Unitek UNIBOND 2, Руководство пользователя

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DESCRIPTION
1.01. F E AT U R E S - The Model UB2, Unibond I I Power Supply, S t o c k No. 1 - 1 9 1 - 0 1 , i s
s p e c i f i c a l l y designed f o r use w i t h e i t h e r t h e U n i t e k Model 4 0 , 4 6 , 8 6 , 8 7 , 1 2 7 o r 147
P a r a l l e l -Gap Weld Heads. T h e s e systems a r e used t o : t e r m i n a t e
f i n e w i r e , on mi,144.417,
components; bond ribbons t o microwave deVices; j o i n f l a t p a c k l e a d s t o p r i n t e d c i r c u i t
boards; o r bond f i n e w i r e o r r i b b o n t o t h i n f i l m o r t h i c k f i l m s u b s t r a t e s .
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IjNrrEic.
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M U M . W M . *
U N I B O N O , . i I
• 0 1 6 1 . 6 1 . 6 1 )
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Figure 1 - Unibond I I w i t h O u t p u t Tr a n s f o r m e r a n d o p t i o n a l M e t e r A c c e s s o r y.
1.02. T h e Unibond i s a d u a l mode C o n s t a n t Power/Constant Vo l t a g e Power S u p p l y.
The o u t p u t PULSE AMPLITUDE a n d DURATION a r e s e l e c t e d u s i n g t h e c o n v e n i e n t d i g i t a l
thumbwheel s w i t c h e s l o c a t e d o n t h e f r o n t p a n e l . T h e U n i b o n d ' s e x c l u s i v e s o l i d s t a t e
design u s e s a c a p a c i t o r b a n k a s a
l o w impedance c u r r e n t s o u r c e r a t h e r t h a n b u l k y and
expensive t o m a i n t a i n b a t t e r i e s . I n t h e VOLTAGE FEEDBACK Mode, t h e o u t p u t v o l t a g e i s
r e g u l a t e d s o t h a t t h e p r e s e t PULSE AMPLITUDE i s c o n t i n u o u s l y m a i n t a i n e d
a t t h e , remote
sensing p o i n t w h i c h i s u s u a l l y a t t h e e l e c t r o d e s . I n t h e VOLTAGE + CURRENT Feedhack_
Mode, t h e PULSE AMPLITUDE i s i n c r e a s e d o r reduced b y a maximum f a c t o r o f t w o . i n an
e f f o r t t o m a i n t v o l t a g e ,
t h e c u r r e n t - v o l t a g e p r o d u c t d e f i n e d b y t h e PULSE AMPLIIUDE _and WELD
RESISTANCE S e l e c t o r s . F o r a more d e t a i l e d e x p l a n a t i o n . s e e t h e T h e o r y o f O p e r a t i o n .
Paragraphs 2 . 1 0 and 2 . 11 . T h e VOLTAGE + CURRENT Feedback Mode d r a m a t i c a l l y improves
the c o n s i s t e n c y o f t h e w e l d i n g r e s u l t s i n t h o s e a p p l i c a t i o n s where t h e p h y s i c a l p a r a -
meters o f t h e p a r t s v a r y a n d / o r t h e p l a s t i c zones o f t h e m a t e r i a l s a r e n a r r o w w i t h
respect t o t e m p e r a t u r e . i . e . c o p p e r.
1.03 A n OPTIONAL Model UBM, M e t e r Accessory, S t o c k No. 1 0 - 2 6 6 - 0 1 , a l l o w s t h e user
to determine t h e r e s i s t a n c e o f t h e welding l o a d , which includes t h e electrodes and
the weldments. T h i s Meter i s r e q u i r e d i f t h e user intends t o c o r r e c t l y use t h e
Unibond I I i n t h e VOLTAGE + CURRENT Feedback Mode. T h e Meter i s o n l y used t o d e t e r -
mine o r confirm t h e weld schedule f o r a given a p p l i c a t i o n . S i n c e no p a r t i c u l a r p u r -
pose i s served b y l e a v i n g t h e meter permanently connected t o t h e Unibond I I , i t i s
suggested t h a t one o r two meters be purchased f o r each production l i n e .
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