GW Instek SPS-1230, SPS-1820, SPS-3610, SPS-2415, SPS-606 USER MANUAL

Multi-Range DC Power Supply

PSW Series

USER MANUAL

GW INSTEK PART NO. 82SW-80400M01

ISO-9001 CERTIFIED MANUFACTURER

This manual contains proprietary information, which is protected by copyright. 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.

SAFETY INSTRUCTIONS

Table of Contents

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

GETTING STARTED ........................................................... 9

PSW Series Overview ........................... 10

Appearance .......................................... 14

Theory of Operation ............................. 20

OPERATION .................................................................... 31

Set Up .................................................. 33

Basic Operation ................................... 43

Parallel / Series Operation ................... 54

Test Scripts .......................................... 66

CONFIGURATION ........................................................... 74

Configuration ....................................... 75

ANALOG CONTROL ........................................................ 88

Analog Remote Control Overview ......... 89

Remote Monitoring ............................ 104

COMMUNICATION INTERFACE ..................................... 107

Interface Configuration ...................... 108

MAINTENANCE ............................................................. 112

FAQ ............................................................................... 114

APPENDIX ..................................................................... 116

PSW Default Settings ......................... 116

Error Messages & Messages .............. 118

LCD Display Format ........................... 118

PSW Series User Manual

PSW Specifications ............................ 119

PSW Dimensions ............................... 128

Declaration of Conformity .................. 131

INDEX ............................................................................ 132 

SAFETY INSTRUCTIONS

This chapter contains important safety instructions that you must follow during operation and storage. Read the following before any operation to insure your safety and to keep the instrument in the best possible condition.

Safety Symbols

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

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 PSW or to other properties.

DANGER High Voltage

Attention Refer to the Manual

Protective Conductor Terminal

Earth (ground) Terminal

PSW 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 Guideline

CAUTION

Power Supply

WARNING

 Do not place any heavy object on the PSW.  Avoid severe impact or rough handling that

 Do not discharge static electricity to the PSW.  Use only mating connectors, not bare wires, for

 Do not block the cooling fan opening.  Do not disassemble the PSW unless you are

(Measurement categories) EN 61010-1:2001 specifies the measurement categories and their requirements as follows. the PSW falls under category II.

 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

 AC Input voltage range: 85VAC~265VAC  Frequency: 47Hz~63Hz  To avoid electrical shock connect the protective

leads to damaging the PSW.

the terminals.

qualified.

source of low-voltage installation.

building installation.

circuits directly connected to the low voltage installation.

circuits not directly connected to Mains.

grounding conductor of the AC power cord to an earth ground.

SAFETY INSTRUCTIONS

Cleaning the PSW

Operation Environment

Storage environment

 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 containing harsh material

such as benzene, toluene, xylene, and acetone.

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

almost non-conductive pollution (Note below)

 Relative Humidity: 20%~ 85%  Altitude: < 2000m  Temperature: 0°C to 50°C

(Pollution Degree) EN 61010-1:2001 specifies the pollution degrees and their requirements as follows. The PSW 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  Temperature: -25°C to 70°C  Relative Humidity: <90%

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.

PSW Series User Manual

Power cord for the United Kingdom

When using the power supply 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 coloured 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 either the letter E, the earth symbol

or coloured Green/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, a cable of 0.75mm conductors would normally require 13A types, depending on the connection method used.

Any exposed wiring from a cable, plug or connection that is engaged in a live socket is extremely hazardous. If a cable or plug is deemed hazardous, turn off the mains power and remove the cable, any fuses and fuse assemblies. All hazardous wiring must be immediately destroyed and replaced in accordance to the above standard.

should be protected by a 3A or 5A fuse. Larger

GETTING STARTED

This chapter describes the power supply in a nutshell, including its main features and front / rear panel introduction. After going through the overview, please read the theory of operation to become familiar with the operating modes, protection modes and other safety considerations.

PSW Series Overview ....................................................... 10

Series lineup .............................................................................................................. 10

Main Features ........................................................................................................... 11

ccessories ................................................................................................................ 11

Package Contents ..................................................................................................... 13

Appearance ..................................................................... 14

PSW Front Panel ..................................................................................................... 14

Rear Panel ................................................................................................................. 17

PSW Series User Manual

PSW Series Overview

Series lineup

The PSW series consists of 6 models, divided into 3 different model types covering 3 power capacities: Type I (360 Watt), Type II (720 Watt) and Type III (1080 Watt).

Model name Type Voltage Rating Current Rating Power

PSW 30-36 Type I 0~30V 0~36A 360W

PSW 80-13.5 Type I 0~80V 0~13.5A 360W

PSW 30-72 Type II 0~30V 0~72A 720W

PSW 80-27 Type II 0~80V 0~27A 720W

PSW 30-108 Type III 0~30V 0~108A 1080W

PSW 80-40.5 Type III 0~80V 0~40.5A 1080W

Apart from the differences in output, each unit differs in size. The 720 and 1080 watt models are larger than the 360 watt models to accommodate the increase in power.

360 Watt models

Type I

Voltage

Multi-Range DC Power Supply

360W

PSW 30-36

VSR

C V

RMT

%W10080604020

ALM

Current

DLY

C C

ISR

Function OVP/OCP S et

Output

PWR DSPLLock/LocalTest

720 Watt models

Type I I

Multi-Range DC Power Supply

PSW 30-72

VSR C V

RMT ALM DLY

C C ISR

Function OVP/OCP Set

PWR DSPLLock/LocalTest

1080 Watt models

Type III

Voltage

720W

W V

%W10080604020

Current

W A

Output

Main Features

GETTING STARTED

Performance

Features

Interface

 High performance/power  Power efficient switching type power supply  Low impact on load devices  Fast transient recovery time of 1ms  Fast output response time

 OVP, OCP and OTP protection  Adjustable voltage and current slew rates  User adjustable bleeder control to quickly

dissipate the power after shutdown to safe levels.

 Extensive remote monitoring and control

options

 Support for serial and parallel connections  Power on configuration settings.  Supports test scripts  Web server monitoring and control

 Ethernet port  Analog connector for analog voltage and current

monitoring

 USB host and device port

Accessories

Standard Accessories

Region dependant User manual

4323-30600101 Power cord (Type I/II)

Part number Description

PSW Series User Manual

4320-91001101 Power cord (Type III)

63SC-XF100201 Output terminal cover: top

63SC-XF100301 Output terminal cover:

bottom

GTL-123 Test leads: 1x red, 1x black

PSW-004 Basic Accessory Kit:

M4 terminal screws and washers x2, M8 terminal bolts, nuts and washers x2, Air filter x1, Analog control protection dummy x1, Analog control lock level x1

Optional

Part number Description

Accessories

GET-001 Extended terminal

PSW-001 Accessory Kit:

Pin contact x10, Socket x1, Protection cover x1

PSW-002 Simple IDC

Tool

PSW-003 Contact

Removal Tool

GRA-410-J Rack mount adapter (JIS)

GRA-410-E Rack mount adapter (EIA)

GUG-001 GPIB to USB adapter

GTL-246 USB Cable

57RG-30B00201 Large filter (Type II/III)

Download Name Description

psw_cdc.inf USB driver

GETTING STARTED

Package Contents

Check the contents before using the PSW.

Opening the box

Contents (single unit)

 Main unit  Output terminal cover

(top x1, bottom x1)

 Test leads (red x1,

black x1)

 M4 terminal screws

and washers x2

 Air filter x1

 Power cord x1 (region

dependent)

 Analog control

protection dummy x1

 Analog control lock

lever x1

 M8 terminal bolts,

nuts and washers X2

PSW Series User Manual

Appearance

PSW Front Panel

PSW 80-27, PSW 30-72 (720W)

PSW 80-40.5, PSW 30-108 (1080W) PSW 80-13.5,

PSW 30-36 (360W)

Multi-Range DC Power Supply

PSW 30-36

VSR C V

RMT ALM DLY

C C ISR

Function OVP/OCP Set

360W

W V

%W10080604020

W A

PWR DSPLLock/LocalTest

Voltage

Current

Output

GETTING STARTED

Function Keys

The Function keys along with the Output key will light up when a key is active.

The Function key is used to configure the power supply.

Set the over current or over voltage protection levels.

Sets the current and voltage limits.

Used to run customized scripts for testing.

Lock/Local

Locks or unlocks the panel keys to prevent accidentally changing panel settings.

Toggles the display from viewing V/AV/WA/W.

Display Indicators

ALM

C C

Voltage Slew Rate Constant Voltage Mode Remote Control Mode Alarm on Delay Outpu Constant Current Mode Current Slew Rate

PSW Series User Manual

Voltage Knob

Current Knob

Output

USB

Power Switch

100

Current

Power bar Indicates the current power output

as a percentage.

Sets the voltage.

Sets the current.

Press to turn on the output. The Output key will light up when the output is active.

USB A port for data transfer, loading test scripts etc.

Used to turn the power on/off.

GETTING STARTED

Rear Panel

PSW 80-27, PSW 30-72 (720W)

PSW 80-40.5, PSW 30-108 (1080W) PSW 80-13.5,

PSW 30-36 (360W)

AC Input

SER.NO. LABEL

LAN

100 240VAC

47 63Hz

1500VA MAX.

PSW Series User Manual

Analog Control Connector

Output Terminals

USB B port

Standard 26 pin MIL connector (OMRON XG4 IDC plug).

The analog control connector is used to monitor current and voltage output, machine status (OVP, OCP, OTP etc.), and for analog control of the current and voltage output.

Use an OMRON XG5 IDC socket as the mating socket.

Positive (+) and negative (-) output terminals.

Chassis ground

Sense (-) and Sense (+) terminals.

The USB B port is used for remote control.

Fans

Ethernet Port

Temperature controlled fans

The ethernet port is used for remote control and digital monitoring from a PC.

Line Voltage Input

(Type I/TypeII)

Type I: PSW 30-36/80-13.5 Type II: PSW 30-72/80-27

 Voltage Input: 100~240 VAC  Line frequency: 50Hz/60 Hz

(Automatically switchable)

GETTING STARTED

Line Voltage Input

(Type III)

Type III: PSW 30-108/80-40.5

 Voltage Input: 100~240 VAC  Line frequency: 50Hz/60 Hz

(Automatically switchable)

PSW Series User Manual

Theory of Operation

The theory of operation chapter describes the basic principles of operation, protection modes and important considerations that must be taken into account before use.

Operating Area Description

Description

The PSW power supplies are regulated DC power supplies with a high voltage and current output. These operate in CC or CV mode within a wide operating range limited only by the output power.

The operating area of each power supply is determined by the rated output power as well as the voltage and current rating. For example the operating area and rated power output for the PSW 30-36 is shown below.

When the power supply is configured so that the total output (current x voltage output) is less than the rated power output, the power supply functions as a typical constant current, constant voltage power supply.

If however, the power supply is configured such that the total output (current x voltage output) exceeds the rated power output, the

GETTING STARTED

effective output is actually limited to the power limit of the unit. In this case the output current and voltage then depend purely on the load value.

Below is a comparison of the operating areas of each power supply.

PSW 80V Series Operating Area

4.5 9.0 13.5

90 80

PSW 30V Series Operating Area

12 24 36

Voltage (V)

020

Current (A)

27 40.5

Type I Type II Type III

72 108

Type I Type II Type III

100

26.6

4540205

120

Current (A)

PSW Series User Manual

CC and CV Mode

CC and CV mode Description

When the power supply is operating in constant current mode (CC) a constant current will be supplied to the load. When in constant current mode the voltage output can vary, whilst the current remains constant. When the load resistance increases to the point where the current limit (I

) can no longer be sustained

SET

the power supply switches to CV mode. The point where the power supply switches modes is the crossover point.

When the power supply is operating in CV mode, a constant voltage will be supplied to the load, whilst the current will vary as the load varies. At the point that the load resistance is too low to maintain a constant voltage, the power supply will switch to CC mode and maintain the set current limit.

The conditions that determine whether the power supply operates in CC or CV mode depends on the set current (I (V

), the load resistance (RL) and the critical

SET

resistance (R determined by V

). The critical resistance is

SET/ISET

. The power supply

), the set voltage

SET

will operate in CV mode when the load resistance is greater than the critical resistance. This means that the voltage output will be equal to the V less than I

voltage but the current will be

SET

. If the load resistance is reduced

SET

to the point that the current output reaches the I

level, the power supply switches to CC

SET

mode.

GETTING STARTED

Conversely the power supply will operate in CC mode when the load resistance is less than the critical resistance. In CC mode the current output is equal to I less than V

SET

and the voltage output is

SET

Slew Rate

PSW Series User Manual

Theory

Bleeder Control

The PSW has selectable slew rates for CC and CV mode. This gives the PSW power supply the ability to limit the current/voltage draw of the power supply. Slew rate settings are divided into High Speed Priority and Slew Rate Priority. High Speed Priority mode disables slew rate settings for CC or CV mode. Slew Rate Priority mode allows for user adjustable slew rates for CC or CV mode. The rising and falling slew rate can be set independently.

Slew rate=

Disabled

Slew rate =

Enabled

Description

The PSW DC power supplies employ a bleed resistor in parallel with the output terminals.

Bleed resistors are designed to dissipate the power from the power supply filter capacitors when power is turned off and the load is disconnected. Without a bleed resistor, power

GETTING STARTED

may remain charged on the filter capacitors for some time and be potentially hazardous.

In addition, bleed resistors also allow for smoother voltage regulation of the power supply as the bleed resistor acts as a minimum voltage load.

The bleed resistance can be turned on or off using the configuration settings.

Note

Internal Resistance

Description

Internal Resistance Range

By default the bleed resistance is on. For battery charging applications, be sure to turn the bleed resistance off as the bleed resistor can discharge the connected battery when the unit is off.

On the PSW, the internal resistance of the power supply can be user-defined in software. (Internal Resistance Setting, page 78). When the internal resistance is set it can be seen as a resistance in series with the positive output terminal. This allows the power supply to simulate power sources that have internal resistances such as lead acid batteries.

Unit Model PSW 30-36 PSW 30-72 PSW 30-108 PSW 80-13.5 PSW 80-27 PSW 80-40.5

Internal Resistance Range

0.000 ~ 0.833Ω

0.000 ~ 0.417Ω

0.000 ~ 0.278Ω

0.000 ~ 5.926Ω

0.000 ~ 2.963Ω

0.000 ~ 1.975Ω

PSW Series User Manual

Alarms

The PSW power supplies have a number of protection features. When one of the protection alarms are set, the ALM icon on the display will be lit. For details on how to set the protection modes, please see page 43.

OVP

Overvoltage protection (OVP) prevents a high voltage from damaging the load.

OCP

Overcurrent protection prevents high current from damaging the load.

OTP

Over temperature protection protects the instrument from overheating.

Power Switch Trip

When the Power Switch Trip configuration setting is enabled, the power supply will automatically shut down when a protection setting has been tripped (OCP, OVP, OTP).

Alarm output

Alarms are output via the analog control connector. The alarm output is an isolated open-collector photo coupler output.

Considerations

The following situations should be taken into consideration when using the power supply.

Inrush current

When the power supply switch is first turned on, an inrush current is generated. Ensure there is enough power available for the power supply when first turned on, especially if a number of units are turned on at the same time.

GETTING STARTED

Pulsed or Peaked loads

Reverse Current: Regenerative load

When the load has current peaks or is pulsed, it is possible for the maximum current to exceed the mean current value. The PSW power supply ammeter only indicates mean current values, which means for pulsed current loads, the actual current can exceed the indicated value. For pulsed loads, the current limit must be increased, or a power supply with a greater capacity must be chosen. As shown below, a pulsed load may exceed the current limit and the indicated current on the power supply ammeter.

When the power supply is connected to a regenerative load such as a transformer or inverter, reverse current will feed back to the power supply. The PSW power supply cannot absorb reverse current. For loads that create reverse current, connect a resistor in parallel to the power supply to bypass the reverse current. This description only applies when the bleed resistance is off.

PSW Series User Manual

Note

Reverse Current: Accumulative energy.

CAUTION

The current output will decrease by the amount of current absorbed by the resistor.

Ensure the resistor used can withstand the power capacity of the power supply/load.

When the power supply is connected to a load such as a battery, reverse current may flow back to the power supply. To prevent damage to the power supply, use a reverse-currentprotection diode in series between the power supply and load.

Ensure the reverse withstand voltage of the diode is able to withstand 2 times the rated output voltage of the power supply and the forward current capacity can withstand 3 to 10 times the rated output current of the power supply.

Ensure the diode is able to withstand the heat generated in the following scenarios.

When the diode is used to limit reverse voltage, remote sensing cannot be used.

GETTING STARTED

Grounding

The output terminals of the PSW power supplies are isolated with respect to the protective grounding terminal. The insulation capacity of the load, the load cables and other connected devices must be taken into consideration when connected to the protective ground or when floating.

Floating

WARNING

As the output terminals are floating, the load and all load cables must have an insulation capacity that is greater than the isolation voltage of the power supply.

If the insulation capacity of the load and load cables is not greater than the isolation voltage of the power supply, electric shock may occur.

PSW Series User Manual

Grounded output terminal

CAUTION

If the positive or negative terminal is connected to the protective ground terminal, the insulation capacity needed for the load and load cables is greatly reduced. The insulation capacity only needs to be greater than the maximum output voltage of the power supply with respect to ground.

If using external voltage control, do not ground the external voltage terminal as this will create a short circuit.

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