GW Instek GPD-4303S User Manual

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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
	3

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

Caution: Identifies conditions or practices that CAUTION 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 GPDX303S series.

•Avoid severe impacts or rough handling that leads to damaging the GPD-X303S series.

•Do not discharge static electricity to the GPDX303S series.

•Do not block or obstruct the cooling fan vent opening.

•Do not perform measurement at circuits directly connected to Mains (see note below).

•Do not disassemble the GPD-X303S series unless you are qualified as service personnel.

(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 source of low-voltage installation.

•Measurement category III is for measurement performed in the building installation.

•Measurement category II is for measurement performed on the circuits directly connected to the low voltage installation.

•Measurement category I is for measurements performed on 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

•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.

Cleaning the GPD-X303S series

•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.

Operation	•	Location: Indoor, no direct sunlight, dust free,
Environment		almost non-conductive pollution (note below)
	• Relative Humidity: < 80%
	•	Altitude: < 2000m
	• Temperature: 0°C to 40°C

GPD-X303S Series User Manual

(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.
Storage	• Location: Indoor
environment	• Relative Humidity: < 70%
	• Relative Humidity: < 70%
	• Temperature: −10°C to 70°C
Disposal	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 or coloured Green or 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 0.75mm2 should be protected by a 3A 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.

GPD-X303S Series User Manual

OVERVIEW

	This chapter describes the GPD-2303S/GPD-
	3303S/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 / The three output modes of GPD-X303S series, Tracking Series / independent, tracking series, and tracking parallel, 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.

Constant Voltage/ Each output channel is completely transistorized Constant Current 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	The front panel display (CH1, CH2) shows the
tracking mode	output voltage or current. When operating in the
	tracking mode, the power supply will
	automatically connect to the autotracking mode.
	11

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	•	Low noise: Temperature controlled cooling fan
	• Compact size, light weight
Operation	•	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
Protection	•	Overload protection
	•	Reverse polarity protection
	•	Overvoltage protection
Interface	•	USB for remote control

GPD-X303S Series User Manual

Principle of Operation

Overview	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.

Block diagram

OVERVIEW

Auxiliary Rectifier 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.

Main Rectifier	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 series-
	wound regulator, which is finally delivered to the
	output terminal.
Current Limiter	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.
Overload	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	Channel	Ammeter	Memory Keys	CH1/CH3, CH2/
VoltMeter	Indicator	Ammeter	Memory Keys	CH4(Beep) Keys
	Indicator			CH4(Beep) Keys
				Voltage
				Knobs
				Parallel
				Keys
				Series Keys
				Current
				Knobs
				Output Key
				Lock Key

	CH4 Output CH2 Output GND Terminal		CH1 Output CH3 Output
Power	CH4 CV/CC	CH2 CV/CC/PAR	CH1 CV/CC	CH3 CV/CC
Switch	Indicator	Indicator	Indicator	Indicator

Display

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

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

CH1/CH2	GPD-2303S/2303S: Selects the output
	channel (CH1/CH2) for level
	adjustment. For level setting details,
	see page27.
CH1/3 and	GPD-4303S: Selects the output
CH2/4	channel (CH1/3 and CH2/4) for
	level adjustment. For level setting
	details, see page27.
Beep Keys	Pressing and holding the CH2
	(2303S/3303S) or the CH2/4 key
	(4303S) enables the beeper sound. For
	details, see page25.
Parallel/Series	Activates Tracking Parallel operation
Keys	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.
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	GPD-X303S Series User Manual
Voltage Knobs	Adjusts the output voltage level for
	the selected channel. Pressing the
	knob switches coarse and fine level
	setting.
Current Knobs	Adjusts the output current level for
	the selected channel. Pressing the
	knob switches coarse and fine level
	setting.
Power Switch	Turns On or Off the main power.
	For power up sequence, see page23.

+ 41 hidden pages

GW Instek GPD-4303S User Manual

Safety Symbols

Safety Guidelines

Power cord for the United Kingdom

Introduction

Series Lineup / Main Features

Main Features

Principle of Operation

Front Panel Overview