GW Instek PEL-2000B Series User manual

Programmable DC Electronic
Load
PEL-2000B Series
USER MANUAL
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 the 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
right 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
3
Table of Contents
SAFETY INSTRUCTIONS ...................................................6
GETTING STARTED.........................................................10
Main Features......................................................... 12
Series Overview ...................................................... 14
Package Contents and Accessories ......................... 16
Measurement Overview .......................................... 17
Front Panel Overview.............................................. 18
Display Overview –Mainframe ............................... 23
Rear Panel Overview ............................................... 27
Front Panel Overview –Load Module ..................... 30
LED Display Overview –Load Module .................... 33
Installation ............................................................. 36
Load Connections ................................................... 44
Frame Link Connection ........................................... 54
Channel Control Connection ................................... 56
Go/NoGo Connection ............................................. 59
OPERATING DESCRIPTION ............................................. 60
Operating Mode Description .................................. 61
Group Unit Mode ................................................... 71
Run Program .......................................................... 73
Sequence ................................................................ 76
OCP Test Automation ............................................. 80
Parallel Dynamic Loading ....................................... 81
Configurations Description ..................................... 82
Interface and System .............................................. 91
TUTORIALS ....................................................................98
Local loads ............................................................. 99
Single Channel Load ............................................. 101

PEL-2000B Series User Manual
4
Parallel Load Modules .......................................... 103
Programming........................................................ 105
Sequences ............................................................ 107
Frame Link............................................................ 108
Channel Control.................................................... 110
General Configuration Options ............................. 112
OPERATION ................................................................. 114
Local Mode Operation .......................................... 117
Mainframe Basic Operation .................................. 123
Creating a Program Sequence ............................... 146
Edit Sequence ....................................................... 158
OCP Test Automation ........................................... 167
Channel Configuration .......................................... 173
Mainframe Configuration ...................................... 199
Saving/Recalling Channels.................................... 223
INTERFACE................................................................... 258
Interface Configuration ......................................... 259
Configuring the USB Interface .............................. 266
Configuring UART Interface .................................. 271
Configuring the Multiple Interface ........................ 279
Configuring the GPIB Interface ............................. 282
Configuring Ethernet Interface .............................. 288
FAQ.............................................................................. 297
APPENDIX .................................................................... 298
Adjusting QueryModeName.................................. 299
Fuse Replacement ................................................. 301
Firmware Update .................................................. 302
Calibration ............................................................ 305
Range Chart .......................................................... 306
Default Settings .................................................... 311
Specifications ....................................................... 314

Table of Contents
5
Dimensions .......................................................... 325
Certificate Of Compliance ..................................... 328
INDEX .......................................................................... 329

PEL-2000B Series User Manual
6
SAFETY INSTRUCTIONS
This chapter contains important safety
instructions that you must follow when operating
the PEL-2000B series, and when keeping it in
storage. Read the following before operating the
PEL-2000B series to ensure your safety and to
keep the PEL-2000B series in the best possible
condition.
Safety Symbols
These safety symbols may appear in this manual or on the PEL-
2000B 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-2000B 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-2000B
series.
Avoid severe impact or rough handling that
leads to damaging the PEL-2000B series.
Do not discharge static electricity to the PEL-
2000B 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-2000B 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 specifies the measurement
categories and their requirements as follows. The PEL-2000B 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-2004B: 250VA Max
PEL-2002B: 150VA Max
Connect the protective grounding conductor of
the AC power cord to an earth ground, to avoid
electrical shock.

PEL-2000B 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-2000B
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.
(Pollution Degree) EN 61010-1 specifies the pollution degrees and
their requirements as follows. The PEL-2000B 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

SAFETY INSTRUCTIONS
9
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-2000B Series User Manual
10
GETTING STARTED
This chapter describes the features and functions of the
PEL-2000B 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 ......................................................... 12
Series Overview ...................................................... 14
Package Contents and Accessories ......................... 16
Measurement Overview .......................................... 17
Front Panel Overview .............................................. 18
Display Overview –Mainframe ............................... 23
Rear Panel Overview ............................................... 27
Front Panel Overview –Load Module...................... 30
LED Display Overview –Load Module..................... 33
Installation ............................................................. 36
Load Module Installation...................................................36
GPIB Installation................................................................39
Rack Mount Installation.....................................................40
Channel Number................................................................41
Power Up & Self Test .........................................................42
Load Connections ................................................... 44

GETTING STARTED
11
Precautions and Procedures............................................. 44
Remote (Sense) Connection............................................. 49
Single Load Connections .................................................. 50
Parallel Load Connections ................................................ 52
Frame Link Connection ........................................... 54
Channel Control Connection ................................... 56
Go/NoGo Connection ............................................. 59

PEL-2000B Series User Manual
12
Main Features
Description
The PEL-2002B and PEL-2004B are multichannel
programmable DC electronic load mainframes.
The PEL-2002B mainframe is able to hold 2 load
modules, whilst the PEL-2004B 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-2000B 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.

GETTING STARTED
13
4 panel setups.
USB flash drive support.
Interface
USB
RS-232C/RS485
LAN
GPIB (optional)

PEL-2000B Series User Manual
14
Series Overview
The PEL-2000B series comprises of two different Mainframes: the
PEL-2002B and the PEL-2004B. The Mainframes differ by the
number of load modules that can be accommodated. The PEL-
2002B has two load module slots whilst the PEL-2004B has 4. There
are 4 different load module models, the PEL-2020B, PEL-2030B,
PEL-2040B and PEL-2041B.
PEL-2020B PEL-2030B
PEL-2004B Mainframe
PEL-2040B PEL-2041B
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
500VDC
MAX
MAX
500VDC80VDC
MAX
MAX
80VDC
V sense
LOAD
DISPLAY SHORT
STATIC/
DYNA.
A / B
R
80VDC
MAXMAX
80VDC
L
MAX
80VDC MAX 80VDC
R
V senseV sense
L
LOAD
DISPLAY SHORT
STATIC/
DYNA.
R / LR / L DYNA.
STATIC/
SHORTDISPLAY
LOAD
L
V sense V sense
R
80VDC
MAX
80VDC
MAX
L
80VDC
MAX MAX
80VDC
R
R
L 20A / 80V , 100W
DC Electronic Load
20A/ 80V , 100W R
L 5A / 80V , 30W
DC Electronic Load
40A/ 80V , 250W
DC Electronic Load
70A/ 80V , 350W DC Electronic Load 10A/ 500V , 350W
DC Electronic Load
PEL-2040B PEL-2041B
PEL-2004B
PEL-2030B
PEL-2020B
PEL-2020B PEL-2040B
PEL-2002B 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
DC Electronic Load
70A / 80V , 350W DC Electronic Load
R
L 20A / 80V , 100W
DC Electronic Load
20A / 80V , 100W PEL-2040B
PEL-2020B
PEL-2002B
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 314.

GETTING STARTED
15
Load Module
Channels
Power (W)
CH L/R
(low/high
range)
Current (A)
Range
Low/High
Voltage (V)
PEL-2020B
(100Wx2)
2
100/100
2/20
0-80
PEL-2030B
(30/(25/250W))
2
30/(25/250)
5/4/40
0-80
PEL-2040B
1
(35/350)
7/70
0-80
PEL-2041B
1
(35/350)
1/10
0-500

PEL-2000B Series User Manual
16
Package Contents and Accessories
The PEL-2000B 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-2000B 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-2004B; 1 set for PEL-2002B
Options
Description
PEL-2020B
PEL-2030B
PEL-2040B
PEL-2041B
Load Module
PEL-001
GPIB interface
Optional Accessories
Description
PEL-003
Panel Cover
GTL-246
USB
GTL-248
GPIB cable
GTL-249
Frame link cable
GTL-259
RS232 cable with DB9 & RJ-45
GTL-260
RS485 cable with DB9 & RJ-45

GETTING STARTED
17
Measurement Overview
The PEL-2000B 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-2000B 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-2000B Series User Manual
18
Front Panel Overview
DC Electronic Load
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
PEL-2002B
LCD display
320 by 240, TFT LCD display.
Function keys
F1 F5
~
F1 F5
Assigned to the menu functions
on the bottom of the display.
System Keys
CHAN
LOCAL
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).

GETTING STARTED
19
CHAN
LOCAL
Brings up the
Channel Menu.
SHIFT
SHIFT +CHAN
LOCAL
CHAN
LOCAL
Used to activate
local control mode
during remote
control via the
interface
FUNC
Used to access the Program,
Sequence or OCP automation
menu.
FILE
Used to access the File menu.
HELP
UTILITY
Brings up the Help menu and
utility menu.
HELP
UTILITY
Provides help for
the last function
/key pressed.
SHIFT
SHIFT +CHAN
UTILITY
HELP
Activates the
Utility Menu.
Number pad
Enter numerical values, or to
save/recall presets (P0-P9).
0
P0
Number values.
PRESET +0
P0
Preset numbers P0-
P9.
CAL.
Decimal point and Calibration key

PEL-2000B Series User Manual
20
CAL.
Decimal point.
SHIFT
SHIFT +
CAL.
Activate calibration
mode.
Note
Please note, calibration mode is not supported.
Please see your distributor for calibration needs.
CLEAR
LOCK
Clears current values. Alternative
function locks the keys and the
Selector knob.
CLEAR
LOCK
Clears the current
value.
SHIFT
SHIFT +CLEAR
LOCK
Locks all the keys
and Selector knob.
USB Input
USB flash memory slot.
Selector Knob
Used to select operations and to
increase/decrease values.
When turned left or
right moves the
cursor in menus or
changes the selected
item or value.
When pushed
down, acts as the
Enter key.