GW Instek GPD-X303S Series User Manual

DC Power Supply

GPD-X303S Series

USER MANUAL

GW INSTEK PART NO. 82PD-433S0M01

ISO-9001 CERTIFIED MANUFACTURER

This manual contains proprietary information, which is protected by copyrights. All rights are reserved. No part of this manual may be photocopied, reproduced or translated to another language without prior written consent of Good Will company.

The information in this manual was correct at the time of printing. However, Good Will continues to improve products and reserves the rights to change specification, equipment, and maintenance procedures at any time without notice.

Good Will Instrument Co., Ltd. No. 7-1, Jhongsing Rd., Tucheng Dist., New Taipei City 236, Taiwan (R.O.C).

TABLE OF CONTENTS

Table of Contents

SAFETY INSTRUCTIONS ................................................... 5

OVERVIEW ...................................................................... 10

Introduction......................................... 10

Series Lineup / Main Features .............13

Principle of Operation.......................... 14

Front Panel Overview........................... 16

Rear Panel Overview ............................21

CV/CC Crossover Characteristics ......... 22

SETUP............................................................................. 23

Power Up ............................................. 23

Load Cable Connection ........................ 24

Output On/Off..................................... 25

Beep On/Off ........................................25

Switch between channels ..................... 26

Front Panel Lock .................................. 26

OPERATION.................................................................... 27

CH1/CH2 Independent Mode .............. 27

CH3 Independent Mode....................... 29

CH4 Independent Mode....................... 31

CH1/CH2 Tracking Series Mode........... 33

CH1/CH2 Tracking Parallel Mode ........ 39

SAVE/RECALL SETUP ...................................................... 41

Save Setup ........................................... 41

Recall Setup......................................... 42

REMOTE CONTROL ........................................................ 43

Remote Control Setup..........................43

GPD-X303S Series User Manual

Remote Connection Step......................44

Command Syntax .................................46

Error Messages .................................... 46

Command List...................................... 47

Command Details ................................ 48

FAQ ................................................................................ 53

APPENDIX ...................................................................... 54

Fuse Replacement................................54

Specifications ......................................55

Declaration of Conformity....................57

INDEX............................................................................. 58

SAFETY INSTRUCTIONS

This chapter contains important safety instructions that you must follow when operating the GPDX303S series and when keeping it in storage. Read the following before any operation to insure your safety and to keep the best condition for the GPDX303 series.

Safety Symbols

These safety symbols may appear in this manual or on the GPDX303S series.

WARNING

CAUTION

Warning: Identifies conditions or practices that could result in injury or loss of life.

Caution: Identifies conditions or practices that could result in damage to the GPD-X303S series or to other properties.

DANGER High Voltage

Attention Refer to the Manual

Protective Conductor Terminal

Earth (ground) Terminal

GPD-X303S Series User Manual

Do not dispose electronic equipment as unsorted municipal waste. Please use a separate collection facility or contact the supplier from which this instrument was purchased.

Safety Guidelines

General Guidelines

CAUTION

• Do not place any heavy object on the GPD-

• Avoid severe impacts or rough handling that

• Do not discharge static electricity to the GPD-

• Do not block or obstruct the cooling fan vent

• Do not perform measurement at circuits directly

• Do not disassemble the GPD-X303S series unless

(Measurement categories) EN 61010-1:2001 specifies the measurement categories and their requirements as follows. The GPD-X303S series falls under category I.

• Measurement category IV is for measurement performed at the

• Measurement category III is for measurement performed in the

• Measurement category II is for measurement performed on the

• Measurement category I is for measurements performed on

X303S series.

leads to damaging the GPD-X303S series.

X303S series.

opening.

connected to Mains (see note below).

you are qualified as service personnel.

source of low-voltage installation.

building installation.

circuits directly connected to the low voltage installation.

circuits not directly connected to Mains.

Power Supply

WARNING

• AC Input voltage: 100V/120V/220V/230V

±10%, 50/60Hz

• Connect the protective grounding conductor of

the AC power cord to an earth ground, to avoid electrical shock.

SAFETY INSTRUCTIONS

Fuse

WARNING

Cleaning the GPD-X303S series

Operation Environment

• Fuse type: 100V/120V: T6.3A/250V,

220V/230V: T3.15A/250V

• Make sure the correct type of fuse is installed

before power up.

• To ensure fire protection, replace the fuse only

with the specified type and rating.

• Disconnect the power cord before fuse

replacement.

• Make sure the cause of fuse blowout is fixed

before fuse replacement.

• Disconnect the power cord before cleaning.

• Use a soft cloth dampened in a solution of mild

detergent and water. Do not spray any liquid.

• Do not use chemicals or cleaners containing

harsh products such as benzene, toluene, xylene, and acetone.

• Location: Indoor, no direct sunlight, dust free,

almost non-conductive pollution (note below)

• Relative Humidity: < 80%

• Altitude: < 2000m

• Temperature: 0°C to 40°C

GPD-X303S Series User Manual

Storage environment

Disposal

(Pollution Degree) EN 61010-1:2001 specifies the pollution degrees and their requirements as follows. The GPD-X303S series falls under degree 2.

Pollution refers to “addition of foreign matter, solid, liquid, or gaseous (ionized gases), that may produce a reduction of dielectric strength or surface resistivity”.

• Pollution degree 1: No pollution or only dry, non-conductive

pollution occurs. The pollution has no influence.

• Pollution degree 2: Normally only non-conductive pollution

occurs. Occasionally, however, a temporary conductivity caused by condensation must be expected.

• Pollution degree 3: Conductive pollution occurs, or dry, non-

conductive pollution occurs which becomes conductive due to condensation which is expected. In such conditions, equipment is normally protected against exposure to direct sunlight, precipitation, and full wind pressure, but neither temperature nor humidity is controlled.

• Location: Indoor

• Relative Humidity: < 70%

• Temperature: −10°C to 70°C

Do not dispose this instrument as unsorted municipal waste. Please use a separate collection facility or contact the supplier from which this instrument was purchased. Please make sure discarded electrical waste is properly recycled to reduce environmental impact.

SAFETY INSTRUCTIONS

Power cord for the United Kingdom

When using the GPD-2303S/GPD-3303S/GPD-4303S series in the United Kingdom, make sure the power cord meets the following safety instructions.

NOTE: This lead/appliance must only be wired by competent persons

WARNING: THIS APPLIANCE MUST BE EARTHED

IMPORTANT: The wires in this lead are coloured in accordance with the following code:

Green/ Yellow: Earth

Blue: Neutral

Brown: Live (Phase)

As the colours of the wires in main leads may not correspond with the colours marking identified in your plug/appliance, proceed as follows:

The wire which is coloured Green & Yellow must be connected to the Earth

terminal marked with the letter E or by the earth symbol Green & Yellow.

The wire which is coloured Blue must be connected to the terminal which is marked with the letter N or coloured Blue or Black.

The wire which is coloured Brown must be connected to the terminal marked with the letter L or P or coloured Brown or Red.

If in doubt, consult the instructions provided with the equipment or contact the supplier.

This cable/appliance should be protected by a suitably rated and approved HBC mains fuse: refer to the rating information on the equipment and/or user instructions for details. As a guide, cable of 0.75mm or 5A fuse. Larger conductors would normally require 13A types, depending on the connection method used.

Any moulded mains connector that requires removal /replacement must be destroyed by removal of any fuse & fuse carrier and disposed of immediately, as a plug with bared wires is hazardous if a engaged in live socket. Any re-wiring must be carried out in accordance with the information detailed on this label.

or coloured Green or

should be protected by a 3A

GPD-X303S Series User Manual

OVERVIEW

This chapter describes the GPD-2303S/GPD3303S/GPD-4303S series in a nutshell, including its main features and front / rear panel introduction. After going through the overview, follow the Setup chapter (page23) to properly power up and set operation environment.

Introduction

Overview

The GPD-X303S regulated DC power supply series are light weight, adjustable, multifunctional work stations. The GPD-2303S has a 2 independent adjustable voltage outputs. The GPD-3303S three independent outputs: two with adjustable voltage levels and one with fixed level selectable from

2.5V, 3.3V and 5V. The GPD-4303S has four independent voltage outputs that are all fully adjustable. The GPD-X303S series can be used for logic circuits where various output voltage or current are needed, and for tracking mode definition systems where plus and minus voltages with insignificant error are required.

OVERVIEW

Independent / Tra c k i n g S e ri es / Tracking Parallel

Constant Voltage/ Constant Current

The three output modes of GPD-X303S series, independent, tracking series, and tracking parallel, can be selected through pressing the TRACKING key on the front panel. In the independent mode, the output voltage and current of each channel are controlled separately. The isolation degree, from output terminal to chassis or from output terminal to output terminal, is 500V. In the tracking modes, both the CH1 and CH2 outputs are automatically connected in series or parallel; no need to connect output leads. In the series mode, the output voltage is doubled; in the parallel mode, the output current is doubled.

Each output channel is completely transistorized and well-regulated, and works in constant voltage (CV) or constant current (CC) mode. Even at the maximum output current, a fully rated, continuously adjustable output voltage is provided. For a big load, the power supply can be used as a CV source; while for a small load, a CC source. When in the CV mode (independent or tracking mode), output current (overload or short circuit) can be controlled via the front panel. When in the CC mode (independent mode only), the maximum (ceiling) output voltage can be controlled via the front panel. The power supply will automatically cross over from CV to CC operation when the output current reaches the target value. The power supply will automatically cross over from CC to CV when the output voltage reaches the target value. For more details about CV/CC mode operation, see page22.

Automatic tracking mode

The front panel display (CH1, CH2) shows the output voltage or current. When operating in the tracking mode, the power supply will automatically connect to the auto- tracking mode.

GPD-X303S Series User Manual

Dynamic load

When used in audio production lines, the power supply can provide a continuous or dynamic load using a jumper connector (JP101/JP401). When the jumper connectors are connected to the “ON” position (shorted), a stable DC current power will be provided for audio power amplifiers.

OVERVIEW

Series Lineup / Main Features

Main Features

Performance

Operation

Protection

• Low noise: Temperature controlled cooling fan

• Compact size, light weight

• Constant Voltage / Constant Current operation

• Tracking Series / Tracking parallel operation

• Output On/Off control

• Multi-output:

GPD-2303S: 30V/3A x2; GPD-3303S: 30V/3A x2, 2.5V/3.3V/5V/3A x 1 GPD-4303S: 30V/3A x2, 5V/1A x1, 5V/3A

(10V/1A) x1

• Digital panel control

• 4 sets of panel setup save/recall

• Coarse and fine Voltage/Current control

• Software calibration

• Buzzer output

• Key lock function

• Overload protection

• Reverse polarity protection

• Overvoltage protection

Interface

• USB for remote control

GPD-X303S Series User Manual

Principle of Operation

Overview

Block diagram

The power supply consists of the following.

• AC input circuit

• Transformer

• Bias power supply including rectifier, filter,

pre-regulator and reference voltage source

• Main regulator circuit including the main

rectifier and filter, series regulator, current comparator, voltage comparator, reference voltage amplifier, remote device and relay control circuit

The block diagram below shows the circuit arrangement. The single phase input power is connected to the transformer through the input circuit. Details of each part are described in the next page.

OVERVIEW

Auxiliary Rectifier

Main Rectifier

Current Limiter

Overload

The auxiliary rectifiers D1011~ D1014 provide bias voltage filtered by the capacitors C102 and C103, for the pre-regulators U101 and U102. They provide a regulated voltage for other modules.

The main rectifier is a full wave bridge rectifier. It provides the power after the rectifier is filtered by the capacitor C101, and then regulated via a serieswound regulator, which is finally delivered to the output terminal.

U104 acts as a current limiter. When the current is over predetermined rating, U104 is activated and decreases the current. U208 provides a reference voltage. U206 is an inverter amplifier. U103 is a comparator amplifier which compares the reference voltage to the feedback voltage, and then delivers it to Q102, which then calibrates the output voltage.

When the unit is overloaded, Q107 activates to control the current magnitude of Q102, to limit the output current. The relay control circuit controls the power dissipation in the series-wound regulated circuit.

GPD-X303S Series User Manual

Front Panel Overview

VoltMeter Ammeter Memory Keys

CH4 Output

Power Switch

Channel Indicator

CH4 CV/CC Indicator

GND Terminal

CH2 CV/CC/PAR Indicator

CH1 OutputCH2 Output

Display

Vol tmeter

Displays output voltage of each channel. GPD-4303S: CH1/CH3 and CH2/CH4 GPD-2303S/3303S: CH1 and CH2

CH1/CH3, CH2/ CH4(Beep) Keys

CH1 CV/CC Indicator

Voltage Knobs

Parallel Keys

Series Keys Current

Knobs

Output Key

Lock Key

CH3 Output

CH3 CV/CC Indicator

5 digits:

Ammeter

Displays output current of each channel. GPD-4303S: CH1/CH3 and CH2/CH4 GPD-2303S/3303S: CH1 and CH2

4 digits:

OVERVIEW

Control Panel

Memory Keys

CH1/CH2

CH1/3 and CH2/4

Beep Keys

Parallel/Series Keys

Saves or recalls panel settings. Four settings, 1 ~ 4, are available. For save/recall details, see page41.

GPD-2303S/2303S: Selects the output channel (CH1/CH2) for level adjustment. For level setting details, see page27.

GPD-4303S: Selects the output channel (CH1/3 and CH2/4) for level adjustment. For level setting details, see page27.

Pressing and holding the CH2 (2303S/3303S) or the CH2/4 key (4303S) enables the beeper sound. For details, see page25.

Activates Tracking Parallel operation or Tracking Series operation, For details, see page33.

Lock Key

Locks or unlocks the front panel keys (excluding the OUTPUT key). Pressing the LOCK key will also exit remote mode if the machine is in remote mode. For details, see page26.

Output Key

Turns the output on or off.

GPD-X303S Series User Manual

Voltage Knobs

Current Knobs

Power Switch

Adjusts the output voltage level for the selected channel. Pressing the knob switches coarse and fine level setting.

Adjusts the output current level for the selected channel. Pressing the knob switches coarse and fine level setting.

Turns On

or Off the main power.

For power up sequence, see page23.

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