...

Page 32: ...es from the Weld Head t o the Unibond Remove the cover from the Unibond 8 02 04 Connect a jumper across R103 Connect a jumper across CR33 8 02 05 Switch the power t o ON and check t h a t the followin...

Page 33: ...ove the jumper which was Placed across R103 i n 8 02 04 T u r n power On T h e voltage across R103 should be between 0 19 and 0 20 v o l t s A d j u s t R102 i f necessary CAUTION DO NOT ALLOW THE OUT...

Page 34: ...S e t the Pulse Amplitude t o 0 99 v o l t s and the Pulse Duration t o 79 ms Fire the Unibond A beep should be heard and the Overload Indicator should remain OFF 8 08 03 Now f i r e t h e Unibond and...

Page 35: ...e Meter w i l l display the resistance o f the Weld Head B a d connections can be found by moving the clip leads toward the Electrodes one connection a t a time METER BLACK RED 1 C14Lti WELD HEAD UNIB...

Page 36: ...ot connected SOLUTION 2 The Weld Load exceeds 1000 Amps C h e c k with Milliohmeter SOLUTION 3 The resistance o f the Weld Head i s too high Check with Milliohmmeter PROBLEM Poor welds SOLUTION 1 SOLU...

Page 37: ...ors 7 1 _ 0 i 7 7 1 r 1 71 7 7 1 14 1 12 1 1 7 20 4 1 e 4 4 t 0 7 0 S Eff l i l l 0 06 0 0 r _ 7 4 i t e l o w 0 11 E N 1 4 1 1 f i N e t I N 7 f i l f z _ 7 1 L as is s 1 r s a 4 r r K N 1 Y i 11 0 _...

Page 38: ...POWER SUPPLY PCB ASSEMBLY FRONT PANEL 4 Figure 33A Internal view of Unibond I I Right Side View CONNECTORS Figure 33B Internal View o f Unibond I I L e f t Side View REAR PANEL OUTPUT CABLE CONNECTOR...

Page 39: ...Figure 34 Internal view o f Milliohm Meter R1 DRIVE ADJUST R19 CALIBRATION ADJUST R6 L I M I T ADJUST 1 34...

Page 40: ...PR DATE 5 i l i t 4 DATE APPR R E I L E A S E 2 E C 4 9 I SCALE 0 SIZE C DWGNO 4 307 17 r REV SHEET I OF I Figure 35 Milliohm Meter Printed Circuit Board 2 PLcS 1 P 1 4 430717 0 0 R E V CIRCUITSIDE 3...

Page 41: ......

Page 42: ...BN 6 8 1 5 1 4W 564 1 215 RESISTOR FILM 5 OHM 5 12W 567 2 947 RESISTOR CBN 4 7 OHM 5 1 4W 561 2 123 RESISTOR CBN 3 3 0 OHM 10 1W 565 1 258 RESISTOR FILM 6 0 4 1 1 1 4W 568 2 422 RESISTOR CBN 2 2 0 1 5...

Page 43: ......

Page 44: ...FOR ONIBOND I I 100 V 6 0 6 0 HZ i 0 0 5 1150 2 A t I I 01 M D 2rot i i s y 5 0 6 0 HZ s r C 15 II C2 505 W O t A Y IA O CI 01 I W O 2 At Z O A V 0 0 6 O H L T f cr 1 0 c0 I A 2 5 0 V 5 0 6 0 HZ 1 _ _...

Page 45: ...tTen RU514 b U T TO U t x i 7 2 c f 1 74 WGI 4 4 r i a _ p2 1 ti O t t riSOLL 6 0 1 1 1 N 9 94 1 WI 11 I I 1 IS1 01 moles m o n M I N REf T O 0 1 0 1 0 Svel t 4 I r e 1 3 8 LAIN 01 40 R I R DE51 4 14...

Page 46: ...KHz 1 A 1 i 47 71J5T 1 1 0 0 V a l o r i K I 1 It H 1 1 4 i tlt I s O H ilti di o t E c t 1 1 1 1 I 1 Lv 5 1 4 1 5 I F T 0 0 3 _14 1 c 3 V _j_jt y T 4 AtOUST F O R p R a n s o u r r RT O U T 4 71 5 5...

Page 47: ...ms 1 4 w 1 s norm M I N 011431 Ait W Ofil CRI v CR H S V FIRE r 0 2 _ _ 1 1 1 P 1 1 t r z e t Vr T 644 5 E 04 0040 e I I 0 3 3 7 t 0 i i j _ 28 Li _ i _ 1 _ 10 i l I t 1 f f L t g 0 1 45v M Y V I N 0...

Page 48: ...NMI I N N I I O M N M I M E I N N M I M I M I N I 111111 I M I M...

Page 49: ...service in house repair center WE BUY USED EQUIPMENT Sell your excess underutilized and idle used equipment We also offer credit for buy backs and trade ins www artisantg com WeBuyEquipment REMOTE IN...

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