PSW-Series ENG Manual

7/22/2019 PSW-Series ENG Manual

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Multi-Range DC Power Supply

PSW Series

USER MANUALGW INSTEK PART NO. 82SW-80400MC1

ISO-9001 CERTIFIED MANUFACTURER


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This manual contains proprietary information, which is protected bycopyright. All rights are reserved. No part of this manual may bephotocopied, reproduced or translated to another language withoutprior 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 therights to change specification, equipment, and maintenanceprocedures at any time without notice.Good Will Instrument Co., Ltd.No. 7-1, Jhongsing Rd., Tucheng Dist., New Taipei City 236, Taiwan


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SAFETY INSTRUCTIONS

3

Table of ContentsSAFETY INSTRUCTIONS 5GETTING STARTED 9

PSW Series Overview ........................... 10Appearance .......................................... 15Theory of Operation ............................. 21

OPERATION 33Set Up .................................................. 35 Basic Operation ................................... 49Parallel / Series Operation ................... 62Test Scripts .......................................... 76

CONFIGURATION 84Configuration ....................................... 85

ANALOG CONTROL 101Analog Remote Control Overview ....... 102Remote Monitoring ............................ 118

COMMUNICATION INTERFACE 123Interface Configuration ...................... 124

MAINTENANCE 135FAQ 137APPENDIX 139

PSW Default Settings ......................... 139Error Messages & Messages .............. 141

LCD Display Format ........................... 141


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PSW Series User Manual

4

PSW Specifications ............................ 142PSW Dimensions ............................... 151Declaration of Conformity .................. 154

INDEX 155


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SAFETY INSTRUCTIONS

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SAFETY INSTRUCTIONSThis chapter contains important safetyinstructions that you must follow duringoperation and storage. Read the following beforeany operation to insure your safety and to keepthe instrument in the best possible condition.

Safety Symbols

These safety symbols may appear in this manual or on theinstrument.

WARNINGWarning: Identifies conditions or practices thatcould result in injury or loss of life.

CAUTIONCaution: Identifies conditions or practices thatcould result in damage to the PSW or to otherproperties.

DANGER High Voltage

Attention Refer to the Manual

Protective Conductor Terminal

Earth (ground) Terminal


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6

Do not dispose electronic equipment as unsortedmunicipal waste. Please use a separate collectionfacility or contact the supplier from which this

instrument was purchased.

Safety Guidelines

GeneralGuideline

CAUTION

Do not place any heavy object on the PSW.

Avoid severe impact or rough handling thatleads 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 arequalified.

(Measurement categories) EN 61010-1:2001 specifies themeasurement categories and their requirements as follows. the

PSW falls under category II.

Measurement category IV is for measurement performed at thesource of low-voltage installation.

Measurement category III is for measurement performed in thebuilding installation.

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

Measurement category I is for measurements performed oncircuits not directly connected to Mains.

Power Supply

WARNING

AC Input voltage range: 85VAC~265VAC

Frequency: 47Hz~63Hz

To avoid electrical shock connect the protectivegrounding conductor of the AC power cord toan earth ground.


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SAFETY INSTRUCTIONS

7

Cleaning the PSW Disconnect the power cord before cleaning.

Use a soft cloth dampened in a solution of milddetergent and water. Do not spray any liquid.

Do not use chemicals containing harsh materialsuch as benzene, toluene, xylene, and acetone.

OperationEnvironment

Location: Indoor, no direct sunlight, dust free,almost non-conductive pollution (Note below)

Relative Humidity: 20%~ 85%

Altitude: < 2000m

Temperature: 0C to 50C

(Pollution Degree) EN 61010-1:2001 specifies the pollution degreesand their requirements as follows. The PSW falls under degree 2.

Pollution refers to addition of foreign matter, solid, liquid, orgaseous (ionized gases), that may produce a reduction of dielectricstrength or surface resistivity.

Pollution degree 1: No pollution or only dry, non-conductivepollution occurs. The pollution has no influence.

Pollution degree 2: Normally only non-conductive pollutionoccurs. Occasionally, however, a temporary conductivity causedby condensation must be expected.

Pollution degree 3: Conductive pollution occurs, or dry, non-conductive pollution occurs which becomes conductive due tocondensation which is expected. In such conditions, equipmentis normally protected against exposure to direct sunlight,precipitation, and full wind pressure, but neither temperaturenor humidity is controlled.

Storage

environment

Location: Indoor

Temperature: -25C to 70C

Relative Humidity:


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8

Power cord for the United Kingdom

When using the power supply in the United Kingdom, make surethe power cord meets the following safety instructions.

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

WARNING: THIS APPLIANCE MUST BE EARTHEDIMPORTANT: The wires in this lead are coloured in accordance with thefollowing code:Green/ Yellow: EarthBlue: NeutralBrown: Live (Phase)

As the colours of the wires in main leads may not correspond withthe coloured marking identified in your plug/appliance, proceedas follows:

The wire which is coloured Green & Yellow must be connected tothe 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 terminalwhich is marked with the letter N or coloured Blue or Black.

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

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

This cable/appliance should be protected by a suitably rated andapproved HBC mains fuse: refer to the rating information on theequipment and/or user instructions for details. As a guide, a cableof 0.75mm2should be protected by a 3A or 5A fuse. Larger

conductors would normally require 13A types, depending on theconnection method used.

Any exposed wiring from a cable, plug or connection that isengaged in a live socket is extremely hazardous. If a cable or plug isdeemed hazardous, turn off the mains power and remove the cable,any fuses and fuse assemblies. All hazardous wiring must beimmediately destroyed and replaced in accordance to the abovestandard.


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GETTING STARTED

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GETTING STARTEDThis chapter describes the power supply in anutshell, including its main features and front /rear panel introduction. After going through theoverview, please read the theory of operation tobecome familiar with the operating modes,

protection modes and other safety considerations.

PSW Series Overview 10Series lineup .................................................................................................................10Main Features...............................................................................................................11

Accessories ...................................................................................................................12Package Contents ........................................................................................................14Appearance 15PSW Front Panel .........................................................................................................15Rear Panel .....................................................................................................................18


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1

PSW Series Overview

Series lineupThe PSW series consists of 9 models, divided into 3 different modeltypes covering 3 power capacities: Type I (360 Watt), Type II (720Watt) 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 360WPSW 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 1080WPSW 160-21.6 Type III 0~160V 0~21.6A 1080W

Apart from the differences in output, each unit differs in size. The720 and 1080 watt models are larger than the 360 watt models toaccommodate the increase in power.

360 Watt models

Type I

A

W

V

W

%W10080604020

ISR

C C

DLY

ALM

RMT

C V

VSR

Function OVP/OCP SetOutput

PWR DSPLLock/LocalTest

PSW 30-36 360W

Multi-RangeDC Power Supply Voltage

Current

720 Watt models

Type II

A

W

V

W

%W10080604020

ISR

C C

DLY

ALM

RMT

C V

VSR



PSW 30-72 720W

Voltage

Current

Multi-RangeDC Power Supply

1080 Watt models

Type III

A

W

V

W

%W10080604020

ISR

C C

DLY

ALM

RMT

C V

VSR



PSW 30-108 1080W

Voltage

Current



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GETTING STARTED

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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 quicklydissipate the power after shutdown to safelevels.

Extensive remote monitoring and controloptions

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 currentmonitoring

USB host and device port


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Accessories

StandardAccessories 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 andwashers x2, M8 terminal

bolts, nuts and washers x2,Air filter x1, Analog controlprotection dummy x1,Analog control lock level x1

OptionalAccessories

Part number Description

GET-001 Extended terminal

PSW-001 Accessory Kit:Pin contact x10, Socket x1,Protection cover x1

PSW-002 Simple IDCTool

PSW-003 Contact

Removal Tool


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GETTING STARTED

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PSW-005 Series operation cable for 2units.

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


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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 screwsand washers x2

Air filter x1

L-type USB cable x1

Power cord x1 (regiondependent)

Analog controlprotection dummy x1

Analog control lock

lever x1

M8 terminal bolts,nuts and washers X2


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GETTING STARTED

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Appearance

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

A

W

V

W

%W10080604020

ISR

C C

DLY

ALM

RMT

C V

VSR

Funct ion OVP/OCP SetOutput


PSW 30-72 720W

Voltage

Current


Current

knob

Outputkey

Powerswitch

Voltageknob

USB Aport

Display

Coverpanel

Functionkeys

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

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

A

W

V

W

%W10080604020

ISR

C C

DLY

ALM

RMT

C V

VSR



PSW 30-108 1080WVoltage

Current


A

W

V

W

%W10080604020

ISR

C C

DLY

ALM

RMT

C V

VSR



PSW 30-36 360WMulti-Range DC Power Supply Voltage

Current


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Function Keys The Function keys along with the Output key will

light up when a key is active.

Function

The Function key is used toconfigure the power supply.

OVP/OCP

Set the over current or overvoltage protection levels.

Set

Sets the current and voltage limits.

Test

Used to run customized scripts fortesting.

Lock/Local

Locks or unlocks the panel keys toprevent accidentally changingpanel settings.

PWR DSPL

Toggles the display from viewingV/AV/WA/W.

DisplayIndicatorsVSR

Voltage Slew RateC V Constant Voltage Mode

RMT Remote Control Mode

ALM Alarm on

DLY Delay Output

C C Constant Current Mode

ISR Current Slew Rate


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GETTING STARTED

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20 40 60 80 100 % W

Power bar

Indicates the current power outputas a percentage.

Voltage Knob Voltage

Sets the voltage.

Current Knob Current

Sets the current.

Output Output

Press to turn on the output. TheOutput key will light up when theoutput is active.

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

Power Switch Used to turn the power on/off.


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Rear Panel

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

Outputterminal(+)

Fan

Outputterminal(-)

USB Bport

LAN

AC Input

Sense-terminal

Analog controlconnector

LAN100 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)

1 00 2 40 VAC

1500VAMAX.4 7 6 3H z

LANLN

SER.NO. LABEL

AC Input

LAN

100 240V

4 7 6 3H z 5 00 VA MAX.

AC


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GETTING STARTED

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Analog ControlConnector

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

The analog control connector isused to monitor current and voltageoutput, machine status (OVP, OCP,OTP etc.), and for analog control ofthe current and voltage output.

Use an OMRON XG5 IDC socket asthe mating socket.

Output Terminals Positive (+) and negative (-) outputterminals.

Chassis ground

Sense (-) and Sense (+) terminals.

USB B port The USB B port is used for remotecontrol.

Fans Temperature controlled fans

Ethernet Port LAN

The ethernet port is used for remotecontrol and digital monitoring froma PC.

Line VoltageInput

(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)


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2

Line VoltageInput

(Type III)

LN

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

Voltage Input: 100~240 VAC

Line frequency: 50Hz/60 Hz(Automatically switchable)


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Theory of OperationThe theory of operation chapter describes the basic principles of

operation, protection modes and important considerations thatmust be taken into account before use.

Operating Area Description

Background The PSW power supplies are regulated DCpower supplies with a high voltage and current

output. These operate in CC or CV modewithin a wide operating range limited only bythe output power.

The operating area of each power supply isdetermined by the rated output power as wellas the voltage and current rating. For examplethe operating area and rated power output forthe PSW 30-36 is shown below.

Voltage

Current

30

360W rated power

10

12 36

PSW 30-36 Operating Area

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

If however, the power supply is configuredsuch that the total output (current x voltageoutput) exceeds the rated power output, the


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effective output is actually limited to the powerlimit of the unit. In this case the output currentand voltage then depend purely on the loadvalue.

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

PSW 160V Series Operating Area

020

160

Current (A)

Voltage(V

)

406080

140

0 5 10 15 20

180

25

Type IIIType IIType I

100120

2.25 4.5 6.75

160

50

14.4 21.67.2


Current (A)

Voltage(V)

26.6

4.5 9.0 13.5

80


30 4540205 10 15 250 35

0

20

40

60

8090

27 40.5


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GETTING STARTED

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0

5

30

Current (A)

Voltage(V)

10

15

20

25

0 20 40 60 80 100

10

12 24 36

30

35

120


72 108

CC and CV Mode

CC and CV modeDescription

When the power supply is operating inconstant current mode (CC) a constant currentwill be supplied to the load. When in constant

current mode the voltage output can vary,whilst the current remains constant. When theload resistance increases to the point where thecurrent limit (ISET) can no longer be sustainedthe power supply switches to CV mode. Thepoint where the power supply switches modesis the crossover point.

When the power supply is operating in CVmode, a constant voltage will be supplied tothe load, whilst the current will vary as theload varies. At the point that the loadresistance is too low to maintain a constantvoltage, the power supply will switch to CCmode and maintain the set current limit.

The conditions that determine whether the

power supply operates in CC or CV modedepends on the set current (ISET), the set voltage


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(VSET), the load resistance (RL) and the criticalresistance (RC). The critical resistance isdetermined by VSET/ISET. The power supplywill operate in CV mode when the load

resistance is greater than the critical resistance.This means that the voltage output will beequal to the VSETvoltage but the current will beless than ISET. If the load resistance is reducedto the point that the current output reaches theISETlevel, the power supply switches to CCmode.

Conversely the power supply will operate inCC mode when the load resistance is less thanthe critical resistance. In CC mode the currentoutput is equal to ISETand the voltage output isless than VSET.

RL=RC

RLRCCrossover

point


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GETTING STARTED

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Slew Rate

Theory The PSW has selectable slew rates for CC andCV mode. This gives the PSW power supplythe ability to limit the current/voltage draw ofthe power supply. Slew rate settings aredivided into High Speed Priority and SlewRate Priority. High Speed Priority modedisables slew rate settings for CC or CV mode.Slew Rate Priority mode allows for user

adjustable slew rates for CC or CV mode. Therising and falling slew rate can be setindependently.

Slew rate=

Disabled Slew rate =

Enabled

Bleeder Control

Background The PSW DC power supplies employ a bleedresistor in parallel with the output terminals.

PSW LoadBleed

resistor

Bleed resistors are designed to dissipate thepower from the power supply filter capacitors

when power is turned off and the load isdisconnected. Without a bleed resistor, power


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

In addition, bleed resistors also allow for

smoother voltage regulation of the powersupply as the bleed resistor acts as a minimumvoltage load.

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

NoteBy default the bleed resistance is on. For batterycharging applications, be sure to turn the bleedresistance off as the bleed resistor can dischargethe connected battery when the unit is off.

Internal Resistance

Background On the PSW, the internal resistance of thepower supply can be user-defined in software.

(Internal Resistance Setting, page89). When theinternal resistance is set it can be seen as aresistance in series with the positive outputterminal. This allows the power supply tosimulate power sources that have internalresistances such as lead acid batteries.

InternalResistance Range

Unit Model Internal Resistance Range

PSW 30-36 0.000 ~ 0.833PSW 30-72 0.000 ~ 0.417PSW 30-108 0.000 ~ 0.278PSW 80-13.5 0.000 ~ 5.926PSW 80-27 0.000 ~ 2.963PSW 80-40.5 0.000 ~ 1.975PSW 160-7.2 0.000 ~ 22.222PSW 160-14.4 0.000 ~ 11.111PSW 160-21.6 0.000 ~ 7.407


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Alarms

The PSW power supplies have a number of protection features.

When one of the protection alarms are set, the ALM icon on thedisplay will be lit. For details on how to set the protection modes,please see page49.

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

OCP Overcurrent protection prevents high current

from damaging the load.

OTP Over temperature protection protects theinstrument from overheating.

Power Switch Trip When the Power Switch Trip configurationsetting is enabled, the power supply willautomatically shut down when a protection

setting has been tripped (OCP, OVP, OTP).

Alarm output Alarms are output via the analog controlconnector. The alarm output is an isolatedopen-collector photo coupler output.


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28

Considerations

The following situations should be taken into consideration when

using the power supply.

Inrush current When the power supply switch is first turnedon, an inrush current is generated. Ensure thereis enough power available for the powersupply when first turned on, especially if anumber of units are turned on at the sametime.

CautionAllow at least 15 seconds between cycling thepower. Cycling the power on and off quickly cancause the inrush current limiting circuit to fail aswell as reduce the working life of the input fuseand power switch.

Pulsed or Peaked

loads

When the load has current peaks or is pulsed, it

is possible for the maximum current to exceedthe mean current value. The PSW powersupply ammeter only indicates mean currentvalues, which means for pulsed current loads,the actual current can exceed the indicatedvalue. For pulsed loads, the current limit mustbe increased, or a power supply with a greatercapacity must be chosen. As shown below, apulsed load may exceed the current limit and

the indicated current on the power supplyammeter.


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GETTING STARTED

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Current limit

level

Measured

Ammeter

current

Reverse Current:Regenerative load

When the power supply is connected to aregenerative load such as a transformer or

inverter, reverse current will feed back to thepower supply. The PSW power supply cannotabsorb reverse current. For loads that createreverse current, connect a resistor in parallel tothe power supply to bypass the reversecurrent. This description only applies when thebleed resistance is off.

PSW LoadResistor

Reverse current

NoteThe current output will decrease by the amount ofcurrent absorbed by the resistor.

Ensure the resistor used can withstand the power

capacity of the power supply/load.


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3

Reverse Current:Accumulativeenergy.

When the power supply is connected to a loadsuch as a battery, reverse current may flowback to the power supply. To prevent damage

to the power supply, use a reverse-current-protection diode in series between the powersupply and load.

PSW Load

Diode

CAUTIONEnsure the reverse withstand voltage of the diodeis able to withstand 2 times the rated outputvoltage of the power supply and the forwardcurrent capacity can withstand 3 to 10 times therated output current of the power supply.

Ensure the diode is able to withstand the heatgenerated in the following scenarios.

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


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GETTING STARTED

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Grounding

The output terminals of the PSW power supplies are isolated with

respect to the protective grounding terminal. The insulationcapacity of the load, the load cables and other connected devicesmust be taken into consideration when connected to the protectiveground or when floating.

Floating As the output terminals are floating, the loadand all load cables must have an insulationcapacity that is greater than the isolation

voltage of the power supply.

PSWLoad

Ext-V

Ext-R

Analog

connector

( ) Insulation capacity isolation voltage

of power supply

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


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32

Grounded outputterminal

If the positive or negative terminal is connectedto the protective ground terminal, theinsulation capacity needed for the load and

load cables is greatly reduced. The insulationcapacity only needs to be greater than themaximum output voltage of the power supplywith respect to ground.

PSWLoad

Ext-V

Ext-R

Analog

connector

( ) Insulation capacity voltage of power

supply with respect to ground

CAUTIONIf using external voltage control, do not ground

the external voltage terminal as this will create ashort circuit.


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OPERATION

33

OPERATIONSet Up 35Line Voltage Connection Type III Models .........................................................35Filter Installation .........................................................................................................37Power Up ......................................................................................................................38

Wire Gauge Considerations ......................................................................................39Output Terminals ........................................................................................................40Using the Output Terminal Cover ...........................................................................42Using the Rack Mount Kit ........................................................................................43How to Use the Instrument ......................................................................................43Reset to Factory Default Settings .............................................................................45

View System Version and Build Date .....................................................................46Basic Operation 49Setting OVP/OCP Levels .........................................................................................49Set to C.V. Mode .........................................................................................................51Set to C.C. Mode .........................................................................................................54Display Modes .............................................................................................................57Panel Lock ....................................................................................................................58Remote Sense ...............................................................................................................59Parallel / Series Operation 62Master-Slave Parallel Overview ................................................................................63Master-Slave Parallel Connection .............................................................................65Master-Slave Parallel Operation ...............................................................................68Master-Slave Series Overview ...................................................................................70Master-Slave Series Connection ...............................................................................72Master-Slave Series Operation ..................................................................................74Test Scripts 76

Test Script File Format ..............................................................................................77Test Script Settings .....................................................................................................77Setting the Test Script Settings .................................................................................78Load Test Script from USB .......................................................................................79


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34

Run Test Script ........................................................................................................... 80Export Test Script to USB ....................................................................................... 81Remove Test Script .................................................................................................... 82


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OPERATION

35

Set Up

Line Voltage Connection Type III Models

Background The Type III (PSW 30-108/PSW 80-40.5/PSW160-21.6) models use a universal power inputthat can be used with 100 and 200 VACsystems. To connect or replace the power cord(GW Instek part number: 4320-91001101, usethe procedure below:

WarningThe following procedure should only be attemptedby competent persons.

Ensure the AC power cord is not connected topower.

Removal 1. Turn off the power switch.

1

2. Unscrew the power cordprotective sheath.

3. Remove the 2 screwsholding the power cordcover and remove.

3

2


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36

4. Slide the cover off the ACterminals.

5. Remove the AC powercord wires.

5

4

Installation 1. Connect the AC powercord wires to the AC inputterminals.

White/BlueNeutral(N)

Green/Green-

yellowGND ( )

Black/BrownLine(L)

LN

Line

N

eutral

G

round

2. Set the cover back over theAC terminals.

2

3. Re-install the power cordcover.

4. Screw the power cordsheath back onto the cover. 3

4


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OPERATION

37

Filter Installation

Background The PSW has a small filter (GW Instek partnumber, 57RG-30B00101) that must first beinserted under the control panel beforeoperation. The small filter must be inserted forall model types (Type I/II/II).

Steps 1. Insert the small filterin the open area

under the controlpanel.

Type II shown as anexample

2. The unit is now ready to power up.


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38

Power Up

Steps 1. Type I or II: Connect thepower cord to the rearpanel socket.

Type III: Connect thepower cord to theuniversal power input.

Page35

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 rightbefore the power was last turned OFF.

For default configuration settings, see page139.

V

A

CAUTIONThe power supply takes around 8 seconds to fullyturn on and shutdown.

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


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OPERATION

39

Wire Gauge Considerations

Background Before connecting the output terminals to aload, the wire gauge of the cables should beconsidered.

It is essential that the current capacity of theload cables is adequate. The rating of the cablesmust equal or exceed the maximum currentrated output of the instrument.

Recommendedwire gauge

Wire Gauge Maximum Current

20 2.5A18 4A16 6A14 10A12 16A10 21A8 36A

6 61A4 97A


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4

Output Terminals

Background Before connecting the output terminals to theload, first consider whether voltage sense willbe used, the gauge of the cable wiring and thewithstand voltage of the cables and load.

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

WARNING Dangerous voltages. Ensure that the power to theinstrument is disabled before handling the powersupply output terminals. Failing to do so may leadto electric shock.

Steps 1. Turn the power switch off.

2. Remove the output terminal cover. Page42

3. If necessary, screw the chassisground terminal to either thepositive or negative terminal. Seethe grounding chapter for details.

Page31

Sense joining plates

Ground

4. Choose a suitable wire gauge for

the load cables.

Page39


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OPERATION

41

5. Choose a suitable crimp for the terminals.

6. If using voltage sense, remove the

sense terminal joining plates andconnect sensing wires to theload(s).

Page59

7. Connect the positive load cable to the positiveoutput terminal and the negative cable to thenegative output terminal.

8.

Reattach the output terminalcover. Page42

Connectionwithout sensewiring

Using M4 screws

Positivepotential

Negativepotential

Using M8 bolts

Positivepotential

Negativepotential

Connection withsense wiring

Using M4 screwsSense -

Sense +

Using M8 boltsSense -

Sense +


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42

Using the Output Terminal Cover

Steps 1. Remove the screw holding the top cover to thebottom cover.

2. Line-up the bottom cover with the notches inthe output terminals.

3. Place the top terminal cover over the bottomcover.

Details2

3

1

4. Use your thumb to slide the terminal coversshut, 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.

4

5


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OPERATION

43

Removal Reverse the procedure to remove the terminalcovers.

Using the Rack Mount Kit

Background The PSW series has an optional Rack MountKit (GW Instek part number: [JIS] GRA-410-J,[EIA] GRA-410-E[EIA]) that can be used tohold 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 mountdiagram

Type I Type II Type III

How to Use the Instrument

Background The PSW power supplies use a novel methodof configuring parameter values only using thevoltage or current knobs. The knobs are used to

quickly edit parameter values at 0.01, 0.1 or 1unit steps at a time.

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

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


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44

1. Repeatedly press the voltage knobuntil the last digit is highlighted.This will allow the voltage to be

edited in 0.01 volt steps.

2. Turn the voltage knob till 0.05volts is shown.

Voltage

Voltage

V

A

V

A

3. Repeatedly press the voltage knob until thefirst digit is highlighted. This will allow thevoltage to be edited in 1 volt steps.

4. Turn the voltage knob until 10.05 is shown.

V

A

V

A

NoteNotice the Set key becomes illuminated whensetting the current or voltage.

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


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OPERATION

45

Reset to Factory Default Settings

Background The F-88 configuration setting allows the PSWto be reset back to the factory default settings.See page139 for the default factory settings.

Steps 1. Press the Function key. TheFunction key will light up.

Function

2. The display should show F-01 on the top and theconfiguration setting forF-01 on the bottom.

3. Rotate the voltage knob to changethe F setting to F-88 (Factory SetValue).

Voltage

4. Use the current knob to set theF-88 setting to 1 (Return to factorysettings).

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 willturn off.

Function


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46

View System Version and Build Date

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


Function


3. Rotate the voltage knob to change

the F setting to F-89 (ShowVersion).

Voltage

4. Rotate the current knob to viewthe version and build date for thevarious items.

Current


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OPERATION

47

F-89 0-XX: PSW Main Program Version1-XX: PSW Main Program Version2-XX: PSW Main Program Build On-Year.

3-XX: PSW Main Program Build On-Year.4-XX: PSW Main Program Build On-Month.5-XX: PSW Main Program Build On-Day.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.

-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 toexit. The function key light willturn off.

Function

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

0-01: PSW Main Program Version1-09: PSW Main Program Version2-20: 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.


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48

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.-11: Test Command Build On-Year.

K-07: Test Command Build On-Month.L-25: Test Command Build On-Day.


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OPERATION

49

Basic OperationThis section describes the basic operations required to operate the

power supply. Setting OVP/OCP from page49

C.V. mode from page51

C.C. mode from page54

Display modes page57

Panel lock page58

Remote sensing from page59

Before operating the power supply, please see the Getting Startedchapter, page9.

Setting OVP/OCP Levels

The OVP level has a selectable range of 10% to110% of the rated output voltage. The OCPlevel has a selectable range 10%~ 110% of therated output current, alternatively the OCPlevel can also be turned off. The OVP and OCPlevel 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 theprotection levels are tripped.

ALM

V

A


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5

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. TheOVP/OCP key lights up.

OVP/OCP

2. The OVP setting will be displayed on the topand the OCP setting (or OFF) will be displayedon the bottom.

V

A

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 theOCP level.

Current

Range 10%~110% of rated

output current, OFF.

5. Press OVP/OCP again to exit. TheOVP/OCP indicator will turn off.

OVP/OCP

Power switch trip Set F-95 (Power switch trip) to 1 (todisable the power switch trip) or to0 (to enable the power switch trip)

and save.

Page99

F-95 1 (Disable) or 0 (Enable)


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OPERATION

51

Clear OVP/OCPprotection

The OVP or OCP protection can becleared after it has been tripped byholding the OVP/OCP button for 2

seconds.(Only applicable when the powerswitch trip setting is disabled[F-95 = 1])

OVP/OCP

(hold)

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 thecurrent exceeds the crossover point, the mode switches to C.C.mode. For details about C.V. operation, see page21.C.C. and C.V.mode have two selectable slew rates: High Speed Priority and SlewRate Priority. High Speed Priority will use the fastest slew rate forthe instrument while Slew Rate Priority will use a user-configuredslew rate.

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

The output is off.

The load is connected.


Function


3. Rotate the voltage knob to changethe F setting to F-03 (V-I ModeSlew Rate Select).

Voltage


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52

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

Set F-03 to 0 (CV High SpeedPriority) or 2 (CV Slew RatePriority).

Current

F-03 0 = CV High Speed Priority

2 = CV Slew Rate Priority

5. Press the Voltage knob to save theconfiguration 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 (FallingVoltage 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. Thefunction key light will turn off.

Function

8. Use the Current knob to set thecurrent limit (crossover point).

Current


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OPERATION

53

9. Use the Voltage knob to set thevoltage.

Voltage

NoteNotice the Set key becomes illuminated whensetting the current or voltage. If the voltage orcurrent knobs are unresponsive, press the Set keyfirst.

10.Press the Output key. The Output

key becomes illuminated.

Output

C V

% W

V

A

CV and the Power Bar

will become illuminated

(top left & center)20 40 60 80 100 % W

NoteOnly the voltage level can be altered when theoutput is on. The current level can only be changedby pressing the Set key.

For more information on the Normal FunctionSettings (F-00 ~ F-61, F-88~F-89) see page89.


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54

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 thevoltage exceeds the crossover point, the mode switches to C.V.mode. For details about C.C. operation, see page21.C.C. and C.V.mode have two selectable slew rates: High Speed Priority and SlewRate Priority. High Speed Priority will use the fastest slew rate forthe instrument while Slew Rate Priority will use a user-configuredslew rate.

Background Before setting the power supply toC.C. mode, ensure:

The output is off.

The load is connected.


Function


3. Rotate the voltage knob to changethe F setting to F-03 (V-I Mode

Slew Rate Select).

Voltage

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

Set F-03 to 1 (CC High SpeedPriority) or 3 (CC Slew RatePriority) and save.

Current


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OPERATION

55

F-03 1 = CC High Speed Priority

3 = CC Slew Rate Priority

5. Press the Voltage knob to save theconfiguration setting. ConF will bedisplayed when successful.

Voltage

6. If CC Slew Rate Priority was chosen as theoperating mode, set F-06 (Rising Current SlewRate) and F-07 (Falling Current Slew Rate) andsave.

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 exitthe configuration settings. Thefunction key light will turn off.

Function

8. Use the Voltage knob to set thevoltage limit (crossover point).

Voltage


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56

9. Use the Current knob to set thecurrent.

Current

NoteNotice the Set key becomes illuminated whensetting the current or voltage. If the voltage orcurrent knobs are unresponsive, press the Set keyfirst.

10.Press the Output key. The Output

key becomes illuminated.

Output

% W

V

AC C

% W20 40 60 80 100

CC and the Power Bar

will become illuminated

(bottom left & center)

NoteOnly the current level can be altered when theoutput is on. The voltage level can only be changedby pressing the Set key.

For more information on the Normal FunctionSettings (F-00 ~ F-61, F-88~F-89) see page89.


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OPERATION

57

Display Modes

The PSW power supplies allow you to view the output in three

different modes: voltage and current, voltage and power or currentand power.

Steps 1. Press the PWR/DSPL key. ThePWR 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 orcurrent knob.

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

when in V/W mode, press the current knob todisplay A/W.

V

W

V

Voltage

Current

W

A

When V/W is displayed, the voltage knobcan still be used to change the voltage level.

When A/W is displayed, the current knobcan still be used to change the current level.

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

PWR DSPL


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58

Panel Lock

The panel lock feature prevents settings from being changed

accidentally. When activated, the Lock/Local key will becomeilluminated and all keys and knobs except the Lock/Local key andOutput key (if active) will be disabled.

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

Activate the panellock

Press the Lock/Local key to active

the panel lock. The key willbecome illuminated.

Lock/Local

Disable the panellock

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

Lock/Local


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OPERATION

59

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 todetermine the voltage drop across the load cables.

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

WARNINGEnsure the output is off before connecting anysense cables.

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

Never connect sensing cables when the output ison. Electric shock or damage to the power supplycould result.

NoteBe sure to remove the Sense joining plates so theunits are not using local sensing.

Single Load 1. Connect the Sense+ terminal to the positivepotential of the load. Connect the Sense-terminal to the negative potential of the load.

Output

Sense

Sense

PSW

Output

Load

Input

Input

Page40

2. Operate the instrument as normal.See the Basic Operation chapter for

details.

Page45


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6

Parallel PSWUnits

1. Connect the Sense+ terminals to the positivepotential of the load. Connect the Sense-terminals to the negative potential of the load.

Output

Sense

Sense

PSW #2

Output

Output

Sense

Sense

PSW #1

Output

Load

Input

Input

Page40

2. Operate the instrument as normal.See the Parallel Operation chapterfor details.

Page63

Serial PSW Units 1. a. Connect the 1stSense+ terminal to thepositive potential of the load.

b. Connect the 1stSense- terminal to thepositive output terminal of the second PSW

unit.

c. Connect the 2ndSense+ terminal to thepositive terminal of the second PSW unit.

d. Connect the 2ndSense- terminal to negativeterminal of the load.


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OPERATION

61

PSW #2

a

b

c

d

Load

Input

Input

Output

Sense

Sense

PSW #1

Output

Output

Sense

Sense

Output

Page40

2. Operate the instrument as normal.See the Serial Operation chapterfor details.

Page70

Wire Shieldingand Load lineimpedance

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

To minimize the effect of load line impedanceuse twisted wire pairing.

PSW Loadss

Twisted pair

Capacitor


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62

Parallel / Series OperationThis section describes the basic operations required to operate the

power supply in series or parallel. Operating the PSW series inparallel increases the total power output of the power supply units.When used in series, the total output voltage of the power suppliescan be increased.

The number of the power supplies that can be connected in seriesor 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 usedin a Master-Slave configuration. In the master-slave configuration amaster power supply controls any other connected slavepower supplies.

Master-Slave Parallel overview from page63

Parallel connection from page65 Parallel operation from page68

Master-Slave Series overview page70

Series connection page72

Series operation from page74

Before operating the power supply, please see the Getting Started

chapter, page9.


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OPERATION

63

Master-Slave Parallel Overview

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

When the units are used in parallel, a numberof precautions and limitations apply. Pleaseread this overview before operating the powersupplies in parallel.

Master

Load

Ext-V

Ext-R

Slave

VMON

IMON

Slave

Limitations Display

Only the master unit will display the voltage

and current.


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64

OVP/ OCP

The master unit can shut down slave unitswhen OVP/OCP is tripped on the master

unit (if the slave connector is wired for shutdown on alarm).

OVP/OCP can be independently tripped oneach slave unit, however the shutdown ofthe power or output of the unit is disabled.Only the alarm will be enabled.

Remote monitoring

Voltage monitoring (VMON) and currentmonitoring (IMON) are only supported onthe master unit.

The IMON current represents the totalcurrent of the all the parallelized units.

Remote Sense

Please see the remote sense chapter fordetails, page59.

External Voltage and Resistance Control

Voltage/Resistance controlled remotecontrol can only be used with the masterunit.

The full scale current (in parallel) isequivalent to the maximum external voltageor resistance.

Internal Resistance

For 2 units in parallel, the internal resistanceis actually half of the setting value.

For 3 units in parallel, the internal resistanceis actually a third of the setting value.


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OPERATION

65

Bleeder Control

The Master unit is used to control thebleeder settings. The bleeder resistors in all

the slave units are always turned off whenin parallel mode.

Output Voltage/Output Current

Model Single unit 2 units 3 unitsPSW 30-36 30V 30V 30V

36A 72A 108A

PSW 80-13.5 80V 80V 80V13.5A 27A 40.5A

PSW 160-7.2 160V 160V 160V7.2A 14.4A 21.6A

PSW 30-72 30V 30V 30V72A 144A 216A

PSW 80-27 80V 80V 80V27A 54A 81A

PSW 160-14.4 160V 160V 160V14.4A 28.8A 43.2A

PSW 30-108 30V 30V 30V108A 216A 324A

PSW 80-40.5 80V 80V 80V40.5A 81A 121.5A

PSW 160-21.6 160V 160V 160V21.6A 43.2A 64.8A

Master-Slave Parallel Connection

Master-SlaveConnector

The Analog Control Connector is used for bothserial and parallel connections. The way theconnector is configured determines thebehavior of the master and slave units. For thecomplete connector pin assignment, see page102.


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66

Analog ConnectorConnection

To operate the power supplies in parallel,connect the analog connectors on the masterand slave units as shown in the diagrams

below.Master with 2 slave units:

12

13

14

1517

20

21

24 20 12

17 15 3 1715

31224 20

11 12 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:

2

12

131517

20

21

24 20 12

17 15 323

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


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OPERATION

67

Parallel OutputConnection

-

+

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 masterand slave unit as shown above.

4. Remove the Output Terminal

covers and the protection dummyplug from the analog controlconnector.

Page42

5. Connect the master and slave unit in parallel asshown above.

6. Reattach the terminal covers. Page42

NoteEnsure the load cables have sufficientcurrent capacity.

Page39

Re-attach the Protection dummy plug when not inuse.


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68

Master-Slave Parallel Operation

Master-SlaveConfiguration

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

Steps 1. Configure the OVP and OCPsettings for the master unit.

Page49

2. For each unit, hold the Functionkey while turning the power on to

enter the power on configurationsettings.

A

W

V

W

%W10080604020

ISR

CC

DLY

ALM

RMT

CV

VSR

F unc t ion OV P/OCP S e tOutput

PWRDSPLLock/LocalTest

PSW 30-36 360W

Voltage

Current

Multi-RangeDC PowerSupply

3. Configure F-93 (Master/Slave)setting for each master/slave unit.

Page99

UnitF-93

Master (with 1 slave in parallel) 1

Master (with 2 slaves in parallel) 2

Slave unit (parallel slave) 3

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

NoteConfiguration settings can be checked for both themaster and slave units by pressing the Functionkey and checking F-93.

Only the Master OVP and OCP level is used forover voltage and current protection. Slave OVP andOCP level is disregarded.

OTP works independently for each unit.


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OPERATION

69

Master-SlaveOperation

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

1. Turn on the master and slave units. The slaveunit(s) will show a blank display.

Master unit Slave units

2. Operation of all units is controlledvia the master unit. Operation ofthe master unit is the same as for asingle unit. See the Basic Operationchapter.

Page45.

3. Press the Output key to begin. Output

CautionOnly operate the power supplies in parallel if usingunits of the same model number.

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

NoteThe panel controls are disabled on slave units,including the output key. On slave units only theFunction key can be used to view the currentsettings.


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7

Master-Slave Series Overview

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

When the units are used in series, a number ofprecautions and limitations apply. Please readthis overview before operating the powersupplies in series.

Master

Load

Ext-V

Ext-R

Slave

VMON

IMON

Limitations Display

Only the master unit will display thecurrent.

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 themaster unit (if the slave connector is wiredfor shut down on alarm).

OVP and OCP level is determined by themaster OVP and OCP level. The OVP andOCP level on the slave unit is ignored.


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OPERATION

71

Remote monitoring

Voltage monitoring (VMON) and currentmonitoring (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 fordetails, page59.

External Voltage and Resistance Control Voltage/Resistance controlled remote

control can only be used with the masterunit.

The full scale voltage (in series) is equivalentto the maximum external voltage orresistance.

Slew Rate The actual slew rate is double that of the

setting slew rate. I.e., A slew rate setting of60.00V/s is actually 120V/s when in series.

Internal Resistance

The internal resistance is actually twice thatof the setting value.

Bleeder Control

The Master unit is used to control thebleeder settings. The bleeder resistor isalways turned on for the slave unit in seriesmode.


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72

Output Voltage/Output Current

Model Single unit 2 unitsPSW 30-36 30V 60V

36A 36A

PSW 80-13.5 80V 160V

13.5 13.5APSW 160-7.2 160V 320V

7.2A 7.2A

PSW 30-72 30V 60V72A 72A

PSW 80-27 80V 160V27A 27A

PSW 160-14.4 160V 320V14.4A 14.4A

PSW 30-108 30V 60V108A 108A

PSW 80-40.5 80V 160V40.5A 40.5A

PSW 160-21.6 160V 320V

21.6A 21.6A

Master-Slave Series Connection

Master-SlaveConnector

The Analog Control Connector is used for bothserial and parallel connections. The way theconnector is configured determines thebehavior of the master and slave units. For theconnector pin assignment, see page102.

Analog ConnectorConnection

To operate the power supplies in series, connectthe analog connectors on the master and slaveunit as shown in the diagram below.


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OPERATION

73

2

12

17

20

21

Master unitA COM16

OUTPUT ON STATUS21

ALM STATUS20

STATUS COM17

SHUTDOWN12

Slave Unit 125 SER SLV IN

20 ALM STATUS

12 SHUTDOWN

2 D COM

24 OUT OFF/ON CONT

2 D COM

24 20 12

1725 2

16

17 STATUS COM

Series OutputConnection

Master unitLoad

+-

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 masterand slave unit as shown above.

4. Remove the output terminal coverand the protection dummy plug

from the analog control connector.

Page42

5. Connect the master and slave unit in series asshown above.

6. Reattach the terminal cover. Page42

NoteEnsure load cables have sufficient

current capacity.

Page39


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74

Re-attach the protection dummy plug when not inuse.

Master-Slave Series Operation

Master-SlaveConfiguration

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

1. Configure the OVP and OCPsettings for the master unit.

Page49

2. For each unit, hold the Functionkey while turning the power on toenter the power on configurationsettings.

A

W

V

W

%W10080604020

ISR

CC

DLY

ALM

RMT

CV

VSR

F unc t ion OV P/OCP S e tOutput

PWRDSPLLock/LocalTest

PSW 30-36 360W

Voltage

Current

Multi-RangeDC PowerSupply

3. Configure F-93 (Master/Slave)setting for each master/slave unit.

Page99

Unit F-93

Master (local or series operation) 0

Slave unit (series) 4

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

NoteConfiguration settings can be checked for both themaster and slave units by pressing the Functionkey.


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76

Test ScriptsThis section describes how to use the Test function to run, load and

save test scripts for automated testing. The Test function is useful ifyou want to perform a number of tests automatically. The PSW testfunction can store ten test scripts in memory.

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

Test Script File Format from page77

Test Script Settings from page77 Setting the Test Script Settings from page78

Load Test Script from page79

Run Test Script from page80

Export Test Script from page81

Remove Test Script from page82


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Test Script File Format

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

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

Test Script Settings

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

The script will run as soon as the test function isstarted.

T-01 1~10

Test Load Loads a test script from the USB drive to thedesignated save slot in memory. A script mustfirst be loaded into internal memory before itcan be run.

T-02 1~10 (USBPSW)

Test Export Exports a script from the designated memorysave slot to the USB drive.

T-03 1~10 (PSWUSB)

Test Remove Deletes the chosen test file from the PSWinternal memory.

T-04 1~10


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Setting the Test Script Settings

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

1. Press the Test key. The Test keywill 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 amemory number.

Current

Range 1~10

5. Press the Voltage knob to completethe setting.

Voltage


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Exit Press the Test key again to exit theTest settings. The Test key lightwill turn off.

Test

Load Test Script from USB

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

Ensure the script file is placed in the rootdirectory.

Ensure the file name number corresponds tothe memory number that you wish to saveto.

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

Steps 1. Insert a USB flash drive into thefront panel USB-A slot. Ensure theflash drive contains a test script inthe root directory.

2. Turn on the power. MS (Mass Storage) will bedisplayed on the screen after a few seconds ifthe USB drive is recognized.


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NoteIf the USB drive is not recognized, check to seethat the function settings for F-20 = 1 (page93). Ifnot, reinsert the USB flash drive.

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

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T-02 range 1~10 (t001 ~t010)

4. The script will now be available in the memoryslot the script was saved to.

Note Error messages: If you load a file that is notpresent on the USB drive Err 002 will bedisplayed on the display.

Run Test Script

Overview A test script can be run from one of ten memoryslots.

Steps 1. Before a test script can be run, it

must first be loaded into one of the10 memory save slots.

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

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T-01 range 1~10

3. The test script will automatically start to run.


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NoteError messages: If you try to run a test script froman empty memory location Err 003 will bedisplayed on the display.

NoteWhen a script starts to run, there is no way to abortthe script. Pressing the Output key has no effect. If

you wish to stop a test early, turn the power off.

Export Test Script to USB

Overview The Export Test function saves a test file to theroot directory of a USB flash drive.

Files will be saved as tXXX.tst where XXX isthe memory number 001~010 from whichthe test script was exported from.

Files of the same name on the USB flashdrive will be written over.

Steps 1. Insert a USB flash drive into thefront panel USB-A slot.

2. Turn on the power. MS (Mass Storage) will bedisplayed on the screen after a few seconds ifthe USB drive is recognized.


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NoteIf the USB drive is not recognized, check to seethat the function settings for F-20 = 1 (page93). Ifnot, reinsert the USB flash drive.

3. Configure T-03 (Test Export) to0~10 (save memory slot)

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T-03 range 1~10

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

Note Error messages: If you try to export a test scriptfrom an empty memory location Err 003 will bedisplayed on the display.

Remove Test Script

Overview The Remove Test function will delete a testscript from the internal memory.

Steps 1. Select T-04 (Test Remove) and

choose which test script to removefrom the internal memory.

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T-04 range 1~10

2. The test script will be removed from theinternal memory.


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NoteError messages: If you try to remove a test scriptfrom an empty memory location Err 003 will bedisplayed on the display.


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CONFIGURATIONConfiguration 85Configuration Table ................................................................................................... 85Normal Function Settings ......................................................................................... 89USB/GPIB Settings ................................................................................................... 93LAN Settings ............................................................................................................... 94System Settings ........................................................................................................... 95Power On Configuration Settings ........................................................................... 96Calibration ................................................................................................................... 97


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ConfigurationConfiguration 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 thesettings used with Power ON Configuration settings can only be setduring power up. The other configuration settings can be changedwhen the unit is already on. This prevents some importantconfiguration parameters from being changed inadvertently. PowerOn Configuration settings are numbered F-90 to F-95 and the otherconfiguration settings are numbered F-00 to F-61 and F-88 to F-89.

Configuration Table

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

Normal FunctionSettings Setting Setting Range

Output ON delay time F-01 0.00s~99.99sOutput OFF delay time F-02 0.00s~99.99s

V-I mode slew rate select F-03

0 = CV high speed priority1 = CC high speed priority2 = CV slew rate priority3 = CC slew rate priority

Rising voltage slew rate F-040.01V/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-050.01V/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)


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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)


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)


Internal resistancesetting

F-08

0.000~0.833(PSW 30-36)0.000~0.417(PSW 30-72)0.000~0.278(PSW 30-108)0.000~5.926(PSW 80-13.5)0.000~2.963(PSW 80-27)0.000~1.975(PSW 80-40.5)0.000~22.222(PSW 160-7.2)0.000~11.111(PSW 160-14.4)0.000~7.407(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-210 = Absent, 2 = USB-CDC, 3 = GPIB-USB adapter

Rear panel USB mode F-220 = Disable, 1 = GPIB-USB adapter,2 = USB CDC

GPIB address F-23 0~30

LAN settings

MAC Address-1 F-30 0x00~0xFF

MAC Address-2 F-31 0x00~0xFFMAC Address-3 F-32 0x00~0xFF


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MAC Address-6 F-35 0x00~0xFFLAN F-36 0 = Disable, 1 = Enable

DHCP F-37 0 = Disable, 1 = EnableIP Address-1 F-39 0~255

IP Address-2 F-40 0~255

IP Address-3 F-41 0~255IP Address-4 F-42 0~255

Subnet Mask-1 F-43 0~255



Subnet Mask-4 F-46 0~255Gateway-1 F-47 0~255

Gateway-2 F-48 0~255

Gateway-3 F-49 0~255Gateway-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 = EnableWeb 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-880 = Disable1 = Return to factory settings

Show Version F-89

0, 1 = PSW version

2, 3 = PSW build year4, 5 = PSW build month/day6, 7 = Keyboard CPLD version8, 9 = Analog-Control CPLD versionA, B = ReservedC, D = Kernel build yearE, F = Kernel build month/dayG, H = Test command versionI, J = Test command build year

K, L = Test command buildmonth/day


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Power On Configuration Settings*

CV ControlF-90

0 = Panel control (local)1 = External voltage control2 = External resistance control

(Ext-R 10k= Vo, max)3 = External resistance control

(Ext-R 10k = 0)

CC Control F-91

0 = Panel control (local)1 = External voltage control2 = External resistance control

(Ext-R 10k = Io,max)3 = External resistance control

(Ext-R 10k = 0)

Power-ON Output F-92 0 = OFF at startup, 1 = On at startup

Master/Slave F-93

0 = Master/Local1 = Master/Parallel12 = Master/Parallel23 = Slave/Parallel4 = 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

*NotePower On and Calibration settings can only be setduring power up.


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Normal Function Settings

Output ON DelayTime

Delays turning the output on for a designatedamount of time. The Delay indicator will lightwhen the Delay time is not 0.

Note: The Output ON Delay Time setting has amaximum 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 OFFDelay Time Delays turning the output off for a designatedamount of time. The Delay indicator will lightwhen the Delay time is not 0.

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

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

DLY

F-02 0.00s~99.99s


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V-I Mode Selects High Speed Priority or Slew RatePriority for CV or CC mode. The voltage orcurrent slew rate can only be edited if CC/CV

Slew Rate Priority is selected. The ISR indicatorwill be lit for CC Slew Rate Priority and theVSR indicator will be lit for CV Slew RatePriority.

Note: CC and CV Slew Rate Priority mode aredisabled when voltage/current output is set toexternal control.

ISR

CC Slew Rate priority

VSR

CV Slew Rate priority

F-03 0 = CV high speed priority

1 = CC high speed priority2 = CV slew rate priority3 = CC slew rate priority

Rising VoltageSlew Rate

Sets the rising voltage slew rate. Onlyapplicable if V-I Mode is set to CV Slew RatePriority.

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 VoltageSlew Rate

Sets the falling voltage slew rate. Onlyapplicable if V-I Mode is set to CV Slew RatePriority.

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)


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Rising CurrentSlew Rate

Sets the rising current slew rate. Onlyapplicable if V-I Mode is set to CC Slew RatePriority.

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 CurrentSlew Rate

Sets the falling current slew rate. Onlyapplicable if V-I Mode is set to CC Slew RatePriority.

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)


InternalResistanceSettings

Sets the internal resistance of the power supply.

F-08 0.000~0.833(PSW 30-36)0.000~0.417(PSW 30-72)

0.000~0.278(PSW 30-108)0.000~5.926(PSW 80-13.5)0.000~2.963(PSW 80-27)0.000~1.975(PSW 80-40.5)0.000~22.222 (PSW 160-7.2)0.000~11.111(PSW 160-14.4)0.000~7.407(PSW 160-21.6)


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Bleeder Control Bleeder control turns ON/OFF the bleederresistor. Bleeder resistors discharge the filtercapacitors 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 isassociated with alarm sounds and keypad entrysounds.

F-10 0 = ON, 1 = OFF


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USB/GPIB Settings

Front Panel USBState

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

F-20 0 = Absent, 1 = Mass Storage

Rear Panel USBState

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

F-210 = Absent, 2 = USB-CDC,3 = GPIB-USB adapter

Rear Panel USBMode

Sets the rear panel USB mode.

F-220 = Disable, 1 = GPIB-USBadapter (for GUG-001),2 = USB CDC

GPIB Address Sets the GPIB address.

F-23 0~30


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LAN Settings

MAC Address-1~6

Displays the MAC address 1~6. This setting isnot 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.


IP Address-1~4 Sets the default IP address. IP address 1~4splits 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 splitinto 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 addressis 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 splitinto 4 parts.

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

Sockets active Enables WebSocket connections.


Web server active Turns Web server control on/off.F-59 0 = Disable, 1 = Enable


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Web Passwordactive

Turns a web password on/off.


Web Password Sets the Web password.

F-61 0000 ~ 9999

System Settings

Factory Set Value Returns the PSW to the factory default settings.

See page139 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 testcommand build date.

F-89

0, 1 = PSW version2, 3 = PSW build year4, 5 = PSW build month/day6, 7 = Keyboard CPLD version8, 9 = Analog-Control CPLD

versionA, B = ReservedC, D = Kernel build yearE, F = Kernel build month/day

G, H = Test command versionI, J = Test command build yearK, L = Test command build

month/day


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Power On Configuration Settings

CV Control Sets the constant voltage (CV) control modebetween local and external voltage/resistancecontrol. For external voltage control, see page104 (External Voltage Control of VoltageOutput)and page109 (External ResistanceControl of Voltage Output).

F-90 0= Panel control (local)1 = External voltage control

2 = External resistance control(Ext-R 10k= Vo,max)3 = External resistance control

(Ext-R 10k = 0)

CC Control Sets the constant current (CC) control modebetween local and external voltage/resistancecontrol. For details on external voltage control,see

PSW-Series ENG Manual

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