Instek PEL-5006C-150-600, PEL-5008C-1200-320, PEL-5024C-600-1680, PEL-5008-150-800, PEL-5010C-150-1000 User Manual

High Power Electronic Load

PEL-5000C 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

Table of Contents

SAFETY INSTRUCTIONS .................................................. 4

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

PEL-5000C Series Introduction .............................. 10

Accessories............................................................ 13

Operating Mode Description ................................. 14

Operating Area ...................................................... 20

Appearance ............................................................ 27

FUNCTION DESCRIPTION ............................................. 38

Function keys description ...................................... 39

Test keys description ............................................. 53

System keys description ........................................ 68

Test keys description ............................................. 77

CONNECTION ............................................................... 79

Rear Panel ............................................................. 80

Connecting the I-monitor to an oscilloscope ......... 84

Master/Slave Instructions ..................................... 85

INSTALLATION .............................................................. 88

Check line voltage .................................................. 89

Grounding requirements ....................................... 89

Power up ............................................................... 90

Connection to the load Input Terminal .................. 90

GPIB & RS232 interface option .............................. 91

RS232 interface option .......................................... 92

GPIB interface option ............................................ 92

USB interface option ............................................. 92

LAN interface option ............................................. 93

I/O connection ...................................................... 93

1

PEL-5000C User Manual

Load current slew rate setting ............................... 94

Load wire inductance ............................................ 96

REMOTE CONTROL ...................................................... 100

Interface Configuration ........................................ 101

Communication Interface programming command

list ....................................................................... 103

Command Syntax ................................................. 115

Command List ..................................................... 117

PRESET Commands ............................................. 119

Limit Commands ................................................. 132

STAGE commands ............................................... 135

System Commands .............................................. 141

Measure Commands ............................................ 143

APPLICATION ............................................................... 144

Local sense connections ...................................... 145

Remote sense connections .................................. 146

Constant Current mode application ..................... 148

Constant Voltage mode application ..................... 151

Constant Resistance mode application ................ 153

Constant Power mode application ....................... 155

CC + CV mode of operation application ............... 157

CP + CV mode of operation application ............... 159

Constant current source operating ....................... 161

Zero-Volt loading application ............................... 162

Parallel operation ................................................ 163

Power Supply OCP testing ................................... 164

Power Supply OPP testing ................................... 166

SHORT testing ..................................................... 168

Battery discharge test .......................................... 171

APPENDIX .................................................................... 175

PEL-5000C Default Settings ................................. 176

PEL-5000C Dimensions ........................................ 183

2

Table of Contents

PEL-5000C series Specifications .......................... 187

Certificate Of Compliance .................................... 208

GPIB programming Example ................................ 209

PEL-5000C series USB Instruction ....................... 213

PEL-5000C series Auto, Sequence function provide
EDIT, ENTER, EXIT, TEST and STORE 5 keys

operation ............................................................. 215

PEL-5000C series LAN Instruction ....................... 219

3

PEL-5000C User Manual

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.

4

SAFETY INSTRUCTIONS

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 Guidelines

5

PEL-5000C User Manual

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

6

SAFETY INSTRUCTIONS

(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.

7

PEL-5000C User Manual

PEL-5000C Series Introduction ............................. 10

Main Features ............................................................................... 10

Protection features ....................................................................... 11

Accessories ........................................................... 13

Operating Mode Description ................................ 14

CC Mode ....................................................................................... 14

CR mode ........................................................................................ 14

CV mode ........................................................................................ 14

CP mode ........................................................................................ 15

GETTING STARTED

The PEL-5000C series Electronic Load is designed to test,
evaluation and burn-in of DC power supplies and batteries.

The PEL-5000C series high power electronic Load can be controlled
locally at the front panel or remotely via computer over the
GPIB/RS232/USB/LAN. Constant Current (CC) mode, Constant
Resistance (CR) mode, and Constant Voltage (CV) mode. And
Constant Power (CP) mode. The wide range dynamic load with
independent rise and fall current slew rate and analog
programming input with arbitrary wave-form input is available in
Constant Current mode.

8

GETTING STARTED

Slew Rate ....................................................................................... 15

Dynamic Waveform Definition................................................. 17

Operating Area ...................................................... 20

Appearance ............................................................ 27

Front Panel .................................................................................... 27

LCD Display ................................................................................. 28

9

PEL-5000C User Manual

Features

 CC, CR, CV, CP, Dynamic, and Short Operating

Mode.

 Remote control via a choice of computer

interfaces.

 High accuracy & resolution with 16 bit voltage

and current meter.

 Built in pulse generators for dynamic loading.
 Independently adjustable current rise and fall

times.

 Short circuit test with current measurement
 Dedicated over current and overpower

protection test functions

 Programmable voltage sense capability.
 Full protection from overpower, over-

temperature, overvoltage, and reverse polarity.

 Analogue programming input for tracking an

external signal

 Current Monitor with BNC (non-isolated)

socket.

 Digital Calibration
 Advance Fan speed control
 Ability to save load setup via the mainframe

memory (150 store/recall locations)

 Auto sequence function allowing test routines

to be set from the mainframe

PEL-5000C Series Introduction

Main Features

10

GETTING STARTED

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-5000C series
nominal voltage rating.

Caution

Never apply an AC voltage to the input of the PEL­5000C series Load. Do not apply a DC voltage that is
higher than PEL-5000C 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-5000C series Electronic Load monitors the
current level. The input to the load is automatically
switched to LOAD OFF if the current is greater
than 104% of the rated current input. If an over
current condition occurs the display will show
OCP.

Over power
protection (OPP)

The PEL-5000C 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.

Protection features

The protection features of the PEL-5000C series Electronic load
modules are as follows:

11

PEL-5000C User Manual

Over temperature
protection

The load internal temperature at the heat sink is
monitored. If the temperature reaches
approximately 90°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-5000C 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.

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-5000C 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%.

12

GETTING STARTED

Standard Accessories

Description

PCs

PEL-5000C series operation manual

It can be downloaded
from GW Instek website.

BANANA PLUGS

1

BNC – BNC CABLE

1

HD-DSUB 15PIN Parallel wire

1 Optional Accessories

Description

PCs

GPIB+RS232 interface

PEL-030

1

RS232 interface

PEL-023

1

GPIB interface

PEL-022

1

USB interface + USB driver (The
driver can be downloaded from GW
Instek website)

PEL-025

LAN interface + LAN driver (The
driver can be downloaded from GW
Instek website)

PEL-024

GPIB cable

GTL-250 GPIB Cable, 0.6m

1

GPIB cable

GTL-248 GPIB Cable, 2m

1

USB cable

GTL-246 USB Cable, 1.2m

1

PEL-5000C, AEL-5006, AEL-5008,
AEL-5012 and AEL-5015 handle

PEL-028

1
PEL-5000C Hook Ring

PEL-026

Rack Mount Kit For PEL-5006C

PEL-027-1

Rack Mount Kit For PEL-5008C,
PEL-5010C, PEL-5012C

PEL-027-2

Rack Mount Kit For PEL-5015C,
PEL-5018C

PEL-027-3

Rack Mount Kit For PEL-5020C,
PEL-5024C

PEL-027-4

Accessories

13

PEL-5000C User Manual

Background

With the operating mode of Constant Current, the
PEL-5000C 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

Background

At Constant Resistance mode, the PEL-5000C
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

Background

At Constant Voltage mode, the PEL-5000C series
electronic load will attempt to sink enough current

Operating Mode Description

CC Mode

CR mode

CV mode

14

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-5000C 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

Background

Slew rate is defined as the change in current or
voltage over time. A programmable slew rate
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

GETTING STARTED

Slew Rate

15

PEL-5000C User Manual

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.

Rise Time
Transition
Limitation

Therefore, both minimum transition time and slew
rate must be considered when determining the
actual transition time. Following detail description
is excluding in specification sheet.

The minimum transition time for a given slew rate
as about a 30% or greater load change, the slew
rate increases from the minimum transition time to
the Maximum transition time at a 100% load
change. The actual transition time will be either the
minimum transition time, or the total slew time
(transition divided by slew rate), whichever is
longer.

Example

PEL-5012C-600-840 600V/840A/12000W (CCH ­CCL >840Ax 30%)

16

GETTING STARTED

Use the following formula to calculate the
minimum transition time for a given slew rate min
transition time=252A/slew rate (in amps/second).

10.5uS (252A/24) x 0.8(10%~90%) =8.4uS

Use the following formula to calculate the
maximum transition time for a given slew rate max
transition time=840/slew rate (in amps/second).

35uS (840A/24) x 0.8(10~90%) = 28uS

EX. CCH=168A, CCL=0A Slew Rate =24A, the
expected time is 5.6uS but the actual Transition

Time Will be limited to 4.8Us.

7uS (168/24 x 0.8(10%~90%) = 5.6uS

Note

When CC mode rang1 slew rate, CCL setting at least

0.1% larger than the specification.

Background

Along with static operation the PEL-5000C series
electronic load are built with a dynamic mode for
operation in Constant Current (CC), Constant
Resistance (CR) or Constant Power (CP). This
allows the test engineer to simulate real world
pulsing loads or implement a load profile that
varies with time.

A dynamic waveform can be programmed from
the front panel of the PEL-5000C electronic load.
The user would first set a High and low value of
load current using the Level button. The Dynamic
Setting then allows for the rise and fall time
between these 2 current values to be adjusted. The
time period that the waveform is high (Thigh)
along with the time period that the waveform is
low (Tlow) can also be set.

Dynamic Waveform Definition

17

PEL-5000C User Manual

Dynamic Wave
form

I

V

LOAD

CURRENT

RISE

SLEW RATE

HIGH LOAD

LOAD

LOW LOAD

LEVEL

T

HIGHTLOW

FALL SLEW RATE

The dynamic waveform can also be set up via the
optional computer interface. Dynamic waveform
settings made from the front panel of the load
module can also be saved in the memory of the
PEL-5000C series Electronic Load. For the
store/recall procedure and the computer
command set please refer to the relevant operating
manual for the PEL-5000C series Electronic Load.

Further dynamic waveform definitions are:

 The period of dynamic waveform is Thigh +

Tlow

 The dynamic frequency = 1 /( Thigh + Tlow )
 The duty cycle = Thigh / ( Thigh + Tlow )

Example 1

PEL-5000C series, Dynamic up to 50 KHz
frequency

Dynamic highest frequency 50 KHz = 0.02ms=20us

Setting THIGH=10 uS, TLOW=10uS,
THIGH+TLOW=20uS

CCH-CCL/SR≦10uS

Setting CCH=30A, CCL=10A

(30-10)/2.5A/uS≦10 uS

8 uS≦10 uS ,Compliance with frequency 50KHz

Example 2

Setting THIGH=10 uS, TLOW=10uS,
THIGH+TLOW=20uS

CCH-CCL/SR≦10uS

18

GETTING STARTED

Setting CCH=50A, CCL=0A

(50-0)/2.5A/uS=20uS, 20uS>10uS, It's not
compliance the frequency 50 KHz

The analogue programming input also provides a
convenient method of implementing a dynamic
waveform.

19

PEL-5000C User Manual

PEL-5006C-150-600
power contour

150V

10V

600A

40A

6KW

Power Curve

Current

0.7V

Voltage

PEL-5008C-150-800
power contour

150V

10V

800A

53.3A

8KW

Power Curve

Current

Voltage

0.7V

PEL-5010C-150-1000
power contour

150V

10V

1000A

66.6A

10KW

Power Curve

Current

Voltage

0.7V

Operating Area

The PEL-5000C series electronic load can be operated for manual
and GPIB operation.

The PEL-5000C series high power electronic Load can be controlled
locally at the front panel or remotely via computer over the
GPIB/RS232/USB/LAN. Constant current (CC) mode, constant
resistance (CR) mode, and constant voltage (CV) mode and
constant power (CP) mode. The wide range dynamic load with
independent rise and fall current slew rate and analog
programming input with arbitrary wave-form input is available in
Constant Current mode.

20

GETTING STARTED

PEL-5012C-150-1200
power contour

150V

10V

1200A

80A

12KW

Power Curve

Current

Voltage

0.7V

PEL-5015C-150-1500
power contour

150V

10V

1500A

100A

15KW

Power Curve

Current

Voltage

0.7V

PEL-5018C-150-1800
power contour

150V

10V

1800A

120A

18KW

Power Curve

Current

Voltage

0.7V

PEL-5020C-150-2000
power contour

150V

10V

2000A

133.3A

20KW

Power Curve

Current

Voltage

0.7V

21

PEL-5000C User Manual

PEL-5024C-150-2000
power contour

150V

12V

2000A

160A

24KW

Power Curve

Current

Voltage

0.7V

PEL-5006C-600-420
power contour

600V

14.29V

420A

10A

6KW

Power Curve

Current

Voltage

10V

PEL-5008C-600-560
power contour

600V

14.29V

560A

13.33A

8KW

Power Curve

Current

Voltage

10V

PEL-5010C-600-700
power contour

600V

14.29V

700A

16.66A

10KW

Power Curve

Current

Voltage

10V

22

GETTING STARTED

PEL-5012C-600-840
power contour

600V

14.29V

840A

20A

12KW

Power Curve

Current

Voltage

10V

PEL-5015C-600-1050
power contour

600V

14.29V

1050A

25A

15KW

Power Curve

Current

Voltage

10V

PEL-5018C-600-1260
power contour

600V

14.29V

1260A

4.16A

18KW

Power Curve

Current

Voltage

10V

PEL-5020C-600-1400
power contour

600V

14.29V

1400A

33.33A

20KW

Power Curve

Current

Voltage

10V

23

PEL-5000C User Manual

PEL-5024C-600-1680
power contour

600V

14.29V

1680A

40A

24KW

Power Curve

Current

Voltage

10V

PEL-5006C-1200-240
power contour

1200V

25V

240A6A

6KW

Power Curve

Current

Voltage

15V

1000V

3A

PEL-5008C-1200-320
power contour

1200V

25V

320A8A

8KW

Power Curve

Current

Voltage

15V

1000V

4A

PEL-5010C-1200-400
power contour

1200V

25V

400A

10A

10KW

Power Curve

Current

Voltage

15V

1000V

5A

24

GETTING STARTED

PEL-5012C-1200-480
power contour

1200V

25V

480A12A

12KW

Power Curve

Current

Voltage

15V

1000V

6A

PEL-5015C-1200-600
power contour

1200V

25V

600A15A

15KW

Power Curve

Current

Voltage

15V

1000V

7.5A

PEL-5018C-1200-720
power contour

1200V

25V

720A

18A

18KW

Power Curve

Voltage

15V

1000V

9A

PEL-5020C-1200-800
power contour

Current

1200V

25V

800A20A

20KW

Power Curve

Voltage

15V

1000V

10A

25

PEL-5000C User Manual

PEL-5024C-1200-960
power contour

1200V

25V

960A24A

24KW

Power Curve

Current

Voltage

15V

1000V

12A

26

GETTING STARTED

3 4

5

6 721

1

Power switch

2

LCD Multi-function display

3

System keys

4

Function keys

5

Test function keys

6

Number keypad

7 Knob setting

Appearance

Front Panel

27

LCD Display

1

3

6 7

9

13

2

15

8

14

4

5

12

9

10
11

1

Model number
and sink ranges

The model number along with maximum
voltage, current and power values are detailed
in this position at the top of the load front
panel.

2

Left 5 digit LCD
display

The 5 digit LCD display is a multi-function
display. The function of the display changes
depending whether the user is in NORMAL
mode or in a SHORT, OPP or OCP modes:

Status display:
When enter System Setting or AUTO
SEQUENCE, the display setting item.

Normal mode

The left 5 digit display displays the voltage
present at the load’s input terminals. The
value displayed will include the automatic
voltage compensation if the sense terminals
are also connected to the device under test
(DUT).

Note

If V-sense is set to “AUTO” and the sense leads
are connected to the DUT the losses need to be
approx. 700mV (PEL-5006C-150-600) before the
display compensates for the voltage loss.

If V-sense is set to “ON” and the sense terminals
are connected to the DUT the load will check and
compensate for all voltage drops.

PEL-5000C User Manual

28