GW Instek PEL-500 Series User manual

DC Electronic Load
PEL-500 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 .................................................. 3
GETTING STARTED.......................................................... 7
PEL-500 Series Introduction ...................................... 9
Accessories.............................................................. 12
Accessories Installation Description ........................ 13
Operating Mode Description ................................... 15
Operating Area ........................................................ 20
APPEARANCE .......................................................... 22
Front Panel .............................................................. 22
Connecting the I-monitor to an oscilloscope ........... 55
LCD Display............................................................. 56
Rear Panel ............................................................... 63
INSTALLATION .............................................................. 64
Check line voltage.................................................... 65
Power up ................................................................. 66
USB & RS232 interface option ................................. 67
Load wire inductance............................................... 68
Input terminal and wire consideration ..................... 72
REMOTE CONTROL ....................................................... 75
Interface Configuration ............................................ 76
Communication Interface programming command
list ........................................................................... 78
Command Syntax ..................................................... 86
Command List ......................................................... 88
PRESET Commands ................................................. 91
Limit Commands ....................................................101
STAGE commands ..................................................103
System Commands .................................................109

PEL-500 User Manual
2
Measure Commands .............................................. 112
APPLICATION ...............................................................113
Local sense connections ........................................ 114
Remote sense connections .................................... 115
Constant Current mode application ....................... 117
Constant Resistance mode application .................. 121
Constant Voltage mode application ....................... 125
Constant Power mode application ......................... 128
Zero-Volt loading application................................. 132
PEL-500 series electronic load OCP, OPP, SHORT
operation flow Chart .............................................. 133
Power Supply OCP testing ..................................... 134
Power Supply OPP testing ..................................... 137
SHORT testing....................................................... 140
APPENDIX ....................................................................142
Replacing the Fuse................................................. 143
PEL-500 Default Settings ....................................... 144
PEL-500 Dimensions .............................................. 146
PEL-500 series Specifications ................................ 148
Declaration of Conformity...................................... 153

SAFETY INSTRUCTIONS
3
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.

PEL-500 User Manual
4
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.

SAFETY INSTRUCTIONS
5
Power Supply
WARNING
AC Input voltage range: 115Vac / 230Vac ±10%
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

PEL-500 User Manual
6
(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.

GETTING STARTED
7
GETTING STARTED
More and more electronic products, such as mobile phones, laptops,
tablet chargers, mobile power supplies, wireless chargers, electric
hand tool chargers, etc., are currently using a single input voltage.
In response to this trend, Electronics introduced the single-machine
PEL-500 series of five electronic loads, including 80V and 500V,
350W and 700W four loads, and a 250W / 80V / 50A low wattage
load to meet the needs of various tests on the market. .
PEL-500 series electronic load continues the functions of various
electronic load modes, including constant current, constant
resistance, constant voltage, and constant power, dynamic and
short-circuits mode, high-precision 5bit voltage, current, and power
meter display simultaneously, full range RS232 and USB interfaces
are standard.
In addition, it also includes various complete performance tests for
battery CC, CP, timed discharge, etc., and Surge function for
simulating electronic product startup overcurrent and hot plugging
instantaneous current.
Each load module is capable of sinking a wide range of voltage and
current values. The load modules are limited by the maximum
power they can sink. For example the PEL-500 can sink up to 50A
and 80Vdc at a maximum of 250W. So if the maximum voltage of
80Vdc is present at the load’s input terminals a maximum load
current of 3.125A is possible. Conversely if the PEL-503-80-50 is
required to sink 50A the voltage must be limited to 5V.

PEL-500 User Manual
8
PEL-500 Series Introduction....................................... 9
Main Features .....................................................................................9
Protection features...........................................................................10
Accessories.............................................................. 12
Accessories Installation Description ........................ 13
Operating Mode Description ................................... 15
CC Mode ...........................................................................................15
CR mode............................................................................................15
CV mode............................................................................................16
CP mode ............................................................................................16
Slew Rate ...........................................................................................17
Dynamic Waveform Definition.....................................................18
Operating Area ........................................................ 20