GW Instek PSW Series USER MANUAL

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Multi-Range DC Power Supply

PSW Series

USER MANUAL

GW INSTEK PART NO. 82SW-80400ME1

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 .......................................... 15

Theory of Operation ............................. 21

OPERATION .................................................................... 33

Set Up .................................................. 35

Basic Operation ................................... 49

Parallel / Series Operation ................... 62

Test Scripts .......................................... 76

CONFIGURATION ........................................................... 84

Configuration ....................................... 85

ANALOG CONTROL ....................................................... 101

Analog Remote Control Overview ....... 102

Remote Monitoring ............................ 118

COMMUNICATION INTERFACE ..................................... 123

Interface Configuration ...................... 124

MAINTENANCE ............................................................. 135

FAQ ............................................................................... 137

APPENDIX ..................................................................... 139

Firmware Update ............................... 139

PSW Default Settings ......................... 143

Error Messages & Messages .............. 145

PSW Series User Manual

LCD Display Format ........................... 145

PSW Specifications ............................ 146

PSW Dimensions ............................... 155

Declaration of Conformity .................. 158

INDEX ............................................................................ 159

SAFETY INSTRUCTIONS

WARNING

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

CAUTION

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

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.

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.

General Guideline

CAUTION

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

leads to damaging the PSW.

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

the terminals.

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

qualified.

(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

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

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

Safety Guidelines

SAFETY INSTRUCTIONS

Cleaning the PSW

 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.

Operation Environment

 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.

Storage environment

 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

Green/ Yellow:

Earth

Blue:

Neutral

Brown:

Live (Phase)

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:

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 0.75mm2 should be protected by a 3A or 5A fuse. Larger 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.

GETTING STARTED

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

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

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

Accessories ................................................................................................................ 12

Package Contents ..................................................................................................... 14

Appearance ..................................................................... 15

PSW Front Panel ..................................................................................................... 15

Rear Panel ................................................................................................................. 18

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 User Manual

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 160-7.2

Type I

0~160V

0~7.2A

360W

PSW 30-72

Type II

0~30V

0~72A

720W

PSW 80-27

Type II

0~80V

0~27A

720W

PSW 160-14.4

Type II

0~160V

0~14.4A

720W

PSW 30-108

Type III

0~30V

0~108A

1080W

PSW 80-40.5

Type III

0~80V

0~40.5A

1080W

PSW 160-21.6

Type III

0~160V

0~21.6A

1080W

360 Watt models

Type I

%W10080604020

ISR

C C

DLY

ALM

RMT

C V

VSR

Function OVP/OCP Set

Output

PWR DSPLLock/LocalTest

PSW 30 -36

360W

Multi-Range DC Power Supply

Voltage

Current

720 Watt models

Type II

%W10080604020

ISR

C C

DLY

ALM

RMT

C V

VSR

Function OVP/OCP Set

Output

PWR DSPLLock/LocalTest

PSW 30 -72

720W

Voltage

Current

Multi-Range DC Power Supply

1080 Watt models

Type III

%W10080604020

ISR

C C

DLY

ALM

RMT

C V

VSR

Function OVP/OCP Set

Output

PWR DSPLLock/LocalTest

PSW 30 -108

1080W

Voltage

Current

Multi-Range DC Power Supply

PSW Series Overview

Series lineup

The PSW series consists of 9 models, divided into 3 different model types covering 3 power capacities: Type I (360 Watt), Type II (720 Watt) and Type III (1080 Watt).

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.

Main Features

Performance

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

Features

 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

Interface

 Ethernet port  Analog connector for analog voltage and current

monitoring

 USB host and device port

GETTING STARTED

Accessories

Standard Accessories

Part number

Description Region dependant

User manual

4323-30600101

Power cord (Type I/II)

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

GTL-240

USB Cable

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 Accessories

Part number

Description 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

PSW Series User Manual

GETTING STARTED

PSW-005

Series operation cable for 2 units.

PSW-006

Parallel operation cable for 2 units.

PSW-007

Parallel operation cable for 3 units.

GRA-410-J

Rack mount adapter (JIS)

GRA-410-E

Rack mount adapter (EIA)

GUG-001

GPIB to USB adapter

GTL-240

USB Cable

57RG-30B00201

Large filter (Type II/III)

Download

Name

Description

psw_cdc.inf

USB driver

PSW Series User Manual

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  L-type USB cable x1

 Power cord x1 (region

dependent)

 Analog control

protection dummy x1

 Analog control lock

lever x1

 M8 terminal bolts,

nuts and washers X2

Package Contents

Check the contents before using the PSW.

GETTING STARTED

%W10080604020

ISR

C C

DLY

ALM

RMT

C V

VSR

Function OVP/OCP Set

Output

PWR DSPLLock/LocalTest

PSW 30 -72

720W

Voltage

Current

Multi-Range DC Power Supply

Current knob

Output key

Power switch

Voltage knob

USB A port

Display

Cover panel

Function keys

PSW 160-21.6, PSW 80-40.5, PSW 30-108 (1080W)

PSW 160-7.2, PSW 80-13.5, PSW 30-36 (360W)

%W10080604020

ISR

C C

DLY

ALM

RMT

C V

VSR

Function OVP/OCP Set

Output

PWR DSPLLock/LocalTest

PSW 30- 108

1080W

Voltage

Current

Multi-Range DC Power Supply

%W10080604020

ISR

C C

DLY

ALM

RMT

C V

VSR

Function OVP/OCP Set

Output

PWR DSPLLock/LocalTest

PSW 30- 36

360W

Multi-Range DC Power Supply

Voltage

Current

Appearance

PSW Front Panel

PSW 160-14.4, PSW 80-27, PSW 30-72 (720W)

PSW Series User Manual

Function Keys

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

Function

The Function key is used to configure the power supply.

OVP/OCP

Set the over current or over voltage protection levels.

Set

Sets the current and voltage limits.

Test

Used to run customized scripts for testing.

Lock/Local

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

PWR DSPL

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

Display Indicators

VSR

Voltage Slew Rate

C V

Constant Voltage Mode

RMT

Remote Control Mode

ALM

Alarm on

DLY

Delay Output

C C

Constant Current Mode

ISR

Current Slew Rate

GETTING STARTED

20 40 60

80 100 % W

Power bar Indicates the current power output

as a percentage.

Voltage Knob

Voltage

Sets the voltage.

Current Knob

Current

Sets the current.

Output

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

USB

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

Power Switch

Used to turn the power on/off.

PSW Series User Manual

Output terminal (+)

Fan

Output terminal (-)

USB B port

LAN

AC Input

Senseterminal

Analog control connector

LAN

100 240V

1000VA MAX.

AC 47 63Hz

SER.NO. LABEL

Sense+ terminal

PSW 160-21.6, PSW 80-40.5, PSW 30-108 (1080W)

PSW 160-7.2, PSW 80-13.5, PSW 30-36 (360W)

100 240VAC

1500VA MAX.

47 63Hz

LAN

SER.NO. LABEL

AC Input

LAN

100 240V

47 63Hz 500VA MAX.

Rear Panel

PSW 160-14.4, PSW 80-27, PSW 30-72 (720W)

GETTING STARTED

Analog Control Connector

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.

Output Terminals

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

Chassis ground

Sense (-) and Sense (+) terminals.

USB B port

The USB B port is used for remote control.

Fans

Temperature controlled fans

Ethernet Port

LAN

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

Line Voltage Input

(Type I/TypeII)

Type I: PSW 30-36/80-13.5/160-7.2

Type II: PSW 30-72/80-27/160-14.4

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

(Automatically switchable)

PSW Series User Manual

Line Voltage Input

(Type III)

Type III: PSW 30-108/80-40.5/160-21.6

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

(Automatically switchable)

GETTING STARTED

Background

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.

Voltage

Current

360W rated power

12 36

PSW 30-36 Operating Area

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

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

PSW Series User Manual

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 160V Series Operating Area

160

Current (A)

Voltage (V)

140

180

Type III

Type II

Type I

100

120

2.25 4.5 6.75

160

14.4 21.67.2

PSW 80V Series Operating Area

Current (A)

Voltage (V)

26.6

4.5 9.0 13.5

Type III

Type II

Type I

40205

27 40.5

GETTING STARTED

PSW 30V Series Operating Area

Current (A)

Voltage (V)

0 20

100

12 24 36

120

Type III

Type II

Type I

72 108

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

SET

) can no longer be sustained 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

SET

), the set voltage

CC and CV Mode

PSW Series User Manual

SET

), the load resistance (RL) and the critical resistance (RC). The critical resistance is determined by V

SET/ISET

. The power supply 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

SET

voltage but the current will be

less than I

SET

. If the load resistance is reduced to the point that the current output reaches the I

SET

level, the power supply switches to CC

mode.

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

SET

and the voltage output is

less than V

SET

RL=R

RL<R

VSET

ISET

RL>R

Crossover

point

Slew Rate

Theory

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

Background

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

PSW

Load

Bleed

resistor

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

Bleeder Control

PSW Series User Manual

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

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.

Background

On the PSW, the internal resistance of the power supply can be user-defined in software. (Internal Resistance Setting, page 89). 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.

Internal Resistance Range

Unit Model

Internal Resistance Range

PSW 30-36

0.000 ~ 0.833Ω

PSW 30-72

0.000 ~ 0.417Ω

PSW 30-108

0.000 ~ 0.278Ω

PSW 80-13.5

0.000 ~ 5.926Ω

PSW 80-27

0.000 ~ 2.963Ω

PSW 80-40.5

0.000 ~ 1.975Ω

PSW 160-7.2

0.000 ~ 22.222Ω

PSW 160-14.4

0.000 ~ 11.111Ω

PSW 160-21.6

0.000 ~ 7.407Ω

Internal Resistance

GETTING STARTED

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.

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 49.

PSW Series User Manual

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.

Caution

Allow at least 15 seconds between cycling the power. Cycling the power on and off quickly can cause the inrush current limiting circuit to fail as well as reduce the working life of the input fuse and power switch.

Pulsed or Peaked loads

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.

Considerations

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

GETTING STARTED

Current limit

level

Measured

Ammeter

current

Reverse Current: Regenerative load

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 Load

Resistor

Reverse current

Note

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.

PSW Series User Manual

Reverse Current: Accumulative energy.

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.

PSW Load

Diode

CAUTION

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

Floating

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.

PSW

Load

Ext-V Ext-R

Analog

connector

( ) Insulation capacity ≥ isolation voltage

of power supply

WARNING

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.

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.

PSW Series User Manual

Grounded output terminal

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.

PSW

Load

Ext-V Ext-R

Analog

connector

( ) Insulation capacity ≥ voltage of power

supply with respect to ground

CAUTION

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

OPERATION

Set Up ............................................................................. 35

Line Voltage Connection – Type III Models ....................................................... 35

Filter Installation ...................................................................................................... 37

Power Up .................................................................................................................. 38

Wire Gauge Considerations .................................................................................... 39

Output Terminals .................................................................................................... 40

Using the Output Terminal Cover ........................................................................ 42

Using the Rack Mount Kit...................................................................................... 43

How to Use the Instrument ................................................................................... 43

Reset to Factory Default Settings .......................................................................... 45

View System Version and Build Date ................................................................... 46

Basic Operation .............................................................. 49

Setting OVP/OCP Levels ...................................................................................... 49

Set to C.V. Mode ..................................................................................................... 51

Set to C.C. Mode ...................................................................................................... 54

Display Modes .......................................................................................................... 57

Panel Lock ................................................................................................................ 58

Remote Sense ........................................................................................................... 59

Parallel / Series Operation .............................................. 62

Master-Slave Parallel Overview .............................................................................. 63

Master-Slave Parallel Connection .......................................................................... 65

Master-Slave Parallel Operation ............................................................................. 68

Master-Slave Series Overview ................................................................................ 70

Master-Slave Series Connection ............................................................................. 72

Master-Slave Series Operation ............................................................................... 74

Test Scripts ..................................................................... 76

Test Script File Format ........................................................................................... 77

Test Script Settings .................................................................................................. 77

Setting the Test Script Settings .............................................................................. 78

Load Test Script from USB .................................................................................... 79

OPERATION

PSW Series User Manual

Run Test Script ........................................................................................................ 80

Export Test Script to USB ..................................................................................... 81

Remove Test Script ................................................................................................. 82

OPERATION

Background

The Type III (PSW 30-108/PSW 80-40.5/PSW 160-21.6) models use a universal power input that can be used with 100 and 200 VAC systems. To connect or replace the power cord (GW Instek part number: 4320-91001101, use the procedure below:

Warning

The following procedure should only be attempted by competent persons.

Ensure the AC power cord is not connected to power.

Removal

1. Turn off the power switch.

2. Unscrew the power cord

protective sheath.

3. Remove the 2 screws

holding the power cord cover and remove.

Set Up

Line Voltage Connection – Type III Models

PSW Series User Manual

4. Slide the cover off the AC

terminals.

5. Remove the AC power

cord wires.

Installation

1. Connect the AC power

cord wires to the AC input terminals.

 White/Blue  Neutral

(N)

 Green/Green-

yellowGND ( )

 Black/Brown  Line

(L)

Line

Neutral

Ground

2. Set the cover back over the

AC terminals.

3. Re-install the power cord

cover.

4. Screw the power cord

sheath back onto the cover.

OPERATION

Background

The PSW has a small filter (GW Instek part number, 57RG-30B00101) that must first be inserted under the control panel before operation. The small filter must be inserted for all model types (Type I/II/II).

Steps

1. Insert the small filter

in the open area under the control panel.

Type II shown as an example

2. The unit is now ready to power up.

Filter Installation

Power Up

Steps

1. Type I or II: Connect the

power cord to the rear panel socket.

Type III: Connect the power cord to the universal power input.

Page 35

2. Press the POWER key. If used for the first time,

the default settings will appear on the display, otherwise The PSW recovers the state right before the power was last turned OFF.

For default configuration settings, see page 139.

CAUTION

The power supply takes around 8 seconds to fully turn on and shutdown.

Do not turn the power on and off quickly. Please wait for the display to fully turn off.

PSW Series User Manual

OPERATION

Background

Before connecting the output terminals to a load, the wire gauge of the cables should be considered.

It is essential that the current capacity of the load cables is adequate. The rating of the cables must equal or exceed the maximum current rated output of the instrument.

Recommended wire gauge

Wire Gauge

Maximum Current

2.5A

4A 16

6A 14

10A 12

16A

21A

8 36A 6

61A 4

97A

Wire Gauge Considerations

PSW Series User Manual

Background

Before connecting the output terminals to the load, first consider whether voltage sense will be used, the gauge of the cable wiring and the withstand voltage of the cables and load.

The output terminals can be connected to load cables using M4 sized screws or M8 sized bolts.

WARNING

Dangerous voltages. Ensure that the power to the instrument is disabled before handling the power supply output terminals. Failing to do so may lead to electric shock.

Steps

1. Turn the power switch off.

2. Remove the output terminal cover.

Page 42

3. If necessary, screw the chassis

ground terminal to either the positive or negative terminal. See the grounding chapter for details.

Page 31

Sense joining plates

Ground

4. Choose a suitable wire gauge for

the load cables.

Page 39

Output Terminals

OPERATION

5. Choose a suitable crimp for the terminals.

6. If using voltage sense, remove the

sense terminal joining plates and connect sensing wires to the load(s).

Page 59

7. Connect the positive load cable to the positive

output terminal and the negative cable to the negative output terminal.

8. Reattach the output terminal

cover.

Page 42

Connection without sense wiring

Using M4 screws

Positive

potential

Negative potential

Using M8 bolts

Positive

potential

Negative potential

Connection with sense wiring

Using M4 screws

Sense -

Sense +

Using M8 bolts

Sense -

Sense +

PSW Series User Manual

Steps

1. Remove the screw holding the top cover to the

bottom cover.

2. Line-up the bottom cover with the notches in

the output terminals.

3. Place the top terminal cover over the bottom

cover.

Details

4. Use your thumb to slide the terminal covers

shut, as shown in the diagram below.

5. When the top and bottom covers are flush, re-

insert the screw that was removed in step 1.

Using the Output Terminal Cover

OPERATION

Removal

Reverse the procedure to remove the terminal covers.

Background

The PSW series has an optional Rack Mount Kit (GW Instek part number: [JIS] GRA-410-J, [EIA] GRA-410-E[EIA]) that can be used to hold 6x PSW Type I models, 3x Type II models, 2x Type III models or a combination of all models (1x Type I, 1x Type II and 1x Type III).

Rack mount diagram

Type I Type II Type III

Background

The PSW power supplies use a novel method of configuring parameter values only using the voltage or current knobs. The knobs are used to quickly edit parameter values at 0.01, 0.1 or 1 unit steps at a time.

When the user manual says to set a value or parameter, use the steps below.

Example

Use the voltage knob to set a voltage of 10.05 volts.

Using the Rack Mount Kit

How to Use the Instrument

PSW Series User Manual

1. Repeatedly press the voltage knob

until the last digit is highlighted. This will allow the voltage to be edited in 0.01 volt steps.

2. Turn the voltage knob till 0.05

volts is shown.

Voltage

→

3. Repeatedly press the voltage knob until the

first digit is highlighted. This will allow the voltage to be edited in 1 volt steps.

4. Turn the voltage knob until 10.05 is shown.

→

Note

Notice the Set key becomes illuminated when setting the current or voltage.

If the voltage or current knobs are unresponsive, press the Set key first.

OPERATION

Background

The F-88 configuration setting allows the PSW to be reset back to the factory default settings. See page 139 for the default factory settings.

Steps

1. Press the Function key. The

Function key will light up.

Function

2. The display should show F-

01 on the top and the configuration setting for F-01 on the bottom.

3. Rotate the voltage knob to change

the F setting to F-88 (Factory Set Value).

Voltage

4. Use the current knob to set the

F-88 setting to 1 (Return to factory settings).

Current

5. Press the Voltage knob to confirm.

ConF will be displayed when successful.

Voltage

6. Press the Function key again to

exit. The function key light will turn off.

Function

Reset to Factory Default Settings

PSW Series User Manual

Background

The F-89 configuration setting allows you to view the PSW version number, build date, keyboard version, analog-control version, kernel build, test command version and test command build date.

Steps

1. Press the Function key. The

Function key will light up.

Function

2. The display should show F-

01 on the top and the configuration setting for F-01 on the bottom.

3. Rotate the voltage knob to change

the F setting to F-89 (Show Version).

Voltage

4. Rotate the current knob to view

the version and build date for the various items.

Current

View System Version and Build Date

OPERATION

F-89

0-XX: PSW Main Program Version 1-XX: PSW Main Program Version 2-XX: PSW Main Program Build OnYear. 3-XX: PSW Main Program Build OnYear. 4-XX: PSW Main Program Build OnMonth. 5-XX: PSW Main Program Build OnDay. 6-XX: Keyboard CPLD version. 7-XX: Keyboard CPLD version. 8-XX: Analog CPLD version. 9-XX: Analog CPLD version. A-XX: Reserved. B-XX: Reserved. C-XX: Kernel Build On-Year. D-XX: Kernel Build On-Year. E -XX: Kernel Build On-Month. F-XX: Kernel Build On-Day. G-XX: Test Command Version. H-XX: Test Command Version. I-XX: Test Command Build On-Year. J-XX: Test Command Build On-Year. K-XX: Test Command Build On-Month. L-XX: Test Command Build On-Day.

5. Press the Function key again to

exit. The function key light will turn off.

Function

Example

Main Program Version: V01.09, 2011/08-01

0-01: PSW Main Program Version 1-09: PSW Main Program Version 2-20: PSW Main Program Build On-Year. 3-11: PSW Main Program Build On-Year. 4-08: PSW Main Program Build On-Month. 5-01: PSW Main Program Build On-Day.

PSW Series User Manual

Example

Keyboard CPLD Version: 0x030c

6-03: Keyboard CPLD Version. 7-0c: Keyboard CPLD Version.

Example

Analog CPLD Version: 0x0421

8-04: Analog CPLD Version. 9-21: Analog CPLD Version.

Example

Kernel Version: 2011/05/22

C-20: Kernel Build On-Year. D-11: Kernel Build On-Year. E-05: Kernel Build On-Month. F-22: Kernel Build On-Day.

Example

Test Command Version: V01:00, 2011/07/25

G-01: Test Command Version. H-00: Test Command Version. I-20: Test Command Build On-Year. J-11: Test Command Build On-Year. K-07: Test Command Build On-Month. L-25: Test Command Build On-Day.

OPERATION

The OVP level has a selectable range of 10% to 110% of the rated output voltage. The OCP level has a selectable range 10%~ 110% of the rated output current, alternatively the OCP level can also be turned off. The OVP and OCP level is set to 110% by default.

When one of the protection measures are on, ALM is shown on the panel display. By default, the power switch will turn off when any of the protection levels are tripped.

ALM

Basic Operation

This section describes the basic operations required to operate the power supply.

 Setting OVP/OCP → from page 49  C.V. mode → from page 51  C.C. mode → from page 54  Display modes → page 57  Panel lock → page 58  Remote sensing → from page 59

Before operating the power supply, please see the Getting Started chapter, page 9.

Setting OVP/OCP Levels

PSW Series User Manual

Before setting the OVP or OCP level:

 Ensure the load is not connected.  Ensure the output is set to off.

Steps

1. Press the OVP/OCP key. The

OVP/OCP key lights up.

OVP/OCP

2. The OVP setting will be displayed on the top

and the OCP setting (or OFF) will be displayed on the bottom.

OVP Setting

OCP Setting

OVP Level

3. Use the voltage knob to set the

OVP level.

Voltage

Range

10%~110% of rated output voltage.

OCP Level

4. Use the current knob to set the

OCP level.

Current

Range

10%~110% of rated output current, OFF.

5. Press OVP/OCP again to exit. The

OVP/OCP indicator will turn off.

OVP/OCP

Power switch trip

Set F-95 (Power switch trip) to 1 (to disable the power switch trip) or to 0 (to enable the power switch trip) and save.

Page 99

F-95

1 (Disable) or 0 (Enable)

OPERATION

Clear OVP/OCP protection

The OVP or OCP protection can be cleared after it has been tripped by holding the OVP/OCP button for 2 seconds. (Only applicable when the power switch trip setting is disabled [F-95 = 1])

OVP/OCP

(hold)

Background

Before setting the power supply to C.V. mode, ensure:

 The output is off.  The load is connected.

Steps

1. Press the Function key. The

Function key will light up.

Function

2. The display should show F-

01 on the top and the configuration setting for F-01 on the bottom.

3. Rotate the voltage knob to change

the F setting to F-03 (V-I Mode Slew Rate Select).

Voltage

Set to C.V. Mode

When setting the power supply to constant voltage mode, a current limit must also be set to determine the crossover point. When the current exceeds the crossover point, the mode switches to C.C. mode. For details about C.V. operation, see page 21. C.C. and C.V. mode have two selectable slew rates: High Speed Priority and Slew Rate Priority. High Speed Priority will use the fastest slew rate for the instrument while Slew Rate Priority will use a user-configured slew rate.

PSW Series User Manual

4. Use the current knob to set the F-03

setting.

Set F-03 to 0 (CV High Speed Priority) or 2 (CV Slew Rate Priority).

Current

F-03

0 = CV High Speed Priority 2 = CV Slew Rate Priority

5. Press the Voltage knob to save the

configuration setting. ConF will be displayed when successful.

Voltage

6. If CV Slew Rate Priority was chosen as the

operating mode, repeat steps 3~5 to set F-04 (Rising Voltage Slew Rate) and the F-05 (Falling Voltage Slew Rate) and save.

F-04 / F-05

0.1V/s~60V/s (PSW 30-XX)

0.1V/s~160V/s (PSW 80-XX)

0.1V/s~320V/s (PSW160-XX)

7. Press the Function key again to exit

the configuration settings. The function key light will turn off.

Function

8. Use the Current knob to set the

current limit (crossover point).

Current

OPERATION

9. Use the Voltage knob to set the

voltage.

Voltage

Note

Notice the Set key becomes illuminated when setting the current or voltage. If the voltage or current knobs are unresponsive, press the Set key first.

10. Press the Output key. The Output

key becomes illuminated.

Output

C V

% W

CV and the Power Bar

will become illuminated

(top left & center)

20 40 60 80 100 % W

Note

Only the voltage level can be altered when the output is on. The current level can only be changed by pressing the Set key.

For more information on the Normal Function Settings (F-00 ~ F-61, F-88~F-89) see page 89.

PSW Series User Manual

Background

Before setting the power supply to C.C. mode, ensure:

 The output is off.  The load is connected.

Steps

1. Press the Function key. The

Function key will light up.

Function

2. The display should show F-

01 on the top and the configuration setting for F-01 on the bottom.

3. Rotate the voltage knob to change

the F setting to F-03 (V-I Mode Slew Rate Select).

Voltage

4. Use the current knob to set the F-03

setting.

Set F-03 to 1 (CC High Speed Priority) or 3 (CC Slew Rate Priority) and save.

Current

Set to C.C. Mode

When setting the power supply to constant current mode, a voltage limit must also be set to determine the crossover point. When the voltage exceeds the crossover point, the mode switches to C.V. mode. For details about C.C. operation, see page 21. C.C. and C.V. mode have two selectable slew rates: High Speed Priority and Slew Rate Priority. High Speed Priority will use the fastest slew rate for the instrument while Slew Rate Priority will use a user-configured slew rate.

OPERATION

F-03

1 = CC High Speed Priority 3 = CC Slew Rate Priority

5. Press the Voltage knob to save the

configuration setting. ConF will be displayed when successful.

Voltage

6. If CC Slew Rate Priority was chosen as the

operating mode, set F-06 (Rising Current Slew Rate) and F-07 (Falling Current Slew Rate) and save.

F-06 / F-07

0.01A/s~72.00A/s (PSW 30-36)

0.01A/s~144.0A/s (PSW 30-72)

0.01A/s~216.0A/s (PSW 30-108)

0.01A/s~27.00A/s (PSW 80-13.5)

0.01A/s~54.00A/s (PSW 80-27)

0.01A/s~81.00A/s (PSW 80-40.5)

0.01A/s~14.40A/s (PSW 160-7.2)

0.01A/s~28.80A/s (PSW 160-14.4)

0.01A/s~43.20A/s (PSW 160-21.6)

7. Press the Function key again to exit

the configuration settings. The function key light will turn off.

Function

8. Use the Voltage knob to set the

voltage limit (crossover point).

Voltage

PSW Series User Manual

9. Use the Current knob to set the

current.

Current

Note

Notice the Set key becomes illuminated when setting the current or voltage. If the voltage or current knobs are unresponsive, press the Set key first.

10. Press the Output key. The Output

key becomes illuminated.

Output

% W

C C

% W

20 40 60 80 100

CC and the Power Bar

will become illuminated

(bottom left & center)

Note

Only the current level can be altered when the output is on. The voltage level can only be changed by pressing the Set key.

For more information on the Normal Function Settings (F-00 ~ F-61, F-88~F-89) see page 89.

OPERATION

Steps

1. Press the PWR/DSPL key. The

PWR DSPL key lights up.

PWR DSPL

2. The display changes to voltage and power

(V/W).

3. To switch between displaying A/W and V/W,

simply press the corresponding voltage or current knob.

For example: when in A/W mode, press the voltage knob to display V/W. Conversely when in V/W mode, press the current knob to display A/W.

VWV

Voltage

Current

 When V/W is displayed, the voltage knob

can still be used to change the voltage level.

 When A/W is displayed, the current knob

can still be used to change the current level.

Exit

Press the PWR/DSPL key again to return to normal display mode. The PWR DSPL light will turn off.

PWR DSPL

Display Modes

The PSW power supplies allow you to view the output in three different modes: voltage and current, voltage and power or current and power.

PSW Series User Manual

Activate the panel lock

Press the Lock/Local key to active the panel lock. The key will become illuminated.

Lock/Local

Disable the panel lock

Hold the Lock/Local key for ~3 seconds to disable the panel lock. The Lock/Local light turns off.

Lock/Local

Panel Lock

The panel lock feature prevents settings from being changed accidentally. When activated, the Lock/Local key will become illuminated and all keys and knobs except the Lock/Local key and Output key (if active) will be disabled.

If the instrument is remotely controlled via the USB/LAN interface, the panel lock is automatically enabled.

OPERATION

WARNING

Ensure the output is off before connecting any sense cables.

Use sense cables with a voltage rating exceeding the isolation voltage of the power supply.

Never connect sensing cables when the output is on. Electric shock or damage to the power supply could result.

Note

Be sure to remove the Sense joining plates so the units are not using local sensing.

Single Load

1. Connect the Sense+ terminal to the positive

potential of the load. Connect the Senseterminal to the negative potential of the load.

Output

Sense

PSW

Output

Load Input Input

Page 40

2. Operate the instrument as normal.

See the Basic Operation chapter for details.

Page 45

Remote Sense

Remote sense is used to compensate for the voltage drop seen across load cables due to the resistance inherent in the load cables. The remote sense terminals are connected to the load terminals to determine the voltage drop across the load cables.

Remote sense can compensate up to 0.6 volts (compensation voltage). Load cables should be chosen with a voltage drop less than the compensation voltage.

PSW Series User Manual

Parallel PSW Units

1. Connect the Sense+ terminals to the positive

potential of the load. Connect the Senseterminals to the negative potential of the load.

Output

Sense

PSW #2

Output

Sense

PSW #1

Output

Load Input Input

Page 40

2. Operate the instrument as normal.

See the Parallel Operation chapter for details.

Page 63

Serial PSW Units

1. a. Connect the 1

Sense+ terminal to the

positive potential of the load.

b. Connect the 1st Sense- terminal to the positive output terminal of the second PSW unit.

c. Connect the 2nd Sense+ terminal to the positive terminal of the second PSW unit.

d. Connect the 2nd Sense- terminal to negative terminal of the load.

OPERATION

PSW #2

Load Input Input

Output

Sense

PSW #1

Output

Sense

Output

Page 40

2. Operate the instrument as normal.

See the Serial Operation chapter for details.

Page 70

Wire Shielding and Load line impedance

To help to minimize the oscillation due to the inductance and capacitance of the load cables, use an electrolytic capacitor in parallel with the load terminals.

To minimize the effect of load line impedance use twisted wire pairing.

PSW Load

s s

Twisted pair

Capacitor

PSW Series User Manual

Parallel / Series Operation

This section describes the basic operations required to operate the power supply in series or parallel. Operating the PSW series in parallel increases the total power output of the power supply units. When used in series, the total output voltage of the power supplies can be increased.

The number of the power supplies that can be connected in series or parallel depends on the model and the mode:

 Series Mode: 2 units maximum  Parallel Mode: 3 units maximum

To use the power supplies in series or parallel, units must be used in a Master-Slave configuration. In the master-slave configuration a

“master” power supply controls any other connected “slave”

power supplies.

 Master-Slave Parallel overview → from page 63  Parallel connection → from page 65  Parallel operation → from page 68  Master-Slave Series overview → page 70  Series connection → page 72  Series operation → from page 74

Before operating the power supply, please see the Getting Started chapter, page 9.

OPERATION

Background

When connecting the PSW power supplies in parallel, up to 3 units can be used in parallel and all units must be of the same model.

When the units are used in parallel, a number of precautions and limitations apply. Please read this overview before operating the power supplies in parallel.

Master

Load

Ext-V Ext-R

Slave

VMON

IMON

Slave

Limitations

Display

 Only the master unit will display the voltage

and current.

Master-Slave Parallel Overview

PSW Series User Manual

OVP/ OCP

 The master unit can shut down slave units

when OVP/OCP is tripped on the master unit (if the slave connector is wired for shut down on alarm).

 OVP/OCP can be independently tripped on

each slave unit, however the shutdown of the power or output of the unit is disabled. Only the alarm will be enabled.

Remote monitoring

 Voltage monitoring (VMON) and current

monitoring (IMON) are only supported on the master unit.

 The IMON current represents the total

current of the all the parallelized units.

Remote Sense

 Please see the remote sense chapter for

details, page 59.

External Voltage and Resistance Control

 Voltage/Resistance controlled remote

control can only be used with the master unit.

 The full scale current (in parallel) is

equivalent to the maximum external voltage or resistance.

Internal Resistance

 For 2 units in parallel, the internal resistance

is actually half of the setting value.

 For 3 units in parallel, the internal resistance

is actually a third of the setting value.

OPERATION

Bleeder Control

 The Master unit is used to control the

bleeder settings. The bleeder resistors in all the slave units are always turned off when in parallel mode.

Output Voltage/ Output Current

Model

Single unit

2 units

3 units

PSW 30-36

30V

36A

72A

108A

PSW 80-13.5

80V

13.5A

27A

40.5A

PSW 160-7.2

160V

7.2A

14.4A

21.6A

PSW 30-72

30V

72A

144A

216A

PSW 80-27

80V

80V 27A

54A

81A

PSW 160-14.4

160V

14.4A

28.8A

43.2A

PSW 30-108

30V

108A

216A

324A

PSW 80-40.5

80V

80V 40.5A

81A

121.5A

PSW 160-21.6

160V

21.6A

43.2A

64.8A

Master-Slave Connector

The Analog Control Connector is used for both serial and parallel connections. The way the connector is configured determines the behavior of the master and slave units. For the complete connector pin assignment, see page

102.

Master-Slave Parallel Connection

PSW Series User Manual

Analog Connector Connection

To operate the power supplies in parallel, connect the analog connectors on the master and slave units as shown in the diagrams below.

Master with 2 slave units:

121314

15172021

24 20 12

17 15 3 1715

312

24 20

11 1

OUTPUT ON STATUS21

Master unit

ALM STATUS20

STATUS COM17

FEEDBACK15

CURRENT_SUM_113

SHUTDOWN12

OUT ON/OFF CONT24

Slave Unit 1

12 SHUTDOWN

20 ALM STATUS

15 FEEDBACK

3 CURRENT SUM OUT

Slave Unit 2

OUT ON/OFF CONT24

12 SHUTDOWN

17 STATUS COM 17 STATUS COM

2 D COM

15 FEEDBACK

CURRENT_SUM_2 CURRENT SUM OUT314

20 ALM STATUS

11 1 1I MON CURRENT SHARE CURRENT SHARE

Master with 1 slave unit:

1315172021

24 20 12

17 15 3

OUTPUT ON STATUS21

Master unit

ALM STATUS20

STATUS COM17

FEEDBACK15

CURRENT_SUM_113

SHUTDOWN12

OUT ON/OFF CONT24

Slave Unit 1

12 SHUTDOWN

20 ALM STATUS

15 FEEDBACK

3 CURRENT SUM OUT

17 STATUS COM

2 D COM

11 1I MON CURRENT SHARE

11 1

OPERATION

Parallel Output Connection

Load

Master

unit

Slave

unit 2

Slave unit 1

Steps

1. Ensure the power is off on all power supplies.

2. Choose a master and a slave unit(s).

3. Connect the analog connectors for the master

and slave unit as shown above.

4. Remove the Output Terminal

covers and the protection dummy plug from the analog control connector.

Page 42

5. Connect the master and slave unit in parallel as

shown above.

6. Reattach the terminal covers.

Page 42

Note

Ensure the load cables have sufficient current capacity.

Page 39

Re-attach the Protection dummy plug when not in use.

PSW Series User Manual

Master-Slave Configuration

Before using the power supplies in parallel, the master and slave units need to be configured.

Steps

1. Configure the OVP and OCP

settings for the master unit.

Page 49

2. For each unit, hold the Function

key while turning the power on to enter the power on configuration settings.

%W10080604020

ISR

C C

DLY

ALM

RMT

C V

VSR

Function OVP/OCP Set

Output

PWR DSPLLock/LocalTest

PSW 30 -36

360W

Voltage

Current

Multi-Range DC Power Supply

3. Configure F-93 (Master/Slave)

setting for each master/slave unit.

Page 99 Unit

F-93

Master (with 1 slave in parallel)

Master (with 2 slaves in parallel)

Slave unit (parallel slave)

4. Cycle the power on the units (reset the power).

Note

Configuration settings can be checked for both the master and slave units by pressing the Function key and checking F-93.

Only the Master OVP and OCP level is used for over voltage and current protection. Slave OVP and OCP level is disregarded.

OTP works independently for each unit.

Master-Slave Parallel Operation

OPERATION

Master-Slave Operation

Only operate the power supplies in parallel if the units are configured correctly.

1. Turn on the master and slave units. The slave

unit(s) will show a blank display.

Master unit

Slave units

2. Operation of all units is controlled

via the master unit. Operation of the master unit is the same as for a single unit. See the Basic Operation chapter.

Page 45.

3. Press the Output key to begin.

Output

Caution

Only operate the power supplies in parallel if using units of the same model number.

Only a maximum of 3 units can be used in parallel.

Note

The panel controls are disabled on slave units, including the output key. On slave units only the Function key can be used to view the current settings.

PSW Series User Manual

Background

When connecting PSW power supplies in series, up to 2 units can be used in series and all units must be of the same model.

When the units are used in series, a number of precautions and limitations apply. Please read this overview before operating the power supplies in series.

Master

Load

Ext-V Ext-R

Slave

VMON

IMON

Limitations

Display

 Only the master unit will display the

current.

 Master and slave units display the voltage.

The total voltage is the sum of the units.

OVP/OCP

 The master unit can shut down the slave

unit when OVP/OCP is tripped on the master unit (if the slave connector is wired for shut down on alarm).

 OVP and OCP level is determined by the

master OVP and OCP level. The OVP and OCP level on the slave unit is ignored.

Master-Slave Series Overview

OPERATION

Remote monitoring

 Voltage monitoring (VMON) and current

monitoring (IMON) are only supported on the master unit.

 The VMON voltage represents the total

voltage of the all the serialized units.

Remote Sense

 Please see the remote sense chapter for

details, page 59.

External Voltage and Resistance Control

 Voltage/Resistance controlled remote

control can only be used with the master unit.

 The full scale voltage (in series) is equivalent

to the maximum external voltage or resistance.

Slew Rate

 The actual slew rate is double that of the

setting slew rate. I.e., A slew rate setting of

60.00V/s is actually 120V/s when in series.

Internal Resistance

 The internal resistance is actually twice that

of the setting value.

Bleeder Control

 The Master unit is used to control the

bleeder settings. The bleeder resistor is always turned on for the slave unit in series mode.

PSW Series User Manual

Output Voltage/ Output Current

Model

Single unit

2 units

PSW 30-36

30V

60V

36A

36A PSW 80-13.5

80V

160V

13.5

13.5A

PSW 160-7.2

160V

320V

7.2A

PSW 30-72

30V

60V

72A

PSW 80-27

80V

160V

27A

PSW 160-14.4

160V

320V

14.4A

PSW 30-108

30V

60V 108A

108A

PSW 80-40.5

80V

160V

40.5A

PSW 160-21.6

160V

320V

21.6A

Master-Slave Connector

Analog Connector Connection

To operate the power supplies in series, connect the analog connectors on the master and slave unit as shown in the diagram below.

Master-Slave Series Connection

OPERATION

172021

Master unit

A COM16

OUTPUT ON STATUS21

ALM STATUS20

STATUS COM17

SHUTDOWN12

Slave Unit 1

25 SER SLV IN

20 ALM STATUS

12 SHUTDOWN

2 D COM

24 OUT OFF/ON CONT

2 D COM

24 20 12

17 STATUS COM

Series Output Connection

Master unit

Load

Slave unit

Steps

1. Ensure the power is off on both power supplies.

2. Choose a master and slave unit.

3. Connect the analog connectors for the master

and slave unit as shown above.

4. Remove the output terminal cover

and the protection dummy plug from the analog control connector.

Page 42

5. Connect the master and slave unit in series as

shown above.

6. Reattach the terminal cover.

Page 42

Note

Ensure load cables have sufficient current capacity.

Page 39

PSW Series User Manual

Re-attach the protection dummy plug when not in use.

Master-Slave Configuration

Before using the power supplies in series, the master and slave units need to be configured.

1. Configure the OVP and OCP

settings for the master unit.

Page 49

2. For each unit, hold the Function

key while turning the power on to enter the power on configuration settings.

%W10080604020

ISR

C C

DLY

ALM

RMT

C V

VSR

Function OVP/OCP Set

Output

PWR DSPLLock/LocalTest

PSW 30 -36

360W

Voltage

Current

Multi-Range DC Power Supply

3. Configure F-93 (Master/Slave)

setting for each master/slave unit.

Page 99 Unit

F-93

Master (local or series operation)

Slave unit (series)

4. Cycle the power on the units (reset the power).

Note

Configuration settings can be checked for both the master and slave units by pressing the Function key.

Master-Slave Series Operation

OPERATION

Master-Slave Operation

Only operate the power supplies in series if the units are configured correctly.

1. Turn on the master and slave unit. The slave

unit will only show the voltage of its own unit. The master unit will show the combined voltage of both units and the current.

Master unit

Slave unit

2. Operation of all units is controlled

via the master unit. Operation of the master unit is the same as for a single unit. Please see the basic operation chapter for details.

Page 45

3. Press the Output key to begin.

Output

CAUTION

Only operate the power supplies in series if using units of the same model number.

Only a maximum of 2 units can be used in series.

Note

The panel controls are disabled on slave units, including the output key.

PSW Series User Manual

Test Scripts

This section describes how to use the Test function to run, load and save test scripts for automated testing. The Test function is useful if you want to perform a number of tests automatically. The PSW test function can store ten test scripts in memory.

Each test script is programmed in a scripting language. For more information on how to create test scripts, please contact GW Instek.

 Test Script File Format→ from page 77  Test Script Settings → from page 77  Setting the Test Script Settings → from page 78  Load Test Script → from page 79  Run Test Script → from page 80  Export Test Script → from page 81  Remove Test Script → from page 82

OPERATION

Background

The test files are saved in *.tst file format.

Each file is saved as tXXX.tst, where XXX is the save file number 001~010.

Test Run

Runs the chosen test script from the internal memory. A script must first be loaded into the internal memory before it can be run. See the test function Test Save, below.

The script will run as soon as the test function is started.

T-01

1~10

Test Load

Loads a test script from the USB drive to the designated save slot in memory. A script must first be loaded into internal memory before it can be run.

T-02

1~10 (USBPSW)

Test Export

Exports a script from the designated memory save slot to the USB drive.

T-03

1~10 (PSWUSB)

Test Remove

Deletes the chosen test file from the PSW internal memory.

T-04

1~10

Test Script File Format

Test Script Settings

PSW Series User Manual

Steps

The test script settings (T-01~T-04) are set with the Test key.

1. Press the Test key. The Test key

will light up.

Test

2. The display will show T-01 on the top and the

memory no. for T-01 on the bottom.

Test Setting

Memory

number

3. Rotate the voltage knob to change

the T setting (Test setting).

Voltage

Test Run

Test Load

Test Export

Test Remove

T-01

T-02

T-03

T-04

4. Rotate the current knob to choose a

memory number.

Current

Range

1~10

5. Press the Voltage knob to complete

the setting.

Voltage

Setting the Test Script Settings

OPERATION

Exit

Press the Test key again to exit the Test settings. The Test key light will turn off.

Test

Overview

Before a test script can be run, it must first be loaded into a one of the 10 memory save slots. Before loading a test script into memory:

 Ensure the script file is placed in the root

directory.

 Ensure the file name number corresponds to

the memory number that you wish to save to.

For example: A test file named t001.tst can only be saved to memory number 01, t002.tst can only be saved to memory number 02, and so on.

Steps

1. Insert a USB flash drive into the

front panel USB-A slot. Ensure the flash drive contains a test script in the root directory.

2. Turn on the power. MS (Mass Storage) will be

displayed on the screen after a few seconds if the USB drive is recognized.

Load Test Script from USB

PSW Series User Manual

Note

If the USB drive is not recognized, check to see that the function settings for F-20 = 1 (page 93). If not, reinsert the USB flash drive.

3. Configure T-02 (Test Load) to 1~10

(save memory slot)

Page 78

T-02 range

1~10 (t001 ~t010)

4. The script will now be available in the memory

slot the script was saved to.

Note

Error messages: If you load a file that is not

present on the USB drive “Err 002” will be

displayed on the display.

Overview

A test script can be run from one of ten memory slots.

Steps

1. Before a test script can be run, it

must first be loaded into one of the 10 memory save slots.

Page 79

2. Configure T-01 (Run Test) to 1~10

(save memory slot)

Page 78

T-01 range

1~10

3. The test script will automatically start to run.

Run Test Script

OPERATION

Note

Error messages: If you try to run a test script from an empty memory location “Err 003” will be displayed on the display.

Note

When a script starts to run, there is no way to abort the script. Pressing the Output key has no effect. If you wish to stop a test early, turn the power off.

Overview

The Export Test function saves a test file to the root directory of a USB flash drive.

 Files will be saved as tXXX.tst where XXX is

the memory number 001~010 from which the test script was exported from.

 Files of the same name on the USB flash

drive will be written over.

Steps

1. Insert a USB flash drive into the

front panel USB-A slot.

2. Turn on the power. MS (Mass Storage) will be

displayed on the screen after a few seconds if the USB drive is recognized.

Export Test Script to USB

PSW Series User Manual

Note

If the USB drive is not recognized, check to see that the function settings for F-20 = 1 (page 93). If not, reinsert the USB flash drive.

3. Configure T-03 (Test Export) to

0~10 (save memory slot)

Page 78

T-03 range

1~10

4. The script will now be copied to the USB flash

drive.

Note

Error messages: If you try to export a test script from an empty memory location “Err 003” will be displayed on the display.

Overview

The Remove Test function will delete a test script from the internal memory.

Steps

1. Select T-04 (Test Remove) and

choose which test script to remove from the internal memory.

Page 78

T-04 range

1~10

2. The test script will be removed from the

internal memory.

Remove Test Script

OPERATION

Note

Error messages: If you try to remove a test script from an empty memory location “Err 003” will be displayed on the display.

PSW Series User Manual

Configuration .................................................................. 85

Configuration Table ................................................................................................ 85

Normal Function Settings ...................................................................................... 89

USB/GPIB Settings ................................................................................................ 93

LAN Settings ............................................................................................................ 94

System Settings ......................................................................................................... 95

Power On Configuration Settings ......................................................................... 96

Calibration ................................................................................................................ 97

CONFIGURATION

Normal Function Settings

Setting

Setting Range

Output ON delay time

F-01

0.00s~99.99s

Output OFF delay time

F-02

0.00s~99.99s

V-I mode slew rate select

F-03

0 = CV high speed priority 1 = CC high speed priority 2 = CV slew rate priority 3 = CC slew rate priority

Rising voltage slew rate

F-04

0.01V/s~60.00V/s (PSW 30-XX)

0.1V/s~160.0V/s (PSW 80-XX)

0.1V/s~320.0V/s (PSW 160-XX)

Falling voltage slew rate

F-05

0.01V/s~60.00V/s (PSW 30-XX)

0.1V/s~160.0V/s (PSW 80-XX)

0.1V/s~320.0V/s (PSW 160-XX)

Configuration

Configuration of the PSW power supplies is divided into five different configuration settings: Normal Function, USB/GPIB, LAN, Power ON Configuration, Calibration Settings and System Settings. Power ON Configuration differs from the other settings in that the settings used with Power ON Configuration settings can only be set during power up. The other configuration settings can be changed when the unit is already on. This prevents some important configuration parameters from being changed inadvertently. Power On Configuration settings are numbered F-90 to F-95 and the other configuration settings are numbered F-00 to F-61 and F-88 to F-89.

Configuration Table

Please use the configuration settings listed below when applying the configuration settings.

PSW Series User Manual

Rising current slew rate

F-06

0.01A/s~72.00A/s (PSW 30-36)

0.1A/s~144.0A/s (PSW 30-72)

0.1A/s~216.0A/s (PSW 30-108)

0.01A/s~27.00A/s (PSW 80-13.5)

0.01A/s~54.00A/s (PSW 80-27)

0.01A/s~81.00A/s (PSW 80-40.5)

0.01A/s~14.40A/s (PSW 160-7.2)

0.01A/s~28.80A/s (PSW 160-14.4)

0.01A/s~43.20A/s (PSW 160-21.6)

Falling current slew rate

F-07

0.01A/s~72.00A/s (PSW 30-36)

0.1A/s~144.0A/s (PSW 30-72)

0.1A/s~216.0A/s (PSW 30-108)

0.01A/s~27.00A/s (PSW 80-13.5)

0.01A/s~54.00A/s (PSW 80-27)

0.01A/s~81.00A/s (PSW 80-40.5)

0.01A/s~14.40A/s (PSW 160-7.2)

0.01A/s~28.80A/s (PSW 160-14.4)

0.01A/s~43.20A/s (PSW 160-21.6)

Internal resistance setting

F-08

0.000Ω~0.833Ω (PSW 30-36)

0.000Ω~0.417Ω (PSW 30-72)

0.000Ω~0.278Ω (PSW 30-108)

0.000Ω~5.926Ω (PSW 80-13.5)

0.000Ω~2.963Ω (PSW 80-27)

0.000Ω~1.975Ω (PSW 80-40.5)

0.000Ω~22.222Ω (PSW 160-7.2)

0.000Ω~11.111Ω (PSW 160-14.4)

0.000Ω~7.407Ω (PSW 160-21.6)

Bleeder circuit control

F-09

0 = OFF, 1 = ON

Buzzer ON/OFF control

F-10

0 = ON, 1 = OFF

USB/GPIB settings

Front panel USB State

F-20

0 = Absent, 1 = Mass Storage

Rear panel USB State

F-21

0 = Absent, 2 = USB-CDC, 3 = GPIBUSB adapter

Rear panel USB mode

F-22

0 = Disable, 1 = GPIB-USB adapter, 2 = USB CDC, USB CDC Full Speed Only

GPIB address

F-23

0~30

LAN settings

MAC Address-1

F-30

0x00~0xFF

MAC Address-2

F-31

0x00~0xFF

CONFIGURATION

MAC Address-3

F-32

0x00~0xFF

MAC Address-4

F-33

0x00~0xFF

MAC Address-5

F-34

0x00~0xFF

MAC Address-6

F-35

0x00~0xFF

LAN

F-36

0 = Disable, 1 = Enable

DHCP

F-37

0 = Disable, 1 = Enable

IP Address-1

F-39

0~255

IP Address-2

F-40

0~255

IP Address-3

F-41

0~255

IP Address-4

F-42

0~255

Subnet Mask-1

F-43

0~255

Subnet Mask-2

F-44

0~255

Subnet Mask-3

F-45

0~255

Subnet Mask-4

F-46

0~255

Gateway-1

F-47

0~255

Gateway-2

F-48

0~255

Gateway-3

F-49

0~255

Gateway-4

F-50

0~255

DNS address -1

F-51

0~255

DNS address -2

F-52

0~255

DNS address-3

F-53

0~255

DNS address-4

F-54

0~255

Sockets active

F-57

0 = Disable, 1 = Enable

Web Server active

F-59

0 = Disable, 1 = Enable

Web password active

F-60

0 = Disable, 1 = Enable

Web setting password

F-61

0000~9999

System Settings

Factory Set Value

F-88

0 = Disable 1 = Return to factory settings

PSW Series User Manual

Show Version

F-89

0, 1 = PSW version 2, 3 = PSW build year 4, 5 = PSW build month/day 6, 7 = Keyboard CPLD version 8, 9 = Analog-Control CPLD version A, B = Reserved C, D = Kernel build year E, F = Kernel build month/day G, H = Test command version I, J = Test command build year K, L = Test command build month/day

Power On Configuration Settings*

CV Control

F-90

0 = Panel control (local) 1 = External voltage control 2 = External resistance control

(Ext-R 10kΩ = Vo, max)

3 = External resistance control

(Ext-R 10kΩ = 0)

CC Control

F-91

0 = Panel control (local) 1 = External voltage control 2 = External resistance control

(Ext-R 10kΩ = Io,max)

3 = External resistance control

(Ext-R 10kΩ = 0)

Power-ON Output

F-92

0 = OFF at startup, 1 = On at startup

Master/Slave

F-93

0 = Master/Local 1 = Master/Parallel1 2 = Master/Parallel2 3 = Slave/Parallel 4 = Slave/Series

External Out Logic

F-94

0 = High ON, 1 = Low ON

Power Switch trip

F-95

0 = Enable , 1 = Disable

Calibration Settings*

Calibration

F-00

0000 ~ 9999

*Note

Power On and Calibration settings can only be set during power up.

CONFIGURATION

Output ON Delay Time

Delays turning the output on for a designated amount of time. The Delay indicator will light when the Delay time is not 0.

Note: The Output ON Delay Time setting has a maximum deviation (error) of 20ms.

The Output ON Delay Time setting is disabled when the output is set to external control.

DLY

F-01

0.00s~99.99s

Output OFF Delay Time

Delays turning the output off for a designated amount of time. The Delay indicator will light when the Delay time is not 0.

Note: The Output OFF Delay Time setting has a maximum deviation (error) of 20ms.

The Output OFF Delay Time setting is disabled when the output is set to external control.

DLY

F-02

0.00s~99.99s

Normal Function Settings

PSW Series User Manual

V-I Mode

Selects High Speed Priority or Slew Rate Priority for CV or CC mode. The voltage or current slew rate can only be edited if CC/CV Slew Rate Priority is selected. The ISR indicator will be lit for CC Slew Rate Priority and the VSR indicator will be lit for CV Slew Rate Priority.

Note: CC and CV Slew Rate Priority mode are disabled when voltage/current output is set to external control.

ISR

CC Slew Rate priority

VSR

CV Slew Rate priority

F-03

0 = CV high speed priority 1 = CC high speed priority 2 = CV slew rate priority 3 = CC slew rate priority

Rising Voltage Slew Rate

Sets the rising voltage slew rate. Only applicable if V-I Mode is set to CV Slew Rate Priority.

F-04

0.01V/s~60V/s (PSW 30-XX)

0.1V/s~160V/s (PSW 80-XX)

0.1V/s~320V/s (PSW 160-XX)

Falling Voltage Slew Rate

Sets the falling voltage slew rate. Only applicable if V-I Mode is set to CV Slew Rate Priority.

F-05

0.01V/s~60V/s (PSW 30-XX)

0.1V/s~160V/s (PSW 80-XX)

0.1V/s~320V/s (PSW 160-XX)

CONFIGURATION

Rising Current Slew Rate

Sets the rising current slew rate. Only applicable if V-I Mode is set to CC Slew Rate Priority.

F-06

0.01A/s~72.00A/s (PSW 30-36)

0.1A/s~144.0A/s (PSW 30-72)

0.1A/s~216.0A/s (PSW 30-108)

0.01A/s~27.00A/s (PSW 80-13.5)

0.01A/s~54.00A/s (PSW 80-27)

0.01A/s~81.00A/s (PSW 80-40.5)

0.01A/s~14.40A/s (PSW 160-7.2)

0.01A/s~28.80A/s (PSW 160-14.4)

0.01A/s~43.20A/s (PSW 160-21.6)

Falling Current Slew Rate

Sets the falling current slew rate. Only applicable if V-I Mode is set to CC Slew Rate Priority.

F-07

0.01A/s~72.00A/s (PSW 30-36)

0.1A/s~144.0A/s (PSW 30-72)

0.1A/s~216.0A/s (PSW 30-108)

0.01A/s~27.00A/s (PSW 80-13.5)

0.01A/s~54.00A/s (PSW 80-27)

0.01A/s~81.00A/s (PSW 80-40.5)

0.01A/s~14.40A/s (PSW 160-7.2)

0.01A/s~28.80A/s (PSW 160-14.4)

0.01A/s~43.20A/s (PSW 160-21.6)

Internal Resistance Settings

Sets the internal resistance of the power supply.

F-08

0.000Ω ~0.833Ω (PSW 30-36)

0.000Ω ~0.417Ω (PSW 30-72)

0.000Ω ~0.278Ω (PSW 30-108)

0.000Ω ~5.926Ω (PSW 80-13.5)

0.000Ω ~2.963Ω (PSW 80-27)

0.000Ω ~1.975Ω (PSW 80-40.5)

0.000Ω ~22.222Ω (PSW 160-7.2)

0.000Ω ~11.111Ω (PSW 160-14.4)

0.000Ω ~7.407Ω (PSW 160-21.6)

PSW Series User Manual

Bleeder Control

Bleeder control turns ON/OFF the bleeder resistor. Bleeder resistors discharge the filter capacitors after power is turned off as a safety measure.

F-09

0 = OFF, 1 = ON

Buzzer ON/OFF

Turns the buzzer sound on or off. The buzzer is associated with alarm sounds and keypad entry sounds.

F-10

0 = ON, 1 = OFF

CONFIGURATION

Front Panel USB State

Displays the front panel USB-A port state. This setting is not configurable.

F-20

0 = Absent, 1 = Mass Storage

Rear Panel USB State

Displays the rear panel USB-B port state. This setting is not configurable.

F-21

0 = Absent, 2 = USB-CDC, 3 = GPIB-USB adapter

Rear Panel USB Mode

Sets the rear panel USB mode.

Note: Option #3, USB CDC Full Speed Only, can be used to reduce the data transmission speed when there are sources of interference in the operating environment. This option is only available for firmware version 1.42 and above.

F-22

0 = Disable, 1 = GPIB-USB adapter (for GUG-001), 2 = USB CDC. 3 = USB CDC Full Speed Only

GPIB Address

Sets the GPIB address.

F-23

0~30

USB/GPIB Settings

LAN Settings

MAC Address1~6

Displays the MAC address 1~6. This setting is not configurable.

F-30~F-35

0x00~0xFF

LAN

Turns Ethernet on or off.

F-36

0 = Disable, 1 = Enable

DHCP

Turns DHCP on or off.

F-37

0 = Disable, 1 = Enable

IP Address-1~4

Sets the default IP address. IP address 1~4 splits the IP address into four sections.

(F-39 : F-40 : F-41 : F-42) (0~255 : 0~255 : 0~255 : 0~255)

Subnet Mask 1~4

Sets the subnet mask. The subnet mask is split into four parts.

(F-43 : F-44 : F-45: F-46) (0~255 : 0~255 : 0~255 : 0~255)

Gateway 1~4

Sets the gateway address. The gateway address is split into 4 parts.

(F-47 : F-48 : F-49 : F-50) (0~255 : 0~255 : 0~255 : 0~255)

DNS Address 1~4

Sets the DNS address. The DNS address is split into 4 parts.

(F-51 : F-52 : F-53 : F-54) (0~255 : 0~255 : 0~255 : 0~255)

Sockets active

Enables WebSocket connections.

F-57

0 = Disable, 1 = Enable

Web server active

Turns Web server control on/off.

F-59

0 = Disable, 1 = Enable

PSW Series User Manual

CONFIGURATION

Web Password active

Turns a web password on/off.

F-60

0 = Disable, 1 = Enable

Web Password

Sets the Web password.

F-61

0000 ~ 9999

Factory Set Value

Returns the PSW to the factory default settings. See page 139 for a list of the default settings.

F-88

0 = Disable, 1 = Return to factory default settings.

Show Version

Displays the PSW version number, build date, keyboard version, analog-control version, kernel build, test command version and test command build date.

F-89

System Settings

PSW Series User Manual

CV Control

Sets the constant voltage (CV) control mode between local and external voltage/resistance control. For external voltage control, see page 104 (External Voltage Control of Voltage Output) and page 109 (External Resistance Control of Voltage Output).

F-90

0= Panel control (local) 1 = External voltage control 2 = External resistance control (Ext-R 10kΩ = Vo,max) 3 = External resistance control

(Ext-R 10kΩ = 0)

CC Control

Sets the constant current (CC) control mode between local and external voltage/resistance control. For details on external voltage control, see page 107 (External Voltage Control of Current Output) and 111 (External Resistance Control of Current Output).

F-91

0= Panel control (local) 1 = External voltage control 2 = External resistance control (Ext-R 10kΩ = Io,max) 3 = External resistance control

(Ext-R 10kΩ = 0)

Power-ON Output

Sets the power supply to turn the output on or off at power up.

F-92

0 = OFF at startup, 1 = On at start up

Master/Slave

Sets the power supply as master or slave. See the parallel/series operation for details, page

62.

Power On Configuration Settings

F-93

0 = Master/Local 1 = Master/Parallel1 2 = Master/Parallel2 3 = Slave/Parallel 4 = Slave/Series

External Out Logic

Sets the external logic as active high or low.

F-94

0= High ON, 1 = Low ON

Power Switch Trip

Turns the power off if enabled when the protection settings are tripped.

F-95

1 = Disable, 0 = Enable

Calibration

Programmable Calibration

The calibration password is used to access the local mode calibration or other special functions. The password used determines which function is accessed. Please see your distributor for details.

F-00

0000 ~ 9999

The normal function settings (F-01~F-61, F88~F-89) can be easily configured with the Function key.

 Ensure the load is not connected.  Ensure the output is off.

Note

Function setting F-89 (Show Version) can only be viewed, not edited.

Configuration settings F-90~F-95 cannot be edited in the Normal Function Settings. Use the Power On Configuration Settings. See page 99 for details.

CONFIGURATION

Setting Normal Function Settings

PSW Series User Manual

Steps

1. Press the Function key. The

function key will light up.

Function

2. The display will show F-01

on the top and the configuration setting for F-01 on the bottom.

3. Rotate the voltage knob to change

the F setting.

Voltage

Range

F-00~ F-61, F-88~F-89

4. Use the current knob to set the

parameter for the chosen F setting.

Current

5. Press the Voltage knob to save the

configuration setting. ConF will be displayed when successful.

Voltage

Exit

Press the Function key again to exit the configuration settings. The function key light will turn off.

Function

CONFIGURATION

Background

The Power On configuration settings can only be changed during power up to prevent the configuration settings being inadvertently changed.

 Ensure the load is not connected.  Ensure the power supply is off.

Steps

1. Hold the Function key whilst

turning the power on.

2. The display will show F-90 on the

top and the configuration setting for F-90 on the bottom.

%W10080604020

ISR

C C

DLY

ALM

RMT

C V

VSR

Function OVP/OCP Set

Output

PWR DSPLLock/LocalTest

PSW 30 -36

360W

Voltage

Current

Multi-Range DC Power Supply

3. Rotate the voltage knob to change

the F setting.

Voltage

Range

F-90~ F-95

4. Use the current knob to set the

parameter for the chosen F setting.

Current

Setting Power On Configuration Settings

PSW Series User Manual

5. Press the Voltage knob to save the

configuration setting. ConF will be displayed when successful.

Voltage

Exit

Cycle the power to save and exit the configuration settings.

100

GW Instek PSW Series USER MANUAL

Specifications and Main Features

Frequently Asked Questions

User Manual

SAFETY INSTRUCTIONS

Safety Symbols

Safety Guidelines

Power cord for the United Kingdom

GETTING STARTED

PSW Series Overview

Series lineup

Main Features

Accessories

Package Contents

Appearance

PSW Front Panel

Rear Panel

Theory of Operation

Operating Area Description

CC and CV Mode

Slew Rate

Bleeder Control

Internal Resistance

Alarms

Considerations

Grounding

OPERATION

Set Up

Line Voltage Connection – Type III Models

Filter Installation

Power Up

Wire Gauge Considerations

Output Terminals

Using the Output Terminal Cover

Using the Rack Mount Kit

How to Use the Instrument

Reset to Factory Default Settings

View System Version and Build Date

Basic Operation

Setting OVP/OCP Levels

Set to C.V. Mode

Set to C.C. Mode

Display Modes

Panel Lock

Remote Sense

Parallel / Series Operation

Master-Slave Parallel Overview

Master-Slave Parallel Connection

Master-Slave Parallel Operation

Master-Slave Series Overview

Master-Slave Series Connection

Master-Slave Series Operation

Test Scripts

Test Script File Format

Test Script Settings

Setting the Test Script Settings

Load Test Script from USB

Run Test Script

Export Test Script to USB

Remove Test Script

CONFIGURATION

Configuration

Configuration Table

Normal Function Settings

USB/GPIB Settings

LAN Settings

System Settings

Power On Configuration Settings

Calibration

Setting Normal Function Settings

Setting Power On Configuration Settings