Instek PEL-3021, PEL-3041, PEL-3111 User's Manual

DC Electronic Load

PEL-3000 Series

USER MANUAL

VERSION: 1.10

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.

Table of Contents

Table of Contents

SAFETY INSTRUCTIONS ................................................... 3

GETTING STARTED ........................................................... 8

PEL-3000 Series Introduction ............... 10

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

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

First Time Use Instructions ................. 24

OPERATION .................................................................... 48

Basic Operation ................................... 51

Basic Configuration ............................. 63

Advanced Configuration Settings ......... 70

Step Resolution Configuration ............. 76

Protection Settings .............................. 79

System Settings ................................... 83

Go-NoGo ............................................. 87

Program ............................................... 90

Sequence ............................................. 98

Save Recall ......................................... 117

EXTERNAL CONTROL .................................................... 131

Analog Control ................................... 132

Parallel Operation .............................. 150

REMOTE CONTROL ....................................................... 157

Interface Configuration ...................... 158

FAQ ............................................................................... 170

APPENDIX ..................................................................... 172

Replacing the Dust Filter ................... 174

1

PEL-3000 User Manual

Replace the Clock Battery ................... 175

GPIB Installation ................................ 176

PEL-3000 Default Settings .................. 177

Frame Control Connector Contacts .... 180

Operating Mode Description .............. 185

Operating Area................................... 190

PEL-3000 Specifications ..................... 194

PEL-3000 Dimensions ........................ 205

Declaration of Conformity .................. 208

INDEX ............................................................................ 209

2

SAFETY INSTRUCTIONS

WARNING

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

CAUTION

Caution: Identifies conditions or practices that
could result in damage to the instrument or to
other properties.

DANGER High Voltage

Attention Refer to the Manual

Earth (ground) Terminal

Frame or Chassis Terminal

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 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.

3

PEL-3000 User Manual

General
Guideline

CAUTION

 Do not place any heavy object on the

instrument. Note: Only 2 units can be stacked
vertically.

 Avoid severe impact or rough handling that

leads to damaging the instrument.

 Do not discharge static electricity to the

instrument.

 Use only crimped wires, not bare wires, for the

terminals.

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

are qualified.

 The equipment is not for measurements

performed for CAT II, III and IV.

(Measurement categories) EN 61010-1:2010 specifies the
measurement categories and their requirements as follows. The
instrument 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.

Safety Guidelines

4

SAFETY INSTRUCTIONS

Power Supply

WARNING

 AC Input voltage range:

100~120VAC/200~240VAC
(90~132VAC/180~250VAC)

 Frequency: 47~63Hz
 Power:

PEL-3021: 90VA Max
PEL-3041: 110VA Max
PEL-3111: 190VA Max
PEL-3211: 230VA Max

 To avoid electrical shock connect the protective

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

Cleaning

 Disconnect the power cord before cleaning.
 Use a soft cloth dampened in a solution of mild

detergent and water. Do not spray any liquid.

 Do not use chemicals containing harsh material

such as benzene, toluene, xylene, and acetone.

Operation
Environment

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

almost non-conductive pollution (Note below)

 Temperature: 0°C to 40°C
 Humidity: 0 to 85% RH

5

PEL-3000 User Manual

(Pollution Degree) EN 61010-1:2010 specifies the pollution degrees
and their requirements as follows. The instrument falls under
degree 2.

Pollution refers to “addition of foreign matter, solid, liquid, or
gaseous (ionized gases), that may produce a reduction of dielectric
strength or surface resistivity”.

 Pollution degree 1: No pollution or only dry,

non-conductive pollution occurs. The pollution
has no influence.

 Pollution degree 2: Normally only non-

conductive pollution occurs. Occasionally,
however, a temporary conductivity caused by
condensation must be expected.

 Pollution degree 3: Conductive pollution occurs,

or dry, non-conductive pollution occurs which
becomes conductive due to condensation which
is expected. In such conditions, equipment is
normally protected against exposure to direct
sunlight, precipitation, and full wind pressure,
but neither temperature nor humidity is
controlled.

Storage
environment

 Location: Indoor
 Temperature: -20°C to 70°C
 Humidity: <90% RH

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.

6

SAFETY INSTRUCTIONS

Green/ Yellow:

Earth

Blue:

Neutral

Brown:

Live (Phase)

Power cord for the United Kingdom

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

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

WARNING: THIS APPLIANCE MUST BE EARTHED
IMPORTANT: The wires in this lead are coloured in accordance with the
following code:

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

The wire which is coloured Green & Yellow must be connected to
the Earth terminal marked with either the letter E, the earth symbol

or coloured Green/Green & Yellow.

The wire which is coloured Blue must be connected to the terminal
which is marked with the letter N or coloured Blue or Black.

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

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

This cable/appliance should be protected by a suitably rated and
approved HBC mains fuse: refer to the rating information on the
equipment and/or user instructions for details. As a guide, a cable
of 0.75mm2 should be protected by a 3A or 5A fuse. Larger
conductors would normally require 13A types, depending on the
connection method used.

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

7

PEL-3000 User Manual

PEL-3000 Series Introduction .......................................... 10

Model Line Up ......................................................................................................... 10

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

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

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

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

PEL-3000 Front Panel ............................................................................................ 15

(PEL-3021/PEL-3041) .............................................................................. 15

(PEL-3111) .................................................................................................. 15

(PEL-3211 Booster Pack) ......................................................................... 16

Rear Panel ................................................................................................................. 20

PEL-3021 / PEL-3041 .............................................................................. 20

(PEL-3111) .................................................................................................. 20

GETTING STARTED

This chapter provides a brief overview of the
PEL-3000, the package contents, instructions for
first time use and an introduction to the front
panel, rear panel and GUI.

8

GETTING STARTED

(PEL-3211 Booster Pack) ......................................................................... 21

Display ....................................................................................................................... 23

First Time Use Instructions ............................................. 24

Rack Mount Kits ...................................................................................................... 24

Power Up and Self Test .......................................................................................... 27

Load Default Settings .............................................................................................. 28

Setting the Date and Time ...................................................................................... 28

Load Wiring .............................................................................................................. 29

Load Wire Connections .......................................................................................... 32

Using the Front Panel Input Terminals ................................................................ 33

Using the Rear Panel Input Terminals .................................................................. 34

Using the Terminal Cover ...................................................................................... 35

Remote Sense ........................................................................................................... 38

Firmware Update ..................................................................................................... 39

Conventions .............................................................................................................. 41

Help Menu ................................................................................................................ 47

9

PEL-3000 User Manual

Model

Operating Voltage (DC)

Current

Power

PEL-3021

1.5V~150V

35A

175W

PEL-3041

1.5V~150V

70A

350W

PEL-3111

1.5V~150V

210A

1050W

Booster Model

Operating Voltage (DC)

Current

Power

PEL-3211

1.5V~150V

420A

2100W

PEL-3000 Series Introduction

The PEL-3000 Series is a family of high performance DC electronic
loads positioned to test a wide range of different power sources.
The DC electronic loads are fully programmable to simulate
anything from basic static loads to complex dynamic loads. With
the ability to operate independently or in parallel, the PEL-3000
Series is extremely robust and capable of molding to any test
environment.

Please note that throughout this manual the term ―PEL-3000‖ refers
to any one of the models in the series lineup, unless specifically
stated otherwise.

Model Line Up

There are a total of 3 DC electronic load models and 1 booster pack
model.

10

Main Features

Performance

 High slew rates of up to 16A/μS(PEL-3111) for a

fast response speed

 High capacity when used in parallel:

5250W, 1050A (PEL-3111 x 5)/
9450W, 1890A (PEL-3111 + PEL-3211 x 4)

 High resolution – 16 bit

Features

 7 operating modes: CC, CV, CR, CP, CC+CV,

CR+CV, CP+CV

 Independent and parallel operation
 Fully programmable with normal and fast

sequences

 Soft start
 Dynamic mode
 OCP, OVP and other protection features
 Remote sense
 Integrated meter
 Rack-mountable
 Load booster

Interface

 USB, RS232 and GPIB
 External voltage or resistance control
 Front panel trigger out BNC
 Front panel current monitoring BNC
 Analog external control

GETTING STARTED

11

PEL-3000 User Manual

Standard
Accessories

Part number

Description
82EL-31110MA1

Quick Start Guide

82EL-31110EA1

User / Programming
manual CD

Region dependant

Power cord

PEL-011

Load input terminal Cover

PEL-012

Terminal fittings: 2 sets of
bolts/nuts/springs/washers
(type: M8)

M8 x 20

Spring washer
Flat washer

M8 nut

Optional
Accessories

Part number

Description

3813-030D0501

CR123A 3V lithium battery
for clock.

GRA-413-E

Rack mount bracket for
booster PEL-3211/EIA

GRA-413-J

Rack mount bracket for
booster PEL-3211/JIS

GRA-414-E

Rack mount frame for PEL­3021, PEL-3041, PEL­3111/EIA

Accessories

12

GETTING STARTED

GRA-414-J

Rack mount frame for PEL­3021, PEL-3041, PEL­3111/JIS

GTL-255

300mm Frame Link Cable
(for linking units that are
stacked)

GTL-248

GPIB cable, 2.0m

GTL-246

USB cable, Type A - Type B

PEL-010

Dust Filter

PEL-004

GPIB option

13

PEL-3000 User Manual

Opening the box

Contents
(single unit)

 Main unit
 Quick Start manual
 User / Programming

manual CD

 Terminal fittings
 Power cord x1 (region

dependent)

 Calibration certificate

Package Contents

Check the contents before using the instrument.

14

GETTING STARTED

I MON OUT TRIG OUT

1.5 - 150V

175W

0 - 35A

P0

P1

P4

P7

CAL.

P2

P5

P8

Lock

P3

P6

P9

Utility

Local

File

0

1

4

7

2

5

8

3

6

9

EnterClear

Shift

Preset

Load

On/
Off

Main

Help

FUNC

Short

Air inlet LCD Display Power key

FUNC/File

Help/Utility

Short

Load On/Off

USB Port, Preset
and Shift keys

Number pad, Clear/
Lock and Enter keys

Main/Local

Scroll wheel

Function keys

Input
terminals

I MON OUT,
TRIG OUT

P0

P1

P4

P7

CAL.

P2

P5

P8

Lock

P3

P6

P9

Utility

Local

File

0

1

4

7

2

5

8

3

6

9

EnterClear

Shift

Preset

Load

On/
Off

Main

Help

FUNC

Short

TRIG
OUT

I MON

OUT

1.5 - 150V

1050W

0 - 70A

Appearance

PEL-3000 Front Panel

(PEL-3021/PEL-3041)

(PEL-3111)

15

PEL-3000 User Manual

LINK STBY

Air Inlet

The air inlet has a removable dust filter

LCD display

3.5 inch LCD display

Function keys

The function keys directly correspond to the soft
menu keys at the bottom of the display.

ON/STBY

Turns the unit on or puts the unit
into standby mode. Use the power
switch on the rear panel to turn
the unit off.

Main/Local

Main

Main: Sets the operating mode:
CC, CV, CR, CP mode.

Local

Main

Shift

Local (Shift + Main): Puts
the instrument back into
local mode from remote
mode.

FUNC/File

FUNC

FUNC: Sets the program function,
sequence function or other special
functions.

(PEL-3211 Booster Pack)

16

GETTING STARTED

File

FUNC

Shift

File (Shift + FUNC):
Accesses the file system.

Help/Utility

Help

Help: Access the help menu.

Utility

Help

Shift

Utility (Shift + Help):
Access the utility menu.

Short

Short

Pressing the Short key will
simulate shorting the input
terminals.

The Short key will be lit when
active.

Load on/off

Load

On/

Off

Turns the load on or off.

The Load On/Off key will be lit
when active.

Scroll wheel

Use the scroll wheel to navigate
the menu system or to edit
parameters. See page 41 for usage
details.

Enter

Enter

Press the Enter key to select
highlighted menu items.

17

PEL-3000 User Manual

Number pad

P0

P1

P4

P7

CAL.

P2

P5

P8

Lock

P3

P6

P9

0

1

4

7

2

5

8

3

6

9

Clear

Number pad: Used to enter numerical values.

P0~P9 (Preset + Number keys): Loads one of 10
preset settings.

Clear/Lock

Lock

Clear

Clear: Clears the current
parameter values.

Lock (Shift + Clear): Locks the
front panel keys and selector knob.

Shift

Shift

Shift: Used in conjunction with
other keys to select secondary
functions.

Preset

Preset

Used in conjunction with the
number pad to save or load preset
settings P0 to P9.

USB Port

USB A port. Used for save and
recall functions.

18

GETTING STARTED

Front panel input
terminals

1.5 - 150V

175W

0 - 35A

Negative terminal.

Positive terminal.

IMON Out

I MON OUT

Current monitor BNC terminal:
Output connector used to monitor
the current by outputting a
voltage. An output voltage of 1V
corresponds to the full scale
current for the H and L ranges.

0.1V corresponds to the full scale
current in the M range.

TRIG OUT

TRIG OUT

Trigger out BNC terminal:
Outputs a pulse signal during
sequence or dynamic operation.
The trigger signal has a 5V output
with a pulse width of a least 2us
and an impedance of 500Ω.

19

PEL-3000 User Manual

47 - 63 Hz

90 VA MAX.

AC

100 - 120 VAC
200 - 240 VAC

FRAME CONT

J 1

J 2

SER. NO. LB

RS232C

GPIB

WARNING

TO AVOID ELECTRIC SHOCK THE POWER CORD

DO NOT REMOVE COVERS.

NO OPERATOR SERVICEABLE COMPONENTS INSIDE.

PROTECTIVE GROUNDING CONDUCTOR MUST BE

REFER SERVICING TO QUALIFIED PERSONNEL.

CONNECTED TO GROUND.

Remote sense
inputs

Frame control ports,
J1, J2

RS232C port

USB port

USB device port

Exhaust fanGPIB Power socket

Rear panel
inputs

P0

P1

P4

P7

CAL.

P2

P5

P8

Lock

P3

P6

P9

Utility

Local

File

0

1

4

7

2

5

8

3

6

9

EnterClear

Shift

Preset

Load

On/
Off

Main

Help

FUNC

Short

TRIG
OUT

I MON

OUT

1.5 - 150V

1050W

0 - 70A

Rear Panel

PEL-3021 / PEL-3041

(PEL-3111)

20

GETTING STARTED

RS232C Port

GPIB

USB B

The USB B, RS232C and GPIB port are used for
remote control.

USB B port

RS232C 9 pin

DSUB port.

GPIB 24 pin
female.

Frame control
ports, J1, J2

FRAME CONT

J 1

J 2

J1: The J1 connector is assigned to external control.

J2: The J2 connector is used for parallel operation
control.

(PEL-3211 Booster Pack)

21

PEL-3000 User Manual

Exhaust fan

The exhaust fan is used to expel the heat from the
unit. Please ensure there is at least 20cm distance
between any object and the fan.

Rear Panel Input
terminals

Rear Panel Input Terminals. Electrically connected
to the front panel input terminals. Accepts M8
bolts or M4/M3 sized screws. See page 34 for
connection details.

Remote Sensing
Terminals

Sensing terminals for remote sense. See page 35.

Accepts M3 sized screws.

Power Socket

Power Socket:
100~120V, 200~240V
47~63Hz.

Power Switch

Turns the unit on/off.

USB A

USB A Slave port. USB 1.1/2.0

22

Display

ModeCVI Range

H 35A

V Range

L 15V

Function

Static

Configure

0.000

V

0.000

A

0.00

w

SlewRate 2500.00

CC B Value 0.000

CC A Value 0.000

LOADRS232

A Value

Fine

03/Sep/2012

mA/us

A

A

Date

Setting area

Operation
status panel

Measurement

area

Mainframe status panel

Softkeys

Setting area

The setting area is used to display and edit the
settings for the current mode/function.

Measurement
area

Displays the voltage, current and power values.

Date

Displays the date.

Mainframe status
panel

The mainframe status panel displays the status of
the load, remote control and short function.

When an icon is green it indicates that the function
is off. When the icon is orange, the function is on.

Operation Status
Panel

This status panel is used to display the status of
the current mode.

Soft-keys

The soft-key menus are used to select different
functions or parameters.

GETTING STARTED

23

PEL-3000 User Manual

Description

The PEL-3000 has a number of rack mount
options for installation. The GRA-413 rack
mounts are suitable for the PEL-3211 booster
pack. The GRA-414 rack mounts are capable of
holding 1x PEL-3111 or
2x PEL-3021/3041 units.

For installation details, please see the GRA-413
and GRA-414 Rack Mount Assembly Manual.

Please see your distributor for which rack
mount is suitable for your application.

First Time Use Instructions

Use the procedures below when first using the PEL-3000 to install
the rack mount kit, power up the instrument, set the internal clock,
restore the factory default settings and check the firmware version.
Lastly, the Conventions section will introduce you to the basic
operating conventions used throughout the user manual.

Rack Mount Kits

24

GETTING STARTED

GRA-413-E
(IEA standard)

128

532

.

5

482

.

6

GRA-413-J
(JIS standard)

149

532

.

5

482

.

6

25

PEL-3000 User Manual

GRA-414-E
(IEA standard)

132

382

.

5

477

.

6

GRA-414-J
(JIS standard)

149

382

.

5

477

.

6

26

GETTING STARTED

Steps

1. Insert the AC power cord into the power

socket.

2. Turn the external

power switch on.
(O → —)

3. If the unit doesn’t turn on, press the

On/Standby key.

 The ON/STBY key will go from standby (red)

to on (green).

4. The unit will show the splash screen and then

load the settings from when the unit was last
powered down.

Note

If the PEL-3000 fails to start up properly or does
not turn on, please see you local distributor.

Power Up and Self Test

27

PEL-3000 User Manual

Description

When first using the PEL-3000, recall the
factory default settings to ensure the unit is in a
known state. See page 177 for a list of the
default settings.

Operation

1. Press

Shift

+

File

FUNC

.

Select Media/Default[F1].
Select Factory Default[F2].

Media

Default

Factory
Default

Save Recall

LOADRS232

A Value

03/Sep/2012

Load Default Setup

CC
35A
15V

Static

Recall the Default Settings!

Pressing F2 Again Will

Warning!!

Description

The date and time settings are used to time­stamp files when saving files.

 The date is shown on top of the display.

Operation

1. Press

Shift

+

Utility

Help

> Time Set[F4] to set

the date and time.

Settings:

Month, Day, Year, Hour, Minute

Load Default Settings

Setting the Date and Time

28

System

Info

Load Interface Time Set

LOADRS232

03/Sep/2012

Other

9

Hour 0

Year 2012

Minute

Day

Month

9

3

Date/Time

Date

Load Wiring

Wire Gauge
considerations

Before connecting the unit to a power source,
the wire gauge must be taken into account.
Load wires must be large enough to resist
overheating when a short-circuit condition
occurs as well as to maintain a good regulation.
The size, polarity and length of a wire are all
factors in determining if a wire will withstand
short circuiting.

Wires that are selected must be large enough to
withstand a short circuit and limit voltage
drops to no more than 2V per wire. Use the
table below to help make a suitable selection.

AWG
Gauge

Conduct or
Diameter
mm

Ohms per
km

Max amps
for chassis
wiring

0000

11.684

0.16072

380

000

10.4038

0.2027

328

00

9.26592

0.25551

283

0

8.25246

0.32242

245

1

7.34822

0.40639

211

GETTING STARTED

29

PEL-3000 User Manual

2

6.54304

0.51266

181

3

5.82676

0.64616

158

4

5.18922

0.81508

135

5

4.62026

1.02762

118

6

4.1148

1.29593

101

7

3.66522

1.6341

89

8

3.2639

2.0605

73

9

2.90576

2.59809

64

10

2.58826

3.27639

55

11

2.30378

4.1328

47

12

2.05232

5.20864

41

13

1.8288

6.56984

35

14

1.62814

8.282

32

Load Line
Inductance
Considerations

When using the PEL-3000 load generator,
voltage drop and voltage generated due to load
line inductance and current change must be
taken into account. Extreme changes in voltage
may exceed the minimum or maximum voltage
limits. Exceeding the maximum voltage limit
may damage the PEL-3000.

To determine the voltage generated, the
following equation can be used.

E = L x (∆ I / ∆ T)

E= voltage generated
L=load line inductance

∆ I= change of current (A)
∆ T= time (us)

Load line inductance (L) can be approximated

as 1uH per 1 meter of wire. (∆ I / ∆ T) is the

slew rate in A/us.

30

GETTING STARTED

Current

Voltage

time

time

∆I

∆T

E

Min. V

The diagram above shows how changes in current
can affect voltage.

Limiting Load line
inductance

Load line inductance can be reduced in two
ways.

1. Ensure load wires are as short as possible
and twist the positive and negative load wires
together.

2. Current change can be limited by limiting
the slew rate or response speed when
switching in CR and CC mode.

―Twisted pair‖ will be shown on any

connection diagram where the load wires
should be twisted together.

DUT

-

+

Electronic

Load

+

-

Twisted

pair

DUT

-

+

Electronic

Load

+

-

31

PEL-3000 User Manual

Description

The PEL-3000 has input terminals on both the
front and rear panels.

Follow the procedures below for all load
connections. Please adhere to the following
precautions to ensure your safety and to
protect the unit from damage.

Connection

When connecting the PEL-3000 to the DUT,
make sure that the polarity of the connection
between the DUT and the unit matches.

Ensure that the maximum input voltage is not
exceeded. The maximum input voltage is 150
volts.

DUT

-

+

Electronic

Load

+

-

Caution

If the polarity to the input terminals is reversed,
the reverse voltage protection function is tripped.
The reverse voltage protection function is tripped
when reverse voltages greater than -0.3V are
detected.

Warning

Do not touch any of the input terminals when the
unit is on.

Warning

Connecting the input terminals to the wrong
polarity can damage the DUT or the PEL-3000.

Warning

The front panel and rear panel input terminals are
physically connected. Any voltage that is input to
one set of terminals will also appear on the other
set of terminals.

Load Wire Connections

32

GETTING STARTED

Description

The front panel input terminals feature
polarity-distinct caps and accept M6 sized
crimped terminals.

Caution

The front panel input terminals on the PEL-3000
are physically connected to the rear panel
terminals.

Steps

1. Turn the power off from the rear panel or put

the unit into standby mode.

2. Turn the power off from the DUT.

3. Connect the load wires to the input terminals:

 Connect the positive (+) input terminal on the

load generator to the high potential output of
the DUT.

 Connect the negative (-) input terminal to the

low potential output of the DUT.

+ potential

- potential

Negative

terminal

Positive

terminal

Using the Front Panel Input Terminals

33

PEL-3000 User Manual

Description

The rear panel input terminals accept up to
M8-sized crimped terminals. The rear
terminals come with a load input terminal
cover for safety.

Caution

The front panel input terminals on the PEL-3000
are physically connected to the rear panel
terminals.

Steps

1. Turn the power off from the rear panel or put

the unit into standby mode.

2. Turn the power off from the DUT.

3. Connect the load wires to the input terminals:

 Connect the positive (+) input terminal on the

load generator to the high potential output of
the DUT.

 Connect the negative (-) input terminal to the

low potential output of the DUT.

+ potential

- potential

Using the Rear Panel Input Terminals

34

GETTING STARTED

Description

The rear panel terminal cover should be used
to prevent electric shock. The rear panel
terminal covers should always be used when
connecting a load to the rear panel terminals.
As the front panel and rear panel terminals are
physically connected, the terminal cover
should also be used as a safety measure when a
DUT is connected to the front terminals

Caution

Ensure the power is off before making any
connections to the PEL-3000.

Note

In the following diagrams, the cable wiring is not
shown for clarity.

1. Remove the screw holding the top cover to the

bottom cover.

1

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

the output terminals.

3. Place the top terminal cover over the bottom

cover.

Using the Terminal Cover

35

PEL-3000 User Manual

2

Detail

3

4. Use your thumb to slide the terminal covers

shut, as shown in the diagram below.

4

36

GETTING STARTED

5. When the top and bottom covers are flush,

reinsert the screw that was removed in step 1.

5

37

Remote Sense

Description

Remote sense can be used to help compensate
for long cable length. The longer the cable, the
higher the potential resistance and inductance,
therefore a short cable is best. Twisting the
cable can help reduce induced inductance and
using the Vsense terminals compensates the
voltage drop seen across the load leads,
especially leads with higher resistance. This is
useful when used in CV, CR or CP mode.

Steps

1. Turn the power off from the rear panel or put

the unit into standby mode.

2. Turn the power off from the DUT.

3. Connect the sense wires to the sense terminals:

 Connect the positive sense (+S) terminal to the

high potential output of the DUT.

 Connect the negative sense (-S) terminal to the

low potential output of the DUT.

DUT

-

+

Programable

Electronic

Load

+

-

+S

-S

Twisted

pair

PEL-3000 User Manual

38

GETTING STARTED

Description

The PEL-3000 allows the firmware to be
updated by end-users. Before using the PEL­3000, please check the GW Instek website or
ask your local distributor for the latest
firmware.

System version

Before updating the firmware, please check the
firmware version.

Operation

1. Press

Shift

+

Utility

Help

.

2. Select System/Info[F1].

3. The System information is listed on the display.

 MainFrame Ver: Mainframe firmware version.
 FPGA Ver: FPGA firmware version
 PEL-3021 SN: Serial number of the unit.
 SCPI Ver: SCPI-compatible version.

4. To view other system information, press

System[F1] and select Memo.

Firmware Update

39

PEL-3000 User Manual

System

Info

Load Interface Time Set

LOADRS232

03/Sep/2012

MainFrame Ver: x.xx.xxx

SCPI Ver: x.xx

PEL-3021 SN: ELXXXXXX

FPGA Ver: x.xx

Other

Update Firmware

1. Insert a USB drive into the USB port. Ensure

the USB drive has the firmware file located in
the root directory.

2. Press

Shift

+

File

FUNC

.

3. Select USB with the Media[F1] soft-key.

4. Press the File Utility[F5] soft-key.

5. Select the *.UPG upgrade file and press

Select[F1] twice. Once to select the file and once
to confirm.

6. Wait for the update to complete and reset the

power when prompted.

Note

Do not turn the load generator off or remove the
USB memory when the firmware is being read or
upgraded.

40

GETTING STARTED

Soft Menu keys

The F1 to F5 function keys at the bottom of the
display correspond directly to the soft-menu
keys on top.

P0

P1

P4

P7

CAL.

P2

P5

P8

Lock

P3

P6

P9

Utility

Local

File

0

1

4

7

2

5

8

3

6

9

EnterClear

Shift

Preset

Load

On/
Off

Main

Help

FUNC

Short

F1 ~ F5

function keys

Soft-menu
keys

ModeCVI Range

H 35A

V Range

L 15V

Function

Static

Configure

0.000

V

0.000

A

0.00

w

SlewRate 2500.00

CC B Value 0.000

CC A Value 0.000

LOADRS232

A Value

Fine

03/Sep/2012

mA/us

A

A

Select Sub Menu

Configure

Pressing this type of soft-menu key will enter a
submenu.

Conventions

The following conventions are used throughout the user manual.
Read the conventions below for a basic grasp of how to operate the
PEL-3000 menu system using the front panel keys.

41

PEL-3000 User Manual

Toggle Parameter
or State

Mode

CC

Function/Item

Parameter or State

This type of soft-menu icon has the
function/item on the top of the label and the
selected setting or mode on the bottom of the
label.

Repeatedly press the associated function key
(F1~F5) to cycle through each setting. For
example, repeatedly pressing the Mode soft­menu key will cycle through the CC, CR, CV
and CP modes.

Mode

CR

Mode

CC

Mode

CV

Mode

CP

For some parameters, a popup window will
also appear. Selection of the setting is the same.
Repeatedly pressing the relevant function key
(F1~F5) will cycle through each setting. The
selection on the popup window will also be
reflected on the label.

ModeCCI Range

H 35A

V Range

L 15V

Function

Static

Configure

0.000

V

0.000

A

0.00

w

SlewRate 2500.00

CC B Value 0.000

CC A Value 0.000

LOADRS232SHORT

A Value

Fine

03/09/12

mA/uS

A

A

LOW

Middle

High

0.35A

3.5A

35A

label

Popup window

Parameter selection

42

GETTING STARTED

Parameter Input

The scroll wheel, Enter key and number pad
can be used to edit parameter values.

Number pad

Scroll wheel

Enter key

P0

P1

P4

P7

CAL.

P2

P5

P8

Lock

P3

P6

P9

0

1

4

7

2

5

8

3

6

9

Clear Enter

1. Use the scroll wheel to move the cursor to the

desired parameter.

 A scroll bar is shown when there are additional

parameters off-screen.

ModeCPI Range

H 35A

V Range

L 15V

Function

Dynamic

Configure

0.000

V

0.000

A

0.00

w

Timer1 0.025

Level2 0.00

Level1 0.00

LOADRS232

Fine

03/Sep/2012

ms

W

W

Scroll bar

Cursor

2. Press the Enter key to select the parameter. The

parameter will become highlighted in white

43

PEL-3000 User Manual

3. Then use the number pad* or scroll wheel** to

edit the parameter value.

ModeCCI Range

H 35A

V Range

L 15V

Function

Static

Configure

0.000

V

0.000

A

0.00

w

SlewRate 2500.00

CC B Value

CC A Value 0.000

LOADRS232

A Value

Fine

03/Sep/2012

mA/us

A

A

1.000

Parameter

4. Press the Enter key again to finish editing the

parameter value.

Clearing a Value*

*When editing a parameter with the number
pad, pressing the

Clear

key will restore the

parameter to the previous value.

Using the Scroll
Wheel to Edit a
Parameter**

**To edit a parameter using the scroll wheel,
simply turn the scroll wheel. Clockwise
increases the value, counterclockwise decrease
the value.

Pressing the scroll wheel when a parameter is
highlighted allows you to change the step
resolution. There are two different step
resolution methods: Step Mode and Cursor
Mode.

44

GETTING STARTED

Step Mode: This is the default step resolution
method and will only be available to use when
it is applicable (Indicated by Fine or Coarse in
the Operation Status panel).

When a parameter is highlighted (step 3 above)
pressing the scroll wheel will toggle the step
resolution between fine and coarse. For details
on how to set the step resolution, see page 77.

ModeCCI Range

H 35A

V Range

L 15V

Function

Static

Configure

0.000

V

0.000

A

0.00

w

SlewRate 2500.00

CC B Value

CC A Value 0.000

LOADRS232

A Value

Fine

03/Sep/2012

mA/us

A

A

1.000

+

Coarse/Fine
adjustment

Higlighted
parameter

Cursor Mode: This method must first be
enabled before it can be used. Pressing the
scroll wheel when a parameter is highlighted
allows you to set the step resolution by a digit
value. An orange line will appear under the
currently selected digit value. Repeatedly
pressing the scroll wheel moves to the next
digit. See page 76 for details.

ModeCCI Range

H 35A

V Range

L 15V

Function

Static

Configure

0.000

V

0.000

A

0.00

w

SlewRate 2500.00

CC B Value

CC A Value 0.000

LOADRS232

A Value

Cursor

03/Sep/2012

mA/us

A

A

1.000

+

Cursor
Mode
Indicator

0.00

w

LOADRS232

A

A

Higlighted
parameter

Cursor
position

45

PEL-3000 User Manual

Entering
Alphanumeric
Characters

When renaming files, creating memos or notes,
you will be required to enter alphanumeric
characters when the character entry screen
appears.

 Only alphanumeric characters as well as space

[ ], underscore [_] and minus [-] characters
allowed.

1. Use the scroll wheel to move the cursor to the

desired character.

A B C D E F G H I J K L M
N O P Q R S T U V W X Y Z
1 2 3 4 5 6 7 8 9 0 _ 1

Rename:

Filename

Cursor

2. Press the

Enter

key or Enter Character[F1]

to select a character.

OR

Enter

Character

3. To delete a character, press Back Space[F2].

4. To save the file name or memo, press Save[F3].

46

GETTING STARTED

Help Selection

1. Press any function key or soft-menu key.

2. Press

Help

to see the help contents on that

particular function key or menu.

3. Use the scroll to navigate the help contents.

4. Press the Exit[F5] key to exit the help menu.

Help

on Help

LOADRS232

03/Sep/2012

Exit

HELP

Press F5 to exit the Help mode.
Rotate the VARIABLE knob to scroll all

the contents.

-End-

Help Menu

When any function key has been pressed or when a menu has been
opened, the HELP key can be used to display a detailed description.

47

PEL-3000 User Manual

Basic Operation .............................................................. 51

CC Mode ................................................................................................................... 51

CR Mode ................................................................................................................... 53

CR Units ...................................................................................................... 55

CV Mode ................................................................................................................... 55

CP Mode ................................................................................................................... 56

+CV Mode ................................................................................................................ 58

Turning on the Load ............................................................................................... 59

Shorting the Load .................................................................................................... 60

Short Key Configuration ........................................................................... 61

Locking the Front Panel Controls ......................................................................... 61

Basic Configuration ......................................................... 63

Select the Switching Function ................................................................................ 63

Select the Display Units for Dynamic Mode Levels .............................. 65

Select the Switching Time Configuration for Dynamic Mode ............. 67

Slew Rate ................................................................................................................... 67

CV Mode Response Speed ..................................................................................... 68

CC and CR Mode Response Speed ....................................................................... 69

Advanced Configuration Settings ..................................... 70

Soft Start Setting ...................................................................................................... 70

Von Voltage Settings ............................................................................................... 71

Von Voltage Level...................................................................................... 71

Von Voltage Latch ..................................................................................... 72

Von Voltage Delay ..................................................................................... 73

Timer Functions ....................................................................................................... 73

Count Time ................................................................................................. 73

Cut Off Time .............................................................................................. 74

Auto Load Configuration ....................................................................................... 75

Step Resolution Configuration ......................................... 76

Cursor Mode Configuration ................................................................................... 76

OPERATION

48

OPERATION

Step Mode Configuration ....................................................................................... 77

Protection Settings .......................................................... 79

OCP ........................................................................................................................... 79

OPP ........................................................................................................................... 80

UVP ........................................................................................................................... 81

OVP ........................................................................................................................... 82

UnReg ........................................................................................................................ 83

System Settings .............................................................. 84

Sound Settings .......................................................................................................... 84

Speaker Settings .......................................................................................... 84

Alarm Tone Settings .................................................................................. 85

Display Settings ........................................................................................................ 85

Contrast and Brightness ............................................................................ 85

Control Settings ....................................................................................................... 86

Language Settings .................................................................................................... 86

Go-NoGo ........................................................................ 87

Setting the Go-NoGo Limits ................................................................................. 87

Running a Go-NoGo Test ..................................................................................... 88

Program .......................................................................... 90

Program Overview ................................................................................................... 90

Create a Program ..................................................................................................... 92

Create a Program Chain .......................................................................................... 95

Running a Program or Chain ................................................................................. 96

Sequence ........................................................................ 98

Normal Sequence Overview ................................................................................... 98

Timing Edit Configuration ..................................................................... 102

Data Edit Configuration .......................................................................... 104

Running a Normal Sequence ................................................................................ 106

Fast Sequence Overview ....................................................................................... 108

Timing Edit Configuration ..................................................................... 112

Data Edit Configuration .......................................................................... 113

Running a Fast Sequence ...................................................................................... 115

Save Recall ..................................................................... 117

File Structure ............................................................................................. 117

File Types .................................................................................................. 118

Saving Files to Internal Memory ............................................................ 119

49

PEL-3000 User Manual

Saving Files to USB Memory .................................................................. 121

Recalling Files from Internal Memory ................................................... 123

Recalling Files from USB Memory ........................................................ 124

Recall Memory Safety Setting ................................................................. 126

File Utility ............................................................................................................... 127

Preset ....................................................................................................................... 128

Quick Preset Save ..................................................................................... 128

Quick Preset Recall .................................................................................. 129

Default Settings ...................................................................................................... 129

Factory Default Settings .......................................................................... 129

User’s Default Setting .............................................................................. 130

50

OPERATION

Description

In Constant Current Mode the load units will
sink the amount of current programmed.
Regardless of the voltage, the current will stay
the same. For more details on CC mode, please
see the Appendix on page 185.

Warning

If you change the mode or the range when the load
is already on, the load will be turned off
automatically.

Operation

1. Make sure the load is off.

2. Press

Main

.

3. Select CC mode with the Mode[F1] soft-key.

4. Select the current range with the I Range[F2]

soft-key.

Range:

High, Middle, Low

5. Select the voltage range with the V Range[F3]

soft-key.

Range:

High, Low

Basic Operation

The PEL-3000 supports 7 main operating modes:

CC, CC+CV;

CR, CR+CV;

CV;

CP, CP+CV

CC Mode

51

PEL-3000 User Manual

6. Set the current level parameters using the scroll

wheel and number pad.

 For Static mode, set CC A Value and/or CC B

Value.

 For Dynamic mode, set Level1 and Level2.
 The maximum and minimum current levels

depend on the selected ranges.

7. To add CV mode to CC mode (CC+CV), see

page 58.

8. Set the remaining basic configuration settings

such as the slew rate, and switching mode
settings. See page 63 for details.

Display

ModeCCI Range

H 35A

VRange

L 15V

Function

Static

Configure

0.000

V

0.000

A

0.00

w

SlewRate 2500.00

CC B Value 0.000

CC A Value 0.000

LOADRS232

A Value

Fine

03/Sep/2012

mA/uS

A

A

Mode

Current range

Voltage range

Active setting

Current setting

Current settings

Note

Basic CC mode configuration is complete. See
page 63 for more configuration options.

The current range and voltage range applies to all
the operating modes.

52

CR Mode

Description

In Constant Resistance Mode, the unit will
maintain a constant resistive load by varying
the current. CR mode uses ohms, Ω (resistance)
or siemens, S (conductance) for the setting
units. For more details on CR mode, see the
appendix on page 186.

Warning

If you change the mode or the range when the load
is already on, the load will be turned off
automatically.

Operation

1. Make sure the load is off.

2. Press

Main

.

3. Select CR mode with the Mode[F1] soft-key.

4. Select the current range with the I Range[F2]

soft-key.

Range:

High, Middle, Low

5. Select the voltage range with the V Range[F3]

soft-key.

Range:

High, Low

OPERATION

53

PEL-3000 User Manual

6. Set the resistance or conductance level

parameters using the scroll wheel and number
pad.

 For Static mode, set CR A Value and/or CR B

Value.

 For Dynamic mode, set Level1 and Level2.
 The maximum and minimum conductance/

resistance levels depend on the selected current
range.

7. To add CV mode to CR mode (CR+CV), see

page 58.

8. Set the remaining basic configuration settings

such as the slew rate, and switching mode
settings. See page 63 for details.

Display

ModeCRI Range

H 35A

V Range

L 15V

Function

Static

Configure

0.000

V

0.000

A

0.00

w

SlewRate 250.000

CR B Value 0.04082

CR A Value 0.04082

LOADRS232

A Value

Fine

03/Sep/2012

mA/uS

Ω

Ω

Mode

Current range

Voltage range

Active setting

Conductance/
Resistances

Conductance/
Resistance settings

Note

Basic CR mode configuration is complete. See
page 63 for more configuration options.

The current range and voltage range applies to all
the operating modes.

54

CR Units

Description

The CR setting units can be set to ohm (Ω) or

millisiemens (mS).

Operation

1. Make sure the load is off.

2. Press

Main

> Configure[F5] > Other[F2] and

set the CR Unit setting.

Range:

Ω, mS

Description

In Constant Voltage Mode, the unit will
maintain a constant voltage. In CV mode you
set the constant voltage level. For more details
on CV mode, see the appendix on page 189.

Warning

If you change the mode or the range when the load
is already on, the load will be turned off
automatically.

Operation

1. Make sure the load is off.

2. Press

Main

.

3. Select CV mode with the Mode[F1] soft-key.

4. Select the current range with the I Range[F2]

soft-key.

Range:

High, Middle, Low

5. Select the voltage range with the V Range[F3]

soft-key.

Range:

High, Low

CV Mode

OPERATION

55

PEL-3000 User Manual

6. Set the voltage level parameters using the scroll

wheel and number pad.

 Set CV A Value and/or CV B Value.
 The maximum and minimum voltage levels

depend on the selected voltage range.

7. Set the remaining basic configuration settings

such as the response settings. See page 63 for
details.

Display

ModeCVI Range

H 35A

V Range

L 15V

Response

Slow

Configure

0.000

V

0.000

A

0.00

w

CV B Value 15.000

CV A Value 15.000

LOADRS232

A Value

Fine

03/Sep/2012

V

V

Mode

Current range

Voltage range

Active setting

Current setting

Voltage settings

Note

Basic CV mode configuration is complete. See
page 63 for more configuration options.

The current range and voltage range applies to all
the operating modes.

Description

In Constant Power Mode, the unit will maintain
a constant power by varying the current. For
more details on CP mode, see the appendix on
page 187.

CP Mode

56

OPERATION

Warning

If you change the mode or the range when the load
is already on, the load will be turned off
automatically.

Operation

1. Make sure the load is off.

2. Press

Main

.

3. Select CP mode with the Mode[F1] soft-key.

4. Select the current range with the I Range[F2]

soft-key.

Range:

High, Middle, Low

5. Select the voltage range with the V Range[F3]

soft-key.

Range:

High, Low

6. Set the power level parameters using the scroll

wheel and number pad.

 For Static mode, set CP A Value and/or CP B

Value.

 For Dynamic mode, set Level1 and Level2.
 The maximum and minimum power levels

depend on the selected current range.

 For static mode, the parameter that is set last

becomes the ―active‖ setting. This will be shown
in the Operation Status Panel.

7. To add CV mode to CP mode (CP+CV), see

page 58.

8. Set the remaining basic configuration settings

such as the slew rate, and timer settings. See
page 63 for details.

57

PEL-3000 User Manual

Display

ModeCPI Range

H 35A

V Range

H 150V

Function

Static

Configure

0.00

V

0.000

A

0.00

w

CP B Value 0.00

CP A Value 0.00

LOADRS232

A Value

Fine

03/Sep/2012

W

W

Current range

Active setting

Current setting

Power settings

+CV OFF

Mode

Voltage range

Note

Basic CP mode configuration is complete. See
page 63 for more configuration options.

The current range and voltage range applies to all
the operating modes.

Description

CV mode can be added to CC, CR and CP
mode.

 The +CV settings apply to all applicable modes.

Operation

1. Make sure the load is off.

2. Press

Main

to return to the main menu for

the current mode.

3. Set the +CV voltage level. (You may need to

scroll down to the +CV setting)

Range:

OFF ~ rated voltage+5%

+CV Mode

58

OPERATION

Display

ModeCPI Range

H 35A

V Range

L 15V

Function
Dynamic

Configure

0.000

V

0.000

A

0.00

w

+CV 5.500

Timer2 0.025

Timer1 0.025

LOADRS232

03/Sep/2012

V

ms

ms

+CV setting

Note

The +CV settings apply to all the applicable
operating modes.

For example: The +CV settings made in CR mode
will be carried over to the +CV settings in CC and
CP mode.

Note

+CV settings cannot be controlled with external
control.

Description

1. The load can be turned on and off by pressing

the

Load

On/

Off

key.

 The

Load

On/

Off

key will turn orange when the load

is ―on‖.

 The LOAD icon in the Main Frame status panel

will turn orange when the load is on.

Turning on the Load

59

PEL-3000 User Manual

Note

 The load can be set to automatically turn on at

start up. See page 75.

 The load can be turned on via remote control.

See the programming manual.

 The load can be turned on via external control.

See page 141.

Display

LOADRS232

03/Sep/2012

LOAD on

Description

The Short key can be used to simulate a short
circuit of the load input terminals. A short
circuit is simulated by:

 Setting the current to the maximum value in CC

mode.

 Setting the resistance to the minimum value in

CR mode.

 Setting the voltage to the minimum value in CV

mode.

 Setting the power to the maximum value in CP

mode.

 When the load is shorted, the external controller

also sends a short signal. See page 147 for usage
details.

Shorting the Load

60

OPERATION

Operation

1. The short function can be turned on and off by

pressing the

Short

key.

 The

Short

key will turn red when the short

function is active.

 The Short icon will appear when the short

function is active.

Range:

Toggle, Hold

Display

LOADRS232SHORT

03/Sep/2012

SHORT on

Description

The Short key can be configured to Toggle or
Hold. By Default the Short key is set to Toggle.

 Toggle: Pressing the Short key will toggle the

shorting function on or off.

 Hold: Holding the short key will short the load.

Operation

1. Press

Main

> Configure[F5] > Other[F2] and

set the Short Key setting.

Range:

Toggle, Hold

Description

The keys and scroll wheel on the front panel
can be locked to prevent settings from being
changed.

Short Key Configuration

Locking the Front Panel Controls

61

PEL-3000 User Manual

Operation

1. The keys can be locked and unlocked by

pressing

Shift

+

Lock

Clear

.

 LOCK will appear in the Mainframe status

panel when the keys are locked.

 The

Load

On/

Off

key will not be locked if the load is

on.

Display

LOADRS232

03/Sep/2012

LOCK

LOCK icon

62

OPERATION

Description

The PEL-3000 has two switching modes, static
and dynamic. The switching modes allow the
PEL-3000 to switch between two preset levels.
Static mode can only switch between the two
levels manually, while Dynamic mode switches
between each level automatically based on a
timer.

 Static mode: A Value, B Value
 Dynamic mode: Level1, Level2

When the unit is set to static mode, only one
value (A Value or B Value) can be active at a
time. The active value is shown in the
Operation Status Panel.

Configure

w

LOADRS232SHORT

A Value

Fine

Active setting

When the unit is set to dynamic mode, the unit
will switch between Level1 and Level2 based
on the Timer1 and Timer2 parameters, shown
below.

Basic Configuration

The basic configuration settings are the common configuration
settings that are used for each operating mode. After selecting a
basic operating mode (CC, CR, CV or CP mode), the slew rate,
switching mode, response rate and other common parameters
should be configured.

Select the Switching Function

63

PEL-3000 User Manual

Level

Time

Level 2

Level 1

Timer1 Timer2Timer1

Dynamic Mode

Note

Dynamic mode is not available for CV mode.

Operation

1. Make sure the load is off.

2. Press

Main

.

3. Select Dynamic or Static mode with the

Function[F4] soft-key.

 A different switching mode can be set for CC,

CR and CP mode.

4. For dynamic mode, set the Timer1 and Timer2

parameters using the scroll wheel and number
pad.

 Timer1 sets the Level1 on-time.
 Timer2 sets the Level2 on-time.
 Take the slew rate settings into consideration

when setting the timers.

 The frequency of the dynamic switching is

output via the TRIG OUT BNC.

 To select whether A Value or B Value is the

―active‖ setting, press the

Shift

+

Preset

keys.

 The ―active‖ value will be shown in the

Operation Status Panel.

64

OPERATION

 The load can be ―on‖ when switching between

A Value and B Value.

Display:
Static Mode

ModeCPI Range

H 35A

V Range

H 150V

Function

Static

Configure

0.00

V

0.000

A

0.00

w

CP B Value 0.00

CP A Value 0.00

LOADRS232

A Value

Fine

03/Sep/2012

W

W

Active setting

A Value

B Value

+CV OFF V

Static mode

Display:
Dynamic Mode

ModeCPI Range

H 35A

V Range

L 15V

Function
Dynamic

Configure

0.000

V

0.000

A

0.00

w

Timer1 0.025

Level2 0.00

Level1 0.00

LOADRS232

Fine

03/Sep/2012

ms

W

W

Dynamic mode

Level1

Level2

Timer1

Description

When Dynamic switching mode is selected, the
Level1 and Level2 values can be set to either
discrete values or as a percentage of a set value.

 The setting applies to all applicable operation

modes.

 By default the units are set to Value.
 When Percent is chosen, 100% = 100% of the Set

power, current or resistance value.

Select the Display Units for Dynamic Mode Levels

65

PEL-3000 User Manual

Operation

1. Make sure the load is off.

2. Press

Main

> Configure[F5] > Other[F2] and

set the Dyna. Level setting.

Range:

Value, Percent

Display:
Percent Setting

ModeCPI Range

H 35A

V Range

L 15V

Function
Dynamic

Configure

0.000

V

0.000

A

0.00

w

Timer1 0.025

Level 50.0

Set 1.00

LOADRS232

Fine

03/Sep/2012

ms

%

W

Set level

% from the Set value

Example

Level

Time

Set

Level

Timer1 Timer2 Timer1

Dynamic Mode:

Dyna. Level = Percent

66

OPERATION

Description

The switching time for dynamic mode can be
configured to switch between two preset on­times (Timer1, Timer2) or by setting a switching
frequency and duty cycle.

Operation

1. Press

Main

> Configure[F5] > Other[F2] and

set the Dyna. Time setting.

Range:

T1/T2, Freq. Duty

Description

The current slew rate can be set for CC and CR
mode. The slew rate setting is used to limit the
change in current when switching.

For static mode, only a single slew rate can be
set.

Operation

1. Make sure the load is off.

2. Press

Main

.

3. Set the slew rate(s) using the scroll wheel and

number pad.

 For static mode, only a single slew rate can be

set.

 For dynamic mode, set both the rising and

falling slew rates.

 Take the timer settings into consideration when

setting the slew rates.

Select the Switching Time Configuration for Dynamic Mode

Slew Rate

67

PEL-3000 User Manual

Display

ModeCCI Range

H 35A

V Range

H 150V

Function
Dynamic

Configure

0.00

V

0.000

A

0.00

w

Timer1 0.025

SlewRate 2500.00

SlewRate 2500.00

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03/Sep/2012

ms

mA/uS

mA/uS

Slewrate settingsSlewrate settings

Description

The response speed setting is the response
speed for the negative feedback control of the
load current when used in CV mode. Response
speed settings are only applicable to CV mode.

 A response speed that is too fast could cause the

unit to be unstable.

 Reducing the response speed can improve

stability.

Operation

1. Make sure the load is off.

2. Press

Main

. Make sure the unit is in CV

mode by using the Mode[F1] soft-key.

3. Select the response speed with the Response[F4]

soft-key.

Range:

Slow, Fast

CV Mode Response Speed

68

OPERATION

Display

ModeCVI Range

H 35A

V Range

L 15V

Response

Slow

Configure

0.000

V

0.000

A

0.00

w

CV B Value 15.000

CV A Value 15.000

LOADRS232

A Value

Fine

03/Sep/2012

V

V

Response setting

Description

By default, the ―normal current response‖
speed is set to 1/1. The response speed can be
reduced to 1/2, 1/5, 1/10.

 Reducing the current response speed can affect

other settings such as the slew rate and soft start
settings.

Operation

1. Make sure the load is off.

2. Press

Main

> Configure[F5] > Other[F2] and

set the Response parameter.

Range:

1

1

,

2

1

,

5

1

,

10

1

CC and CR Mode Response Speed

69

PEL-3000 User Manual

Description

The soft start setting is used to limit the amount
of input current at start-up or from when the
Von Voltage threshold is tripped.

 The soft start setting only applies to CC & CR

mode.

Input I

Time

Soft Start = ON

Input I

Time

Soft Start= OFF

Rise voltage

Rise current

Rise current

Rise voltage

Operation

1. Press

Main

> Configure[F5] > Other[F2] and

set the Soft Start time.

Range:

OFF, 1~200ms

Advanced Configuration Settings

Use the advanced configuration settings to configure settings other
than those described in the basic configuration chapter.

Soft Start Setting

70

OPERATION

Description

The Von Voltage is the threshold voltage at
which the load module will start to sink
current.

Time

Von voltage

Von

V

Time

I

PEL-3000

V out

Load on

Operation

1. Press

Main

> Configure[F5] > Other[F2] and

set the Von Voltage level.

Range:

Von Voltage: 0.00~rating voltage

Von Voltage Settings

Von Voltage Level

71

PEL-3000 User Manual

Description

When Von Latch is set to ON, the load will
continue to sink current after being ―latched‖,
even if the voltage drops below the Von
Voltage threshold level.

When Von Latch is set to OFF, the load will
turn off when the voltage drops below the Von
Voltage threshold level.

 By default Von Latch is set to OFF.

Time

Von Latch = OFF

Von

V

Time

I

PEL-3000

V out

Load on

Load off Load on

Time

Von Latch = ON

Von

V

Time

I

PEL-3000

V out

Load on

Operation

1. Press

Main

> Configure[F5] > Other[F2] and

set the Von Latch setting.

Range:

Von Latch: OFF, ON

Von Voltage Latch

72

OPERATION

Description

Von Delay is the amount of time the unit will
wait before turning the load on after the Von
Voltage threshold has been latched. This will
prevent overshoot current from affecting the
Von Voltage threshold.

Operation

2. Press

Main

> Configure[F5] > Other[F2] and

set the Von Delay time.

Range:

Von Delay: OFF, 1.0~60ms

Note: CR mode can have the delay time set
separately from the other modes (called

Von Delay

–CR

when in CR mode).

Description

When Count Time is set to on, it will count the
elapsed time from when the load was turned on
to when it was turned off.

 This function is applicable to manual and

automatic shutdown (such as from protection
functions such as UVP etc.)

 The elapsed time will be shown in the display

Measurement area.

Von Voltage Delay

Timer Functions

Count Time

73

Operation

1. Press

Main

> Configure[F5] > Other[F2] and

turn the Count Time on or off.

Range:

ON, OFF

Display

0.000

V

0.000

A

0.00

w

LOADRS232

03/Sep/2012

0:00:05

Elapsed time

Cut Off Time

Description

The Cut Off Time function will turn the load off
after a set-amount of time. After the load has
been turned off, a popup screen will display the
voltage level when the load was turned off.

Operation

1. Press

Main

> Configure[F5] > Other[F2] and

set the Cut Off Time.

Range:

OFF, 1~60000 seconds

Display

ModeCPI Range

H 35A

V Range

L 15V

Function
Dynamic

Configure

0.000

V

0.000

A

0.00

w

Timer1 0.025

Level2 0.00

Level1 0.00

LOADRS232

Fine

03/Sep/2012

mS

W

W

0:00:05

Cut off time

Time Up

Voltage : 5.1223V

Enter

Voltage at cut off time

PEL-3000 User Manual

74

OPERATION

Description

The PEL-3000 can be configured to
automatically load the last program, normal
sequence, fast sequence or load setting at
startup.

By default, this setting is disabled.

Operation

1. Press

Shift

+

Utility

Help

> Load[F2].

2. Turn Auto Load On or Off.

 When set to OFF, the Auto Load setting is

disabled.

3. Select the Auto Load On configuration.

 This will select whether the PEL-3000 will

automatically load the last program, normal
sequence, fast sequence or load settings.

Auto Load On:

Load, Prog, NSeq, FSeq

Auto Load Configuration

75

PEL-3000 User Manual

Description

Cursor mode allows you to edit the selected
parameter one digit at a time. When editing a
parameter, pressing the scroll wheel determines
which digit is selected. Turning the scroll wheel
will then edit the parameter by the step
resolution of the digit.

See the Conventions section on page 41 for
operation details.

Operation

1. Press

Main

> Configure[F5] > Next Menu[F4]

> Knob[F2] and set the Status setting is set to
Cursor.

Display

Parallel Knob External

Previous

Menu

0.4

CCL Step 0.183575

CCM Step 0.5000

LOADRS232

03/Sep/2012

mS

A

A

CRH Step

CCH Step

Status

1.000

CursorA

CC
35A
15V

Static

Configure

Step Resolution Configuration

There are two different ways to set the set resolution when using
the scroll wheel to edit parameters. Step Mode and Cursor Mode.
Step Mode is the default method. Only one mode can be active at a
time; When one mode is active, the other mode is deactivated.

Cursor Mode Configuration

76

OPERATION

Description

When set to Step Mode, the voltage, current,
resistance and power settings can have the step
resolution configured. The step resolution
refers to the step resolution of the coarse
adjustment for these settings. The fine
adjustment cannot be configured.

See the Conventions section on page 41 for
details on how to switch between coarse and
fine adjustment modes.

Settings

The step resolution of each setting is configured
separately for each current range.

Settings

Description

CCH Step

CC mode, IRange = High

CCM Step

CC mode, IRange = Middle

CCL Step

CC mode, IRange = Low

CRH Step

CR mode, IRange = High

CRM Step

CR mode, IRange = Middle

CRL Step

CR mode, IRange = Low

CVH Step

CV mode, VRange = High

CVL Step

CV mode, VRange = Low

CPH Step

CP mode, IRange = High

CPM Step

CP mode, IRange = Middle

CPL Step

CP mode, IRange = Low

Step Mode Configuration

77

PEL-3000 User Manual

Operation

1. Press

Main

> Configure[F5] > Next Menu[F4]

> Knob[F2] and make sure the Status setting is

set to Step.

2. Set the desired step resolution settings. (The

step resolution settings are only available when
Status=Step)

 For example if the step resolution for CCM Step

is 0.5A, then the resolution can be incremented
in 0.5A steps.

Display

Parallel Knob External

Previous

Menu

0.4

CCL Step 0.183575

CCM Step 0.5000

LOADRS232

03/Sep/2012

mS

A

A

CRH Step

CCH Step

Status

1.000

StepA

CC
35A
15V

Static

Configure

78

OPERATION

Description

For OCP, the PEL-3000 can be configured to
either limit the current or turn off the load.

The OCP levels can be set to 10% higher than
the rating current.

Operation

1. Press

Main

> Configure[F5] > Protection[F1]

and set the OCP Level and OCP Setting.

Range:

OCP Level: Rating current + 10%
OCP Setting: LIMIT, Load Off

Alarm

 When OCP Setting is configured to Load Off, a

message will be displayed on the screen when
OCP is tripped. The Enter key must be pressed
to clear the alarm message.

 When configured to LIMIT, OCP will be

displayed on the screen when the OCP is
tripped and the current will be limited to the
OCP Level setting.

Protection Settings

The Protection settings are used to prevent damage to the unit or
the DUT by excessive current, voltage or power.

An alarm is generated and a message is displayed on the screen
when a protection setting is tripped. When an alarm is activated,
the load is turned off (or limited), and the ALARM STATUS pin of
the J1 connector on the rear panel (pin 16) turns on (open collector
output by a photocoupler). The protection settings can be used
regardless of whether the remote sense connections are used or not.

OCP

79

Display

2.596

V

500.06

mA

1.2982

w

CV B Value 15.000

CV A Value 15.000

LOADRS232

A Value

Fine

03/Sep/2012

V

V

OCP Alarm

Please Press Enter

To Clear Alarm

OCP

OCP indicator

Alarm message
when OCP is set
to Load Off

ModeCVI Range

L 0.7A

V Range

L 15V

Response

Fast

Configure

OPP

Description

For OPP, the PEL-3000 can be configured to
either limit the power or turn off the load.

The OPP levels can be set to 10% higher than
the rating power.

Operation

1. Press

Main

> Configure[F5] > Protection[F1]

and set the OPP Level and OPP Setting.

Range:

OPP Level: Rating power + 10%
OPP Setting: LIMIT, Load Off

Alarm

 When OPP Setting is configured to Load Off, a

message will be displayed on the screen when
OPP is tripped. The Enter key must be pressed
to clear the alarm message.

 When configured to LIMIT, OPP will be

displayed on the screen when the OPP is tripped
and the power will be limited to the OPP Level
setting.

PEL-3000 User Manual

80

Display

2.596

V

500.06

mA

1.2982

w

CV B Value 15.000

CV A Value 15.000

LOADRS232

A Value

Fine

03/Sep/2012

V

V

OPP Alarm

Please Press Enter

To Clear Alarm

OPP

OCP indicator

Alarm message
when OPP is set
to Load Off

ModeCVI Range

L 0.7A

V Range

L 15V

Response

Fast

Configure

UVP

Description

If the UVP is tripped, the PEL-3000 will turn off
the load.

The UVP levels can be set from 0V to 10%
higher than the rating voltage.

Operation

1. Press

Main

> Configure[F5] > Protection[F1]

and set the UVP Level.

Range:

UVP Level: OFF, 0~Rating voltage +
10%

Alarm

 The UVP indicator and a message will only

appear on the screen when the input voltage is
below the UVP level. The Enter key must be
pressed to clear the alarm message.

 To clear the UVP indicator, remove the cause of

the under voltage ~ i.e., increase the input
voltage.

OPERATION

81

Display

2.596

V

500.06

mA

1.2982

w

CV B Value 15.000

CV A Value 15.000

LOADRS232

A Value

Fine

03/Sep/2012

V

V

UVP Alarm

Please Press Enter

To Clear Alarm

UVP

UVP indicator

Alarm message
when UVP is
tripped

ModeCVI Range

L 0.7A

V Range

L 15V

Response

Fast

Configure

OVP

Description

If the OVP is tripped, the PEL-3000 will turn off
the load.

The OVP levels can be set from 0V to 10%
higher than the rating voltage.

Operation

1. Press

Main

> Configure[F5] > Protection[F1]

and set the OVP Level.

Range:

OVP Level: OFF, 0~Rating voltage +
10%

Note: To turn OVP off, set the OVP voltage greater
than the current rating voltage + 10%.

Alarm

 The OVP indicator and a message will only

appear on the screen when the input voltage is
below the UVP level. The Enter key must be
pressed to clear the alarm message.

 To clear the OVP indicator, remove the cause of

the over voltage ~ i.e., reduce the input voltage.

PEL-3000 User Manual

82

Display

2.596

V

500.06

mA

1.2982

w

CV B Value 15.000

CV A Value 15.000

LOADRS232

A Value

Fine

03/Sep/2012

V

V

OVP Alarm

Please Press Enter

To Clear Alarm

UVP

OVP indicator

Alarm message
when OVP is
tripped

ModeCVI Range

L 0.7A

V Range

L 15V

Response

Fast

Configure

UnReg

Description

The UnReg error message will appear on the
display when the electronic load is operating in
an unregulated state.

Alarm

 The UnReg indicator will appear on the display

when the set load is inadequate for the source.

 To clear the UnReg indicator, increase the load

or reduce the load requirements.

Display

2.596

V

500.06

mA

1.2982

w

CV B Value 15.000

CV A Value 15.000

LOADRS232

A Value

Fine

03/Sep/2012

V

V

UnReg

UnReg indicator

ModeCVI Range

L 0.7A

V Range

L 15V

Response

Fast

Configure

OPERATION

83

PEL-3000 User Manual

Description

Turns the speaker sound on or off for the user
interface, such as key press tones and scrolling
tones.

Operation

1. Press

Shift

+

Utility

Help

> Other[F5].

2. Set the Speaker settings on or off.

 When set to OFF, the speaker setting will not

disable the tones for Go-NoGo or protection
alarms.

System Settings

The following section covers a number or miscellaneous system
settings such as:

 Speaker settings
 Display settings
 Alarm tone settings
 Input control settings
 Language settings

All system settings are accessible in the Utility menu.

Sound Settings

Speaker Settings

84

OPERATION

Description

The alarm tone for the unit can be turned on or
off in the utility menu. The alarm tone can be
set separately for the protection settings (OCP,
OPP, UVP, OVP), Go-NoGo testing or for when
the unit is operating in an unregulated state
(see page 83).

Operation

1. Press

Shift

+

Utility

Help

> Other[F5].

2. Set the alarm tone settings on or off.

 The alarm tone settings ignore the Speaker

setting.

Alarm Tone:
UnReg Tone:
Go_NoGo Tone:

ON, OFF
ON, OFF
ON, OFF

Description

Sets the contrast level.

Operation

1. Press

Shift

+

Utility

Help

> Other[F5].

2. Set the Contrast and Brightness settings.

Range:

Contrast: 3 ~ 13 (low ~ high)
Brightness: 50 ~ 90 (low ~ high)

Alarm Tone Settings

Display Settings

Contrast and Brightness

85

PEL-3000 User Manual

Description

The Knob Type setting determines if values are
updated immediately as they are edited or if
they are only updated after the Enter key is
pressed.

The Updated setting is applicable for when the
load is already on and the user wishes to
change the set values (current, voltage, etc.) in
realtime.

The Old setting will only update the values
after the Enter key is pressed.

Operation

1. Press

Shift

+

Utility

Help

> Other[F5].

2. Set the Knob type and Slave knob settings.

Range:

Knob type: Updated, Old

Description

The PEL-3000 supports only English.

Operation

1. Press

Shift

+

Utility

Help

> Other[F5].

2. Set the Language setting.

Supported languages:

English

Control Settings

Language Settings

86

OPERATION

Description

The Go-NoGo setting limits can be set as either
discrete high & low values or as a percentage
offset from a center value.

Operation

1. Press

Main

> Configure[F5] > Go-NoGo[F3].

2. Select Entry Mode and choose how to set the

pass/fail limits.

 Value will allow you to set the limits as discrete

values.

 Percent will allow you to set the limits as a

percentage offset from a center value.

3. If Entry Mode was set to Value, Set the High &

Low limit values.

High:
Low:

0~rating current/voltage
0 ~rating current/voltage

4. If Entry Mode was set to Percent, Set the Center

voltage/current and High, Low % values.

Center:
High:
Low:

0~rating current/voltage
0~100% of center voltage/current

0~100% of center voltage/current

Go-NoGo

The Go-NoGo configuration is used to create pass/fail limits on the
voltage or current input. If the voltage/current exceeds the
pass/fail limits, an alarm will be output.

The Go-NoGo configuration can be used with the Program function
to create complex pass/fail tests.

Setting the Go-NoGo Limits

87

PEL-3000 User Manual

5. Set the Delay Time.

 The delay time setting will delay activating the

Go-NoGo testing by a specified amount of time.

 The delay setting can compensate for startup

oscillation and other instabilities during startup.

Delay Time

0.0~1.0 seconds (0.1s resolution )

Note

When the Main settings are saved or recalled, the
Go-NoGo settings are also saved/recalled. See the
Save/Recall chapter for details, page 117.

Description

Go-NoGo test results are displayed in the
measurement panel.

 GO indicates pass (good).
 NG indicates fail (no good).

Operation

1. Press

Main

> Configure[F5] > Go-NoGo[F3].

2. Set SPEC Test to ON.

 When SPEC Test is ON, SPEC will appear in the

Operation Status Panel. This means the unit is
ready for Go-NoGo testing.

3. Turn the load on.

 The test starts from the time the load was turned

on + the Delay Time.

Running a Go-NoGo Test

88

OPERATION

Display:
GO

0.000

V

0.000

A

0.00

w

Level1 0.00

LOADRS232

03/Sep/2012

W

SPEC test = ON

SPEC

GO

Test result

Display:
NG

0.000

V

0.000

A

0.00

w

Level1 0.00

LOADRS232

03/Sep/2012

W

SPEC test = ON

SPEC

NG

Test result

89

PEL-3000 User Manual

Description

When you run a program, you are essentially
executing up to 16 different load operations
consecutively. Each of the different load
operations are ―steps‖ in the program. A
program starts at step 01 and ends at step 16.

 A program recalls the operating mode, range,

static/dynamic mode, response speed and other
settings of each step from stored memory. It also
recalls the Go-NoGo settings.

 The same memory settings can be used for

multiple steps.

 The execution time of each step is configurable.
 Applies the Go-NoGo settings for each step.
 Each step must be executed in order.
 Each step can be configured to automatically go

to the next step or wait for confirmation from
the user before proceeding to the next step.

 Individual steps can be skipped.
 Programs can be linked together to make

Program

The PEL-3000 can create programs that are designed to step­through up to 16 pre-set load operations. The program function is a
powerful tool that can allow you to perform a number of different
operations in succession.

 The execution time of each step is user-defined.
 Programs can be chained together to make larger programs.
 Up to 16 programs can be created for a program chain.

See page 117 for saving load operations.

Program Overview

90

OPERATION

program chains.

 Program chains need not be executed in order.
 There are 16 steps to a program.
 There are up to 16 programs to a chain.

PROGRAM 1

STEP 01
STEP 02

:

STEP 16

PROGRAM 2

STEP 01
STEP 02

:

STEP 16

PROGRAM 3

STEP 01
STEP 02

:

STEP 16

Setting Overview

A program contains the following settings for
each step:

 Memory: the memory location of the load

operation for the selected step (M001~M256).

 Run: Designates the run setting for the step

(Auto, Manual, Skip).

 On-Time: Sets the run time of the test.
 Off-Time: Sets the off time between steps.
 P/F-Time: Sets the testing pass/fail delay time

for GoNo Go testing.

 Short-Time: Sets the shorting time for the step, if

any.

91

PEL-3000 User Manual

Timing Diagram
for Single Step

Below is a timing diagram of a single step in a
program.

On-Time Off-Time

Step test time

Start of Step End of Step

P/F End Test Time (fixed)

P/F Time

0.04s

0.06s
Short-Time

P/F Start Test Time (fixed)

Note

Before creating a program, the settings for each
step must first be created and saved to internal
memory (M001~M256). See the save recall chapter
for further details, page 117.

Program Setting
Display Overview

Chain

Previous

Menu

LOADRS232

03/Sep/2012

Timing Edit for Program

On-Time:

Run:

Memory

0.1

Skip

M001

Short-Time:

P/F-Time:

Off-Time:

Off

Off

Off

STEP: 01

Program

Off

Recall

Default

Program
number

Step number in
selected program

Program
settings

PROG: 01

Program
settings

Operation

1. Press

FUNC

> Program[F1].

 Note that Program[F1] is off by default.

2. Select PROG and select a program number to

edit.

Create a Program

92

OPERATION

PROG

01 ~ 16

3. Select a STEP in the selected program.

STEP

01 ~ 16

4. Select Memory and select which memory

location to load for the selected step.

 Settings loaded from the memory location will

be used for the selected step.

 The same memory location can be used for

multiple steps.

Memory

M001 ~ M256

5. Set the Run setting for the step.

 By default RUN is set to Skip.
 The Auto setting will automatically start and go

onto the next step.

 The Manual setting will wait for the user to

press Next[F2] before running the step.

Run

Skip, Auto, Manual

6. Choose the On-Time in seconds.

 The on-time setting determines how long the

load is turned on for the selected step.

 The on-time is defined as the total test time

minus the off-time.

On-Time

0.1 ~ 60 seconds

7. Choose the Off-Time in seconds.

 The off-time setting determines how long the

load is turned off between the end of the current
step and the start of the next step.

 The off-time is defined as the total test time

minus the on-time.

Off-Time

Off, 0.1 ~ 60 seconds

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PEL-3000 User Manual

8. Choose the P/F-Time (pass/fail time) in

seconds.

 The P/F-Time refers to the P/F delay time. This

delay time includes the 0.06 P/F start test time,
as shown in the timing diagram on page 92.

P/F-Time

Off, 0.0 ~ 119.9 seconds

9. Set the Short-Time in seconds.

 Has the same action as pressing the short key.

See page 61 for details about shorting the load.

Short-Time

Off, 0.1 seconds ~ On-Time

10. Repeat steps 3 to 9 for all the steps in the

program.

 A maximum of 16 steps per program can be

created.

 Steps that are not configured are set to ―Skip‖

by default.

11. Press Save[F3] to save the program and all the

steps in the program.

 The program will be saved to internal memory.
 See the Save/Recall chapter on details on how

to save to Setup memory.

Recall Default

Pressing Recall Default[F4] will recall the default
settings for each program/step. See page 177
for details.

94

OPERATION

Note

Before creating a program chain, make sure a
number of programs have already been saved.
These will be used to create the program chain.

Chain Setting
Display Overview

Select

Start

LOADRS232

03/Sep/2012

Off

P03 Off

P02 Off

P04

P01

Start

Off

P01

Program Chain Set

Starting program
for the chain

Recall

Default

Previous

Menu

Operation

1. Press

FUNC

> Program[F1] > Chain[F1].

 It may be necessary to load the programs from

Setup memory if they were not created in the
current session.

2. If Start is not already selected, press Select

Start[F1] and select which program will be used
to start the program chain.

Start:

P01 ~ P16

3. Select P01 and choose which program will be

linked to P01.

 Selecting OFF will end the chain after P01.
 Selecting P01 will create an infinite chain.
 Chains need not be linked in sequential order.

P01:

OFF, P01 ~ P16

Create a Program Chain

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PEL-3000 User Manual

4. Repeat step 3 for any remaining programs in

the chain.

5. Press Save to save the program chain to internal

memory.

Pressing Recall Default[F4] will reset the chain to
the default settings. See page 177 for details.

 Recall Default[F4] will essentially clear the

program chain.

Description

A program or program chain is run the same
way as a normal load.

Operation

1. Press

FUNC

> Program[F1].

2. Turn program mode on by setting Program[F1]

to On.



PROG

will appear at the top of the display when

Program is On.

3. Turn the load on.

 The program/chain starts immediately.
 The

PROG

icon turns orange when the load is

turned on.

4. When a program/chain is running the screen

displays which program, step and memory is
currently active.

 Press Pause[F1] to suspend a test, press

Continue[F1] to resume.

 Press Next[F2] to run the next step if its Run

setting was set to Manual.

Running a Program or Chain

96

OPERATION

5. When a program/chain has finished running, a

list of the Go-NoGo results for each step are
displayed.

 Press Exit[F5] to exit.

Display:
Program/Chain
Running

Step that is
currently running.

Program number that
is currently running.

Memory number
of current step.

No-NoGo result
for the step

Pause

PROGRS232

03/Sep/2012

Step(Memory)

Program No:

01(001)

01

Run Program

GO

0.000

V

0.000

A

0.00

w

Next

Display:
Program/Chain
Finished

Exit

PROGRS232

03/Sep/2012

Run Program Detail Result

1

1

1

Program

3

2

1

Step

NG

GO

GO

Result

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PEL-3000 User Manual

Description

A normal sequence is comprised of a user­defined number of steps that when executed in
sequence can be used to simulate a DC load.

 Up to 1024 discrete steps can be configured

using normal sequences.

 Each normal sequence can have a memo note

attached to it.

 Normal Sequences can be looped up to 9999

discrete times or for an infinite amount of times.

 Normal sequences can be configured to hold a

set voltage, current, power or resistance at the
end of the load.

 Normal Sequences can be linked together in a

chain.

Sequence

The PEL-3000 supports both programs and sequences. The essential
difference between programs and sequences is that programs can
use different operating modes for each step while sequences use
the same operating mode throughout the whole sequence. In effect
sequences are used to create complex load simulations.

There are two different types of Sequences, Normal Sequences and
Fast Sequences.
Normal sequences can define the execution time and slew rate of
each step.
On the other hand the execution time for each step in a fast
sequence is fixed to the rate (Time Base setting) set by the user.

Normal Sequence Overview

98