Kenwood Pr-a series User manual

REGULATEDDCPOWERSUPPLY

PR-ASERIES

PR18-1.2APR18-3APR18-5A

PR36-1.2APR36-3A

PR70-1A

PR250-0.42A

INSTRUCTIONMANUAL

KENWOODCORPORATION

COPRINTEDINJAPANB63-0174-00(N)

36505

KENWOOD

CONTENTS

1.

OUTLINE

• 4

2.

FEATURES

• • • 4

3.

SPECIFICATIONS

5

4.

PRECAUTIONSFORUSE7

5.

EXPLANATIONOFPANELS8

5-1.

FRONT

PANEL

• 9

5-2.

REAR

PANEL

10

6.

OPERATIONPROCEDURES••••

••••

11

6-

1.

STAND-ALONE

OPERATION

• 11

6-2.

OPERATION

IN

SERIES••••

• • 11

6-3.

OPERATION

IN

PARALLEL

•

• •

12

7.

MAINTENANCE

••14

7-

1.

REMOVINGTHE

CASE

14

7-2.

CHANGINGTHESOURCE

VOLTAGE

• 14

7-3.

FUSE

REPLACEMENT

• • 15

8.

TROUBLESHOOTING• • • 16

tate.

This

instruction

manual

is

descrived

forseven

models

(PR18-1.2A,

PR18-3A,

PR18-5A,

PR36-1.2A,

PR36-3A,PR70-1A,

and

PR250-0.42A).

Refer

to

item

applied

to

your

product.

3

1.

OUTLINE

The

PR-A

Series

isa

serial

controltyperegulted

DCpower

supply.

It

is

a

constantvoltage/current

power

supply

whose

output

canbe

varied

from

0 up

to

the

ratedvalues.

11

isa

compact

unit

which,

providedwith

both

voltage

and

current

calibrated

meters,

allows

both

voltage

and

current

tobe

monitored

simultan-

eous

ly.

In

terms

of

operabi

1 i ty,

the

unit enableshigh

precision,

continunes

riabi1ity

viacoarse

and

fine

adjust

knobs.

Weare

confident

that

the

unit's

designconceivedwith

the

user's

convenience

in

mind

to

enable

advantages

such

as

arrangement

in

easy

-to-

use

configurations

and

reliability

will

satisfy

your

needs

very

well.

With

thePR-A

Series,

multiple

units

ofthesamemodelcanbe

connected

in

parallel

to

set

upa

"one-control"master/salveconfigurationhavingincreased

current

output.

2.

FEATURES

OThePR-A

Series

isa

constantvoltage/currentsupply

which

features

extremely

low

voltage

and

load

fluctuations

and

ripple

noise.

OControls

the

output

onand

off

by

using

output

switch.

OThe

unit

featuresseparatevoltage

and

current

meters

so

that

both

voltage

andcurrent

canbe

monitored

simultaneously.

OOutput

voltage

and

current

canbe

adjustedcontinuously

toany

desired

values.

Furthermore,

thevoltage

canbe

preset

easily

and

precisely

usingcoarse

and

fine

adjust

knobs.

OThe

constantcurrent

circuit

operates

to

protectagainstoverload

and

output

shorting.

The

limiting

current

canbe

preset

from

0 uptothe

ratedcurr

and

the

unit

can

also

be

used

asa

constantcurrentsupply.

OThe

units

enables"one-control"operationvia

connect

ion

in

series,

or

via

parallel

connection

ina

master/slaveconfiguration.

OUsing

an

optional

rack-mounting

adapter

(RK-604),

thePR

Series

canbe

installed

ona EIAor

JISrack.

4

3.

SPECIFICATIONS

Item

PR18-1.2A PR18

3A

PR18-5A

PR36-L

2A

PR36-3A PR70-1A PR250-0.42A

Output

voltage

(continuosly

variable,

coarse

and

fine

adusts) 0

to

18V

0

to

36V

0

to

70V

0

to

250V

Output

current(continuoslyvariable)

0

to

1.2A

0

to

3A

0

to

5A

0

to

1.2A

0

to

3A

0

to

1A

0

to

0.42A

Constant

voltage

characteristics

Input

fluctuation(for

surge

of

AC±10%)

0,01%+2mV

(3.8mV)

0.01%+2mV

(5.6mV)

0.01%+2mV

(9mV)

0.015K+M

(27mV)

Load

fluctuation(for

surge

of

0

to

1001)

0.01%±2mV

(3,8mV)

0.015HM

(4

M0

0.01%±2mV

(5.6mV)

0.01%+2mV

(9mV)

0.01JS+M

(27mV)

Ripplenoise,

rms

(10Hz

to1MHz)

[Note.

1]

0.5mV

rms

lmV

rms

2.5mV

rms

Ripple

peak

(peak-to-peak)

[Note.

1]

2mVp-p 6mVp-p

Transient

response(Output

current

5%

to

100%)

100/isTypical

Tenperature

coefficient

150ppm/°C

Typical

Constant

current

characteristics

Input

fluctuation(for

surge

of

AC±10%)

2mA

Load

fluctuation(for

surge

of

0

to

100%)

10mA 10mA 15mA 15mA 15mA 10mA

Ripplenoise,

rms

(10Hz,

to1MHz)

[Note.

1]

2.4mA

rms

6.0mA

rms

10mArms

2.4mA

rms

6.0mA

rms

2.0mA

rms

Ripple

peak

(peak-to-peak)

[Note.

1]

3.6mA

p-p

12mA

p-p

15mA

p-p

4

5mA

p-p

12mA

p-p

6.0mA

p-p

Tenperature

coefficient

500ppm/°C

Typical

1nstrumentation

" 1

Voltmeter

(2.5-level-F.S.)

18V 36V 70V 250V

Ammeter

(2.5-level-F.S.)

1.2A

3A 5A

1.2A

3A 1A

0.42A

Constant-voltage

operation

indicator

Green

CV

LED

goes

on.

Constant-current

operation

indicator

Red

CC

LED

goes

on.

5

Item

PR18-1.2A PR18-3A PR18-5A

PR36-L

2A

PR36-3A PR70-1A

PR250-0.42A

Funct

i

ons

Output

on/offswitching Turn

the

output

onand

off.

Serial

connection(independentcontrol

mode)

Can

be

connected

in

series(withinlimits

of

ground

proofvoltage.)

Parallel

operation(master-slave

mode)

Can

be

operated

in

"one-control"

parallel

configuration

(only

withother

machines

of

same

model.)

Output

Polarity Positive

or

nagative

ground

possible

Output

terminals

(color)

Of)red,

(-)white,

(GND)black

Ground

proofvoltage ±250VDC ±500VDC

Operat

ing

condi

t ions

Operating

Temperature/Humidity

Range

0to

40deg

C,

10

to

80%

O.

Storage

Temperature/Humidity

Range

-20

to

60deg

C,

10

to85%

R.

H.

Cooling

mechanism

Naturalconvection

Power

consumption

VA/W

(forratedload

ofAC100V)

Approx,

60VA/45W

Approx

J25VA/100W

Approx.200VA/165W

Approx.

105VA/73W

Approx.

225VA/170W

Approx.l40VA/110W

Approx.200VA/155W

1nput

voltage

Voltage,

Frequency

AC100V

±

101

50/60Hz.120V/200V/220V/240V±

10%

(max.

AC

250V)

Internal

switchingpossible

Di

mentions

and

weight

Dimentions

(widthxheightxdepth)

104x147x180mm 104x147x215mm 138x147x230mm

104

x

147

x

180mm

138x147x230mm 104x147x215mm 138x147x230mm

Max.

dimentions(widthxheightxdepth)

108X161

x

200mm

108x167x265mm 142x167x290mm

108

x

161

x

200mm

142x167x290mm 108x167x265mm

142

x

167x

290mm

weight

Approx.

3.8kg

Approx.

5.7kg

Approx.

8.1kg

Approx.

4.4kg

Approx.

8.6kg

Approx.

5.8kg

Approx.

7.0kg

Accessory

i

terns

1

Instruction

Manual,

2

Fuses

*

Measured

with

positive

or

negative

grounded.

•

Circuit

and

ratings

subject

to

change

withoutnotice

dueto

developments

in

technology.

6

4.

PRECAUTIONSFORUSE

1)Confirming

the

supplyvoltage

*Use

this

unit

within

the

specified

range.

The

unit's

ratedvoltage

is

single-phase

100/120/200/220/240VAC

±10X(max.

250V)

at

50/60Hz.

*The

ratedvoltage

is

indicated

onthe

specification

andname

platelocated

beside

the

input

connector

onthe

rearpanel.

*See

the

Maintenance

sect

ion(7-2.Changing

the

supp

lyvoltage)

for

information

onhowto

chang

the

ratedvoltage.

2)Precautionsforconnection

of

output

terminals

*This

unit

is

a

floating

type

power

supply.

For

ordinary

use,

be

surethat

the

MASTER/SLAVE

switch

onthe

rear

panel

issettoMASTER,and

that

either

the(+)

output

terminal

orthe(-)

output

terminal

isconnected

to

the

GND

terminal(case

GND)

via

the

shorting

bar.

3)

Output

currentvalue

setting

*Toset

the

constant

currentvalue,

short-circuit

output

terminals

(

+ )

and

(-)and

deliver

theoutput

current.

4)

Set-up

envi

ronment

*Be

sure

touse

this

unit

within

the

specified

ambienttemperaturerange

of

0to

40degC.

••Because

the

unit

iscooled

by

naturalconvection,

donot

placeobjects

on

top,place

the

unit

onor

near

any

heat-emittingdevice,

oruse

multiple

units

inany

stackedconfiguration.Also

usethe

unit

inan

environment

that

is

as

wellcross-ventilated

as

possible.

7

•igure

Figure

2.

8

5,

EXPLANATIONOFPANELS

5-1Frontpanel

©POWER

ON• /OFF•

The

power

switch,

The

power

supplyshould

beonand

operating

when

this

switch

isdepressed.

©OUTPUT

switch

Turns

theoutput

onand

off.

When

theoutputisturnedon,the

OUTPUTLED

goes

on.

©Voltmeter

ADC

voltmeter

that

indicates

theoutput

voltage.

©Ammeter

ADC

ammeter

that

indecates

theoutput

current.

^VOLTAGECOARSE

Coarse

adjust

knob

fortheoutput

voltage.

©VOLTAGE

FINE

Fine

adjust

knob

fortheoutput

voltage.

©CURRENT

Knob

for

setting

the

current

value

inthe

constant

current

mode.

It

can

beused

to

set

the

limiting

value

fortheoutput

current.

©Outputterminal

(

+ )

Terminalfortapping

of

(+)output

voltages.

©Outputterminal

(-)

Terminalfortapping

of(-)

output

voltages.

©GNDterminal

The

ground

terminal,

itisconnected

to

the

main

chassis.

Normally,

this

terminal

isconnected

to

either

the

(

+

)

or(-)

terminal

with

short

bar.

©Short

bar

Normal

use,

this

bar

connects

between

GNDand

output

(

+

)

or

output

(-)

terminals.

@CVLED

(Green)

The

LED

keeps

lighting

inprocess

of

constant-voltageoperation.

v^CC

LED

(Red)

The

LED

keeps

lighting

inprocess

of

constant-current

operation.

9

5-2,

Rear

panel

®MASTER/SLAVE

switch

Used

during

"one-contro

1"

parallel

operation

inthe

master/slave

configuration.

During

normal

operation,

the

switchshould

be

set

toMASTER.

(Fordetails,

see

section6-3;

"Parallel

Operation.")

(©IN/OUT

terminalsforparallei

operation

Controlterminalsfor

useinthe

"one-control"

parallei

operation

mode.

©Power

cable

Approx.

2

meter-long

power

cable,

equipped

withstandardwallplug.

©Heat

sink

A

heat

dissipator

for

the

transistors,

be

careful

as

this

area

can

beco*™

quite

hot

duringoperation.

10

6.OPERATIONPROCEDURES

6-1.

Stand-alone

operation

*When

using

thepower

supply

in

stand-alone,simplyoperate

by

manipulation

of

the

panel

switches

as

needed.

However,

be

surethat

theMASTER/SLAVE

switch

isset

to

MASTER.

6-2,Serial

connection

Twoormore

units

ofthepower

supply

canbe

hooked

upin

series

to

achieve

in

increase

in

output

voltage.

The

final

output

wi11bethesum

of

the

outputs

ofthe

individual

units.

In

this

situation,

however,

care

must

be

takenthat

the

voltage

of

niether

ofthe

terminalswithrespect

to

thechassis

GND

exceeds

the

ground

proof

voltage.

*In

the

case

of

serial

operation

oftwo

units

(both

same

model);

a.

Forconnection

asin

Fig.4,

the

output

voltage,

but

output

currentwi

11

be

limited

to

within

the

value

specified

for

a

single

unit.

b.

Forconnection

asin

Fig.5,

where

an

intermediatepointis

hooked

upto

ground,

the

configuration

canbe

used

asa

plus/minus

power

supply.

fConnection

ofGND

For

positive

ground

(dotted

line)

Fornegative

ground

(solidline)

E0-E1+ E2

Intermediatepoint

is

hooked

upto

ground.

Figure

3.

Figure

4.

11

Load

6-3

Parallel

operation(master-slavecontrol)

*Two

or

more

units

of

the

same

machine

canbe

hooked

up

in

parallel

to

give

an

increase

inoutput

current.

The

total

output

current

will

be

the

sum

of

theoutput

currents

of

the

individual

machines.

*In

parallel

operation,

one

machine

wi11act

as

themasster

and

allothers

wi

11

act

as

slaves.

The

output

voltages

and

output

currents

are

all

set

fromthemastermachine.

*When

hookingthemachines

up

in

parallei,

be

surethatall

the

power

ON/

OFF

switches

are

OFF.

HOOK-UP

PROCEDURE;

DTurn

the

power

switches

of

themaster

unit

and

slave

unit(s)

all

to"OFF"

2)

Turn

the

MASTRE/SLAVE

switch(located

on

theback

panel)

on

all

the

slave

units

from

"MASTRE"

to

"SLAVE".

3)

Hook

up

the

parallel

operation-use

terminals

(IN/OUT,

located

onthe

rear

panel)

of

themaster

and

slave(s)

as

shown

in

Figure

5.

4)

For

connectingtheoutput

terminals

of

each

of

themachines

to

the

load,

use

all

cords

of

the

same

length.

5)

For

(

+

)

and(-)

grounding

to

the

GND

terminal,

hook

up

themaster

and

slave

machinesviathe

terminals

on

the

panels.

Figure

7

shows

theoutputconnection

scheme

for(-)grounding.

6)

Set

the

voltage

and

current

knobs

of

all

the

slave

unit(s)

to

the

maximum

setting.

7)

Turn

the

power

switches

of

themaster

unit

and

slave

unit(s)

all

to"ON".

Control

the

output

voltage

and

current

as

desired

via

the

voltage

and

current

knobs

on

themaster

unit.

*When

theoutput

goes

to0

amperes

in

the

parallel

operation

mode,

output

voltage

canno

longer

be

controlled

by

themastermachine.

Be

sure

to

keep

a

currentflowingthat

is

several

% of

the

ratedcurrent.

Hook-up

of

rear

panel

terminalsinthe

parallei

operation

mode

12

Figure

5.

Master

Slave

1

Slave

2

Hook-up

front

panel

terminalsintheparallei

operation

mode.

Note;

I =

Ii

+

I2

+

Is

Thevoltagepresets

on

all

the

slave

machines

aresetto

maximum,

The

master

operates

in

constantvoltage

modeand

the

slaves

opeate

in

constant

current

mode.

Figure

6.

For

instructions

onhowto

achieve

parallei

operation

of

multiple

machines

of

different

models,

pleasecontuct

your

dealer

or

our

distributer.

*

Connect

ion

of

Terminal

on

Rear

Panel

While

pressing

onthe

slit

portion

ofthe

terminalwith

an

ordinary

(-)

screwdriver,

insert

theconnectingcable

into

the

round

juck.

When

insertion

is

complete,

remove

thescrewdriver.

The

cablewi11

remain

locked

into

the

terminal

even

after

thescrewdriveris

removed.

Insert

the

connectingcable

13

Slave

1

Slave

2

Load

Push

with(—)screwdriver

Figure

7.

Note:

When

usingstranded

(twisted)

cable,the

connector

should

be

attached

bysoldering.

00.4-1.0

(AWG26M8)

0.

3-0.

75mm2

(AWG22—20)

7.MA

INTENANCE

7-1.

Removing

thecase

Thecasecanbe

removed

bytakingoutthe

screws

onthetopandsidepanels

andpullingthecase

upwards.

J

Screws

Figure8.

7-2.

Changing

theratedsourcevoltage

To

change

theACsourcevoltageofthe

machine,

change

the

internal

power

transformer

and

fuse

specifications

as

shown

inthe

figure

below.

Supplyvoltageconversionand

fuse

replacement

Tothe

switch

primaryAC

voltage.

\

reconnecttheconnectoraccording

to

the

desired

voltage.

/

VoItage-SwItching/Fuse

PC

Board

(View

from

Component

Side)

14

'To

sftitch

the

secondary

voltage.'

reconnect

jumper

lines

andsolder

them

accordingtothedesired

.voltage.)

For

120/240V,

insert

here.

For

100/200/220V,

insert

here.

Figure9.

POWER

SWITCH

7-3

Fusereplacement

Whena

fuse

blows,

replace

it

after

investigating

the

cause

of

the

blow-out.

Furthermore,

since

alterations

ofthe

supply

voltage

isaccompanied

bya

changein

fuse

type,

select

a

fuse

that

has

the

appropriate

rating

according

to

the

chart

below.

Note;

When

changing

the

supply

voltage

or

replacing

a

fuse,

removethe

power

cord

from

the

AC

outlet.

Model

Name

PR18-1.2A

PR18-3A PR18-5A

PR36-1.2A

PR36-3A PR70-1A

PR250-0.42A

100/120V 1.5A 3A 5A 2.5A 5A 3A 4A

200/220/240V 0.8A 2A 3A 1.5A 3A 2A

2.

5A

Supply

voltage

conversion

and

fuse

replacement

Voltage

change

k

Fuse

P.

C.

B

Figure

10.

15

8.

TROUBLESHOOTING

Problem

Indicators

or

Areas

to

check

Cause

power

supply

will

not

goon.

Power

ON

lampdoesnot

light

up. *poor

connection

of

power

cord,

or

broken

wire

*Badpower

switch

*Fuse

meltdown

No

output

voltage.

Voltmeter

doesnot

move.

*

Circuit

malfunction

No

output

current.

Ammeter

does

not

move.

*

Circuit

malfunction

Excessively

large

output.

Output

voltmeter

and

ammeter

readings

do

not

decrease.

*Badpower

trasistor

or

control

mechanism

*Circuit

malfunction

Unstableoutput. Inputvoltageis

wrong.

Machine

is

vibrating.

Strong

magnetic

or

electrical

field

nearby.

*Operatingoutside

the

rated

voltage

range

*0sci1lations

dueto

special

loadtype

*Remove

from

source

of

oscillations.

16

A

product

of

KENWOODCORPORATION

2-5,

1

-chomeShibuya,Shibuya-ku,Tokyo150,Japan

ChangetoInstruction

Manual

ofPR-APowerSupplySeries

Please

changethe

following

descriptionstotheinstructionmanualofPR-Apowersupplyseries.

(Page5)

ERROR

1

3.

SPEC

I F I CATI ONS

I

t em

PR18-1.2A PR18-3A|PR18-5A PR36-1.2A

P

R

3 6 - 3

A

P

R

7 0 - 1 A

PR250-0.

42A

Constantcurrentcharacteristics

Inputfluctuation(forsurgeof

AC±10%) 2mA

Load

fluctuation(forsurgeof0 to100%)

10mA 10mA 15mA 15mA 15mA 10mA

CORRECT

1

3.

SPEC

I F I CATI ONS

I

t em

PR

18-1.2A

P R 1 8 - 3A

P

R

1 8 - 5

A

PR36-1.2A

P

R

3 6 - 3

A

P

R

7 0 - 1 A

PR250-0.

42A

Constantcurrentcharacteristics

Inputfiuctuation(forsurgeof

AC±10%) 2mA

Load

fluctuation(forsurgeof0 to100%)

10mA 15mA 10mA 15mA 10mA

Kenwood PR-A Series User manual

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