GW Instek PEL-5000G Series User manual

High Power Electronic Load
PEL-5000G 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 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
1
Table of Contents
SAFETY INSTRUCTIONS ...................................................4
GETTING STARTED...........................................................8
PEL-5000G Series Introduction .....................................9
Accessories................................................................. 14
Operating Mode Description ......................................16
Operating Area ........................................................... 22
Appearance ................................................................. 26
FUNCTION DESCRIPTION .............................................. 36
Function keys description ........................................... 37
Test keys description ..................................................54
System and Memory keys description .........................76
Auto Sequence keys description..................................81
Entry description ........................................................85
CONNECTION ................................................................87
Rear Panel ..................................................................88
Connecting the I-monitor to an oscilloscope...............92
Master/Slave Instructions........................................... 93
INSTALLATION ...............................................................97
Check line voltage .......................................................98
Grounding requirements.............................................98
Power up ....................................................................99
Connection to the load input terminal ........................99
Interface Option ....................................................... 100
I/O connection ......................................................... 104
Load current slew rate setting................................... 105
Load wire inductance ................................................ 107

PEL-5000G Series User Manual
2
REMOTE CONTROL ...................................................... 111
Configure RS232C .....................................................112
Communication Interface programming comm
and list ..................................................................... 114
Command Syntax ......................................................127
Command List .......................................................... 129
Preset Commands ..................................................... 132
Limit Commands ......................................................147
State Commands....................................................... 150
System Commands ................................................... 156
Measure Commands .................................................158
Auto Sequence Commands .......................................159
APPLICATION ............................................................... 162
Local sense connections ........................................... 164
Remote sense connections .......................................165
Constant Current mode application ..........................166
Constant Voltage mode application........................... 169
Constant Resistance mode application .....................171
Constant Power mode application.............................173
Applications with current limiting or power limiting
function CV mode operation (charging device) .........175
CV + Current Limit mode of operation application ....177
CV + Power Limit mode of operation application ...... 179
Constant current source operating ............................181
Zero-Volt loading application .................................... 182
Parallel operation ..................................................... 183
Power Supply OCP testing ........................................184
Power Supply OPP testing ........................................186
SHORT testing ..........................................................188
Battery discharge test ...............................................190
Abnormal testing of power supply ............................ 192
BMS Protective device ..............................................195
Model 9923 current waveform generator................... 204

Table of Contents
3
SEQUENCE LOAD (remote only) .............................. 213
APPENDIX .................................................................... 216
PEL-5000G Default Settings ...................................... 217
Replacing the Fuse .................................................... 220
PEL-5000G Dimensions ............................................ 221
Terminal Dimensions ................................................ 222
PEL-5000G series Specifications ............................... 223
Certificate Of Compliance ......................................... 240
GPIB programming Example ..................................... 241
PEL-5000G series USB Instruction ............................ 245
PEL-5000G series LAN Instruction ............................ 247
PEL-5000G series Auto-Sequence function provide
EDIT, ENTER, EXIT, TEST and STORE 5 keys
operation .................................................................. 250

PEL-5000G Series User Manual
4
SAFETY INSTRUCTIONS
This chapter contains important safety instructions
that you must follow during operation and storage.
Read the following before any operation to insure
your safety and to keep the instrument in the best
possible condition.
Safety Symbols
These safety symbols may appear in this manual or on the
instrument.
WARNING
Warning: Identifies conditions or practices that
could result in injury or loss of life.
CAUTION
Caution: Identifies conditions or practices that
could result in damage to the 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
5
Safety Guidelines
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.
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.
0 is for measurements performed on circuits not
directly connected to Mains.
Do NOT position the equipment so that it is
difficult to disconnect the appliance inlet or the
power plug.
If the equipment is used in a manner not
specified by the manufacturer, the protection
provided by the equipment may be impaired.

PEL-5000G Series User Manual
6
Power Supply
WARNING
AC Input voltage range: 100-240VAC, Single
phase 90-250VAC
Frequency: 47-63Hz
To avoid electrical shock connect the protective
grounding conductor of the AC power cord to
an earth ground.
To avoid electric shock, the power cord
protective grounding conductor must be
connected to ground. No operator serviceable
components inside. Do not remove covers. Refer
servicing to qualified personnel.
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
Altitude: <2000m
Overvoltage category II

SAFETY INSTRUCTIONS
7
(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.

PEL-5000G Series User Manual
8
GETTING STARTED
The PEL-5000G series Electronic Load is designed
to test, evaluation and burn-in of DC power
supplies and batteries.
PEL-5000G Series Introduction .....................................9
Model Line Up.................................................................................................9
Main Features.................................................................................................10
Protection features ........................................................................................11
Accessories .................................................................14
Operating Mode Description ......................................16
CC Mode.........................................................................................................16
CR mode .........................................................................................................16
CV mode.........................................................................................................17
CP mode .........................................................................................................17
Slew Rate.........................................................................................................17
Dynamic Waveform Definition ..................................................................20
Operating Area ...........................................................22
Appearance ................................................................. 26
Front Panel .....................................................................................................26
LCD Display ..................................................................................................27

GETTING STARTED
9
PEL-5000G Series Introduction
Model Line Up
Normal mode
Model
Voltage
Current
Power
PEL-5004G-150-400
150V
400A
4000W
PEL-5005G-150-500
150V
500A
5000W
PEL-5006G-150-600
150V
600A
6000W
PEL-5004G-600-280
600V
280A
4000W
PEL-5005G-600-350
600V
350A
5000W
PEL-5006G-600-420
600V
420A
6000W
PEL-5004G-1200-160
1200V
160A
4000W
PEL-5005G-1200-200
1200V
200A
5000W
PEL-5006G-1200-240
1200V
240A
6000W
Turbo mode
Model
Voltage
Current
Power
PEL-5004G-150-400
150V
600A
6000W
PEL-5005G-150-500
150V
750A
7500W
PEL-5006G-150-600
150V
900A
9000W
PEL-5004G-600-280
600V
420A
6000W
PEL-5005G-600-350
600V
525A
7500W
PEL-5006G-600-420
600V
630A
9000W
PEL-5004G-1200-160
1200V
240A
6000W
PEL-5005G-1200-350
1200V
300A
7500W
PEL-5006G-1200-240
1200V
360A
9000W

PEL-5000G Series User Manual
10
Main Features
Features
5 digital V/A/W Meter can be displayed on
Large LCD display simultaneously.
Flexible CC, CR, CV, CP, CC + CV, CP + CV,
Dynamic and short circuit operation modes.
Not only CC, CR, and CP mode have parallel
operation functions, but CV mode also has
parallel operation functions.
Can set the power-on status value.
Short circuit duration can be set within short
circuit test.
Voltage meter display can be configured as
polarity positive (“+”) or negative (“-“).
Master-slave control is up to 1 Master and 7
Slaves.
Optional Interface: GPIB, RS232, USB, LAN.
Support CC, CR, CV, CP test function for solar
panel.
Provide battery BMS protection test function.
Optional 9923 load current waveform generator
to provide the battery actual discharge current
waveform simulation.
Built-in test modes include Battery Discharge,
BMS, Short circuit, OCP, OPP test modes.
Turbo mode can withstand up to 1.5 times the
current and power electronic load within 2 sec.
period, most fit BMS, Short circuit, OCP, OPP
test.
Protection against V, I, W, and ºC

GETTING STARTED
11
Protection features
The protection features of the PEL-5000G series Electronic load
modules are as follows:
Overvoltage
protection
The Electronic Load will turn OFF Load OFF if the
overvoltage circuit is tripped. The message OVP
will be displayed on the LCD. When the OVP fault
has been removed the load can be set to sink
power again. While the unit will attempt to
protect itself given an OVP state it is strongly
advised to guard against any potential OVP fault
state by using external protection and the correctly
rated electronic load.
The Overvoltage protection circuit is set at a
predetermined voltage and cannot be adjusted.
The OVP level is 105% of the PEL-5004G-150-400,
PEL-5005G-150-500, PEL-5006G-150-600, PEL-
5004G-600-280, PEL-5005G-600-350, PEL-5006G-
600-420 Series nominal voltage rating. The OVP
level is 105% of the PEL-5004G-1200-160, PEL-
5005G-1200-200, PEL-5006G-1200-240 nominal
voltage rating.
Caution
Never apply an AC voltage to the input of the PEL-
5000G series Load. Do not apply a DC voltage that is
higher than PEL-5000G series Load rating. If this
advice is ignored it is likely that damage will be
caused to the electronic load module. This damage
will not be covered by the warranty.
Over current
protection (OCP)
The PEL-5000G series electronic load monitors the
power dissipation level. The input to the load is
automatically switched to LOAD OFF if the power
dissipation is greater than 104% of the rated power
input. If an over power condition occurs the
display will show OCP.

PEL-5000G Series User Manual
12
Over power
protection (OPP)
The PEL-5000G series Electronic Load monitors
the power dissipation level. The input to the load
is automatically switched to LOAD OFF if the
power dissipation is greater than 105% of the rated
power input. If an over power condition occurs
the display will show OPP.
Over temperature
protection
The load internal temperature at the heat sink is
monitored. If the temperature reaches
approximately 90°C ± 5°C the OTP message will
be displayed and the unit will automatically
switch to the LOAD OFF state. If an OTP error
occurs please check the ambient temperature is
between 0 to 40°C. Also ensure that the front and
rear air vents of the mainframe are not obstructed.
The air flow is taken from the front of the
mainframe and exhausted from the rear. Therefore
a suitable gap needs to be left at the rear of the
mainframe. A minimum of 15cm is recommended.
After a suitable cooling period the load can be
switched.
Reverse Polarity
The PEL-5000G series load module will tolerate a
reverse current up to the maximum current rating
of the load module. The”-“symbol will be shown
on the voltage and current displays.
Note
Damage will occur if the reverse current is higher than
the load module’s maximum rating. If a reverse
current is noticed turn off and disconnect the dc
power source and turn the load off. The connections
between the DC Source and the Load Module can now
be correctly made.

GETTING STARTED
13
Caution
If a reverse polarity situation occurs the load will sink
power even if the LOAD button is OFF. No current will
be displayed on the PEL-5000G series load module.
Current up to the load’s maximum current rating will
be tolerated in reverse polarity. However there is no
OVP OCP and OPP protection. It is strongly
recommended that the load lines be fused if it is likely
that the load could be subject to reverse polarity.
These fuses should be fast acting and rated at the
maximum current of the load module +5%.

PEL-5000G Series User Manual
14
Accessories
Standard Accessories
Description
PCs
PEL-5000G series operation
manual
It can be downloaded from GW
Instek website.
SLS10B RED; PLUG CONN 20A
RED T
Please refer to Fig. 2 on page 15.
This terminal (SLS10B) is for
Vsense.
1
SLS10B BLK; PLUG CONN 20A
BLK T
Please refer to Fig. 2 on page 15.
This terminal (SLS10B) is for
Vsense.
1
PTV1-12；PIN TRML
Please refer to Fig. 1 on page 15.
4
HD-DSUB 15pin MALE to MALE
150cm
1
RND SCREW M4x0.7+S+P
L=20mm
4
Hexagon head M8*1.25 L=25mm
NI
2
K-NUT M4X0.7 NI
4
NUT M8X1.25 NI
2
WASHER INSIDE DIA-8.5
OUTSIDE
4
SPRING WASHER INSIDE φ8
2
PEL-5004G,PEL-5005G,PEL-
5006G handles
PEL-028
1
Rack Mount Kit For PEL-
5004G,PEL-5005G,PEL-5006G
PEL-031
1
Optional Accessories
Description
PCs
GPIB+RS232 interface
PEL-030
1
RS232 interface
PEL-023
1
9923+RS232 interface
PEL-032
1

GETTING STARTED
15
GPIB interface
PEL-022
1
USB interface + USB driver (The
driver can be downloaded from
GW Instek website)
PEL-025
1
LAN interface + LAN driver (The
driver can be downloaded from
GW Instek website)
PEL-024
1
GPIB cable
GTL-250 GPIB Cable, 1m
1
GPIB cable
GTL-248 GPIB Cable, 2m
1
USB cable
GTL-246 USB Cable, 1.2m
1
Fig. 1
Fig. 2

PEL-5000G Series User Manual
16
Operating Mode Description
CC Mode
Background
With the operating mode of Constant Current, the
PEL-5000G series electronic load will sink a current
in accordance with the programmed value
regardless of the input voltage
Current Setting
Load
Current
Input Voltage V
CC
CR mode
Background
At Constant Resistance mode, the PEL-5000G
series Electronic Load will sink a current linearly
proportional to the load input voltage in
accordance with the programmed resistance
setting.
Resistance
Setting
Load
Current
Input Voltage V
I

GETTING STARTED
17
CV mode
Background
At Constant Voltage mode, the PEL-5000G series
Electronic Load will attempt to sink enough
current until the load input voltage reaches the
programmed value.
Voltage
Setting
Load
Current
Input Voltage V
I
CP mode
Background
At Constant Power mode, the PEL-5000G series
Electronic Load will attempt to sink load power
(load voltage * load current) in accordance with
the programmed power.
Power
Setting
Load
Current
Input Voltage V
I
Slew Rate
Background
Slew rate is defined as the change in current or
voltage over time. A programmable slew rate

PEL-5000G Series User Manual
18
allows for a controlled transition from one load
setting to another. It can be used to minimize
induced voltage drops on inductive power wiring,
or to control induced transients on a test device
(such as would occur during power supply
transient response testing).
In cases where the transition from one setting to
another is large, the actual transition time can be
calculated by dividing the voltage or current
transition by the slew rate. The actual transition
time is defined as the time required for the input to
change from 10% to 90% or from 90% to 10% of the
programmed excursion.
In cases where the transition from one setting to
another is small, the small signal bandwidth (of the
load) limits the minimum transition time for all
programmable slew rates. Because of this
limitation, the actual transition time is longer than
the expected time based on the slew rate, as shown
in the picture below.
Rise Time Transition
Limitation
Expected time
Actual time
10%
0%
100%
90%
Slew Rate
Time
mS
Voltage(Volts) or
Current (Amps)