Unisource Corporation P-3035T User manual

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PS SERIES

PS-303 (30V/3A Single Output)
PS-305 (30V/5A Single Output)
PS-3030DU (30V/3A Dual Output)
PS-3015TPR (30V/1.5A
P 3625T (30V/2.5A
P-3035T (30V/3A

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2, 5V/5A Fixed Triple Output)

2, 3.3V/5V, 5A Fixed Triple Output)

2, 5V/3A Fixed Triple Output)

INSTRUCTION MANUAL

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1. DESCRIPTION

CONTROLS AND INDICATORS

(1) POWER SWITCH : on/off switch
(2) OUTPUT TERMINAL : positive polarity (+) is red
negative polarity (-) is black
earth and chassis ground is green
(3) DIGITAL VOLT METER : indicates the output voltage
(4) DIGITAL CURRENT METER : indicates the output current
(5) CV LAMP : light when this unit in constant current operation
(6) CC LAMP : lights when this unit is constant current operation
(7) VOLT ADJ (COARSE) KNOB : for the coarse adjustment of the output voltage
(8) VOLT ADJ (FINE) KNOB : for the fine adjustment of the output voltage
(9) AMP ADJ KNOB : for the adjustment of the output current
(10) DC OUTPUT SWITCH : on/off switch for the DC OUTPUT
(11) CC SET SWITCH : current limiting set-up without output terminal shorting orvarious loads, and provide current limit value preview facility
(12) INDEPENDENT/TRACKING SWITCH (TRIPPLE ONLY)

Covering from indepe ndent applying of S1 and S2 outputs to a serial conn ect. In tracking mode , because (-) of S2 and (+) of S1 are internally

connected, it is output in between (+) of S2 and (-) of S1

In case short pins are used in between (_) terminal and ground, eliminate short pins from output terminals of S1 and S2.

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2. SPECIFICATON

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Spec. / Model PS-303 PS-305 PS-3030DU

Output

Voltage 0~30V Single 0~30V Single 0~30V Dual
Current 0~3A 0~5A 0~3A

Constant

Voltage

Constant

Current

Display

Load regulat ion

(0 to 100% load Variation)

Line regulation

(0 to 100% line variation)

Ripple and N oise (rms) 0.5mV

Load regulat ion

(0 to 100% load Variation)

Line regulation

(0 to 100% line variation)

Ripple and N oise (rms) 3mA 5mA 3mA

Type 3 dgts red LED

Voltmeter

Ammeter

Accuracy

Resolution 100mV

Type 3 dgts red LED

Accuracy

10mV 20mV 10mV

4mA 8mA 4mA

8mV

8mV

ρ (0.2%rdg+ 2 digi ts )

ρ (1.0%rdg+3 digits)

Resolution 10mA

LED indicator s Green LED : CV, Red LED : CC

Ground Proof Voltage

Insulation Resistance

Operating Temperature 0䉝㻌㼠㼛㻌㻟㻡䉝㻘㻌㻝㻜㻌㼠㼛㻌㻤㻜㻌㻾㻴

Temperature

Power

Dimension(W×H×Dmm) 124×160×326 234×160×326

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The Specification will be changed without notice.

Storage Temperature -20䉝㻌㼠㼛㻌㻢㻜䉝㻘㻌㻝㻜㻌㼠㼛㻌㻤㻡㻌㻾㻴

Cooling Method Free Air Fan Free Air

Input Power 115 / 230V Selectable

Power Consumption 200VA/160W 330V A/270W 400VA/320W

Weight 5Kg 5.5Kg 7.5Kg

ρ 200V

30Ꮓ @DC500V: AC input to Chassis

20Ꮓ @DC500V: Output terminal to Chassis

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Spec. / Model PS-3015TPR P-3625T P-3035T

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Output

Constant

Voltage

Constant

Current

Fixed Output

Voltage

Current

Load regulat ion

(0 to 100% load Variation)

Line regulation

(0 to 100% line variation)

Ripple and N oise (rms) 0.5mV

Load regulat ion

(0 to 100% load Variation)

Line regulation

(0 to 100% line variation)

Ripple and Noise (rms) 2mA 3mA

Voltage 5V±2.5% 3.3V/5V±2.5% 5V±2.5%

Output

Current 5A±2.5% 3A±2.5%
Ripple and Noise (rms) 2mVrms
Line & Load Regulation 0.1%±5mV

0~30V Dual

5V Fixed

0-1.5A Dual

5A Fixed

3mA 4mA

0~36V Dual

3.3V/5V Fixed
0-2.5A Dual

5A Fixed

8mV

8mV

10mV

0~30V Dual

5V Fixed

0-3A Dual

3A Fixed

Tracking Error(Slave) ±(0.5%+10mV) of the master supply

Type 3 dgts red LED

Voltmeter

Display

Ammeter

LED indicator s Green LED : CV, Red LED : CC

Ground Proof Voltage ± 200V

Insulation Resistance

Operating Temperature

Temperature

Power Input Power 115 / 230V Select able 230V 115 / 230V Selectable

Storage Temperature

Cooling Method Free Air Fan Free Air

Accuracy ± (0.2%rdg+ 2 digits)

Resolution 100mV

Type 3 dgts red LED

Accuracy ± (1.0%rdg+ 3 digits)

Resolution 10mA

30Ꮓ @DC500V: AC input to Chassis

20Ꮓ @DC500V: Output terminal to Chassis

0ఁ to 35ఁ, 10 to 80 RH

-20ఁ to 60ఁ, 10 to 85 RH

Dimension(W×H×Dmm) 234×160×326

Weight 5Kg 5.5Kg 7.5Kg

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3. OPERATION

WARNING : Before connecting line power to your power supply, make sure that the AC input

voltage is correct for your power source.

TURN-ON CHECKOUT PROCEDURES.

a) Turn A adj. control fully counter clockwise.

b) Set AC power switch push to on position, digital display and CV lamp should light.
c) Turn VOLTAGE controls fully counter clockw ise to ensure that output d ecrease to 0V dc

then fully clockwise to ensure that output voltage increase to maximum output voltage.

d) While depressing CC SET push button, turn the CURRENT contro l fully counter clockw ise

and then fully clockwise to ensure that the current limit value can be set from zero to
maximum rated value.

e) Connect load to output terminals.

CONSTANT VOLTAGE OPERATION

To set up a power supply for a constant voltage operation, proceed as follow;

a) Turn on power supply and adjust V adj. Control for desired output maximum (output

terminal open). CV lamp should light.

b) While depressing CC SET push button, adjust A adj. Control for operation, if a load

change causes the current limit to be exceeded, the power supply will automatically
crossover to constant current mode and output voltage will drop proportionately.

c) Push-on DC OUT push button switch for DC voltage output.

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CONSTANT CURRENT OPERATION

To s et up a power supply for a constant current operation, proceed as follow;

a) Turn A adj. control fully counter clockwise to ensure that output decreases to 0A, and

then on the power supply.

b) Adjust V adj. Control (no load conn ected) fo r maximum ou tput vo ltage allowable (vo ltage

limit), as determined by load conditions.

During actual operation, if a load change causes the voltage limit to be exceeded. The
power supply will automatically crossover to constant voltage operation at the preset

voltage limit and output current will drop proportionately.
c) Adjust A adj. control for desired output current while depressing CC SET button.
d) Push-on DC OUT push button switch for DC voltage output.

CONNECTING LOADS

The output of the supply is isolated from earth ground.
Either output terminal may be grounded or the output can be floated up to 240 volts off ground.

TRACKING OPERATION (TRIPPLE OUTPUT ONLY)

To select a tracking operation output as follows;

a) Set independent and tracking select switch to tracking position.
b) Depressing CC SET push button switch and adjust A adj. control of the each for

maximum output current allowable(current limit), as determined by load conditions.

c) Adjust V adj. controls (COARSE and FINE) of the MASTER fro desired output Voltage.

This time, V adj. controls (COARSE and FINE) of the SLA VE should be set on maximum.

d) Connect load using the negative (black) terminal of the SL AVE supply and the positive

(red) terminal of the MASTER supply.

e) Push DC OUT switch of both.

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4. MAINTENANCE

WARNING : The following instructions are for use by qualified personnel only. To avoid

electrical shock, do not perform any servicing other then contained in the operating instructions
unless you are qualified to do so.

Fuse Replacement

If the AC fuse blows, the CV or CC lamp will not light and the power supply will not operate. If
the DC fuse blows, the CV or CC lamp and digital display is light but DC OUTPUT will not
operate.

The fuse should not normally open unless a problem has developed in the unit. Try to
determine and correct the cause of the blown fuse, then replace only with a fuse the correct
rating and type.

The fuse located on the real panel.

line Voltage Conversion

The primary winding of the power transformer is tapped to permit operation from 115 or 230
VAC, 50/60Hz line voltage. Conversion from one line voltage to another is done by AC select
switch on the real panel.

The line voltage to swit ch the unit was factory setted. To convert to a diff erent line voltage,
perform the following procedure;

a) Make sure the power cord is unplugged.
b) Change the AC selects switch to the desired line voltage position.
c) A change in line voltage may also require a corresponding change of fuse value. Install

the correct fuse value as listed on real panel.

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5. CALIBRATION ADJUSTMENT

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ADJUSTMENT OF THE RATING VOLTAGE.

a) Connect digital multimeter across output terminals of supply and set the DC volt position.

b) Turn on supply and push on DC OUT push button switch.

c) Adjust voltage controls (COARSE and FINE) fully clockwise.

d) Adjust S203 for a reading of rate voltsÝ

e) Adjust S401 until digital multimeter reads exactly maximum rated output voltage

f) Push-off DC O UT push butto n switch and adjust S202 until front panel met er reads exactly

digital multimeter reading.

1.05 on the digital multimeter.

ADJUSTMENT OF THE RATING CURRENT.

a) Connect load resistor and digital multimeter with series and set the range to DC 20Amp

position.
b) Turn on supply.
c) Adjust voltage controls and current control to minimum (fully counter clockwise).
d) Adjust S201 for a reading of 0 Amp on the digital multimeter.
e) Adjust voltage controls and current control to minimum (fully clockwise).
f) Adjust S501 until front panel meter reads exactly digital multimeter reading.
g) Push-on CC SET push button switch.
h) Adjust S204 until digital multimeter exactly the maximum rated output current.

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