24 Volt LVC (Low Voltage Control) M A G N E T I CM O T O R C O N T R O LS Y S T E M S

i

INTRODUCTION The single and three phase Rockwell definite purpose Low Voltage C o n t r o l ( L V C ) m o t o r s t a r t e r s h a v e b e e n d e s i g n e de x c l u s i v e l yf o r u s e o n t h e R o c k w e l l s t a t i o n a r yp o w e r t o o l s . T h e b a s i c f u n c t i o n o f a R o c k w e l l d e f i n i t e p u r p o s e s t a r t e ri s t o p r o v i d e ON-OFF motor control. In addition to providingON-OFF control, e v e r y R o c k w e l l m o t o r s t a r t e ro f f e r s t h e f o l l o w i n g f e a t u r e s :

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s u l t i n g f r o m a s u s t a i n e dm o t o r o v e r l o a d , e x t e n d e d

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or, |..*ur,ing of a power tool tollowing a temporary p o w e r f a i l u r e . U p o n a l o s so f v o l t a g e o r a r e d u c t i o n

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a u t o m a t i c a l l y r e s t a r t ,b u t m u s t b e m a n u a l l y r e s t a r t e d b y p u s h i n gt h e s t a r t b u t t o n o f t h e O N - O F F s w i t c h .

t Rockwell

L o w V o l t a g eC o n t r o l ( L V C ) - T h e R o c k w e l l d e f i n i t e

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p u r p o s em o t o r s t a r t e r sp r o v i d el o w . v o l t a g.el l : t : l j j

i n s t r u c t i o n sf o r w i r i n g t h e s t a r t e r st o t h e p o w e r s o u r c e ,a n d i n s t r u c t i o n s f o r c h a n g i n gt h e v o l t a g eo f a n L V C m o t o r s t a r t e r .

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TABLEOF CONTENTS i on lntroduct SafetyRules

2

I n d e xf o r W i r i n ga n d S c h e m a t i cD i a g r a m s

3

Single Phase LVC Magnetic Motor Starter the l n s t r u c t i o n sf o r c o n n e c t i n gt h e S i n g l e P h a s e M o t o rS t a r t e rt o

PowerSupply

o I

Three Phase LVC Magnetic Motor Starter

to the lnstructionsfor connectingthe ThreePhaseMotorStarter PowerSupply from Special Three Phase Magnetic Motor Starter for operation

575 Volt ThreePhasePowerSYstems

10

Special Single Phase LVC RegenerationMotor Starter

11

Motor lnstructionsfor connectingSinglePhaseRegeneration Starterto the PowerSuPPIY

13

LVC MagneticMotorStartersfor 9" x 16" BandSaws

14

LVC MagneticMotorStartersf or 18" x 6" Planers

16 18

ChangingVoltage of LVC Motor Starters

SAFETYRULES I n s t a l l i n ga n d s e r v i c i n gs h o u l da l w a y sb e a c c o m p l i s h e d 1. b y q u a l i if e de l e c t r i c apl e r s o n n e l . R e a dt h e i n s t r u c t i o nm a n u a bl e f o r ew i r i n ga n d o p e r a t i n g 2. t h i s m o t o r s t a r t e r .F a i l u r et o f o l l o w i n s t r u c t i o n sc a n c a u s e i nj u r y . Always disconnectthe electricalpower beforeremoving 3. the coverof the starter. 4. Operatethe motor starteronly with the cover of the starterin place. Do not operatethe machineunlessthe motor starteris 5. properlygroundedas specifiedin the instructions. F o l l o w n a t i o n a la n d l o c a l e l e c t r i c acl o d e sw h e n w i r i n g 6. the motor starter. 7. Always use proper heater coils as specified in the heater coil chart locatedon the insideof the startercover. Make sure the motor starter is disconnectedfrom the 8. electrical power source before the primary connectionsof the control transformerarechanged. The LVC Motor Starter has been designedand en9. gineeredfor useonly on RockwellStationaryPowerTools. 1 0 . O c c a s i o n a l l iyn s p e c tt h e s t a r t e r t o e n s u r et h a t i t i s securelm y o u n t e d c, l e a na n dd r y .

2

I N D E X F O R W I R I N G A N D S C H E M A T I CD I A G R A M S PRODUCT BAND SAWS 9" x 16" Band Saws 14" BandSaws 20" Band Saws

PAGE NUMBER

STNGLE PHAsE 14

I

rxnee PHAsE 15

6

o

CIRCULARSAWS 10" Unisaw 12" - 14" CircularSaw CUT-OFF MACHINE 12" Cut-Off Machine DRILL PRESSES 15" Drill Presses 17" Drill Presses S e r i e s2 0 0 0 D r i l l i n g M a c h i n e s R a mT y p e R a d i a l D r i l l P r e s s e s

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8 8 I

DUSTCOLLECTOR High Efficiency Dust Collector F I N I S H I N GM A C H I N E S 6 " A b r a s i v eB e l t F i n i s h i n gM a c h i n e 1 2 " A b r a s i v eD i s c F i n i s h i n gM a c h i n e 6" Belt and 12" Disc Finishing Machine

8 8 8

GRINDER T o o l m a k e rG r i n d e r JOINTERS 4tt Jointer 6" Jointer 8" Jointer

5 5

I 8

PLANERS 13" x 6" Planer lgtt x 6" Planer U ni p l a n e

5 16 5

17 8

RADIAL SAWS 12" RadialSaw 14" RadialSaw 16" RadialSaw 18" RadialSaw

12 12 12 12

e 8 8

WOODLATHES l2" StandardDuty Wood Lathe 12" Heavy Duty Wood Lathe W O O DS H A P E R Heavy Duty WoodShaPer

a

8

S I N G L E P H A S E L V C M A G N E T I CM O T O R S T A R T E R F i g . 1 , i l l u s t r a t e st h e s t a n d a r ds i n g l ep h a s eL V C m a g n e t i c motor starter,RockwellPart No. 438-01'316-0072. : ) overload T h e s t a r t e ri s m a d eu p o f f o u r b a s i cc o m p o n e n t s 1 4 ) start/stop a n d b l o c k ,2 ) m a g n e t i c o n t a c t o r3, ) t r a n s f o r m e r , 1. Neither F i g . i n s h o w n i s n o t s t a t i o n s t a r t / s t o p s t a t i o n .T h e a r e t h e i n p u t c o n n e c t i o n fsr o m t h e s t a r t / s t o ps t a t i o n .i n p u t c o n n e c t i o nfso r s i n g l ep h a s ee l e c t r i c apl o w e r ,o r t h e l e a d sf r o m t h e p o w e rt o o l m o t o r . c i a g r a mo f t h e s i n g l ep h a s e A w i r i n g d i a g r a ma n d s c h e m a t i d c o t o r s t a r t e ri s s h o w ni n F i g .2 . LVC magnetim T h e w i r i n g d i a g r a mi n d i c a t e tsh e r e l a t i v ep h y s i c al o c a t i o no f , i r e , a n d t e r m i n a l ;w h e r e a st,h e s c h e m a t i c e a c h c o m p o n e n tw of the comd i a g r a md o e s n o t s h o w t h e p h y s i c arl e l a t i o n s h i p i n a s t r a i g h tl i n e s h o w d o e s d i a g r a m ponentsT . he schematic f o r m t h e c i r c u i tf u n c t i o n so f t h e v a r i o u sc o m p o n e n t s .

M AGN E T ICC ON T A C T OR 438-01 -O16-0142

o f a p o w e r c i r c u i ta n d a T h e s i n g l ep h a s es t a r t e ri s c o m p r i s e d c o n t r o lc i r c u i t . T h e p o w e rc i r c u i tc a r r i e st h e m o t o r l o a dc u r r e n ta n d i s s h o w n w i t h h e a v vl i n e si n t h e w i r i n ga n d s c h e m a t idci a g r a mtso r e p r e s e n th e a v yg a g ew i r e s i z e df o r t h e m o t o r c u r r e n t .I n t h e m o t o r s t a r t e rt,h e p o w e rc i r c u i ti s w i r e dw i t h b l a c kw i r e s .

T h e m a i n f u n c t i o n o f t h e c o n t r o lc i r c u i t i s t o s t a r t a n d s t o p the electric motor by meansof the start/stoppushbuttons. T h e d i a g r a m isn F i g . 2 i l l u s t r a t etsh e c o n t r o lc i r c u i tw i t h l i g h t . hP l i n e st o r e p r e s e nlti g h tg a g ew i r e s i z e df o r c o n t r o lc u r r e n t T r ith fuse, c o n t r o l c i r c u i t c o n s i s t so f t h e c o n t r o lt r a n s f o r m ew start/stoppush buttons, start button interlock contact,magnetic contactorcoil, and overloadswitch.The control circuit i s w i r e dw i t h r e dw i r e si n t h e m o t o r s t a r t e r .

TRANSFORMER 438-01-O19-OO12

O VE R L OA D BL OC K

12252

START/STOP STATION TERMINALS

GROUND STRI

LE PHA SE POW ER INPUT TERMINALS M O T O RT E R M I N A L S

SINGLEPHASEMOTORSTARTER FIG.I - STANDARD No. 52-540 ROCKWELL 4

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T H E S I N G L EP H A S EMOTORSTARTER I N S T R U C T I O N SF O RC O N N E C T I N G T O T H E P O W E RS U P P L Y I n g e n e r a ls. t a t i o n a r yt o o l s o r d e r e dw i t h a s i n g l ep h a s em o t o r 1-112 horsepoweror lessare shippedfrom the factory with a c o r ds e ta n d p l u g .N o f i e l dw i r i n gi s n e c e s s a r y .

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S t a t i o n a r yt o o l s o r d e r e dw i t h a s i n g l ep h a s em o t o r g r e a t e r r u s t b e w i r e d i n t h e f i e l d .T h e s i n g l e t h a n 1 - 1 1 2h o r s e p o w em p h a s eL V C m o t o r s t a r t e rs h o u l db e w i r e da sf o l l o w s : R e f e rt o F i g . 3 a n d r e m o v ea n d d i s c a r dt h e p l a s t i cp l u gc o v e r i n g t h e e n t r a n c eh o l e i n t h e b o t t o m o f t h e s t a r t e re n c l o s u r e . B r i n g t h e i n p u t p o w e r c o r d t h r o u g ht h e e n t r a n c eh o l e .C o n n e c t t h e b l a c k p o w e r l e a dt o t e r m i n a l L 1 , t h e w h i t e p o w e r l e a dt o t e r m i n a lL 2 , a n dt h e g r e e ng r o u n dl e a dt o t h e g r o u n d s t r i oi n t h e l o w e rl e f t h a n dc o r n e ro f t h e s t a r t e r .

BRINGPOWER L E A DT H R O U G H ENTRANCE H O L EI N BOTTOM OF STARTER ENCLOSURE

G R O U ND STRIP

C O N N E C TP O W E RL E A D ST O T E R M I N A L S L 1 L 2 A N D G R E E NL E A DT O T H E G R O U N DS T R I P Fie.3

S e v e r ap l o i n t s m u s t b e s t r e s s e da n d c l o s e l yf o l l o w e dw h e n c o n n e c t i ntgh e i n p u t p o w e rt o t h e m o t o r s t a r t e r . 1. T o p r e s e r v teh e d u s t - t i g h ti n t e g r i t yo f t h e m o t o r s t a r t e r , a n o i l - t i g h t b o x c o n n e c t o rs h o u l db e u s e df o r f a s t e n i n g t h e i n p u t c a b l et o t h e s t a r t e re n c l o s u raet t h e e n t r a n c eh o l e .

SCREWSON TOPOF THE T E R M I N A LB L O C KA R E USED TO CLAMP THE W I R E SI N T H E B L O C K

w i r e sa r eu s e df o r t h e i n p u t l e a d st,h e 2. l f c o p p e rs t r a n d e d w i r e sm u s t b e s o l d e r e dd i p p e do r t i n n e db e f o r et h e y a r e c o n n e c t e dt o t e r m i n a l sL 1 a n d L 2 a n dt h e g r o u n ds t r i p . T h e w i r e s m u s t b e c o n n e c t e dt o t e r m i n a l sL 1 a n d L 2 3. t h r o u g ht h e f r o n t f a c eo f t h e t e r m i n a lb l o c k a s s h o w ni n F i g . 4 . T h e s c r e w so n t h e t o p o f t h e t e r m i n a lb l o c ka r eu s e df o r c l a m p i n g l lock. t h e w i r e si n t h e t e r m i n a b T h e g r o u n d s t r i p h a sp r o v i s i o nfso r t h r e eg r o u n dl e a d s . 4. The input power, start/stop station, and motor must be g r o u n d e dv i a t h e g r o u n d s t r i p . T w o g r o u n d w i r e s m u s t n e v e rb e i n s e r t e di n t h e g r o u n ds t r i p u n d e ro n e s c r e w . l f m e t a l c o n d u i t i s u s e d i n p l a c eo f c a b l e ,t h e g r e e n 5" g r o u n d w i r e f r o m t h e s i n g l ep h a s ei n p u t p o w e r s y s t e mi s omitted.

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TERMINALSLI - L2 CONNECTIONS l'9

6

T H R E E P H A S E L V C M A G N E T I CM O T O R S T A R T E R F i g . 5 i l l u s t r a t e st h e s t a n d a r dt h r e e p h a s e L V C m o t o r s t a r t e r , R o c k w e l l P a r t N o . 4 3 8 - 0 1- 3 16 - 0 0 7 3 .

T h e w i r i n g d i a g r a m i n d i c a t e st h e r e l a t i v e p h y s i c a l l o c a t i o n o f e a c h c o m p o n e n t , w i r e , a n d t e r m i n a l ; w h e r e a s ,t h e s c h e m a t i c d i a g r a m d o e s n o t s h o w t h e p h y s i c a l r e l a t i o n s h i po f t h e c o m p o n e n t s . T h e s c h e m a t i cd i a g r a m d o e s s h o w i n s t r a i g h t l i n e f o r m t h e c i r c u i t f u n c t i o n s o f t h e v a r i o u sc o m p o n e n t s .

The three phase starter consistsof four basic components: ( 1) o v e r l o a d b l o c k w i t h h e a t e r s , ( 2 ) m a g n e t i c c o n t a c t o r , (3) transformer, (41 start/stop station. The start/stopstation is not shown in Fig. 5. Neither are the input connections f r o m t h e s t a r t / s t o ps t a t i o n a n d t h e i n p u t c o n n e c t i o n sf r o m t h e t h r e e p h a s em o t o r o r p o w e r s u p p l y .

T h e t h r e e p h a s e L V C m o t o r s t a r t e r i s c o m p r i s e do f a p o w e r c i r c u i t a n d a c o n t r o l c i r c u i t . T h e d i a g r a m si n F i g . 6 i l l u s t r a t e s t h e p o w e r c i r c u i t w i t h h e a v y l i n e s t o r e p r e s e n th e a v y g a g e w i r e s i z e d f o r t h e m o t o r c u r r e n t ; w h e r e a s ,t h e c o n t r o l c i r c u i t i s s h o w n w i t h l i g h t l i n e s i n t h e d i a g r a m st o r e p r e s e n tl i g h t g a g e w i r e s i z e d f o r c o n t r o l c u r r e n t . I n t h e m o t o r s t a r t e r .t h e p o w e r circuit is wired with black wires and the control circuit is wired with red wires.

A w i r i n g d i a g r a m a n d s c h e m a t i cd i a g r a m o f t h e t h r e e p h a s e L V C m a g n e t i cm o t o r s t a r t e r i s s h o w n i n F i g . 6 .

M A G N E T I CC O N T A C T O R

T R A N SF O RM E R 438-01-O19-0O12

4 3 8 - 0 1- O 1 6 - O 1 4 3

OVE RLOAD BLOCK 1225235

START/STOP STATION T E RM I N A L S

G R O U ND STRIP

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M O T O RT E R M I N A L S

T H R E EP H A S EP O W E R I N P U TT E RM I N A L S

FIG.5 - STANDARDTHREEPHASEMOTORSTARTER ROCKWELL NO.52-541 7

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