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

Multi-Range DC Power Supply

PSW Series

USER MANUAL

GW INSTEK PART NO. 82SW-80400M01

ISO-9001 CERTIFIED MANUFACTURER

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

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

Good Will Instrument Co., Ltd.

No. 7-1, Jhongsing Rd., Tucheng Dist., New Taipei City 236, Taiwan.

SAFETY INSTRUCTIONS
Table of Contents
SAFETY INSTRUCTIONS ...................................................	5
GETTING STARTED ...........................................................	9
PSW Series Overview ...........................	10
Appearance ..........................................	14
Theory of Operation.............................	20
OPERATION....................................................................	31
Set Up..................................................	33
Basic Operation ...................................	43
Parallel / Series Operation...................	54
Test Scripts ..........................................	66
CONFIGURATION...........................................................	74
Configuration.......................................	75
ANALOG CONTROL ........................................................	88
Analog Remote Control Overview.........	89
Remote Monitoring ............................	104
COMMUNICATION INTERFACE .....................................	107
Interface Configuration ......................	108
MAINTENANCE .............................................................	112
FAQ ...............................................................................	114
APPENDIX .....................................................................	116
PSW Default Settings .........................	116
Error Messages & Messages ..............	118
LCD Display Format ...........................	118

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PSW Series User Manual
PSW Specifications ............................	119
PSW Dimensions ...............................	128
Declaration of Conformity ..................	131
INDEX............................................................................	132

4

SAFETY INSTRUCTIONS

SAFETY INSTRUCTIONS

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

Safety Symbols

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

WARNING	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

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PSW Series User Manual

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

Safety Guidelines

General

Guideline

CAUTION

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.

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			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		Location: Indoor, no direct sunlight, dust free,
	Environment		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		Location: Indoor
	environment		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.

7

Earth

Neutral Live (Phase)

PSW Series User Manual

Power cord for the United Kingdom

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

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

WARNING: THIS APPLIANCE MUST BE EARTHED

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

Green/ Yellow:

Blue:

Brown:

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.

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GETTING STARTED

GETTING STARTED

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

PSW Series Overview.......................................................	10
Series lineup..............................................................................................................	10
Main Features...........................................................................................................	11
Accessories................................................................................................................	11
Package Contents.....................................................................................................	13
Appearance .....................................................................	14
PSW Front Panel .....................................................................................................	14
Rear Panel .................................................................................................................	17

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PSW Series User Manual

PSW Series Overview

Series lineup

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

Model name	Type	Voltage Rating	Current Rating	Power
PSW 30-36	Type I	0~30V	0~36A	360W
PSW 80-13.5	Type I	0~80V	0~13.5A	360W
PSW 30-72	Type II	0~30V	0~72A	720W
PSW 80-27	Type II	0~80V	0~27A	720W
PSW 30-108	Type III	0~30V	0~108A	1080W
PSW 80-40.5	Type III	0~80V	0~40.5A	1080W

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

360 Watt models	720 Watt models	1080 Watt models
Type I	Type II	Type III

			Multi-Range DC Power Supply				Voltage
PSW 30-36						360W
VSR						W
C V
RMT						V
ALM	20	40	60	80	100	%W	Current
DLY						W
C C
						A
ISR
Function		OVP/OCP			Set		Output
Test		Lock/Local		PWR DSPL

			Multi-Range DC Power Supply				Voltage
PSW 30-72						720W
VSR						W
C V						V
RMT
ALM	20	40	60	80	100	%W	Current
DLY						W
C C
						A
ISR
Function		OVP/OCP			Set		Output
Test		Lock/Local		PWR DSPL

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GETTING STARTED

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

Accessories

Standard	Part number	Description
Accessories
	Region dependant	User manual
	4323-30600101	Power cord (Type I/II)

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			PSW Series User Manual
		4320-91001101	Power cord (Type III)
		63SC-XF100201	Output terminal cover: top
		63SC-XF100301	Output terminal cover:
			bottom
		GTL-123	Test leads: 1x red, 1x black
		PSW-004	Basic Accessory Kit:
			M4 terminal screws and
			washers x2, M8 terminal
			bolts, nuts and washers x2,
			Air filter x1, Analog control
			protection dummy x1,
			Analog control lock level x1
	Optional	Part number	Description
	Accessories
		GET-001	Extended terminal
		PSW-001	Accessory Kit:
			Pin contact x10, Socket x1,
			Protection cover x1
		PSW-002	Simple IDC
			Tool
		PSW-003	Contact
			Removal Tool
		GRA-410-J	Rack mount adapter (JIS)
		GRA-410-E	Rack mount adapter (EIA)
		GUG-001	GPIB to USB adapter
		GTL-246	USB Cable
		57RG-30B00201	Large filter (Type II/III)
	Download	Name	Description
		psw_cdc.inf	USB driver

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GETTING STARTED

Package Contents

Check the contents before using the PSW.

Opening the box

Contents (single unit)

Main unit

Output terminal cover (top x1, bottom x1)

Test leads (red x1, black x1)

M4 terminal screws and washers x2

Air filter x1

Power cord x1 (region dependent)

Analog control protection dummy x1

Analog control lock lever x1

M8 terminal bolts, nuts and washers X2

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PSW Series User Manual

Appearance

PSW Front Panel

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

PSW 80-40.5, PSW 30-108 (1080W)	PSW 80-13.5,
	PSW 30-36 (360W)
	PSW 30-36			Multi-Range DC Power Supply Voltage
							360W
	VSR						W
	C V
							V
	RMT
	ALM	20	40	60	80	100	%W
	DLY						Current
							W
	C C
							A
	ISR
	Function		OVP/OCP			Set	Output
	Test		Lock/Local PWR DSPL

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GETTING STARTED

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

	The Function key is used to
	configure the power supply.
	Set the over current or over
	voltage protection levels.
	Sets the current and voltage limits.
	Used to run customized scripts for
	testing.
Lock/Local	Locks or unlocks the panel keys to
	prevent accidentally changing
	panel settings.
	Toggles the display from viewing
	V/AV/WA/W.

Display

Indicators

ALM

C C

Voltage Slew Rate Constant Voltage Mode Remote Control Mode Alarm on

Delay Output Constant Current Mode Current Slew Rate

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PSW Series User Manual

40

100

Voltage Knob

Current Knob

Current

Output

USB

Power Switch

Power bar

Indicates the current power output as a percentage.

Sets the voltage.

Sets the current.

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

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

Used to turn the power on/off.

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GETTING STARTED

Rear Panel

PSW 80-27, PSW 30-72 (720W)
PSW 80-40.5, PSW 30-108 (1080W)	PSW 80-13.5,
	PSW 30-36 (360W)

AC Input

SER.NO. LABEL

N L

LAN

AC	100	240V
47	63Hz	1500VA MAX.

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	PSW Series User Manual
Analog Control	Standard 26 pin MIL connector
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.

USB B port

Fans

Ethernet Port

Chassis ground

Sense (-) and Sense (+) terminals.

The USB B port is used for remote control.

Temperature controlled fans

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

Line Voltage

Input

(Type I/TypeII)

Type I: PSW 30-36/80-13.5

Type II: PSW 30-72/80-27

Voltage Input: 100~240 VAC

Line frequency: 50Hz/60 Hz

(Automatically switchable)

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GETTING STARTED

Line Voltage

Input

(Type III)

N L	Type III: PSW 30-108/80-40.5
	Voltage Input: 100~240 VAC
	Line frequency: 50Hz/60 Hz
	(Automatically switchable)

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PSW Series User Manual

Theory of Operation

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

Operating Area Description

Description	The PSW power supplies are regulated DC
	power supplies with a high voltage and current
	output. These operate in CC or CV mode
	within a wide operating range limited only by
	the output power.
	The operating area of each power supply is
	determined by the rated output power as well
	as the voltage and current rating. For example
	the operating area and rated power output for
	the PSW 30-36 is shown below.

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

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

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GETTING STARTED

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

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

PSW 80V Series Operating Area

	4.5	9.0	13.5			27		40.5
90
80									80
60							Type I
							Type II
40							Type III
20									26.6
0
0	5	10	15	20	25	30	35	40	45

Current (A)

PSW 30V Series Operating Area

	12	24	36		72		108
	35
	30						30
<![if ! IE]> <![endif]>(V)	25					Type I
	20					Type II
<![if ! IE]> <![endif]>Voltage
						Type III
	15
	10						10
	5
	0
	0	20	40	60	80	100	120

Current (A)

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PSW Series User Manual

CC and CV Mode

CC and CV mode When the power supply is operating in Description 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 (ISET) 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 (ISET), the set voltage (VSET), the load resistance (RL) and the critical resistance (RC). The critical resistance is

determined by VSET/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 VSET voltage but the current will be less than ISET. If the load resistance is reduced

to the point that the current output reaches the ISET level, the power supply switches to CC mode.

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GETTING STARTED

Conversely the power supply will operate in CC mode when the load resistance is less than the critical resistance. In CC mode the current

output is equal to ISET and the voltage output is less than VSET.

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	PSW Series User Manual
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

Bleeder Control

Description

The PSW DC power supplies employ a bleed

resistor in parallel with the output terminals.

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

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GETTING STARTED

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

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

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

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

the connected battery when the unit is off.

Internal Resistance

Description

Internal

Resistance Range

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

Unit Model	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

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PSW Series User Manual

Alarms

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

OVP	Overvoltage protection (OVP) prevents a high
	voltage from damaging the load.
OCP	Overcurrent protection prevents high current
	from damaging the load.
OTP	Over temperature protection protects the
	instrument from overheating.
Power Switch Trip	When the Power Switch Trip configuration
	setting is enabled, the power supply will
	automatically shut down when a protection
	setting has been tripped (OCP, OVP, OTP).
Alarm output	Alarms are output via the analog control
	connector. The alarm output is an isolated
	open-collector photo coupler output.

Considerations

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

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

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GETTING STARTED

Pulsed or Peaked When the load has current peaks or is pulsed, it loads 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.

Reverse Current: When the power supply is connected to a Regenerative load 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.

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PSW Series User Manual

	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.

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-current- protection diode in series between the power supply and load.

Ensure the reverse withstand voltage of the diode CAUTION 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.

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GETTING STARTED

Grounding

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

Floating

As the output terminals are floating, the load

and all load cables must have an insulation

capacity that is greater than the isolation

voltage of the power supply.

If the insulation capacity of the load and load WARNING cables is not greater than the isolation voltage of

the power supply, electric shock may occur.

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PSW Series User Manual

Grounded output If the positive or negative terminal is connected terminal to the protective ground terminal, the

insulation capacity needed for the load and load cables is greatly reduced. The insulation capacity only needs to be greater than the maximum output voltage of the power supply with respect to ground.

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

short circuit.

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