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WARNING: This equipment may generate or use radio frequency energy. Changes or modifications to this equipment cause harmful interference unless the modifications are expressly approved in the instruction manual. The user could lose the authority to operate this equipment if an unauthorized change or modification is made.
CONTENTS 1. OUTLINE 1 . Outline The P W R series C V / C C power supply units are the first in their 2. Features class with built-in microcomputers, making their multi- 3. Specifications functional capabilities second to none in the market. Their dual 4 .
2. FEATURES supplies are turned off, the current values are saved to the Dual tracking function mode: Enables output voltage and . back-up memory. There is no need for the user to enter data current (negative and positive) to be changed at the same each time w h e n the s y s t e m is turned on.
3. SPECIFICATIONS PWR18-2 - OUTPUT V O L T A G E 0 to + 1 8 V / - 1 8 V 0 to + 3 6 V / - 3 6 V Output voltage Setting resolution 10 m V...
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PWR18-2 PWR36-1 2.8 m V p-p Ripple peak (p-p) 5 0 fis typical Transient response 1 0 0 p p m / ° C typical Temperature coefficient C O N S T A N T C U R R E N T C H A R A C T E R I S T I C S 2 m A typical Input fluctuation (for surge of A C ±...
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PWR18-2 PWR36-1 F U N C T I O N S ON/OFF s w i t c h . However, output cannot be ON w h e n M E M O R Y ON. Output O N / O F F Red L E D lights up w h e n ON.
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PWR18-2 PWR36-1 O P E R A T I O N C O N D I T I O N S 0 to 4 0 ° C , 1 0 - 8 5 % RH Rated temperature/humidity range 0 to 4 0 ° C , 1 0 - 8 5 % RH Operation temperature/humidity range - 2 0 to 6 5 °...
4. PRECAUTIONS FOR USE negative terminals with each other. If a short is made, use Keep in mind the following w h e n reading this manual: the machine after setting the output voltage to rather a low T h e manual covers both t h e P W R 1 8 - 2 and P W R 3 6 - I level.
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In the case of normal switch-on w h e n the backup condenser (Display data of the after power is supplied) is charging the voltage and currents displayed will all be " 0 " (See Figure 1-a). T h e n , after 5 s e c o n d s , normal operation will begin.
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tracking status is canceled. T h e setting value remains at the warning. same value a s w h e n the tracking is performed and is not The L E D goes off w h e n the + 1 8 V key is pressed again. reset to the original value.
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@ Output Terminal ( - 1 T h i s terminal is used to output negative voltage and cur- rent for the C O M terminal. T h i s terminal is floating from the c a s e . @ COIWS Terminal T h i s is a common terminal w h i c h is used for both positive and negative voltage and current output.
6. OPERATION PROCEDURE The following are the initial settings w h e n the unit is powered Make sure that the power source provides the rated vol- for the first time after purchase (or after it has not been used tage, before connecting the power cord (attached to the for a long period of time.) unit) to the power input connecter w h i c h is installed on...
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' mode) and the Rotary Encoder knob is rotated slow- Note 2 ly, the voltage, current, and delay time settings will Upon turning on the power s w i t c h , if the V A R I A B L E K E Y ® change by the s a m e increments as for the "...
6-1 Using as a positive {+} stabilized power supply 6-2 Using as a negative ( - ) output as the stabilized power supply Fig. 7 Fig. 8 1) S e t the L E D s as s h o w n in the Figure 7. (Make sure that the 1) Set the L E D s as s h o w n in the Figure 8.
6-3 Tracking Power Supply Procedure Note that the current limiter may sometimes deviate several digits from the specified current limit value. If the current limiter is used within the smaller range of error, connect each output pin to the ground level and place the s y s t e m in the overload s t a t u s , and then use this products after setting a desired current limiter value.
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6-5 OUTPUT PROTECT Feature Perform the same procedure to store an arbitrary setting value in each of the other P R E S E T K E Y s . The unit is equipped with the V A R I A B L E K E Y and P R E S E T K E Y s (1,2,3) to change and set an output value.
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(1) Perform the following procedure to make sure the OUT- Make sure not to turn on the O U T P U T K E Y immediately P U T P R O T E C T feature operates correctly. after the O U T P U T P R O T E C T feature is started up.
6-7 Rotary Encoder lock procedures 6-6 KEY LOCK feature If the selected V K E Y (or A K E Y ) is pressed, the corresponding T h i s feature is used to prevent the setting value of each func- L E D goes off.
7. APPLICATIONS Serial Output Usage for homopolar double output Usage for serial output Usage for complimentary output I L + I : 2 A M a x . ( P W R I 8 - 2 ) , M a x . ( P W R 3 6 - l )
8. MAINTENANCE 8-1 Removing the Case .8-2 Changing the. Power Voltage . T o remove the c a s e of the unit, remove the s c r e w s on the top T o change the rated input voltage, change the rated values of and sides of the unit and lift the case upwards.
9. TROUBLE SHOOTING Trouble C h e c k point Cause — T h e power cord is not connect- None of the L E D s light up within 5 ed or is broken. T h e unit cannot be turned on. minutes after the power turned ON.