background image

6-2 Using as a negative  ( - ) output as the stabilized 

power supply

 : 

11  S e t  t h e  L E D s  a s  s h o w n in  t h e  F i g u r e  9 .  { M a k e  s u r e  t h a t  t h e 

O U T P U T  L E D  i s  n o t lit.) 

2 )  T u r n  t h e  R o t a r y  E n c o d e r  t o  s e t  a n  a r b i t r a r y  v o l t a g e  v a l u e . 

3 )  P r e s s  t h e A  K E Y ©  a n d  m a k e  s u r e  t h a t  t h e A  L E D  l i g h t s  u p . 

4 )  T u r n  t h e  R o t a r y  E n c o d e r  t o  s e t  a n  a r b i t r a r y  c u r r e n t  l i m i t 

v a l u e . 

5 )  P r e s s  t h e  O U T P U T  K E Y ©  t o  o b t a i n  t h e  o u t p u t  v a l u e  e n -

t e r e d  f r o m  t h e  n e g a t i v e  ( + )  o u t p u t  t e r m i n a l . 

*  F o l l o w  t h e  s a m e  s e t t i n g  p r o c e d u r e  w h e n  t h e -  6 V  K E Y  i s 

s e l e c t e d in  t h e  P W R 1 8 - 1 . 8 Q . 

T h e  o u t p u t  i s  o b t a i n e d  f r o m  t h e -  6 V  o u t p u t  t e r m i n a l . 

If  t h e  O U T P U T  K E Y @  i s  p r e s s e d  ( O N ) ,  b o t h  p o s i t i v e  a n d 

n e g a t i v e  o u t p u t  t e r m i n a l s  s u p p l y a  v o l t a g e  a n d a  c u r r e n t . 

If  t h e  l o a d  s h o r t - c i r c u i t s , or if  t h e  s e t  c u r r e n t  l i m i t  v a l u e 

is  r e a c h e d ,  t h e  c i r c u i t  b e c o m e s  o v e r l o a d e d  a n d  t h e  o u t -

p u t  v o l t a g e  d r o p s .  T h e  u n i t  m a y  b e  u s e d a  c o n s t a n t -

c u r r e n t  p o w e r  s o u r c e in  t h i s  o v e r l o a d e d  c o n d i t i o n . 

N o t e  t h a t  t h e  c u r r e n t  l i m i t e r  m a y  s o m e t i m e s  d e v i a t e 

s e v e r a l  d i g i t s  f r o m  t h e  s p e c i f i e d  c u r r e n t limit  v a l u e . If  t h e 

c u r r e n t  l i m i t e r  i s  u s e d  w i t h i n  t h e  s m a l l e r  r a n g e  o f  e r r o r , 

c o n n e c t  e a c h  o u t p u t  p i n  t o  t h e  g r o u n d  l e v e l  a n d  p l a c e 

t h e  s y s t e m in  t h e  o v e r l o a d  s t a t u s ,  a n d  t h e n  u s e  t h i s 

p r o d u c t s  a f t e r  s e t t i n g a  d e s i r e d  c u r r e n t  l i m i t e r  v a l u e . 

22 

F i g .

 9 

Содержание PWR 18-1.8Q

Страница 1: ...REGULATED DC POWER SUPPLY PWR18 1T PWR18 1 8Q INSTRUCTION MANUAL Part of Power Supply Function KENWOOD CORPORATION PRINTED IN I AN B63 0030 00 T 91 12 1110 9 8 7 0 5 4 3 2 1 90 12 1110 9 8 KENWOOD ...

Страница 2: ...quipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the eq...

Страница 3: ...o w e r supply units are the first in their class with built in microcomputers making their multi functional capabilities s e c o n d to none in the market Their dual tracking function is helping the series a c h i e v e the highest of reliability Moreover their multi output is earning t h e m a several fold lead over conventional single output p o w e r supply units making the P W R series m o s ...

Страница 4: ...he desired output voltage and current v a l u e s c a n be s p e c i f i e d precisely in 1 0 m V a n d 1 0 m A unit K e y lock f u n c t i o n F o r c e s all the v a l u e s previously s e t to be f i x e d T h i s prevents the current values from being altered by s o m e o n e else w h i l e the user is o u t Protect f u n c t i o n P r e v e n t s u n e x p e c t e d voltage and current f r o ...

Страница 5: ...ed voltage O U T P U T C U R R E N T Output current 0 to 1 8 A 0 to 1 8 A 0 to 2 A 0 to 1 A 0 to 1 A 0 to 1 A 0 to 5 A Setting resolution 1 0 m A M a x output current 1 8 A 1 8 A 2 O A 1 0 A 1 A 1 A 5 OA Dual tracking 0 to 1 8 A 0 to A T r a c k i n g deviation 2 4 0 m A of rated current 2 4 0 m A of rated current C O N S T A N T V O L T A G E C H A R A C T E R I S T I C S Input fluctuation for su...

Страница 6: ...0 0 1 0 m A T y p i c a l 1 0 m A T y p i c a l 2 0 m A T y p i c a l Ripple noise r m s 1 0 H z to 1 M H z 2 m A r m s T y p i c a l 2 m A r m s T y p i c a l 5 m A r m s T y p i c a l Ripple peak p p 5 6 m A p p T y p i c a l 5 6 m A p p Typical 1 0 m A p p T y p i c a l T e m p e r a t u r e coefficient 3 0 0 p p m C T y p i c a l V O L T M E T E R Display 3 1 2 digit L E D m a x 1 9 9 9 V fixe...

Страница 7: ...lights up w h e n O N M e m o r y S e v e r a l voltage and current p r e s e t s c a n be s t o r e d Red L E D lights w h e n O N K e y L o c k L o c k s all f u n c t i o n s a s s e t All controls e x c e p t P O W E R are disabled R e d L E D Delay O N O F F D E L A Y of 1 8 V and 8 V 6 V output G r e e n L E D lights up w h e n O N O N O F F D E L A Y of 1 8 V and 6 V output G r e e n L E D ...

Страница 8: ...3 W approx 2 1 O V A 1 7 6 W INPUT V O L T A G E V o l t a g e F r e q u e n c y A C 1 0 0 V 1 0 1 2 0 V 2 2 0 V 2 4 0 V 1 0 m a x 2 5 0 V 5 0 6 0 H z Internal s w i t c h i n g possible D I M E N S I O N S A N D W E I G H T D i m e n s i o n s w i d t h 1 3 8 m m height 1 4 7 m m depth 3 7 2 m m M a x d i m e n s i o n s w i d t h 1 4 3 m m height 1 6 7 m m depth 3 9 2 m m W e i g h t approx 8 2 ...

Страница 9: ... e positive a n d negative t e r m i n a l s or the positive a n d negative terminals w i t h e a c h other If a short is m a d e u s e the m a c h i n e after setting the output voltage to rather a l o w level If it is high the internal circuits m a y be d a m a g e d Keep it in m i n d T h i s is a floating t y p e p o w e r s u p p l y For normal u s e the provided shorting bar to c o n n e c t...

Страница 10: ... i l e the m a c h i n e is in this s t a t e all control s w i t c h e s will be non functional If the s y s t e m is turned off while the data 0000 is displayed on the display panel the content of the backup m e m o r y m a y be d e s t r o y e d It m a y c a u s e a n error K e e p it in m i n d If the s y s t e m is turned off due to operational errors or s o m e other unavoidable errors for e...

Страница 11: ...lay resolution However the output does not fluctuate If a r e v e r s e voltage is generated 0 0 0 V is displayed a n d the display f l a s h e s Ammeter T h i s indicates the output current value and the setting v a l u e of the positive and negative output current Rotary Encoder voltage current delay set knob T h i s is rotary e n c o d e r t y p e knob for setting the positive negative v o l t ...

Страница 12: ...e A L E D lights w h e n this k e y is p r e s s e d and the current limit v a l u e t h a t is indi c a t e d on the voltmeter c a n be varied of s e t by the rotary e n c o d e r W h e n this k e y is p r e s s e d a g a i n the A L E D g o e s off and the current limit value cannot be varied by the rotary encoder D E L A Y Key D E L A Y L E D Green P r e s s this k e y to light the D E L A Y L ...

Страница 13: ...I N G L E D Red T h i s k e y s e t s the output the positive and negative voltage and current v a l u e s to the s a m e value in the tracking m o d e T h e L E D lights to indicate that this m o d e is s e t W h e n this k e y is p r e s s e d the setting v a l u e s of the positive and negative output voltage and current limit are s e t to the s a m e absolute v a l u e a n d the T R A C K I N ...

Страница 14: ... c o d e r to s e t the v a l u e s for the output voltage and electrical current limits If a n output overload o c c u r s at c o n s t a n t current operation the 6 V L E D will begin flashing V A R I A B L E K e y V A R I A B L E L E D Green Orange T h i s k e y is p r e s s e d to c h a n g e the output setting W h e n the key is pressed the L E D lights up to indicate that the machine is in a...

Страница 15: ... d be fore the k e y w a s p r e s s e d the first time If the V A R I A B L E key is p r e s s e d w h i l e the M E M O R Y L E D is lit the V A R I A B L E L E D lights up for about 3 s e c o n d s the A D D R E S S NO used in the R E M O T E mode is displayed on the voltmeter and a m m e t e r d i s p l a y s For details s e e S e c t i o n s 6 of this m a n u a l O p e r a t i o n P r o c e d...

Страница 16: ...PWR18 1 8Q P W R 1 8 1 T Fig 5 16 ...

Страница 17: ...o 0 and lights up orange for a n y m a c h i n e a d d r e s s other t h a n 0 R E M O T E m o d e P r e s s this k e y to c h a n g e the m a c h i n e f r o m the R E M O T E m o d e to t h e L O C A L m o d e If this k e y is p r e s s e d w h e n t h e m a c h i n e is the R E M O T E m o d e the L E D g o e s off and the m a c h i n e s w i t c h e s to the L O C A L m o d e R e m e m b e r t...

Страница 18: ...nt is input by this c o n n e c t o r A l w a y s u s e t h e a c c e s s o r y p o w e r cord for c o n n e c t i o n to this terminal Heat Sink T h i s is a radiator for the t r a n s i s t o r s B e careful not to t o u c h it a s it c a n be e x t r e m e l y hot from dissipating the heat from the c o m p o n e n t s 32 Remote Connector T h e c o n n e c t o r u s e d for input or output of re...

Страница 19: ...the unit is p o w e r e d for the first time after p u r c h a s e or after it h a s not been u s e d for a long period of time 1 1 8 V L E D Lights up 2 V L E D Lights up 3 O U T P U T L E D T u r n off 4 V A R I A B L E L E D Lights up Green 5 O U T P U T P R O T E C T L E D Lights up 6 T h e initial settings of the voltmeter the a m m e t e r and the P R E S E T K E Y s 1 2 3 a r e Display sett...

Страница 20: ... e m T h e s e t v a l u e in c r e a s e s if the knob is turned c l o c k w i s e T h e s e t v a l u e d e c r e a s e s if the knob is turned c o u n t e r c l o c k w i s e W h e n adjusting settings using the R o t a r y E n c o d e r the a m o u n t by w h i c h the target parameter c h a n g e s per incre m e n t of rotation will v a r y depending on h o w quickly the knob is rotated 1 W h...

Страница 21: ...replaced w i t h a n e w one Call the local s e r v i c e representative if this o c c u r s 6 1 Using as a positive J stabilized power supply 11 S e t the L E D s a s s h o w n in the Figure 8 M a k e s u r e that the O U T P U T L E D is not lit 2 T u r n the R o t a r y E n c o d e r to s e t an arbitrary voltage v a l u e 3 P r e s s the A K E Y a n d m a k e s u r e that the A L E D lights up...

Страница 22: ...Q T h e output is obtained f r o m the 6 V output terminal If the O U T P U T K E Y is p r e s s e d O N both positive and negative output terminals supply a voltage and a current If the load short circuits or if the s e t current limit v a l u e is r e a c h e d the circuit b e c o m e s overloaded and the out put voltage drops T h e unit m a y be u s e d a c o n s t a n t current p o w e r s o u...

Страница 23: ... n is Figure 1 0 Be sure that the O U T P U T L E D is n o t f i t Figure 1 0 indicates the c a s e w h e r e positive voltage level is u s e d 2 T u r n the Rotary Encoder to s e t an arbitrary positive voltage v a l u e 3 P r e s s the A K E Y a n d m a k e s u r e that the A L E D lights up 41 T u r n the R o t a r y E n c o d e r to s e t a n arbitrary positive current v a l u e 51 Sf the 1 8 ...

Страница 24: ... t he voltage and current for n e w voltage and current v a l u e s 6 4 PRESET feature 11 T h e P R E S E T feature is used to store the a c t u a l l y value setting displayed value in one of the P R E S E T 1 2 3 K E Y s 1 S e t the L E D s a s indicated in Figure 1 1 A l w a y s m a k e s u r e t h a t the O U T P U T L E D is not lit 2 S e t a positive voltage v a l u e by the R o t a r y E n ...

Страница 25: ...D T h e D E L A Y Function T h i s function enables y o u to s e t intervals b e t w e e n the O N or O F F t i m e s of digital line a n d analog line output In the c a s e of m i x e d digital analog circuits turning the out puts O N and O F F s i m u l t a n e o u s l y could c a u s e s u d d e n d a m a g e to the c o n n e c t e d load T h e D E L A Y f u n c t i o n is designed to prevent t...

Страница 26: ...ip will be the e x a c t r e v e r s e of that for positive D E L A Y t i m e s O U T P U T L E D will be flashing during the s e t delay time t If O U T P U T K e y is pressed during the delay time oper ation i e while O U T P U T L E D is f l a s h i n g both digital a n d a nalog line output will be turned O F F no matter w h a t O N O F F condition t h e y h a p p e n to be in T h e delay time...

Страница 27: ... e g If one of the P R E S E T K E Y s is p r e s s e d by m i s t a k e w h i l e the Unit is u s e d in the V A R I A B L E s t a t u s the setting v a l u e stored in the p r e s s e d P R E S E T K E Y is output w h i c h m a y e r a s e the loaded d a t a accidentally T h e O U T P U T P R O T E C T feature is useful to prevent this t y p e of a c c i d e n t T h i s feature protects the load...

Страница 28: ...e is started up Other w i s e the v a l u e of the incorrectly s e l e c t e d output setting k e y will be output 2 F o l l o w the b e l o w procedure to m a k e s u r e that the O U T P U T P R O T E C T feature is s e t O F F 1 P r e s s the O U T P U T K E Y a s s h o w n in Figure 1 1 to turn off its L E D 2 P r e s s the O U T P U T K E Y to turn O N the output 3 Nothing c a n be changed at...

Страница 29: ... is t u r n e d off w i t h the K E Y L O C K m o d e a c t i v e the K E Y L O C K m o d e will be still effective after p o w e r is supplied to the product n e x t t i m e T h a t i s e v e r y k e y operation will be disabled in this c a s e K e e p it in mind If n e w k e y operations need to be performed s e t the K E Y L O C K s w i t c h to the O F F mode 6 8 Rotary Encoder lock procedures...

Страница 30: ...ut 1 P W R 1 8 1 8 Q Serial Output Application U s a g e for serial output NOTE Do not attempt to connect two positive outputs 18 V and 8 V or two negative outputs 6 V and 1 8 V 31 U s a q e for c o m p l i m e n t a r y output ...

Страница 31: ...o c o n n e c t the G N D line either to the C O M 2 or 6 V terminal 31 2 P W R 1 8 1 T Serial Output Application U s a g e for c o m p l i m e n t a r y output U s a g e for homopolar double output U s a g e for serial output ...

Страница 32: ... on the top and sides of the unit and lift the c a s e u p w a r d s Fig 17 8 2 Changing the Power Voltage T o c h a n g e the rated input voltage c h a n g e the rated v a l u e s of the p o w e r t r a n s f o r m e r a n d f u s e inside the unit a s described in the following s e c t i o n Fig 18 32 ...

Страница 33: ...n d s to the n e w p o w e r voltage s e e the table Be s u r e to d i s c o n n e c t the p o w e r cord f r o m the A C out let before replacing the p o w e r voltage or the f u s e T a b l e R a t e d f u s e s Model 1 0 0 V V 2 2 0 V 2 4 0 V P W R 1 8 1 T 2 5 A T L 2 5 A T L 1 5 A 1 5A P W R 1 8 1 8 Q 3 A T L 3 A T L 1 5A TL 1 6 A I T L T L T i m e lag f u s e Fig 2 0 33 Fig 19 ...

Страница 34: ...voltage nor the output current d e c r e a s e s T h e p o w e r transistor is broken or the control circuit is m a l f u n c tioning U n s t a b l e output 11 Is there a n y c h a n g e in the p o w er v o l t a g e 2 C a n a n y oscillation be o b s e r v e d 3 Is a n y strong m a g n e t i c or elec tric field present near the unit 1 T h e p o w e r voltage e x c e e d s the limits of a rated i...

Страница 35: ...10 EXTERNAL DIMENSIONS FIGURE Dimentions of the P W R 1 8 I T are identical Fig 21 Fig 22 35 ...

Страница 36: ...36 Fig 23 Fig 2 4 Dimentions of the P W R 1 8 1 T are identical ...

Страница 37: ...A product of KENWOOD CORPORATION 17 5 2 chome Shibuya Shibuya ku Tokyo 150 J a ...

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