GW Instek PEL-2000A Series User manual

Programmable DC Electronic
Load
PEL-2000A Series
USER MANUAL
ISO-9001 CERTIFIED MANUFACTURER

March 2018
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 the GW instek company.
The information in this manual was correct at the time of printing.
However, GW instek continues to improve products and reserves the
right to change specification, equipment, and maintenance procedures
at any time without notice.

Table of Contents
3
Table of Contents
SAFETY INSTRUCTIONS ...................................................6
GETTING STARTED.........................................................11
Main Features........................................................13
Series Overview .....................................................15
Package Contents and Accessories ........................17
Measurement Overview .........................................19
Front Panel Overview.............................................20
Display Overview –Mainframe ..............................25
Rear Panel Overview ..............................................29
Front Panel Overview –Load Module ....................32
LED Display Overview –Load Module ...................35
Installation ............................................................38
Load Connections ..................................................45
Frame Link Connection ..........................................55
Channel Control Connection ..................................57
Go/NoGo Connection ............................................60
OPERATING DESCRIPTION ............................................. 61
Operating Mode Description .................................62
Group Unit Mode ..................................................72
Run Program .........................................................74
Sequence ...............................................................77
OCP Test Automation ............................................82
Parallel Dynamic Loading ......................................83
Configurations Description ....................................84
Interface and System .............................................94
TUTORIALS .................................................................. 101
Local loads ..........................................................102
Single Channel Load ............................................104

PEL-2000A Series User Manual
4
Parallel Load Modules .........................................106
Programming.......................................................108
Sequences ...........................................................110
Frame Link...........................................................111
Channel Control...................................................113
General Configuration Options ............................115
OPERATION ................................................................. 117
Local Mode Operation .........................................120
Mainframe Basic Operation .................................126
Creating a Program Sequence ..............................150
Edit Sequence ......................................................163
OCP Test Automation ..........................................173
Channel Configuration .........................................180
Mainframe Configuration .....................................208
Interface Configuration (settings) ........................232
RS232 and USB CDC Function Check ...................238
GPIB Function Check ...........................................242
Saving/Recalling Channels...................................244
INTERFACE................................................................... 280
Interface Configuration ........................................281
FAQ.............................................................................. 291
APPENDIX .................................................................... 292
Fuse Replacement ................................................292
Firmware Update .................................................293
Calibration ...........................................................296
Range Chart .........................................................297
Default Settings ...................................................302
Specifications ......................................................305
Dimensions .........................................................315
EC Declaration of Conformity ..............................318

Table of Contents
5
INDEX .......................................................................... 319

PEL-2000A Series User Manual
6
SAFETY INSTRUCTIONS
This chapter contains important safety
instructions that you must follow when operating
the PEL-2000A series, and when keeping it in
storage. Read the following before operating the
PEL-2000A series to ensure your safety and to
keep the PEL-2000A series in the best possible
condition.
Safety Symbols
These safety symbols may appear in this manual or on the PEL-
2000A series.
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 PEL-2000A series or
to other properties.
DANGER High Voltage
Attention Refer to the Manual
Protective Conductor Terminal
Earth (ground) 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
7
Safety Guidelines
General
Guideline
CAUTION
Do not place any heavy object on the PEL-2000A
series.
Avoid severe impact or rough handling that
leads to damaging the PEL-2000A series.
Do not discharge static electricity to the PEL-
2000A series.
Do not block or obstruct the cooling fan vent
openings.
Do not perform measurement at circuits directly
connected to Mains (Note below).
Do not disassemble the PEL-2000A series unless
you are qualified as service personnel.
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
PEL-2000A series falls under category I.
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: 100-120Vac/ 200-
240Vac (90-132Vac/ 180-250Vac)
Frequency: 47~63Hz
Power rating: PEL-2004A: 250VA Max
PEL-2002A: 150VA Max
Connect the protective grounding conductor of
the AC power cord to an earth ground, to avoid
electrical shock.

PEL-2000A Series User Manual
8
Fuse
WARNING
Fuse type: T3.15A/250V
Make sure the correct type of fuse is installed
before power up.
To avoid fire, only replace the fuse with the
specified type and rating.
Disconnect the power cord before fuse
replacement.
Make sure the cause of a fuse blowout is fixed
before replacing the fuse.
Cleaning the
PEL-2000A
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 or cleaners 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
Altitude: Up to 2000m
Transient Overvoltage on the main supply is
2500V.

SAFETY INSTRUCTIONS
9
(Pollution Degree) EN 61010-1:2010 specifies the pollution degrees
and their requirements as follows. The PEL-2000A series 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
Relative Humidity: < 80%
Temperature: −10°C to 70°C
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.

PEL-2000A Series User Manual
10
Power cord for the United Kingdom
When using the PEL-2000A series in the United Kingdom, make
sure the power cord meets the following safety instructions.
NOTE: This lead/appliance must only be wired by competent persons
WARNING: THIS APPLIANCE MUST BE EARTHED
IMPORTANT: The wires in this lead are coloured in accordance with
the following code:
Green/ Yellow:
Earth
Blue:
Neutral
Brown:
Live (Phase)
As the colours of the wires in main leads may not correspond with the
coloured marking identified in your plug/appliance, proceed as
follows:
The wire which is coloured Green & Yellow must be connected to the
Earth terminal marked with either the letter E, the earth symbol or
coloured Green/Green & Yellow.
The wire which is coloured Blue must be connected to the terminal
which is marked with the letter N or coloured Blue or Black.
The wire which is coloured Brown must be connected to the terminal
marked with the letter L or P or coloured Brown or Red.
If in doubt, consult the instructions provided with the equipment or
contact the supplier.
This cable/appliance should be protected by a suitably rated and
approved HBC mains fuse: refer to the rating information on the
equipment and/or user instructions for details. As a guide, a cable of
0.75mm2 should be protected by a 3A or 5A fuse. Larger conductors
would normally require 13A types, depending on the connection
method used.
Any exposed wiring from a cable, plug or connection that is engaged
in a live socket is extremely hazardous. If a cable or plug is deemed
hazardous, turn off the mains power and remove the cable, any fuses
and fuse assemblies. All hazardous wiring must be immediately
destroyed and replaced in accordance to the above standard.

GETTING STARTED
11
GETTING STARTED
This chapter describes the features and functions of the
PEL-2000A series, including the front and rear panel
appearance, panel installation and connection types. Use
the Tutorial section for quick access to step by step
instructions on the main functions.
Main Features........................................................13
Series Overview .....................................................15
Package Contents and Accessories ........................17
Measurement Overview .........................................19
Front Panel Overview.............................................20
Display Overview –Mainframe ..............................25
Rear Panel Overview ..............................................29
Front Panel Overview –Load Module ....................32
LED Display Overview –Load Module ...................35
Installation ............................................................38
Load Module Installation................................................ 38
GPIB Installation ............................................................. 40
Rack Mount Installation.................................................. 41
Channel Number............................................................. 42
Power Up & Self Test ...................................................... 43

PEL-2000A Series User Manual
12
Load Connections ................................................. 45
Precautions and Procedures........................................... 45
Remote (Sense) Connection........................................... 50
Single Load Connections ................................................ 51
Parallel Load Connections .............................................. 53
Frame Link Connection ......................................... 55
Channel Control Connection ................................. 57
Go/NoGo Connection ........................................... 60

GETTING STARTED
13
Main Features
Description
The PEL-2002A and PEL-2004A are multichannel
programmable DC electronic load mainframes.
The PEL-2002A mainframe is able to hold 2 load
modules, whilst the PEL-2004A is able to hold 4.
The flexible module configuration allows the
mainframes to either sink multiple loads
independently or large loads when used in
parallel.
The PEL-2000A series support four operation
modes: constant current (CC), constant voltage
(CV and CV+CC), constant resistance (CR) and
constant power (CP). Constant current and
constant resistance mode can operate in either
static or dynamic mode.
Feature Overview
Flexible operation with removable load
modules.
Multiple independent isolated channels.
High performance, up to 5 digit resolution.
High slew rate enabling a high response speed
High capacity when frame linked.
Different load module types can be used in the
same mainframe.
Dedicated parallel mode.
Supports rack mount installation.
Supports frame link connections, with up to 4
slave units.
Color LCD display.
120 different sets of programmable sequences.
Accurate load simulation using Sequences.

PEL-2000A Series User Manual
14
4 panel setups.
USB flash drive support.
Interface
USB
RS-232C
GPIB (optional)

GETTING STARTED
15
Series Overview
The PEL-2000A series comprises of two different Mainframes: the
PEL-2002A and the PEL-2004A. The Mainframes differ by the
number of load modules that can be accommodated. The PEL-
2002A has two load module slots whilst the PEL-2004A has 4. There
are 4 different load module models, the PEL-2020A, PEL-2030A,
PEL-2040A and PEL-2041A.
PEL-2020A PEL-2030A
PEL-2004A Mainframe
PEL-2040A PEL-2041A
LOCAL UTILITY
CAL.
F5F4F3F2
ON /
OFF
SHIFTPRESET
ENTER
F1
FILEFUNC
LOAD
9
CHAN
87
3
CLEAR
21
0
4 5 6
HELP
P0 LOCK
P3P1 P2
P6P4 P5
P9P7 P8
A / B DYNA.
STATIC/
SHORTDISPLAY
LOAD
V sense
500V DC
MAX
MAX
500V DC80V DC
MAX
MAX
80V DC
V sense
LOAD
DISPLAY SHORT
STATIC/
DYNA.
A / B
R
80V DC
MAX MAX
80V DC
L
MAX
80V DC
MAX
80V DC
R
V senseV sense
L
LOAD
DISPLAY SHORT
STATIC/
DYNA.
R / LR / L DYNA.
STATIC/
SHORTDISPLAY
LOAD
L
V sense V sense
R
80V DC
MAX
80V DC
MAX
L
80V DC
MAX MAX
80V DC
R
R
L 20A / 80V , 100W
DC Electronic Load
20A / 80V , 100W
PEL-2020A R
L 5A / 80V , 30W
DC Electronic Load
40A / 80V , 250W
PEL-2030A PEL-2040A DC Electronic Load
70A / 80V , 350W PEL-2041A DC Electronic Load 10A / 500V , 350W
DC Electronic Load
PEL-2004A
PEL-2020A PEL-2040A
PEL-2002A Mainframe
P8P7 P9
P5P4 P6
P2P1 P3
LOCKP0
HELP
654
0
1 2
CLEAR
3
7 8
CHAN
9
LOAD
FUNC FILE
F1
ENTER
PRESET SHIFT
OFF
ON/
F2 F3 F4 F5
CAL.
UTILITYLOCAL
80V DC
MAX
MAX
80V DC
V sense
LOAD
DISPLAY SHORT
STATIC/
DYNA.
A / BR / L DYNA.
STATIC/
SHORTDISPLAY
LOAD
L
V sense V sense
R
80V DC
MAX
80V DC
MAX
L
80V DC
MAX MAX
80V DC
R
PEL-2040A
DC Electronic Load
70A / 80V , 350W
DC Electronic Load
PEL-2002A
R
L 20A / 80V , 100W
DC Electronic Load
20A / 80V , 100W
PEL-2020A
The 4 different load module models each differ in the amount of
current, voltage and power and the number of channels that the
load module can accommodate. The procedures in this manual will
be load module model independent unless specifically stated.
Below is a table showing the basic differences between each load
module model. For detailed specifications, please see page 305.

PEL-2000A Series User Manual
16
Load Module
Channels
Power (W)
CH L/R
(low/high
range)
Current (A)
Range
Low/High
Voltage (V)
PEL-2020A
(100Wx2)
2
100/100
2/20
0-80
PEL-2030A
(30/(25/250W))
2
30/(25/250)
5/4/40
0-80
PEL-2040A
1
(35/350)
7/70
0-80
PEL-2041A
1
(35/350)
1/10
0-500

GETTING STARTED
17
Package Contents and Accessories
The PEL-2000A electronic load has a number of standard and
optional accessories that can be ordered. For more information
please visit the GW Instek website at www.gwinstek.com or
consult your authorized distributor for details.
Standard
Accessories
Description
Power Cable
Mains power cable (region dependent)
(18AWGx3C,125V/10A,1.8m)
CD ROM
Contains PEL-2000A series Electronic DC Load User
Manual, Programming Manual and USB Driver
GTL-120
Load cables 2X red, 2X black (per load module)
GTL-121
Remote sense cables , 1X red, 1X black (per load
channel)
PEL-003
3 sets for PEL-2004A; 1 set for PEL-2002A
Options
Description
PEL-2020A
PEL-2030A
PEL-2040A
PEL-2041A
Load Module
PEL-001
GPIB interface (Factory installed)
Optional Accessories
Description
PEL-002
PEL-2000A Rack Mount kit (handle only)
PEL-003
Panel Cover
GTL-232
RS-232C
GTL-246
USB

PEL-2000A Series User Manual
18
GTL-248
GPIB cable
GTL-249
Frame link cable

GETTING STARTED
19
Measurement Overview
The PEL-2000A series has a number of different operating modes
that are completely configurable. All the modes have customizable
Go/NoGo limits, range limits, timers, slew rates, alarms and
protection limits. For parallel loads, there is a dedicated Parallel
configuration mode. To make tests, Programs and Sequences can be
created.
Function
Description
Constant Current
Mode (CC)
In constant current mode, the load module will
sink a constant amount of current, regardless of
the voltage.
Constant Voltage
Mode (CV)
Under constant voltage mode, the voltage remains
unchanged, regardless of the current.
Constant
Resistance Mode
(CR)
In constant resistance mode, the resistance load
will remain unchanged as the voltage and current
remain proportional.
Constant Power
Mode (CP)
In constant power mode, the load module will
ensure the power consumed is constant.
Programmable
Sequences
(Prog.)
The load module supports programming
sequences. With up to 120 different memory
settings in 12 programs with 10 sequences.
Sequences (Seq.)
Used to create load profiles to accurately simulate
a load. Sequences can be created for each channel.
Group Unit Mode
Group Unit Mode enables the PEL-2000A series
mainframes to easily use load modules (of the
same type/rating) in parallel. Parallel mode is
used in conjunction with CC or CR modes. CP and
CV mode cannot be used with this mode.

PEL-2000A Series User Manual
20
Front Panel Overview
DC Electronic Load
PEL-2002A
LOCAL
CAL.
F5F4F3F2
ON /
OFF
SHIFTPRESET
ENTER
F1
FILEFUNC
LOAD
9
CHAN
87
3
CLEAR
21
0
456
P0 LOCK
P3P1 P2
P6P4 P5
P9P7 P8
UTILITY
HELP
LCD display
Function keys
System Keys
Number Pad Operation
keys
PowerUSB input
Selector
Knob
LCD display
320 by 240, TFT LCD display.
Function keys
F1 F5
~
Assigned to the menu functions on
the bottom of the display.
System Keys
LOCAL
CHAN
CHAN/LOCAL is used to select
the load channel. Combined with
the shift key, Local is used to
activate local control (during
remote control via the interface or
frame link connections).