High Power DC Electronic Load 63200 Series Operation

High Power DC Electronic Load 63200 Series Operation
High Power DC Electronic Load
63200 Series
Operation & Programming Manual
High Power
DC Electronic Load
63200 Series
Operation & Programming
Manual
Version 2.4
November 2011
P/N A11 000599
Legal Notices
The information in this document is subject to change without notice.
Chroma ATE INC. makes no warranty of any kind with regard to this manual, including, but
not limited to, the implied warranties of merchantability and fitness for a particular purpose.
Chroma ATE INC. shall not be held liable for errors contained herein or direct, indirect,
special, incidental or consequential damages in connection with the furnishing, performance,
or use of this material.
CHROMA ATE INC.
66 Hwa-Ya 1st Rd., Hwa-Ya Technology Park, Kuei-Shan 33383, Taoyuan Hsien, Taiwan
Copyright Notices. Copyright 2003 Chroma ATE INC., all rights reserved. Reproduction,
adaptation, or translation of this document without prior written permission is prohibited,
except as allowed under the copyright laws.
ii
Warranty
All Chroma instruments are warranted against defects in material and workmanship for a
period of one year after date of shipment. Chroma agrees to repair or replace any
assembly or component found to be defective, under normal use during this period.
Chroma’s obligation under this warranty is limited solely to repairing any such instrument,
which in Chroma’s sole opinion proves to be defective within the scope of the warranty when
returned to the factory or to an authorized service center. Transportation to the factory or
service center is to be prepaid by purchaser. Shipment should not be made without prior
authorization by Chroma.
This warranty does not apply to any products repaired or altered by persons not authorized
by Chroma, or not in accordance with instructions furnished by Chroma. If the instrument is
defective as a result of misuse, improper repair, or abnormal conditions or operations, repairs
will be billed at cost.
Chroma assumes no responsibility for its product being used in a hazardous or dangerous
manner either alone or in conjunction with other equipment. High voltage used in some
instruments may be dangerous if misused. Special disclaimers apply to these instruments.
Chroma assumes no liability for secondary charges or consequential damages and in any
event, Chroma’s liability for breach of warranty under any contract or otherwise, shall not
exceed the purchase price of the specific instrument shipped and against which a claim is
made.
Any recommendations made by Chroma for use of its products are based upon tests
believed to be reliable, but Chroma makes no warranty of the results to be obtained. This
warranty is in lieu of all other warranties, expressed or implied, and no representative or
person is authorized to represent or assume for Chroma any liability in connection with the
sale of our products other than set forth herein.
CHROMA ATE INC.
66 Hwa-Ya 1st Rd., Hwa-Ya Technology Park,
Kuei-Shan 33383, Taoyuan County, Taiwan
Tel: 886-3-327-9999
Fax: 886-3-327-2886
e-mail: [email protected]
http://www.chromaate.com
iii
Material Contents Declaration
The recycling label shown on the product indicates the Hazardous Substances contained in
the product as the table listed below.
: See <Table 1>.
: See <Table 2>.
<Table 1>
Hazardous Substances
Part Name
Lead
Mercury Cadmium Hexavalent Polybrominated Polybromodiphenyl
Chromium
Biphenyls
Ethers
Pb
Hg
Cd
Cr6+
PBB
PBDE
PCBA
O
O
O
O
O
O
CHASSIS
O
O
O
O
O
O
ACCESSORY
O
O
O
O
O
O
O
O
O
O
O
O
“O” indicates that the level of the specified chemical substance is less than the threshold level
specified in the standards of SJ/T-11363-2006 and EU 2005/618/EC.
PACKAGE
“ ” indicates that the level of the specified chemical substance exceeds the threshold level
specified in the standards of SJ/T-11363-2006 and EU 2005/618/EC.
Disposal
Do not dispose of electrical appliances as unsorted municipal waste, use separate collection
facilities. Contact your local government for information regarding the collection systems
available. If electrical appliances are disposed of in landfills or dumps, hazardous substances
can leak into the groundwater and get into the food chain, damaging your health and
well-being. When replacing old appliances with new one, the retailer is legally obligated to
take back your old appliances for disposal at least for free of charge.
iv
<Table 2>
Hazardous Substances
Part Name
Lead
Mercury Cadmium Hexavalent Polybrominated Polybromodiphenyl
Chromium
Biphenyls
Ethers
Hg
Cd
Cr6+
PBB
PBDE
PCBA
O
O
O
O
O
CHASSIS
O
O
O
O
O
ACCESSORY
O
O
O
O
O
O
O
O
O
O
Pb
PACKAGE
O
“O” indicates that the level of the specified chemical substance is less than the threshold level
specified in the standards of SJ/T-11363-2006 and EU 2005/618/EC.
“ ” indicates that the level of the specified chemical substance exceeds the threshold level
specified in the standards of SJ/T-11363-2006 and EU 2005/618/EC.
1.
2.
Chroma is not fully transitioned to lead-free solder assembly at this moment; however,
most of the components used are RoHS compliant.
The environment-friendly usage period of the product is assumed under the operating
environment specified in each product’s specification.
Disposal
Do not dispose of electrical appliances as unsorted municipal waste, use separate collection
facilities. Contact your local government for information regarding the collection systems
available. If electrical appliances are disposed of in landfills or dumps, hazardous substances
can leak into the groundwater and get into the food chain, damaging your health and
well-being. When replacing old appliances with new one, the retailer is legally obligated to
take back your old appliances for disposal at least for free of charge.
v
CE-Conformity Declaration
For the following equipment:
Product Name: DC Electronic Load
Model Name:63201, 63202, 63203, 63204, 63205, 63206, 63207, 63208, 63209 ,63210
Manufacturer’s Name: Chroma ATE Inc.
Manufacturer’s Address:
66 Hwa-Ya 1st Rd., Hwa-Ya Technical Park,
Kuei-Shan Hsiang, Taoyuan Hsien, Taiwan
is herewith confirmed to comply with the requirements set out in the Council
Directive on the Approximation of the Laws of the Member States Relating to
Electromagnetic Compatibility (89/336/EEC) and electrical equipment designed
for use within certain voltage limits (73/23/EEC;93/68/EEC)
For electromagnetic compatibility, the following standards were applied:
EMC:
EN61326-1(1997):CISPR22:1994+A1 Class A
IEC 1000-3-2:1995
Harmonics Current
IEC 1000-3-3:1995
Voltage Fluctuations
IEC 1000-4-2:1995
Electrostatic Discharge
IEC 1000-4-3:1995
Radio-Frequency Electromagnetic Field
IEC 1000-4-4:1995
Fast Transient Burst
IEC 1000-4-5:1995
Surge Immunity test
IEC 1000-4-6:1995
Immunity To Conducted Disturbances, Induced
By Radio Frequency Fields
IEC 1000-4-11:1994 Voltage Dips, Short Interruptions and Voltage
Variations Immunity Test
For safety requirement, the following standard was applied:
Safety:
EN61010-1(1993)+A2(1995)
Taiwan
Place
May 2005
Date
Vice President, Engineering
Warning:
This is a class A product. In a domestic environment this product may cause radio
interference in which case the user may be required to take adequate measures.
vi
Safety Summary
The following general safety precautions must be observed during all phases of operation,
service, and repair of this instrument. Failure to comply with these precautions or specific
WARNINGS given elsewhere in this manual will violate safety standards of design,
manufacture, and intended use of the instrument. Chroma assumes no liability for the
customer’s failure to comply with these requirements.
BEFORE APPLYING POWER
Verify that the power is set to match the rated input of this power
supply.
PROTECTIVE GROUNDING
Make sure to connect the protective grounding to prevent an electric
shock before turning on the power.
NECESSITY OF PROTECTIVE GROUNDING
Never cut off the internal or external protective grounding wire, or
disconnect the wiring of protective grounding terminal. Doing so will
cause a potential shock hazard that may bring injury to a person.
FUSES
Only fuses with the required rated current, voltage, and specified type
(normal blow, time delay, etc.) should be used. Do not use repaired
fuses or short-circuited fuse holders. To do so could cause a shock or
fire hazard.
DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE
Do not operate the instrument in the presence of flammable gases or
fumes. The instrument should be used in an environment of good
ventilation.
DO NOT REMOVE THE COVER OF THE INSTRUMENT
Operating personnel must not remove the cover of the instrument.
Component replacement and internal adjustment can be done only by
qualified service personnel.
vii
Safety Symbols
DANGER – High voltage.
Explanation: To avoid injury, death of personnel, or damage to
the instrument, the operator must refer to an explanation in the
instruction manual.
High temperature: This symbol indicates the temperature is now
higher than the acceptable range of human. Do not touch it to
avoid any personal injury.
Protective grounding terminal: To protect against electrical
shock in case of a fault. This symbol indicates that the terminal
must be connected to ground before operation of equipment.
WARNING
CAUTION
The WARNING sign denotes a hazard. It calls attention to a
procedure, practice, or the like, which, if not correctly performed
or adhered to, could result in personal injury. Do not proceed
beyond a WARNING sign until the indicated conditions are fully
understood and met.
The CAUTION sign denotes a hazard. It may result in personal
injury or death if not noticed timely. It calls attention to
procedures, practices and conditions.
The Notice sign denotes important information in procedures,
applications or the areas that require special attention. Be sure
to read it carefully.
viii
Revision History
The following lists the additions, deletions and modifications in this manual at each revision.
Date
Mar. 2003
May 2003
Jan. 2004
Jan. 2005
Jun. 2005
Nov. 2005
Jun. 2006
Dec. 2006
Mar. 2007
Mar. 2008
July 2009
Nov. 2010
Version Revised Sections
1.3
Update “CE Conformity Declaration” to add model 63205/63207/63209
Update “Specifications” for changes and addition of model
63205/63207/ 63209
Add the rear panel of Model 63205/630206/63207/63208/63209 in
“Rear Panel Description”
1.4
Add a note to the “Specifications” for the fuse of 63205
1.5
Modify the “Specifications” in Chapter 1 for power rating changes for
all models.
Add a section of “Dimension Outline for 63200 Series” in Chapter 1.
1.6
Add the following sections:
– “Diagram of RS485 Parallel Connections” in Chapter 2.
– “Load Surge Capability” in Chapter 3.
– “Timer Function for Battery Discharge Testing” in Chapter 3.
Modify the following sections:
– “Specifications” in Chapter 1.
– “Protection Features” in Chapter 3.
1.7
Change the address of Chroma in CE-Conformity Declaration
1.8
Modify the “Specifications” in Chapter 1.
1.9
Modify the followings:
– “Specifications” to add a new model 63210.
– Description in the section of “Parallel Connections”.
– “Load Connections” in the section of “Application Connection”.
– Commands in the chapter of “Language Dictionary”.
– “Questionable Status” in the chapter of “Status Reporting”.
– “Command Summary” in the chapter of “Index”.
Add “Installing the 63200 Protective Cover” in the section of
“Dimension Outline for 63200 Series”.
2.0
Add the following:
– “Von Protection”, “CR Offset Error Compensation” and the GPIB
related commands in the chapters of “Operation Overview”, “Local
Operation” and “Language Dictionary”.
– “Battery Discharge” and the GPIB related commands in the
chapters of “Local Operation” and “Language Dictionary”.
Modify the contents of “Voltage & Current Monitor” in the chapter of
“Operation Overview”.
2.1
Add “Material Contents Declaration”.
2.2
Delete GPIB cable from the section of “Inspection” in the chapter of
“Installation.”
Modify the contents of “Load Connections” in the chapter of
“Installation.”
Modify the figure of “Timer Function for Battery Discharge Testing” in
the chapter of “Operation Overview.”
2.3
Add Battery commands to the section of “Command Summary.”
Update the detail specifications and descriptions in the table of
“Specification” section.
2.4
Add the following:
–
“Parallel Setting” in the chapter of “Installation”
ix
–
“External LOAD ON/OFF Control” in the chapter of ”Operation
Overview”
–
“Troubleshooting” and “Precautions for Loading 63200 Battery”
two chapters
Update the following:
–
Detail specifications and descriptions in “Specification” section
–
Front and rear panel descriptions
–
Standard accessories
x
High Power DC Electronic Load 63200 Series Operation & Programming Manual
Table of Contents
1.
General Information ............................................................................................... 1-1
1.1
Introduction....................................................................................................... 1-1
1.2
Description........................................................................................................ 1-1
1.3
Overview of Key Features ................................................................................ 1-2
1.4
Specifications ................................................................................................... 1-2
1.5
Dimension Outline for 63200 Series ............................................................... 1-11
2.
Installation .............................................................................................................. 2-1
2.1
Introduction....................................................................................................... 2-1
2.2
Inspection ......................................................................................................... 2-1
2.3
Installing ........................................................................................................... 2-1
2.3.1
Changing Line Voltage ............................................................................. 2-2
2.3.2
Turn-On Self-Test ..................................................................................... 2-2
2.4
Application Connection..................................................................................... 2-3
2.4.1
Load Connections..................................................................................... 2-3
2.4.2
Remote Sensing Connections .................................................................. 2-5
2.4.3
Parallel Connections................................................................................. 2-5
2.4.4
RS-485 Parallel Connection Diagram....................................................... 2-6
2.4.5
Parallel Setting.......................................................................................... 2-7
2.5
Remote Control Connection ........................................................................... 2-10
3.
Operation Overview ............................................................................................... 3-1
3.1
Introduction....................................................................................................... 3-1
3.2
Front Panel Description .................................................................................... 3-1
3.3
Rear Panel Description..................................................................................... 3-1
3.4
Local/Remote Control ....................................................................................... 3-3
3.5
Modes of Operation .......................................................................................... 3-4
3.5.1
Constant Current Mode ............................................................................ 3-4
3.5.2
Constant Resistance Mode....................................................................... 3-6
3.5.3
Constant Voltage Mode ............................................................................ 3-7
3.5.4
Constant Power Mode .............................................................................. 3-7
3.5.5
Load Surge Capability .............................................................................. 3-8
3.5.6
Timer Function for Battery Discharge Testing .......................................... 3-9
3.6
Measurements ................................................................................................ 3-10
3.7
Slew Rate & Minimum Transient Time ........................................................... 3-10
3.8
Start/Stop Current Loading ............................................................................. 3-11
3.9
Short On/Off ................................................................................................... 3-12
3.10 Load On/Off .................................................................................................... 3-13
3.11 Protection Features ........................................................................................ 3-13
3.12 Save/Recall Setting ........................................................................................ 3-14
3.13 Program .......................................................................................................... 3-15
3.14 External Waveform Control............................................................................. 3-15
3.15 Voltage & Current Monitor .............................................................................. 3-15
3.16 Von Protection ................................................................................................ 3-15
3.17 CR Offset Error Compensation....................................................................... 3-18
3.18 External LOAD ON/OFF Control..................................................................... 3-18
4.
Local Operation ...................................................................................................... 4-1
4.1
Introduction....................................................................................................... 4-1
4.2
Local Operation ................................................................................................ 4-1
4.2.1
Setting the Operation Mode...................................................................... 4-3
4.2.2
Setting the Program.................................................................................. 4-9
4.2.3
Running the Program.............................................................................. 4-11
xi
High Power DC Electronic Load 63200 Series Operation & Programming Manual
4.2.4
4.2.5
4.2.6
4.2.7
4.2.8
4.2.9
4.2.10
Setting the Specification ......................................................................... 4-12
Setting the Configuration ........................................................................ 4-12
Recalling Files ........................................................................................ 4-16
Saving File/Default/Program................................................................... 4-17
Going To Local ....................................................................................... 4-17
Setting System and RS-232C Connection.............................................. 4-17
Online Change Level .............................................................................. 4-18
5.
Basic Information for Programming ..................................................................... 5-1
5.1
Introduction....................................................................................................... 5-1
5.1.1
Setting the GPIB Address and RS-232C Parameters............................... 5-1
5.1.2
Wire Connection of RS-232C ................................................................... 5-1
5.2
GPIB Capability of the Electronic Load ............................................................ 5-2
5.3
RS-232C in Remote Control ............................................................................. 5-3
6.
Introduction to Programming................................................................................ 6-1
6.1
Basic Definition................................................................................................. 6-1
6.2
Numerical Data Formats................................................................................... 6-2
6.3
Character Data Formats ................................................................................... 6-2
6.4
Separators and Terminators ............................................................................. 6-3
7.
Language Dictionary .............................................................................................. 7-1
7.1.1
Common Commands ................................................................................ 7-1
7.1.2
Common Command Dictionary................................................................. 7-1
7.2
Specific Commands.......................................................................................... 7-4
7.2.1
CONFigure Sub-system............................................................................ 7-5
7.2.2
COMMunicate Sub-system ....................................................................... 7-9
7.2.3
CURRENT Sub-system .......................................................................... 7-11
7.2.4
FETCh Sub-system ................................................................................ 7-14
7.2.5
LOAD Sub-system .................................................................................. 7-15
7.2.6
MEASure Sub-system ............................................................................ 7-17
7.2.7
MODE Sub-system ................................................................................. 7-19
7.2.8
POWer Sub-system ................................................................................ 7-20
7.2.9
PROGram Sub-system ........................................................................... 7-21
7.2.10
RESistance Sub-system ......................................................................... 7-24
7.2.11
SPECification Sub-system...................................................................... 7-25
7.2.12
STATus Sub-system............................................................................... 7-27
7.2.13
VOLTage Sub-system ............................................................................ 7-29
7.2.14
SYSTem Sub-system ............................................................................. 7-31
8.
Status Reporting..................................................................................................... 8-1
8.1
Introduction....................................................................................................... 8-1
8.2
Register Information in Common ...................................................................... 8-1
8.3
Questionable Status ......................................................................................... 8-2
8.4
Output Queue ................................................................................................... 8-3
8.5
Standard Event Status...................................................................................... 8-4
8.6
Status Byte Register ......................................................................................... 8-4
8.7
Service Request Enable Register..................................................................... 8-5
9.
Command Index ..................................................................................................... 9-1
9.1
Command Summary......................................................................................... 9-1
9.2
Parallel Operation............................................................................................. 9-4
10.
Troubleshooting ............................................................................................... 10-1
10.1 Overview......................................................................................................... 10-1
10.2 Troubleshooting.............................................................................................. 10-1
xii
High Power DC Electronic Load 63200 Series Operation & Programming Manual
11.
Precautions for Loading 63200 Battery.......................................................... 11-1
11.1 Measures for Improvement............................................................................. 11-3
11.1.1
Additional Protection Switch ................................................................... 11-3
11.1.2
Operation ................................................................................................ 11-3
xiii
General Information
1.
1.1
General Information
Introduction
This manual contains specifications, installation, operation, and programming instructions of
63200 series high power electronic loads. All the machines are tested according to safety
standard EN61010-1: TYPE POLLUTION II and INSTALLTION CATEGORY II.
1.2 Description
The functions of the 63200 series loads are the same except the variations on input voltage,
load current, and power ratings. They can be operated independently in constant current
(CC) mode, constant resistance (CR) mode, constant voltage (CV) mode or constant power
(CP) mode.
5.2KW
DC ELECTRONIC LOAD
VOLTS
MODEL
63203 60A/600A 16V/80V 4KW
AMPS
WATTS/OHMS
CC
CR
CURSOR
EDIT
CV
CP
Figure 1-1
GO/NG
7
8
4
5
6
1
2
3
0
.
9
Front Panel of the Electronic Load
There are three groups of keypads on the electronic load front panel shown in Figure 1-1.
They are System keypad, Function keypad and Entry keypad from left to right.
1-1
High Power DC Electronic Load 63200 Series Operation & Programming Manual
1.3
Overview of Key Features
Local operation on front panel keypad.
Remote control via GPIB, RS-232C interface or remote controller (optional).
Photo-couple isolation supplies true floating Load.
Automatic fan speed control to reduce audio noise.
Constant current (CC), constant resistance (CR), constant voltage (CV) and constant
power (CP) operation modes.
Programmable slew rate, load level, load period and conduct voltage (Von).
Programmable dynamic loading with speed up to 20kHz.
Minimum input resistance allows load to sink high current even with low input voltage.
Selective voltage and current ranges.
Remote sensing capability.
100 sets of memories to save/recall user-definable setups.
10 sets of programs to link files for automatic test.
15-bit A/D converter with precision measurement.
Short circuit simulation.
Automatic GO/NG inspection to confirm UUT within spec.
Isolated voltage and current monitoring waveforms output.
Isolated external Vdc reference input to control the load current.
1.4
Specifications
AC input:
Fuse:
Amplitude:
Frequency:
Maximum VA:
Note *
115/230 interchangeable Vac line
3.15A, 250V *
±10%
47 to 63 Hz
Please refer to the detail specifications listed below
The fuses in 63201, 63202 are specified as 2A, 250V. The fuses in 63203,
63204, 63205, 63208, 63209 and 63210 are specified as 2.5A, 250V.
1. The equipment is for indoor use only.
2. The altitude up to 2000 meters is allowed to use the equipment.
3. All specifications are tested under 20°C ∼ 30°C except stated
otherwise.
4. The range for operation temperature is 0°C ∼ 40°C.
5. The relative humidity is from 10% to 90%.
6. The specifications of DC current accuracy are tested after the input
is applied for 30 seconds.
7. The typical temperature coefficient is 100ppm.
CAUTION
1-2
This equipment is not intended for performing measurements on CAT I,
II, III or IV.
CAT IV – is for measurements performed at the source of the
low-voltage installation.
CAT III – is for measurements performed in the building installation.
CAT II – is for measurements performed on circuits directly connected to
the low-voltage installation.
CAT I – is for measurements performed on circuits directly connected to
mains.
General Information
SPECIFICATIONS
Model
Power*1
Current
Voltage
Min. operating voltage
Constant Current mode
Range
Resolution
Accuracy
Constant Resistance mode
Range
Resolution*6
Accuracy*2
Accuracy*3 (Vin>7V)
Constant Voltage mode
Range
Resolution
Accuracy
Constant Power mode
Range
Resolution
Accuracy
Timing
T1&T2
Resolution
Accuracy
Slew rate
Resolution
Min. Rise Time
Current
Range
Resolution
Accuracy
63201
260W
0-30A
63202
2600W
0-300A
0.5V @ 15A
1V @ 30A
260W
0-5A
0-80V
0.5V @ 150A
1V @ 300A
63203
2600W
0-50A
0-500V
1.25V @ 2.5A
1.25V @ 25A
2.5V @ 5A
2.5V @ 50A
520W
0-60A
5200W
0-600A
0-80V
0.5V @ 30A
0.5V @ 300A
1V @ 60A
1V @ 600A
0-30A
7.5mA
0.1%+0.1%FS
0-300A
75mA
0.2%+0.1%FS
0-5A
1.25mA
0.1%+0.1%FS
0-50A
12.5mA
0.2%+0.1%FS
0.005-20Ω
52mS
0.104S+0.35%
0.104S+0.35%
0.25-1000Ω
1.04mS
0.9S+0.1%
0.0021S+0.35%
0.25-1000Ω
1.2mS
0.0023S+0.35%
0.0023S+0.35%
10-40000Ω
0.0025-10Ω
0.125-500Ω
28.8µS
104mS
2.1mS
0.04S+0.1% 0.208S+0.35% *4
1.2S+0.1%
57.56µS+0.35% 0.208S+0.35% 0.0042S+0.35%
1-16V
4mV
0.05%+0.1%FS
1-80V
20mV
0.05%+0.1%FS
2.5-125V
31mV
0.05%+0.1%FS
2.5-500V
125mV
0.05%+0.1%FS
1-16V
4mV
0.05%+0.1%FS
1-80V
20mV
0.05%+0.1%FS
0.6-260W
7.5mW
0.5%+0.5%FS
6-2600W
0.625-260W
75mW
3.125mW
0.5%+0.5%FS
0.5%+0.5%FS
Dynamic mode
6.25-2600W
31.25mW
0.5%+0.5%FS
1.2-520W
22.5mW
0.5%+0.5%FS
12-5200W
225mW
0.5%+0.5%FS
0.025-10ms
1ms-30s
1µs
1ms
1µs+100ppm
1ms+100ppm
5mA-1.25A/µs 50mA-12.5A/µs
5mA/µs
50mA/us
24µs (Typical)
0-30A
7.5mA
0-300A
75mA
0.025-10ms
1ms-30s
1µs
1ms
1µs+100ppm
1ms+100ppm
0.8mA-0.2A/µs
8mA-2A/µs
0.8mA/us
8mA/us
24µs (Typical)
0-5A
1.25mA
0.4%FS
0-50A
12.5mA
0-60A
15mA
0.1%+0.1%FS
0-600A
150mA
0.2%+0.1%FS
0.025-10ms
1ms-30s
1µs
1ms
1µs+100ppm
1ms+100ppm
10mA-2.5A/µs 100mA-25A/µs
10mA/us
100mA/us
24µs (Typical)
0-60A
15mA
0-600A
150mA
0.4%FS
0.4%FS
0-16V
0-80V
0.5mV
2.4mV
0.05%+0.05%FS
0-125V
0-500V
3.5mV
13.7mV
0.05%+0.05%FS
0-16V
0-80V
0.5mV
2.4mV
0.05%+0.05%FS
0-30A
0-300A
0.9mA
8.5mA
0.1%+0.1%FS
0-5A
0-50A
0.2mA
1.4mA
0.1%+0.1%FS
0-60A
0-600A
1.7mA
17mA
0.1%+0.1%FS
0-260W
0-2600W
0.3%+0.3%FS
0-260W
0-2600W
0.3%+0.3%FS
0-520W
0-5200W
0.3%+0.3%FS
Measurement
Voltage read back
Range
Resolution
Accuracy
Current read back
Range
Resolution
Accuracy
Power read back
Range
Accuracy*5
1-3
High Power DC Electronic Load 63200 Series Operation & Programming Manual
General
Short circuit
Current
30A
300A
177 × 440 × 589.4 mm /
Dimension (H × W × D)
6.96 × 17.32 × 23.2 inch
Weight
30 kg / 66.13 lbs
Max. Power Consumption
150VA
EMC & Safety
CE
*Specifications are subject to change without notice.
5A
50A
177 × 440 × 589.4 mm /
6.96 × 17.32 × 23.2 inch
30 kg / 66.13 lbs
150VA
CE
60A
600A
353 × 440 × 589.4 mm /
13.89 × 17.32 × 23.2 inch
62 kg / 136.68 lbs
150VA
CE
1. The power rating specifications at ambient temperature = 25°C and see the diagram below for power derating.
Power Rating
100%
77%
°C
Ambient Temperature
10°C
20°C
30°C
40°C
2. The Vin must be greater than min. operating voltage of each model.
3. The Vin must be greater than 7V of each model.
All CR mode accuracy should be referring to the CC mode accuracy.
4. Setting error will be 1% for R < 0.005Ω CRL range.
5. Power F.S. = Vrange F.S. × Irang F.S.
6. S (siemens) is the SI unit of conductance, equal to one reciprocal ohm(Ω).
7. If the operating voltage exceeds the rated voltage for 1.1 times, it would cause permanent damage to the device.
1-4
General Information
Model
Power*1
Current
Voltage
Min. operating voltage
Constant Current mode
Range
Resolution
Accuracy
Constant Resistance mode
Range
Resolution*6
Accuracy*2
Accuracy*3 (Vin>7V)
Constant Voltage mode
Range
Resolution
Accuracy
Constant Power mode
Range
Resolution
Accuracy
Timing
T1&T2
Resolution
Accuracy
Slew rate
Resolution
Min. Rise Time
Current
Range
Resolution
Accuracy
63204
520W
0-10A
63205
5200W
0-100A
650W
0-18A
0-500V*8
1.25V @ 5A
1.25V @ 50A
2.5V @ 10A
2.5V @ 100A
0-10A
2.8mA
0.1%+0.1%FS
0-100A
28mA
0.2%+0.1%FS
0.125-500Ω
5-20000Ω
2.3mS
57.56µS
0.0046S+0.35% 0.08S+0.1%
0.0046S+0.35% 115.51µS+0.35%
63206
6500W
0-180A
0.5V @ 9A
1V @ 18A
0-80V
0.5V @ 90A
1V @ 180A
0-18A
5.2mA
0.1%+0.2%FS
0.008-32Ω
35mS
0.07S+0.35%
0.07S+0.35%
0-180A
52mA
0.1%+0.2%FS
1040W
0-60A
10400W
0-600A
0-80V
0.5V @ 30A
0.5V @ 300A
1V @ 60A
1V @ 600A
0-60A
21mA
0.1%+0.2%FS
0-600A
170mA
0.1%+0.2%FS
0.4-1600Ω
0.0025-10Ω
0.125-500Ω
0.7mS
112.5mS
2.25mS
0.75S+0.1% 0.225S+0.35%*4
1.2S+0.1%
0.0014S+0.35% 0.225S+0.35% 0.0045S+0.35%
2.5-125V
2.5-500V
1-16V
1-80V
31mV
125mV
4mV
20mV
0.05%+0.1%FS 0.05%+0.1%FS 0.05%+0.1%FS 0.05%+0.1%FS
1-16V
1-80V
4mV
20mV
0.05%+0.1%FS 0.05%+0.1%FS
1.25-520W
6.25mW
0.5%+0.5%FS
1.2-1040W
22.5mW
0.5%+0.5%FS
12.5-5200W
0.36-650W
62.5mW
4.6mW
0.5%+0.5%FS 0.5%+0.5%FS
Dynamic mode
0.025-10ms
1ms-30s
1µs
1ms
1µs+100ppm
1ms+100ppm
1.6mA-0.4A/µs 16mA-4A/µs
1.6mA/µs
16mA/µs
24µs (Typical)
0-10A
2.8mA
0-100A
28mA
3.6-6500W
46mW
0.5%+0.5%FS
0.025-10ms
1ms-30s
1µs
1ms
1µs+100ppm
1ms+100ppm
3mA-0.75A/µs 30mA-7.5A/µs
3mA/µs
30mA/µs
24µs (Typical)
0-18A
5.2mA
0.4%FS
0-180A
52mA
12-10400W
225mW
0.5%+0.5%FS
0.025-10ms
1ms-30s
1µs
1ms
1µs+100ppm
1ms+100ppm
12mA-3A/µs
100mA-25A/µs
12mA/µs
100mA/µs
20µs (Typical)
0-60A
21mA
0-600A
170mA
0.4%FS
0.4%FS
0-125V
0-500V
5mV
17.1mV
0.05%+0.05%FS
0-16V
0-80V
0.6mV
2.6mV
0.05%+0.05%FS
0-16V
0-80V
0.6mV
2.6mV
0.05%+0.05%FS
0-10A
0-100A
0.35mA
3.5mA
0.1%+0.1%FS
0-18A
0-180A
0.7mA
7mA
0.1%+0.1%FS
0-60A
0-600A
2.6mA
21mA
0.1%+0.1%FS
0-520W
0-5200W
0.3%+0.3%FS
0-650W
0-6500W
0.3%+0.3%FS
0-1040W
0-10400W
0.3%+0.3%FS
Measurement
Voltage read back
Range
Resolution
Accuracy
Current read back
Range
Resolution
Accuracy
Power read back
Range
Accuracy*5
1-5
High Power DC Electronic Load 63200 Series Operation & Programming Manual
General
Short circuit
Current
10A
100A
353 × 440 × 589.4 mm /
Dimension (H × W × D)
13.89 × 17.32 × 23.2 inch
Weight
62 kg / 136.68 lbs
Max. Power Consumption
150VA
EMC & Safety
CE
*Specifications are subject to change without notice.
18A
180A
310 × 440 × 589.4 mm /
12.2 × 17.32 × 23.2 inch
62 kg / 136.68 lbs
200VA
CE
60A
600A
443.7 × 440 × 589.4 mm /
17.46 × 17.32 × 23.2 inch
90 kg / 198.41 lbs
250VA
CE
1. The power rating specifications at ambient temperature = 25°C and see the diagram below for power derating.
Power Rating
100%
77%
°C
Ambient Temperature
10°C
20°C
30°C
40°C
2. The Vin must be greater than min. operating voltage of each model.
3. The Vin must be greater than 7V of each model.
All CR mode accuracy should be referring to the CC mode accuracy.
4. Setting error will be 1% for R < 0.005Ω CRL range.
5. Power F.S. = Vrange F.S. × Irang F.S.
6. S (siemens) is the SI unit of conductance, equal to one reciprocal ohm(Ω).
7. If the operating voltage exceeds the rated voltage for 1.1 times, it would cause permanent damage to the device.
8. 600V modification available.
1-6
General Information
Model
Power*1
Current
Voltage
Min. operating voltage
63207
1040W
0-30A
63208
10400W
0-300A
0-80V
0.5V @ 15A 0.5V @ 150A
1V @ 30A
1V @ 300A
1560W
0-60A
63209
15600W
0-600A
0-80V
0.5V @ 30A
0.5V @ 300A
1V @ 60A
1V @ 600A
Constant Current mode
Range
0-30A
0-300A
0-60A
0-600A
Resolution*6
10.3mA
82mA
21mA
163mA
Accuracy
0.1%+0.2%FS 0.1%+0.2%FS 0.1%+0.2%FS
0.1%+0.2%FS
Constant Resistance mode
Range
0.005-20Ω
0.25-1000Ω
0.0025-10Ω
0.125-500Ω
Resolution
55.7mS
1.1mS
110mS
2.22mS
Accuracy*2
0.111S+0.35% 0.9S+0.1%
0.22S+0.35%*4
1.2S+0.1%
Accuracy*3 (Vin>7V) 0.111S+0.35% 0.0022S+0.35% 0.22S+0.35%
0.0044S+0.35%
Constant Voltage mode
Range
1-16V
1-80V
1-16V
1-80V
Resolution
4mV
20mV
4mV
20mV
Accuracy
0.05%+0.1%FS 0.05%+0.1%FS 0.05%+0.1%FS 0.05%+0.1%FS
Constant Power mode
Range
0.744-1040W
6-10400W
1.2-1560W
12-15600W
Resolution
9.3mW
75mW
22.5mW
225mW
Accuracy
0.5%+0.5%FS 0.5%+0.5%FS 0.5%+0.5%FS
0.5%+0.5%FS
Dynamic mode
Timing
T1&T2
0.025-10ms
1ms-30s
0.025-10ms
1ms-30s
Resolution
1µs
1ms
1µs
1ms
Accuracy
1µs+100ppm 1ms+100ppm
1µs+100ppm
1ms+100ppm
Slew rate
6mA-1.5A/µs 50mA-12.5A/µs
12mA-3A/µs
100mA-25A/µs
Resolution
6mA/µs
50mA/µs
12mA/µs
100mA/µs
Min. Rise Time
20µs (Typical)
20µs (Typical)
Current
Range
0-30A
0-300A
0-60A
0-600A
Resolution
10.3mA
82mA
21mA
163mA
Accuracy
0.4%FS
0.4%FS
Measurement
Voltage read back
Range
0-16V
0-80V
0-16V
0-80V
Resolution
0.6mV
2.6mV
0.6mV
2.6mV
Accuracy
0.05%+0.05%FS
0.05%+0.05%FS
Current read back
Range
0-30A
0-300A
0-60A
0-600A
Resolution
1.3mA
11mA
2.7mA
21mA
Accuracy
0.1%+0.1%FS
0.1%+0.1%FS
Power read back
Range
0-1040W
0-10400W
0-1560W
0-15600W
Accuracy*5
0.3%+0.3%FS
0.3%+0.3%FS
1560W
0-100A
15600W
0-1000A
0-80V
0.5V @ 50A
1V @ 100A
0.5V @ 500A
1V @ 1000A
0-100A
34.2mA
0.1%+0.2%FS
0-1000A
274mA
0.1%+0.2%FS
0.0015-6Ω
186.5mS
0.373S+0.35%*4
0.373S+0.35%
0.075-300Ω
3.73mS
1.2S+0.1%
0.0075S+0.35%
1-16V
4mV
0.05%+0.1%FS
1-80V
20mV
0.05%+0.1%FS
2.5-1560W
31.255mW
0.5%+0.5%FS
20-15600W
250mW
0.5%+0.5%FS
0.025-10ms
1ms-30s
1µs
1ms
1µs+100ppm
1ms+100ppm
20mA-5A/µs
166mA-41.6A/µs
20mA/µs
166mA/µs
20µs (Typical)
0-100A
34.2mA
0-1000A
274mA
0.4%FS
0-16V
0-80V
0.6mV
2.6mV
0.05%+0.05%FS
0-100A
0-1000A
4.5mA
36mA
0.1%+0.1%FS
0-1560W
0-15600W
0.3%+0.3%FS
1-7
High Power DC Electronic Load 63200 Series Operation & Programming Manual
General
Short circuit
Current
30A
300A
443.7 × 440 × 589.4 mm /
Dimension (H × W × D)
17.46 × 17.32 × 23.2 inch
Weight
90 kg / 198.41 lbs
Max. Power Consumption
250VA
EMC & Safety
CE
*Specifications are subject to change without notice.
60A
600A
762.8 × 546 × 700 mm /
30.03 × 21.49 × 27.55 inch
170 kg / 374.78 lbs
250VA
CE
100A
1000A
762.8 × 546 × 700 mm /
30.03 × 21.49 × 27.55 inch(cabinet)
170 kg / 374.78 lbs
250VA
CE
1. The power rating specifications at ambient temperature = 25°C and see the diagram below for power derating.
Power Rating
100%
77%
°C
Ambient Temperature
10°C
20°C
30°C
40°C
2. The Vin must be greater than min. operating voltage of each model.
3. The Vin must be greater than 7V of each model.
All CR mode accuracy should be referring to the CC mode accuracy.
4. Setting error will be 1% for R < 0.005Ω CRL range.
5. Power F.S. = Vrange F.S. × Irang F.S.
6. S (siemens) is the SI unit of conductance, equal to one reciprocal ohm(Ω).
7. If the operating voltage exceeds the rated voltage for 1.1 times, it would cause permanent damage to the device.
1-8
General Information
Model
Power*1
Current
Voltage
Min. operating voltage*8
Constant Current mode
Range
Resolution
Accuracy
Constant Resistance mode
Range
Resolution*7
Accuracy*2
Accuracy*3 (Vin>10V)
Min. operating current
Constant Voltage mode
Range
Resolution
Accuracy
Constant Power mode
Range
Resolution
Accuracy
Timing
T1&T2
Resolution
Accuracy
Slew rate*9
Resolution
Min. Rise Time
Min. Operating Voltage
@ Dynamic mode
Current
Range
Resolution
Accuracy
63210
1450W
0-15A
14500W
0-150A
0-600V
1.5V @ 7.5A
3V @ 15A
1.5V @ 75A
3V @ 150A
0-15A
4.9mA
0.1%+0.1%FS
0-150A
39mA
0.2%+0.1%FS
0.1-400Ω
3.21mS
0.0128S+0.35%
0.0128S+0.35%
1A
5-20000Ω
80.1µS
0.092S+0.1%
317.7μS+0.35%
1A
3V-150V
40mV
0.05%+0.1%FS
3V-600V
162mV
0.05%+0.1%FS
5-1450W
25mW
0.5%+0.5%FS
Dynamic mode
50-14500W
250mW
0.5%+0.5%FS
0.025-10ms
1µs
1µs+100ppm
3mA-0.75A/µs
3mA/µs
1ms-30s
1ms
1ms+100ppm
25mA-6A/µs
25mA/µs
150μs (Typical)
3V
0-15A
4.9mA
0-150A
39mA
0.4%FS
Measurement
Voltage read back
Range
Resolution
Accuracy
Current read back
Range
Resolution
Accuracy
Power read back
Range
Accuracy*5
0-150V
5.1mV
0-600V
21mV
0.05%+0.05%FS
0-15A
0.64mA
0-150A
5.1mA
0.1%+0.1%FS
0-1450W
0-14500W
0.3%+0.3%FS
1-9
High Power DC Electronic Load 63200 Series Operation & Programming Manual
General
Short circuit
Current
15A
150A
762.8 × 546 × 700 mm /
Dimension (H × W × D)
30.03 × 21.49 × 27.55 inch(cabinet)
Weight
170 kg / 374.78 lbs
Max. Power Consumption
250VA
EMC & Safety
CE
*Specifications are subject to change without notice.
1. The power rating specifications at ambient temperature = 25°C and see the diagram below
for power derating.
Power Rating
100%
77%
°C
Ambient Temperature
10°C
20°C
30°C
40°C
2. For Vin greater than min. operating voltage and less than 10V.
3. For Vin greater than 10V.
4. Setting error will be 1% for R < 0.005Ω at CRL range.
5. Power F.S. = Vrange F.S. × Irange F.S.
6. If the operating voltage exceeds the rated voltage for 1.1 times, it would cause permanent
damage to the device.
7. S (Siemens) is the SI unit of conductance, equal to one reciprocal ohm(Ω).
8. To ensure full load current at CCH and CCL mode under low operating voltage, please set
the voltage measurement range as low range.
9. The minimum rise time of CC dynamic is 150μs for 600V 63210. If the minimum rise time
is shorter than 150μs, the current overshoot will be over 5% of full scale current.
1-10
General Information
1.5
Dimension Outline for 63200 Series
z Model 63201 and 63202
z Model 63203 and 63204
1-11
High Power DC Electronic Load 63200 Series Operation & Programming Manual
z Model 63205
z Model 63206 and 63207
1-12
General Information
z Model 63208 and 63209 and 63210
(Top View)
Top Side
Common Difference ± 2.0 mm
Unit: mm
Rack mount note for model 63207:
Notices for Rack Mount Installation
1 The four wheels must be removed.
2 The supporter must be removed.
3 Use the original banner screws to secure the rack
frame.
4 For safety, place it at the bottom of the rack.
1-13
High Power DC Electronic Load 63200 Series Operation & Programming Manual
Installing the 63200 Protective Cover:
Step 1: Insert the cable into protective cover.
Step 2: Socket the Bakelite into the positive/negative copper plate until it touches the
chassis and then secure the M6x20L screw and M6 screw nut to block the
Bakelite.
Step 3: Place a washer on the M6x20L screw and let it go through the positive/negative
copper plate. Connect the two cables with an insulator to secure the cables on
the positive/negative copper plate.
Step 4: Cover the positive/negative copper plate with protective cover on the rear panel.
Step 5: Use the attached M6x10L screw to secure the protective cover.
Step 6: Complete installation.
1-14
Installation
2.
Installation
2.1
Introduction
This chapter describes how to install the 63200 series Load as well as a turn-on check
procedure and application considerations.
2.2
Inspection
As soon as the instrument is unpacked, inspect any damage that might have occurred in
shipping. Keep all packing materials in case that the instrument has to be returned. If any
damage is found, please file a claim to the carrier immediately. Do not return the instrument
to Chroma without prior approval.
In addition to this manual, be sure that the following items are also received – a power cord,
this manual, a pair of load terminal screws kit and a V-sense cable.
Please ensure the following items are received correctly.
Model
63201
63202
63203
63204
63205
63206
63207
Item Name
Operation Manual (CD)
Power Cord
Electronic Load Terminal Screw Kit
V-sense Cable (red and black one for each)
RS-485 Parallel Cable
Ear Rack
Handle
Qty
1 copy
1 pc.
1 set
2 pc.
1 pc.
2 pcs.
2 pcs.
Model
Item Name
Operation Manual (CD)
Power Cord
Electronic Load Terminal Screw Kit
V-sense Cable (red and black one for each)
RS-485 Parallel Cable
Qty
1 copy
1 pc.
1 set
2 pc.
1 pc.
63208
2.3
Installing
The Electric Loads can operate well within the temperature range from 0 ºC to 40 ºC.
However, you must install the Electric Load in an area that has enough space around the unit
for adequate air flowing through and escaping from the back.
2-1
High Power DC Electronic Load 63200 Series Operation & Programming Manual
2.3.1 Changing Line Voltage
The Electronic Load can operate with a 115/230 Vac input as indicated on the left hand side
of the unit (facing the unit). If the factory set voltage does not correspond to your nominal
line voltage, set the switch to the correct line voltage as shown in Figure 2-1 before plugging
in the power cord and turning on the power.
Line fuses do not need to be changed when the line voltage is changed.
The line fuses will protect the Electronic Load for incorrect voltage
setting.
Figure 2-1
2.3.2
Line Voltage Switch
Turn-On Self-Test
Check the following before turning on the Load.
1.
2.
The unit has been set to the correct line voltage by factory.
indicated on the left hand side of the panel.
The power cord is connected to the AC input socket.
WARNING
Refer to the line voltage
The power supplies a chassis ground through a third connector. Be
sure that your outlet is of three-conductor type with the correct pin
connected to ground.
Turn on the Load by the power switch on the front panel and observe the display.
Immediately after turning on, the Electronic Load executes a self-test to check the RS-232C,
GPIB interface board and the system.
The LCD displays
FRONT PANEL TESTING
[ RS232 ]
PASS
FRONT PANEL TESTING
CHECKSUM
PASS
GPIB ADDRESS
2-2
X
Installation
CHROMA ATE INC.
MODEL 632XX
and then it goes to the output mode setting display.
All of the 7-segment LEDs which display the measuring V, I, P (or R) will be activated when
the self-test completes. If any error is found in self-test, the display will stop here.
In case of failure, return the Load to Chroma sales or service office for repair.
2.4
Application Connection
2.4.1 Load Connections
WARNING
To satisfy safety requirements, load wires must be heavy enough not to
overheat while carrying the short-circuit output current of the device
connected to the Electronic Load.
Input connections are made to the + and − terminal block on the rear of the Load. The
major considerations in making input connections are the wire size, length and polarity. The
minimum wire size required to avoid overheating may not be enough to maintain good
regulation. The wires should be large enough to limit the voltage drop to less than 0.5V per
lead. The wires should be as short as possible, and bundled or tied together to minimize
inductance and noise. Connect the wire from the PLUS (+) terminal to the HIGH potential
output terminal of the power supply (UUT). Connect the wire from the MINUS (−) terminal to
the LOW potential output terminal of the power supply (UUT). Figure 2-2 illustrates the
typical setup of the Load to the UUT. When using Model 63208, 63209 and 63210 the
distance should be 1 meter for chassis front and 2.5 meters for rear without any foreign
object blocking the vents or the hardware temperature may rise and cause OTP.
2-3
High Power DC Electronic Load 63200 Series Operation & Programming Manual
+
UUT_
Figure 2-2
WARNING
Load & Remote Sensing Connection
In case the MOSFETs in the electronic load fail in the short circuit
status, there is no internal means of interrupting the current that is
flowing from the Unit Under Test (UUT). User should consider added
external circuit elements for protection as described below. MOSFET
failures are rare when instruments are used within their rated
voltage/current/power and temperature ranges.
Recommended safety precautions:
Ensure wiring, external circuit elements, etc are sized to the maximum rating of the LOAD
even if intended UUTs are smaller. This provides protection in the event that users
inadvertently apply full rated voltage, current or power or larger UUTs are tested in the future.
User should take into account the power dissipated in the output cable under worse case
conditions to ensure the wire the gauge and cooling is adequate.
2-4
Installation
Ensure the load always receives adequate ambient cooling air at all times and air filters,
ducks, etc are maintained regularly. If loads are used with a cabinet, precautions should be
taken to minimize heating within the cabinet.
If the UUT may be damaged or an unsafe condition may occur in the event of a load short
circuit (e.g. certain types of batteries), or if there is no means of de-energizing the UUT in the
event of a load failure, user may consider including a suitably rated circuit breaker, fuse or
other means of disconnecting the load from the UUT under emergency conditions.
Note
If there are any questions regarding safe operation of the equipment or adding
external protection circuits, please contact Chroma’s service personnel.
2.4.2 Remote Sensing Connections
There are two sensing points for the Electronic Load.
One is measurement at Load
terminal, and another is measurement at Vsense. The Load will automatically switch to
Vsense when Vsense terminals are connected to UUT, otherwise it will measure at Load
terminals. Remote sensing compensates for voltage drop in applications that require long
lead lengths. It is useful when the load is operating in CV or CR mode, or when it needs
precise measurement. Figure 2-2 also illustrates a typical setup for remote sensing
operation.
The potential of V-sense red connector must be higher than that of
V-sense black connector.
2.4.3 Parallel Connections
63200 series Loads can be paralleled to increase power dissipation. The Loads can be
directly paralleled in CC mode for static or dynamic operation while in CR and CP modes the
Loads can be paralleled for static operation only. It is not suggested to parallel Loads in CV
mode.
The Loads is linked via RS-485 cable to RS485 port (see 2.4.4 RS-485 Parallel Connection
Diagram). RS485 address represents the ID of each Load in the parallel group as the figure
shown below. It enables the MASTER controller to connect to the Slave models correctly
via the settings of RS485 ADDRESS and control the parallel load. There is only one Master
in the parallel group, the rest are slaves. For 63200 Series, it can parallel up to 6 models and
these Electronic Loads can be operated simultaneously via Master in static or dynamic
mode.
RS485
ADDRESS
3
There are two operation modes in this parallel function:
The first is MASTER mode. The master gets the total setting commands from the remote
control or front panel and then informs the slaves what setting current they should do
according to their model. (The slave model has to be ready first.) So the only one needs to
programmed is the master.
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High Power DC Electronic Load 63200 Series Operation & Programming Manual
The second is MASTER SYNC mode. Each Load gets the current setting from its own
remote control or front panel, the master controls the loads H/W synchronization action so
that all loads can be operated with same action at the same time no matter in static or
dynamic mode.
2.4.4 RS-485 Parallel Connection Diagram
2.4.4.1 Pin Assignment
2-6
Installation
2.4.4.2 Master & Salve Connecting Diagram
2.4.5 Parallel Setting
Power on the Electronic Load and it will start self test to check the system as well as the
RS-232C and GPIB Interface. The LCD shows:
FRONT PANEL TESTING
[ RS232 ]
PASS
FRONT PANEL TESTING
CHECKSUM
PASS
GPIB ADDRESS
X
CHROMA ATE INC.
MODEL 632XX
Next, it will show the CC mode settings.
CCHA:
CCHB:
0.0000A
0.0000A
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High Power DC Electronic Load 63200 Series Operation & Programming Manual
Press SYS to set the RS485 address of Slave so that it can be followed when setting the
attribute of Master.
First it will prompt the default GPIB address.
GPIB
ADDRESS
X
Next, press ↓→ to RS485 ADDRESS setting mode. The setting of RS485 ADDRESS
maps to the slave number, for instance if RS485 ADDRESS = 2, the salve number is SLAVE
2. Press 1, ENTER to set the RS485 ADDRESS to 1.
RS485
ADDRESS
1
When the setting is done, it will show several RS-232 parameter setting modes (Note 2).
Press ↓→ to skip these modes until PARALLEL setting mode appears. (Note1):
PARALLEL =
PRESS 0 → 3
NONE
TO SELECT
Set the Electronic Load to slave and press 2, ENTER:
PARALLEL =
PRESS 0 → 3
SLAVE
TO SELECT
When the slave setting is done, it will prompt SYS setting automatically as shown below:
SLAVE1
OFFLINE
Set the Master as follows:
Connect the A port of RS485 cable to the selected Master.
CC mode settings.
CCHA:
CCHB:
The start screen is same as the
0.0000A
0.0000A
Press SYS to enter into system setting mode. Since the Master setting is not related to
RS485 ADDRESS, press ↓→ directly to go to PARALLEL setting screen.
PARALLEL =
PRESS 0 → 3
2-8
NONE
TO SELECT
Installation
Press 1, ENTER to select MASTER:
PARALLEL =
PRESS 0 → 3
MASTER
TO SELECT
It goes to Measurement Display screen:
MEASUREMENT DISPLAY
1:SUM
2:SOLE
Select 1 , ENTER: SUM, the total current is set and displayed by MASTER. The current
added to MASTER and SLAVE will divide evenly.
Select 2 , ENTER: It parallels the sole settings of each unit to show the added current.
When the above steps are done, it will go to Slave model selection screen:
SLAVE1 MODEL: NONE
PLS ROTATE TO SELECT
Switch the rotary knob on the panel following the slave no. (SLAVE1→6) until the screen
shows the correct model.
SLAVE1 MODEL: 63202
PLS ROTATE TO SELECT
Press ↓→ or ↑← to select other number to be paralleled for slave (SLAVE1→6) and repeat
the above setting steps. If the number does not parallel to other slave, press ENTER to
skip. NONE means does not exist. It ends when the setting is done. Select the mode to be
tested can exit the screen to start testing.
Note 1
PARALLEL:
PARALLEL =
PRESS 0 → 3
NONE
TO SELECT
Following are the selections of PARALLEL setting functions:
0: NONE: It disables the parallel mode function.
1: MASTER: It sets the Electronic Load as Master (main control unit.)
PARALLEL =
PRESS 0 → 3
MASTER
TO SELECT
When setting the Electronic Load as the main control unit in the parallel group,
only the front panel of Master or direct command from PC can control it. It not
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High Power DC Electronic Load 63200 Series Operation & Programming Manual
only can operate simultaneously but also can inform Slave the current for
loading.
2: SLAVE: It sets the Electronic Load to Slave.
SLAVE1
OFFLINE
3: MASTER SYN: It performs parallel synchronization only. All Master, Slave
loadings need to be inputted separately but the control
movement and usage mode will be determined by the front
panel on MASTER or PC input for synchronization.
PARALLEL =
PRESS 0 → 3
2.5
MST SYNC
TO SELECT
Remote Control Connection
The remote operation of Load can be done through GPIB, RS-232C or remote controller.
These connectors on the rear panel connect the Load to the controller or computer. The
GPIB interface of the electronic load is standard. The remote controller is optional. The
63200 series Remote Controller can control the load via RS-232C port. Connect the
Remote Controller to the Electronic Load before powering it on.
2-10
Operation Overview
3.
3.1
Operation Overview
Introduction
Chroma 63200 series electronic loads are suitable for design, manufacturing, testing and
quality assurance. It contains a processor, GPIB and RS-232C connectors, front panel
keypad, display, and power stage. Its built-in remote control function allows you to control,
read back current, voltage and status. The Save/Recall feature allows you to save up to
100 files, 10 programs, and one default setting. All of them can be saved in load EEPROM
for future use.
The load contains four cooling fans. The fan speed increases or decreases automatically
when the load power rises or falls. This feature reduces the overall noise level as the fans
do not always run at the maximum speed.
Each load can operate in constant current (CC), constant resistance (CR), constant voltage
(CV), and constant power (CP) modes. If the application is larger than one of DC load can
provide in power or current rating, the DC loads operation in parallel is a suggested way.
However, it can be applied in CC mode, CP mode and CR mode.
3.2
Front Panel Description
The front panel of the load includes a 20 × 2 characters LCD display, three segment LED, 9
led status indicators, and keypads. The LCD display will show which function is being
performed when you use the keypads. One of the keys has two functions. Figure 3-1
shows the front panel of the loads.
Figure 3-1
3.3
Front Panel
Rear Panel Description
The Mainframe rear panel includes ports of RS-232C, RS485, GPIB, two remote sense,
three BNC connectors, a pair of input terminals, an AC LINE socket, and a fuse holder.
Figure 3-2 and Figure 3-3 shows the rear panel of Mainframe 63200.
3-1
High Power DC Electronic Load 63200 Series Operation & Programming Manual
Figure 3-2
3-2
Rear Panel of 63201/63202/63203/63204
Operation Overview
Figure 3-3
3.4
Rear Panel of 63205/63206/63207/63208/63209/63210
Local/Remote Control
Local (front panel) control is in effect immediately after the power is applied. The front panel
keypad and display allow manual control when Load is used in bench test applications.
Remote control goes into effect as soon as the Load receives a command via GPIB,
RS-232C or remote controller. When the remote control is in effect, only the computer can
control the Load. The front panel keypad has no effect except the LOCAL key. You can
return to local control by pressing LOCAL key.
3-3
High Power DC Electronic Load 63200 Series Operation & Programming Manual
Most of the functions that perform remotely can be done locally too at the Load front panel.
Details of local operation are given in Chapter 4 Local Operation. Fundamentals of remote
programming are described in the latter part of this manual.
3.5
Modes of Operation
There are four modes of operation: Constant Current (CC), Constant Resistance (CR),
Constant Voltage (CV), and Constant Power (CP).
You can select the mode by pressing CC, CR, CV, or CP keys under the FUNCTION
keypad. The parameters in current, resistance, voltage or power mode can be programmed
easily when the mode is selected.
All data set in CC/CR/CV/CP mode will be rescaled to fit the resolution of current/voltage
levels or slew rate. In local mode any value can be set to the Load from the keypad.
There is no upper and lower limit that would cause an error. The Load automatically selects
data, which is rescaled from the programmed value, truncates and checks high, low
boundary before fitting it into the memory. When the programmed data is over the
boundary, the Load will set the maximum or minimum level for it. In remote mode the
programmed value cannot be over boundary. An error will occur when data is over the
maximum or minimum value.
3.5.1 Constant Current Mode
I
current setting
Load
Current
V
Input Voltage
Figure 3-4
Constant Current Mode
In CC mode, the Load will sink a current in accordance with the programmed value
regardless of the input voltage. The CC mode can be set by CC key in the front panel.
Press A/B key to select the current waveform in Static mode.
stability of output voltage from a power supply.
Static function checks the
Press DYNA key to select the current waveform in Dynamic mode. This key is only valid
under CC mode, and Dynamic function checks the transient response.
3-4
Operation Overview
Press RANGE key to select the current range suitable for your application no matter in static
or dynamic current mode. Low range can supply better current resolution
You can program two different static settings, A and B under all static CC, CR, CV, and CP
modes. Both A and B states use the same range. You can select A or B through the A/B
key. Slew rate determines the rate that Load level changes from one state to another.
Figure 3-5 shows the load current level after pressing A/B key.
CCLA: 4A,
CCLB:2A,
CCL
: 0.2A/μs,
CCL
: 0.08A/μs
Current
rise slew rate
fall slew rate
4A
State A
2A
State B
Time
10uS
25uS
press key "A/B"
Figure 3-5
Load Level after Pressing A/B Key
Dynamic load operation enables you to program two load levels (CCDL1, CCDL2), load
duration (CCDLT1, CCDLT2), and slew rate (CCDL
, CCDL
). The loading level is
switched between those two load levels according to your specific setting during operation.
The dynamic load is commonly used to test the UUT’s performance under transient loading
condition. Figure 3-6 shows current waveform of dynamic function.
CCDL1:4A, CCDL2:2A, CCDL
CCDLT1:10ms, CCDLT2:10ms
:1A/μs, CCDL
: 1A/μs,
Current
Load1
4A
load2
2A
10mS
T1
10mS
T2
Figure 3-6
10mS
T1
10mS
T2
Time
Dynamic Current Waveform
3-5
High Power DC Electronic Load 63200 Series Operation & Programming Manual
Slew Rate (Rise, Fall A/μs)
Slew rate determines the rate at which the current input of changes to a newly programmed
value. There are two slew rate values, which are rise rate and fall rate.
CC mode voltage specification setting
The Load can do GO/NG test by pressing the GO/NG key under loading condition. It will
check if the measured data is within the specification that set at the end of each mode setting.
We can select are two types of parameters, percent or value, under the configure setting.
This operation will be described in detail in section 4.2.4 Setting the Specification.
3.5.2 Constant Resistance Mode
V
Input
Voltage
Slope
(R setting)
I
Load Current
Figure 3-7
Constant Resistance Mode
In CR mode, the Load will sink a current linearly proportional to the input voltage in
accordance with the programmed resistance. There is a double pole RC filter of input
voltage, so high frequency parts will be removed. The load sink current of CR mode is
proportioned to the input voltage through a double pole RC filter. To prevent the load
current change caused by the input voltage variation, the power source impedance should be
as low as possible, and remote sensing cable must be used to sense load input voltage
when high sink current (low setting resistance) is programmed.
Resistance can be programmed in either of low range or high range by the RANGE key. The
low range is used for input voltage in low voltage range while the high range is for the input
voltage over low voltage range. The current range of CR mode is high range.
There are two resistance levels (A or B) for CR function as static CC mode. Both A and B
states use the same range. You can select CRLA or CRLB using A/B key.
Slew rate
determines the rate that the load level changes from one state to another.
3-6
Operation Overview
3.5.3 Constant Voltage Mode
V
Input
Voltage
Voltage setting
I
Load Current
Figure 3-8
Constant Voltage Mode
In CV mode, the current will be loaded by the programmed value to control the voltage
source. There are two response speeds of CV modes: fast and slow. The fast/slow respond
speed is the slew rate of current change.
Voltage can be programmed in either of low range or high range by the RANGE key. The
low range is used for input voltage in low voltage range while the high range is for the input
voltage over low voltage range.
There are two voltage levels (A or B) for CV function.
A/B key.
You can select CVHA or CVHB using
3.5.4 Constant Power Mode
I
Load
Current
Power setting
P=V*I
V
Input Voltage
Figure 3-9
Constant Power Mode
In CP mode, the current will be loaded by the programmed power. This mode is operated
under the F/W calculation. That is, take the measured V data, divide the Power setting and
get the I setting value. High frequency parts will be removed as there is a lower pass filter
for the measuring data.
3-7
High Power DC Electronic Load 63200 Series Operation & Programming Manual
Power can be programmed in either of low range or high range by the RANGE key. The low
power range is operated under low current range mode while the high power range is under
high current range mode.
There are two power levels (A or B) for CP function as other modes. Both A and B states
use the same range. You can select CPLA or CPLB using A/B key. Slew rate determines
the rate that the load level changes from one state to another.
3.5.5 Load Surge Capability
Chroma’s 63200 Series DC Loads provide a unique load surge simulation capability, which
allows users to overdrive the loads up to 2.7 times their rated power for short periods. This
feature is ideal when the average power require by the UUT is low compared to short-term
peak power demands. Plasma Display Panel (PDPs) testing is one typical application,
others include battery 3C discharge, breaker & fuse over rating (300% to 1000%) tests, car
engine startup simulation and DC motor startup simulation.
The amount of surge loading available using the 63200 loads is related to the initial loading
conditions. Figure 3-10 and Figure 3-11 show the relationship of initial state (Load_Low
under Dynamic mode) and the maximum acceptable overdrive power.
Under this operation, the load will display an Over Power Protection Alarm (OPP) and will
disable the load current if the user violates the maximum load surge capability showed in the
figures below.
Figure 3-10
3-8
Load Surge Capability (Static Mode)
Operation Overview
Figure 3-11
Note
1.
2.
3.
Load Surge Capability (Dynamic Mode)
The Initial state under Static Mode should last at least 1 second.
This load surge capability will be regulated by the temperature de-rating
characteristics. (Refer to Note 1 in Specifications)
Examples below assume the use of the Model 63201 load with a
continuous rating of 2600W/300A/1-80VDC.
Example 1: STATIC LOADING
The Model 63201 can be overdriven to approximately 5200W (200% of its rated continuous
power rating) for 0.06 seconds when the starting power is 650W (25% of its rated power).
This is represented by DOT on the blue curve in Figure 3-10.
Example 2: DYNAMIC LOADING
The Model 63201 is capable of a zero – to- 6500W (250%) pulse at a duty cycle of 5%.
This is represented by the DOT on the purple curve in Figure 3-11.
3.5.6 Timer Function for Battery Discharge Testing
The 63200 Loads include unique timing & measurement function allowing for precision time
settings and measurements in the range of 1s to 99999s. This feature allows users to set a
final voltage & timeout value for battery discharge testing and similar applications.
For example, Figure 3-12 below shows that the 63200’s internal timer can be initiated
automatically when the battery voltage falls below a preset value. The timer will continue
counting until the second preset voltage value is reached.
3-9
High Power DC Electronic Load 63200 Series Operation & Programming Manual
Figure 3-12
3.6
Measurements
The Load measures current, voltage, and power of the UUT and resistance of the Loading.
The sampling rate is about 8 ms. Voltage and current measurements are performed with a
15-bit resolution of full-scale ratings.
There are three sets of 7-segment LEDs for the measuring data. One is for voltage, another
is for current, and the other is for Power or Resistance that you can select under the
configuration setting. The OHMS led will be on when you select the resistance
measurement.
3.7
Slew Rate & Minimum Transient Time
Slew rate is defined as the change in current over time. A programmable slew rate allows a
controlled transition from one load setting to another to minimize induced voltage drops on
inductive power wiring, or to control induced transients on a test device. If the transient
from one setting to another is large, the actual transient time can be calculated by dividing
the current transition by the slew rate. The actual transition time is defined as the time
required for the change of input from 10% to 90% or from 90% to 10% of the programmed
excursion. If the transition from one setting to another is small, the small signal bandwidth
of Load will limit the minimum transition time for all programmable slew rates. Because of
the limit, the actual transition time is longer than the expected time based on the slew rate.
Therefore, both minimum transition time and slew rate must be considered in the
determination of actual transition time. The minimum transition time is from 24 μs to 6 ms
depending on the slew rate setting.
3-10
Operation Overview
3.8
Start/Stop Current Loading
To simulate the transient characteristics of load to UUT, the critical problems are when and
how the Load starts current loading to UUT. You may set the conducting voltage Von to
solve the problems. The Load will start or stop sinking current when the UUT output voltage
reaches the Von voltage. You can start current loading when the load is ON, and the input
voltage is over Von voltage, but stop loading when the load is OFF, or the input voltage is
below Von voltage. See Figure 3-13 and Figure 3-14 for start and stop current loading.
There are two operation modes for Von control, latch and non-latch. Latch means that
when voltage is over Von voltage, Load will start current loading continuously in spite of the
input voltage drop is below Von voltage. Non-latch means that when the input voltage is
below Von voltage, the Load will stop current loading. The Von voltage and operation mode
are set in configuration.
Figure 3-13
Start Current Loading (Von Non-Latch)
3-11
High Power DC Electronic Load 63200 Series Operation & Programming Manual
Figure 3-14
3.9
Stop Current Loading (Von Non-Latch)
Short On/Off
The Load can simulate a short circuit at input by setting it on with full-scale current. The
short circuit can be on/off from the front panel or via remote control. There are two
operations for SHORT key on the front panel. One is toggled on/off, and the other is
controlled by key. They are selected in configuration. The SHORT key will be enabled
only when the Load is ON.
Toggled on/off means pressing SHORT once to enable short circuit, and again to disable it.
Control by Key means pressing SHORT and holding it to enable short circuit, and releasing it
to return to normal operation.
The actual value of electronic short depends on the mode and range that are active when the
short is turned on. Its basic limit is the maximum power range the Load can supply. In CC
mode it is equivalent to the programming of full-scale current. In CR mode it is equivalent to
the programming of the minimum resistance for the present resistance range. In CV mode
it is equivalent to the programming of zero voltage. In CP mode it is equivalent to the
programming of the maximum power for the present power range. Turning on the short
circuit does not affect the programmed setting, and Load input will return to the previous
programmed values when the short circuit is turned off.
Please be noted that turning on the short circuit may cause loading too much current to trig
protection circuit to turn off the Load.
The 63200 series have a TTL signal from RS-485 pin 6 for your
application to control the external short relay. TTL indicates high/low
when the short key is set on/off.
3-12
Operation Overview
3.10 Load On/Off
A module’s input can be toggled on/off through the blue LOAD ON/OFF key on the front
panel, or the remote control.
The on/off change for input is done according to the slew
rate.
Turning off the load does not affect the programmed setting. The load will return to the
previous programmed values when the Load is turned on again.
3.11 Protection Features
The load includes the protection features: Over power, Over temperature, Fan fail, and
Abnormal Alarms for Reverse Voltage and Over Voltage.
The appropriate bits in the Load status registers are set when any of the protection features
or alarm listed above is active. The Load’s buzzer will beep to inform you till protection or
alarm status is reset. When any of the protection or alarm occurs, the Load input will turn off.
z
Over voltage
The over voltage alarm circuit is set at a level slightly above the voltage range specified
in the Load specification. The over voltage status register bit is set when the OV
condition occurs and will remain set till it is reset. The Load will appear OVP as below
when over voltage alarm occurs.
PROTECTION
OVP
z
Over current
When Load is operating in CR or CV mode, it is possible to attempt loading current more
than it is rated for. The limit level of current is set at a level slightly above the current of
the Load. The over current status register bit is set when the OC condition occurs, and
will remain set till it is reset. The Load will appear as below when over current
protection occurs.
PROTECTION
OCP
z
Over power
The over power protection circuit is set at a level slightly above the power range
specified in the Load specifications. The over power status register bit is set when the
OP condition occurs, and will remain set till it is reset. The Load will appear as below
when over power protection occurs. This protection will be activated also if the power
exceeds the maximum surge load capability mentioned in section 3.5.5.
PROTECTION
OPP
3-13
High Power DC Electronic Load 63200 Series Operation & Programming Manual
z
Over temperature
The Load has an over temperature protection circuit, which will turn off the load if
internal temperature exceeds the safe limit. The over temperature status register bit is
set when the OT condition occurs, and will remain set till it is reset. Load will appear as
below when over temperature protection occurs.
PROTECTION
OTP
z
Reverse Voltage
The Load can conduct a reverse current when the polarity of UUT connection is not
correct. The maximum safe reverse current is same as the Load rated current. If the
UUT reverse current is over the Load rated current, the Load may be damaged. If a
reverse voltage condition is detected, you must turn off the power to UUT immediately
and correct the connection. The reverse voltage status register bit is set when the RV
condition occurs, and will remain set till it is reset. The Load will appear as below when
reverse voltage alarm occurs.
PROTECTION
REV
z
FAN FAIL
The Load has a fan fail protection circuit, which will turn off the load if any of the four
fans is out of order. The fan fail status register bit is set when the condition occurs, and
will remain set till it is reset. The Load will appear as below when fan fail protection
occurs.
FAN
FAIL
All of the protections or alarms will latch when they are tripped. When any protection or
alarm occurs, the load will turn off the input, and beep till you remove the condition and reset
the protection by pressing ENTER.
CAUTION
3.12
To protect the Electronic Load from possible damage, the input voltage
must not exceed the maximum input voltage rating specification. In
addition, the Load + terminal potential must be more than the − terminal
potential.
Save/Recall Setting
The Electronic Load setting can be saved and recalled for various test setups use. This
simplifies the repetitive programming for different things. The present setting of mode
parameters (CC, CR, CV, CP), programs and power on status (DEFAULT) can be saved in
EEPROM using the SAVE key. Later you can recall the settings from the specified file via
RECALL key.
3-14
Operation Overview
3.13
Program
The program feature is very powerful. It allows you to simulate various test conditions.
There are ten programs in the Electronic Load. Each program has ten sequences. The
setting mapped to the program sequence in file is one on one. It means that program 1,
sequence 1 maps to file 1, and program 3, sequence 4 maps to file 24. Please see section
4.2.2 and 4.2.3 for setting and running the program.
3.14 External Waveform Control
The external dynamic test, operated in the CC mode, is similar to that under the Dynamic
test, but the load level switching is controlled by the duty cycle of an External TTL signal. It
works the same way as the dynamic test except that the Period control signals are not
generated internally, but are inputted from V EXT. Connectors are on the rear panel. A
0-to-10V external signal corresponds to the 0-to-full scale input range, so that users should
apply DC offset for the external signal in the range from 0 to 10V. For the configuration of
external waveform control usage, refer to section 4.2.5 for details.
3.15 Voltage & Current Monitor
The 63200 series have two isolated BNC connectors to monitor load voltage and current, the
output signal from I MON and V MON. They are on the rear panel. A signal that maps to full
scale will output from BNC connector. VMON is 0 ~ 10V maps to 0V ~ full-scale voltage and
IMON is 0 ~ 10V maps to 0A ~ full-scale high range current. When in low range the IMON
voltage of full-scale current for 63201~63205 is 10V and for 63206~63210 is 8V.
3.16 Von Protection
The design of Von Protection is to protect the Von point from setting to 0V when in “LOAD
ON”, or the overshoot that may occur when the voltage of UUT sudden drops to 0V and rises
again in loading current state. The UUT and DC Load may be damaged if the UUT is
connected.
Von Protection is a default protection value for voltage. Though the DC Load is in loading
mode under the voltage value, there is no real current loading action until the external
voltage is larger than the default of Von Protection. Even if the Von point is set to 0V or the
voltage is sudden dropped to 0V and raised again under loading current state, there will be
no overshoot. This is to prevent the overshoot from damaging the UUT and the DC Load.
Note
When high voltage models (63202,63204 and 63210) are in use, “CC, CP V
RANGE SELECT” are in “HIGH” range and “Von Protection” is enabled, the
maximum current may not be applied under minimum working voltage as the
default voltage protection range of Von Protection is 0.5V~3.5V.
3-15
High Power DC Electronic Load 63200 Series Operation & Programming Manual
Example:
SW
UUT
DC Load
Vs
Figure 3-15
Connection of Power, UUT and DC Load
(1) When it is “LOAD ON”, VON POINT is set to 0V and Von Protection is disabled, the DC
LOAD will occur overshoot when the SW is turned off. It will damage the UUT and DC
Load as Figure 3-16 shows.
V
UUT
Output
t
I
Load Sink
Current
Setting
Figure 3-16
3-16
t
When Von Point is set to 0V without Protection
Operation Overview
(2) When it is “LOAD ON”, VON POINT is set to 0V and Von Protection is enabled, the DC
Load starts loading when the external voltage exceeds the protection voltage. No
overshoot will occur under this condition as Figure 3-17 shows.
V
UUT
Output
Von
t
I
Load Sink
Current
Setting
t
Figure 3-17
When Von Point is set to 0V with Protection
(3) When it is “LOAD ON”, VON POINT is not set to 0V and Von Protection is enabled,
switch the SW to on after it was turned off for a period of time and then turn it off again.
There will be no current loading when the power is lower than the default protection
voltage, and once the SW is turned off and the power is larger than the default voltage,
the loading state will regain as Figure 3-18 shows.
V
UUT
Output
Von
Von
protection
t
I
Load Sink
Current
Setting
t
Figure 3-18
When Von Point is not set to 0V with Protection
3-17
High Power DC Electronic Load 63200 Series Operation & Programming Manual
(4) When it is “LOAD ON”, VON POINT is not set to 0V and Von Protection is disabled,
switch the SW to on after it was turned off for a period of time and then turn it off again.
The current loading still goes on when there is no power, and overshoot may occur once
the SW is turned off with any power input as Figure 3-19 shows. It may damage the
UUT and the DC Load in this case.
V
UUT
Output
Von
t
I
Load Sink
Current
Setting
t
Figure 3-19
Von Point is not set to 0V without Protection
3.17 CR Offset Error Compensation
In CR mode the DC Load will follow the preprogrammed resistance to load the current to
input voltage by linear ratio, and the change of input voltage causes the load current to
change. CR compensation enables the input voltage of any kind to be accurate in CR mode.
The resistance may generate the different offset errors, which could be very big due to
various input voltage if there is no CR compensation.
CR Compensation:
(1) Advantage: The measurement in CR mode will be more accurate because of
compensation and the accuracy of 63200 Series is based on the compensated result.
(2) Disadvantage: Controlling current is the mechanism of compensation and in the process
of continuous compensation; the current will fluctuate until reaching stable state to get
accurate and stable current.
No CR Compensation:
(1) Advantage: The loading current will not fluctuate due to the compensation mechanism.
(2) Disadvantage: The reading in CR mode will be varied with voltage and same for the
accuracy.
3.18 External LOAD ON/OFF Control
The External Load ON/OFF Control is to enable the DC Load ON/OFF function by external
signals via RS-485 cable.
3-18
Operation Overview
1.
First, set the PARALLEL in SYS to NONE.
PARALLEL = NONE
PRESS 0→3 TO SELECT
2.
Next, set the EXT. LOAD ON/OFF EN. in SYS to YES.
EXT. LOAD ON/OFF EN.
1:YES 2:NO
3.
The Pin 7 of RS-485 connector sends out 5V / 0V to control the Load ON / OFF. (The
Load status only changes when the voltage level remains for100ms.)
That is when the 5V voltage sends to Pin 7 it has to remain at least 100ms for the
Load to turn ON, and when the 0V voltage sends to Pin 7 it has to remain at least
100ms for the Load to turn OFF.
Note
As the External Load ON/OFF Control and Parallel are sharing the signal of Pin
7, if setting the EXT. LOAD ON/OFF EN. to YES when the PARALLEL setting is
not NONE, it will appear the following screen and the setting is unable to
change.
PARALLEL MODE
IS ON
On the contrary, if setting the PARALLEL to the value other than NONE when the EXT.
LOAD ON/OFF EN. is set to YES, it will show the following screen and the setting is unable
to change.
EXT. LOAD ON/OFF
IS ON
Timing Chart:
Input Signal
3-19
Local Operation
4.
4.1
Local Operation
Introduction
This chapter describes how to operate the electronic load from the local panel in details.
The descriptions include panel control and indicators.
4.2
Local Operation
In order to use the front panel keys to control the electronic load, local operation must be in
effect. Immediately after the power is applied, local operation will be in effect. When local
operation is in effect, you can use the display with keypad on the front panel to control the
Load. The display can be used to view the programmed setting. The input voltage, current,
power or resistance is displayed on the three 7-segment LEDs.
When you edit setting, the display will blink to let you know which setting
is to be edited or has been selected.
In the remote state, the keys on the front panel have no effect. Only remote controller can
program the Load. The 7-segment will show the present input voltage and current readings.
The Load LCD display will show REMOTE message.
When setting the load level, the resolution of current, voltage, power,
resistance and slew rate will be different from the entered values. The
displayed value will remain as the one entered. But the output will be the
actual value D/A programmed in the load. These parameters except
resistance will be degraded to low values when entered.
4-1
High Power DC Electronic Load 63200 Series Operation & Programming Manual
3
DC ELECTRONIC LOAD
VOLTS
MODEL
63203 60A/600A 16V/80V 4KW
5.2KW
AMPS
WATTS/OHMS
2
CC
CR
CURSOR
EDIT
1
4
Figure 4-1
1.
2.
3.
4.
Line switch
LCD display
7-segment LEDs
System keys
SYS
RECALL
SAVE
CONF
5.
9
6
GO/NG
2
3
0
.
5
6
Front Panel of the Load
Turn the ac power on/off.
Display setting information normally.
Show the V, I, P, R measured data.
To set the remote control status, ext. wave enable and
Parallel function parameters.
To recall the saved settings from EEPROM, and all settings
from specified files (1 to 100).
To save the present mode settings in the specified files (1 to
100). The save program is from 1 to 10. Saving DEFAULT
is to save the status for the next time the Electronic Load is
turned on. All saved settings are stored in EEPROM, and
will not be lost when ac power is cycled.
To select configuration data for editing.
Function keys
CC
CR
CV
CP
RANGE
CURRSOR EDIT
PROG.
4-2
8
5
1
CV
CP
7
4
To select the constant current mode for editing and the CC
led aside this key will be on.
To select the constant resistance mode for editing and the CR
LED aside this key will be on.
To select the constant voltage mode for editing and the CV
led aside this key will be on.
To select the constant power mode for editing and the CP
LED aside this key will be on.
To select the setting level range for each mode.
Enable to edit the digit by rotary knob under loading condition.
This key is valid only when the Load is in on status.
To select a program for settings or running.
Local Operation
GO/NG
A/B
DYNA.
SHORT
LOAD ON/OFF
6.
To enable the SPEC. checking test. The GO/NG LED will turn
red when any of the SPEC fails. It will turn green when the
check is all right.
To select one of the two static settings. The LED aside this
key will be on when you choose A setting, and off when you
choose B setting.
Choose the dynamic current waveform and run the setting
under Constant current mode. This key is only valid in CC
mode and the LED aside this key will be on when in this
status.
The Load can simulate a short circuit across the input. The
short circuit can be enabled when this key is pressed. When
the input is shorted, the LED aside this key will be active.
The SHORT key can be set in configuration to toggle on/off,
or active by pressing.
The input can be toggled on or off by pressing LOAD. The
LED aside this key will be active when the input is turned on.
Entry keys
▲, ▼
CLEAR
ENTER
0
.
-
9
They let you scroll through the choices in a parameter list for
a specific command. Parameter lists are circular. You can
return to the starting position by pressing either key
continuously.
To clear the digit entered from keypad. This key lets you
correct wrong digits before they are entered.
It executes the entered value or the parameter for the
command accessed presently. The parameters you have
entered with other keys are displayed but not entered into the
Load until you press this key. Before pressing ENTER you
can change or abort anything entered into the display
previously.
They are used for entering numeric values.
It is a decimal point.
Rotary knob allows you to change the setting value
continuously by turning this knob.
4.2.1
Setting the Operation Mode
The CC, CR, CV, and CP keys are used to select the Load modes for local control.
The load levels and slew rates are common to CC, CR, and CP modes. CV mode sets
voltage level and response speed. There are two level settings for CC, CR, CV, and CP
modes. They can be switched by the A/B key.
4-3
High Power DC Electronic Load 63200 Series Operation & Programming Manual
Setting CC Values
There are four modes for CC operation: CCL, CCH, CCDL, CCDH. The current levels are
programmed in Amps. The slew rate levels are programmed in Amps/μS. The timings are
programmed in millisecond. The setting buffers of four CC modes are independent.
Changing the operation range doesn’t affect the settings of other ranges. The following
examples show how to set the CC values for the Load model number 63203 channel.
1.
Select mode
Press CC key to go into the CC static mode.
CCLA :
CCLB :
2.
0.000A
0.000A
Select range
Press RANGE key to choose the high range constant current mode.
CCHA :
CCHB :
0.00A
0.00A
If press RANGE again, it will go back to the low range constant current mode.
3.
Set Current Level
There are 4000 discrete steps from 0 to full scale in each range. Set level A current
level to 200A by pressing 2, 0, 0, ENTER. Set level B current level to 5A by pressing
5, ENTER.
CCHA :
CCHB :
4.
200.00A
5.00A
Set Slew Rate
There are 250 discrete steps in each range. Set the rise 20 A/μs and fall slew rates to
0.5A/μs by pressing 2, 0, ENTER for rise and 0, . , 5 ENTER for fall slew rate.
CCH
CCH
5.
:
:
20.0A/us
0.5A/us
Set Voltage spec
Set the high voltage spec. to 6 V by pressing 6 , ENTER.
CCH
HIGH :
VOLTAGE SPEC.
6.000V
Set the low voltage spec. to 4 V by pressing 4 , ENTER.
4-4
Local Operation
CCH
LOW :
VOLTAGE
SPEC.
4.000V
Then the display will go to the first editing page again.
Spec. value can also be programmed by PERCENT under Configure
setting. You have to input the CENTER Voltage, and then enter the
HIGH and LOW percent to the center voltage.
6.
Set dynamic current mode.
Press DYNA key under CC mode, and select current range by RANGE key. Program
the high current level to 50A by pressing 5, 0, ENTER keys. Program the low current
level to 5A by pressing 5, ENTER keys.
CCDL1:
CCDL2:
50.000A
5.000A
Then set the dynamic function period T1 to 0.1 ms, period T2 to 0.2 ms by pressing
0, . , 1, ENTER and 0, . , 2 , ENTER . The range of dynamic period is from 0.025
ms to 30 Sec.
CCDLT1:
CCDLT2:
0.100ms
0.200ms
The slew rate and Voltage Spec settings are same as those of static current mode.
If you press ENTER key, and the blinked data do not go to next, change
the configuration setting Enter Data Next to YES.
Setting CR Values
The Load CR mode is programmed by pressing CR. The resistance values can be
programmed in low voltage (CRL) or high voltage (CRH) range. The current is always in
high range. All resistance levels are programmed in Ω. The slew rate is in A/μs.
Following examples illustrate how to set the CR values for Load model number 63203.
1.
Select range
Press RANGE key to choose the high range CR mode.
CRHA :
CRHB :
500.000Ω
500.000Ω
If press RANGE again, it will go back to the low range CR mode
4-5
High Power DC Electronic Load 63200 Series Operation & Programming Manual
2.
Set Resistance Level
Set level A resistance level to 200Ω by pressing 2, 0, 0, ENTER.
resistance level to 1Ω by pressing 1, ENTER.
CRHA :
CRHB :
3.
Set level B
200.000Ω
1.000Ω
Set Slew Rate
Set the rise 20 A/μs and fall slew rates to 0.5A/μs by pressing 2, 0, ENTER for rise and
0, . , 5, ENTER for fall slew rate.
CRH
CRH
4.
:
:
20.0A/us
0.5A/us
Set Voltage spec
Set the high voltage spec. to 6 V by pressing 6 , ENTER.
CRH
HIGH :
VOLTAGE SPEC.
6.000V
Set the low voltage spec. to 4 V by pressing 4 , ENTER.
CRH
LOW :
VOLTAGE
SPEC.
4.000V
Then the display will go to the first editing page again.
Setting CV Values
The CV mode for the Load is programmed by pressing CV. The voltage values can be
programmed in low voltage (CVL) or high voltage (CVH) range. The current is always in
high range. All voltage levels are programmed in Volt.
The following examples illustrate how to set CV values for Load model number 63203.
1.
Select range
Press RANGE key to choose the low range CV mode.
CVLA :
CVLB :
16.000V
16.000V
If press RANGE again, it will go back to the high range CV mode.
4-6
Local Operation
2.
Set voltage Level
Set level A voltage level to 10 V by pressing 1, 0, ENTER.
Set level B voltage level to 8 V by pressing 8, ENTER.
CVLA :
CVLB :
3.
10.000V
8.000V
Set Response Speed
There are two response speeds for CV mode, fast and slow for different UUT testing.
Refer to Figure 4-2 and Figure 4-3 for transfer functions.
CVL RESPONSE
1: FAST
2. SLOW
Press 2, ENTER to choose the slow response.
4.
Figure 4-2
CV Response Transfer Function (FAST)
Figure 4-3
CV Response Transfer Function (SLOW)
Set Current spec
Set the high current spec. to 8 A by pressing 8, ENTER.
4-7
High Power DC Electronic Load 63200 Series Operation & Programming Manual
CVL CURRENT SPEC.
HIGH :
8.000A
Set the low current spec. to 4 A by pressing 4, ENTER.
CVL
LOW :
CURRENT
SPEC.
4.000A
Then the display will go to the first editing page again.
Setting CP Values
The CP mode for the Load is programmed by pressing CP. The power values can be
programmed in low current (CPL) or high current (CPH) range. All power levels are
programmed in Walt. The slew rate is in A/μs.
The following examples illustrate how to set CP values for Load model number 63203.
1.
Select range
Press RANGE key to choose the high range CP mode.
CPHA :
CPHB :
12.000W
12.000W
If press RANGE again, it will go back to the low range CP mode
2.
Set Power Level
Set level A power level to 200 W by pressing 2, 0, 0, ENTER.
Set level B power level to 4000 W by pressing 4, 0, 0, 0, ENTER.
CPHA :
CPHB :
3.
200.000W
4000.000W
Set Slew Rate
Set the rise 20 A/μs and fall slew rates to 0.5A/μs by pressing 2, 0, ENTER for rise and
0, . , 5, ENTER for fall slew rate.
CPH
CPH
4.
:
:
20.0A/us
0.5A/us
Set Voltage spec
Set the high voltage spec. to 6V by pressing 6, ENTER.
4-8
Local Operation
CPH
HIGH :
VOLTAGE SPEC.
6.000V
Set the low voltage spec. to 4 V by pressing 4, ENTER.
CPH
LOW :
VOLTAGE SPEC.
4.000V
Then the display will go to the first editing page again.
4.2.2 Setting the Program
The Electronic Load is able to select customized basic tests, and link them to a program test
for automatic execution.
The PROG. key is used to select program or recall program for local control. There are ten
programs (1-10). Each program has ten sequences to map files from 1 to 100. Program 1
maps files from 1 to 10. Table 4-1 shows the relationship between the program sequence
and the corresponding file.
1
2
3
4
5
6
7
8
9
10
Program 1 Sequence No.
1
2
3
4
5
6
7
8
9
10
Corresponding File No.
1
2
3
4
5
6
7
8
9
10
Program 2 Sequence No.
11
12
13
14
15
16
17
18
19
20
Corresponding File No.
:
:
2
3
4
5
6
7
8
9
10
Program 10 Sequence No. 1
91
92
93
94
95
96
97
98
99 100
Corresponding File No.
Table 4-1 The Relationship of the Program Sequence and the Corresponding File.
When running a program you must set its corresponding file parameters first. If one
program sequence is not enough for you to test the UUT, you can use program chain
function to get more sequences.
Press PROG. key, and the LCD will display as follows. Press number 1 -10 followed by
ENTER to recall program from EEPROM, or use ▲, ▼ keys to edit the program.
PROGRAM
No:
1
1.
SELECT
Setting the Program Chain
The chain function of program enables you to chain program so as to get more
sequences for testing. Set program chain number to 0 means no program chained.
Program chain function can chain itself for loop test, or other programs.
Press 1, ENTER to chain itself for loop test. The default setting is 0.
4-9
High Power DC Electronic Load 63200 Series Operation & Programming Manual
PROGRAM
No:
1
2.
CHAIN
Setting the Sequence Mode
There are three modes to control the method of sequence execution.
SKIP:
AUTO:
MANUAL:
Skip the sequence. Load will not change the input status.
Use ON/OFF time to control Load input on/off. When ON/OFF time
passes, the Load will get to the next sequence automatically.
Use ▲, ▼ or number 0 to 9 to control the execution sequence.
Pressing number key lets you select a random sequence number to
execute. Pressing 0 means to go to sequence 10.
Press 2, ENTER keys to set sequence 1 to manual mode. You need to set ten
sequence settings for one program. The default setting is SKIP.
[ SEQ 1 ]
0: SKIP
3.
1: AUTO
2: MANUAL
Setting the Sequence Load ON/OFF Time
The sequence ON/OFF time controls the Load input ON/OFF when the program’s
sequence is executed. The ON/OFF time range is 0 to 60 seconds. (30s each)
SEQUENCE 1
LOAD ON TIME : 20.0 s
Press 8, ENTER keys to set OFF time for 8 seconds.
for OFF time.
The default setting is 0 second
SEQUENCE 1
LOAD OFF TIME : 8.0 s
4.
Setting the Short Delay/ON Time
The range of short delay and on time is from 0 to 60 Sec. The short delay time starts
from the beginning of the Load on time. If the short time is set to 0 Sec., the Load will
not short. The default setting is 0 Sec.
SEQUENCE 1
SHORT DELAY :
0.0 s
Press 8, ENTER to set SHORT on time for 8 seconds.
4-10
Local Operation
SEQUENCE 1
SHORT ON TIME : 8.0 s
5.
Setting the Sequence P/F Delay/ON Time
The sequence Pass/Failure Delay/ON time let you set the delay time for P/F checking
and on time for how long it checks when load condition changes. The failure status of
the sequence will latch when a program is executed. It means that any failure will be
memorized even when the UUT becomes stable within the specifications later. The
range of P/F delay and ON time is from 0 to 60 seconds. Press 1, ENTER to set the
sequence P/F delay time for 1 second and then 5, ENTER for P/F on time for 5 seconds.
Both default setting are 0 second.
P/F
SEQUENCE 1
DELAY :
1.0 s
P/F
SEQUENCE 1
ON TIME : 8.0 s
4.2.3 Running the Program
Press LOAD ON/OFF to run program when the program function is selected.
shows as below.
The display
PROG. 1
SEQ. 1
[ON ][ KEY ] [ PASS ] [ S ]
The upper line shows the executed program and sequence number while the lower line
shows the Load, key, test result and short status.
ON/OFF:
KEY:
PASS/FAIL:
S:
It shows the Load input status.
It displays when MANUAL mode is active and waiting for key input.
It shows the test result compared with SPEC setting.
It display if Load is Short now.
When executing the program, the setting of sequence will recall files from EEPROM, and the
SPEC function is always ON. All function keys are disabled until LOAD ON/OFF is pressed
to stop the program execution, or the program run finishes. When the program run stops or
finishes, the LCD will display as follows.
PROGRAM
RESULT :
OFF
PASS
It means that all sequences have passed in the program tests.
show as follows.
If the test fails, LCD will
4-11
High Power DC Electronic Load 63200 Series Operation & Programming Manual
PROG. XX
Err.
1, 2, 3,…….10
REPORT
PROG. XX indicates the file number of the program failed, 1 to 10. In addition, 1, 2, 3...10
shown by LCD stand for the failed sequence numbers. During program chain testing, if the
failed program files are more than one set, you can use ▲, ▼ to read the contents of failed
programs.
4.2.4 Setting the Specification
The GO/NG key is to enable/disable specification checking function. The Load will
compare measurement data with the set specifications for HIGH and LOW boundary when
the SPEC TEST is ON, and the LED, GO/NG, is lighted on the panel. To set specifications
for the load; please refer to the section 3.5 at the end of each mode for parameters setting.
The specification unit for CC, CR, and CP modes is volt while CV mode is current. There
are three levels for each mode: CENTER, HIGH and LOW. The CENTER level must be set
by the value of channel input reference level. The HIGH and LOW levels can be set by the
value or percentage selected in configuration SPEC.ENTRY MODE. The HIGH/LOW
percentage range is from 0 to 100%.
The default setting of HIGH and LOW is 100%. The CENTER value is half of the range.
Please refer to section 4.2.5 for the specification selection set by Value or Percentage.
4.2.5 Setting the Configuration
The Electronic Load provides useful features such as Von point, Current limit, Auto Load On,
etc. To use these powerful features, you must set relevant parameters in accordance with
application needs by the configuration setup. This procedure is only needed for initial setup
of a test operation. The configuration of the Load is stored in EEPROM. To set
configuration you must press the CONF key.
Set the voltage range for CC, CP mode. There are two voltage ranges for CC or CP
mode. High range is for high voltage and low range is for low voltage so as to get better
voltage resolution. The default setting of V range is HIGH.
CC, CP V RANGE SELECT
1: HIGH
2: LOW
Set Von Protection in two ways. 1. When Von Protection is set to YES, the default voltage
protection value will be set, see 3.16 Von Protection for detail description. 2. When NO is
selected there will be no default voltage protection value. A warning of “CAUTION: If Voltage
rise of UUT is < 250us, it may cause damages of 63200s.” will prompt when NO is set.
Von PROTECTION
1:YES
2:NO
4-12
Local Operation
When high voltage models (63202,63204 and 63210) are in use, “CC,
CP V RANGE SELECT” are in “HIGH” range and “Von Protection” is
enabled, the maximum current may not be applied under minimum
working voltage as the default voltage protection range of Von Protection
is 0.5V~3.5V.
Von Protection is a default for the version of 1.21, 1.30 and 1.40 in
<LOAD FW> MAIN, and it is an option in version 1.50 and above.
Set Von point. Von is the conduction voltage level when the Electronic Load starts loading
current and the UUT output reaches the Von voltage. The default setting of Von voltage is
1V.
Von
POINT
VOLTAGE =
1.000V
Set Von latch. There are two operation modes for Von control. Von latch ON means that
Load will keep loading current when it reaches Von voltage. Von latch OFF means that
Load will stop loading current when UUT voltage is under Von voltage. The default setting
of Von latch is OFF. Figure 4-4 and Figure 4-5 show the Von LATCH ON and OFF current
waveform respectively.
Von LATCH ENABLE
1: YES
2: NO
CAUTION
If Von is set to 0V, the Load circuit will be ON in spite of no UUT. This
will get overshoot spike. If a UUT is applied, the overshoot may
damage the UUT even though the Load current sets small. So, do not
set Von to 0V.
4-13
High Power DC Electronic Load 63200 Series Operation & Programming Manual
Figure 4-4
Von LATCH ON Current Waveform
Figure 4-5
Von LATCH OFF Current Waveform
Set CV mode CURR_LIMIT. This function will limit the current loading to protect the UUT
in CV mode. The default setting of current limit is the maximum Load current.
CV CURRENT LIMIT
CURRENT =
200.000A
4-14
Local Operation
Set sign of voltage for display. The Electronic Load will show minus sign of the voltage if
MINUS is selected. No sign will show if select PLUS. The default setting is PLUS.
Selecting MINUS of SIGN OF VOLT. will occupy one digit. The displayed digits are five.
SIGN OF
1. PLUS
VOLTAGE
2. MINUS
Set POWER/OHM for display. The right one of the three 7-segment LEDs can be selected
to display POWER or OHM measurement data. The default setting is POWER. The LED
“OHMS” will be lighted if you select OHM by pressing 2, ENTER.
POWER / OHM SELECT
1: POWER
2: OHM
Set the specifications of entry mode. The specifications of Load can be set by VALUE or
Percentage for HIGH and LOW data. The percentage values refer to CENTER value of
specification. The default setting of SPEC entry mode is percentage.
SPEC. ENTRY MODE
1: VALUE
2: PCet
Select data entry mode by ENTER. If YES is selected for data entry, the setting will go to
the next one after pressing ENTER. If NO is selected for data entry, the setting will remain
at the same line for you to change it again and again. The default setting is NO.
ENTER DATA NEXT
1: YES
2: NO
Select SOUND ENABLE. When you press the key on the module, it will produce a sound if
sound = YES. The default setting for sound is YES.
SOUND
1: YES
ENABLE
2: NO
Select Load input status when it is powered ON. If YES is selected, the module will be
active according to AUTO LOAD ON mode setting. The default setting of AUTO LOAD ON
is NO.
AUTO LOAD ON
1: YES
2: NO
Select the load on mode if AUTO LOAD ON is ON. If LOAD is selected, the Load will be
active as DEFAULT setting. If PROG is selected, the Load will be active as the program
saved last time. The default setting of AUTO LOAD ON MODE is LOAD.
4-15
High Power DC Electronic Load 63200 Series Operation & Programming Manual
AUTO LOAD ON MODE
1: PROG
2: LOAD
Select short key mode. Set SHORT key mode for the Load.
SHORT mode is TOGGLE.
The default setting of
SHORT KEY MODE
1: TOGGLE
2: HOLD
Set Battery Discharge. If setting Battery Discharge to Yes, a Final Voltage window will
appear. Enter the end voltage for Battery Discharge, see 3.5.6 for detail description.
Battery Discharge:
1:YES
2:NO
Set CR Offset. Select if performing CR compensation. It is enabled if Yes is selected and
the accuracy of CR will be enhanced, see 3.17 for detail description.
CR Offset ENABLE:
1:YES
2:NO
Display the versions of host, load, and Panel.
<HOST FW>
WRTR: 02.00
BOOT: 02.00 MAIN: 02.31
Press ▼ key and the display will show:
<LOAD FW> WRTR: 02.00
BOOT: 02.00 MAIN: 02.31
Press ▼ key and the display will show:
<PANEL FW> WRTR: 02.00
BOOT: 02.00 MAIN: 02.31
4.2.6 Recalling Files
Press RECALL to recall files from 1 to 100. Files 1 to 100 are user data. After a file is
recalled, the display will go to mode editor for you to edit or view the file. Pressing RECALL
the display will show the file no. last recalled. The default file no. is 1 when the Load is
powered on.
Press RECALL, 3, ENTER to recall the number 3.
4-16
Local Operation
RECALL
FILE
FILE NO : 3
The data of the Load will be recalled when you execute file recall.
4.2.7 Saving File/Default/Program
There are 100 file locations (1 to 100) for you to save files. Press SAVE, 2, 0, ENTER to
save a file to location 20.
SAVE
FILE
FILE NO :
20
Press SAVE, ▲, ▼ until the display shows as follows. The DEFAULT states are used for
Electronic Load after power-on. Press 1, ENTER to save DEFAULT to EEPROM.
SAVE
1: YES
DEFAULT
2: NO
Press SAVE, ▲, ▼ until the display shows as follows.
SAVE
1: YES
Press 1, ENTER to save program.
PROGRAM
2: NO
4.2.8 Going To Local
The CONF./LOCAL key operates as local key when Electronic Load is in remote mode.
You can press CONF./LOCAL key to go to local operation when Load is in remote state.
local operation, CONF./LOCAL key operates as CONF key.
In
4.2.9 Setting System and RS-232C Connection
GPIB Address setting.
Press 8, ENTER to set the Load GPIB address to 8.
GPIB
ADDRESS
8
RS485 Address setting. Press 3, ENTER to set the Load RS485 address to 3. This is for
setting the models ID when used in parallel mode.
4-17
High Power DC Electronic Load 63200 Series Operation & Programming Manual
RS485
RS-232C parameters setting.
Check and Data Bit number.
Baud Rate:
Parity Check:
Data Bit:
Stop Bit:
ADDRESS
3
There are four parameters for you to set: Baud Rate, Parity
0:4800, 1:9600, 2:19200, 3:38400, 4:57600, 5: 115200 bits/second
0: NONE, 1: EVEN, 2: ODD
1: 7 bits, 2: 8 bits
1: 1 bit, 2: 2 bits
The RS-232C connector on the rear panel is a 9-pin connector (DB-9, male connector).
The RS-232C connector bus signal is defined as below.
Pin Number
1
2
3
4
5
6
7
8
9
Note
RS-232C Connector
Input/Output
--Input
Output
Output
--Input
Output
Input
---
Description
+5V
RxD
TxD
DTR
GND
DSR
RTS
CTS
+5V
Pin 1 and pin 9 (+5V) are for 63200 series Remote Controller only.
External wave Enable. The Load current can be controlled by the external DC voltage
input via the Vext BNC connector on the rear panel if this function is selected 1: YES.
The default is 2: NO. The Ext. Wave LED will be lighted when operating in this mode.
4.2.10 Online Change Level
The Load provides you two ways for changing level online. They are convenient for you to
change load directly with the rotary knob when LOAD ON. These two operation modes are
described below.
By Rotary knob: In LOADON, change load with the rotary knob in resolution unit.
When the rotary knob rotates clockwise, it means as follows.
CC mode: raise the current value.
CR mode: raise the resistance value.
CV mode: raise the voltage value.
CP mode: raise the power value.
When the rotary knob rotates counterclockwise, it means as follows.
CC mode: lower the current value.
CR mode: lower the resistance value.
CV mode: lower the voltage value.
CP mode: lower the power value.
4-18
Local Operation
By CURSOR EDIT: In LOAD ON, press the mode key CC, CR, CV, or CP to make the
display show numeric values for the setting. Press CURSOR EDIT to
see the cursor blinking on the display. Press ▲, ▼ keys to move the
cursor to the digit you want to edit. Change the value by rotary knob.
Press the CURSOR EDIT key again to disable the cursor.
4-19
Basic Information for Programming
5.
5.1
Basic Information for Programming
Introduction
The following sections describe how to program the 63200 series electronic load remotely
from a GPIB controller or RS-232C. The command set introduced here can be applied to all
63200 series electronic loads.
Either GPIB or RS-232C can be used one at a time. They cannot be used simultaneously.
If GPIB is used first in remote control, RS-232C will be disabled unless the machine is reset,
and vice versa.
5.1.1 Setting the GPIB Address and RS-232C Parameters
The electronic load is shipped with the GPIB address set to 5. The address can be only
changed via the “SYS” functional list menu (please see section 4.2.9). This menu is also
used to select the RS-232C interface, and specify the parameters such as baud rate and
parity.
5.1.2 Wire Connection of RS-232C
The Electronic Load is shipped with the baud rate set to 115200, parity set to is None, and
data length 8 bits, stop1 bit. For RS-232C interface, only TxD and RxD signals are used for
data transfer. The RS-232C connector is a 9-pin D male connector. Following table shows
you the RS-232C connector pins and signals.
Table 5-1
Pin No.
1
2
3
4
5
6
7
8
9
Input/Output
Description
--INPUT
OUTPUT
OUTPUT
--INPUT
OUTPUT
INPUT
---
+5V
RxD
TxD
DTR
GND
DSR
RTS
CTS
+5V
The connection between the computer (IBM PC compatible) and the Electronic Load is
illustrated below:
5-1
High Power DC Electronic Load 63200 Series Operation & Programming Manual
5.2
Electronic Load
PIN
IBM PC
1
DCD
2
RX
RX
3
TX
TX
4
DTR
5
GND
6
DSR
No Connection
7
RTS
No Connection
8
CTS
No Connection
9
RI
No Connection
No Connection
No Connection
GND
GPIB Capability of the Electronic Load
GPIB Capability
Table 5-2
Response
Interface
Functions
All electronic load functions are programmable over the
GPIB. The electronic load can send and receive
AH1, SH1, T6,
Talker/Listener
messages over the GPIB. Status information is sent
L4
using a serial poll.
The electronic load will set the SRQ line true if there is
SR1
Service Request
an enabled service request condition.
In local mode, the electronic load is controlled from the
front panel but will also execute commands sent over
the GPIB. The electronic load powers up in local
mode and remains there until it receives a command
over the GPIB. Once the electronic load is in remote
RL1
Remote/Local mode, REMOTE will be shown on the front panel LCD,
all front panel keys except LOCAL are disabled.
Pressing LOCAL key on the front panel will return to
local mode. Local can be disabled using local lockout,
so only the controller or the power switch can return to
local mode.
5-2
Basic Information for Programming
5.3
RS-232C in Remote Control
When you use RS-232C in remote control, you have to send the remote command
CONFigure : REMote ON first to let control procedure enter into remote state, and then
execute other command set. When control comes to an end, you have to send the
command CONFigure : REMote OFF to let control procedure return to local operation mode.
The RS-232C control commands are same as those of GPIB. When the RS-232C
command string comes to an end for sending, <nl> should be added. Its ASCII code is 0A
hexadecimal (or 10 decimal).
5-3
Introduction to Programming
6.
Introduction to Programming
6.1
Basic Definition
GPIB statement includes instrument control and query commands. A command statement
sends an instruction to the electronic load and query command request information from the
electronic load.
Simple Command
A simple command statement consists of a command or keyword usually followed by a
parameter or data:
or
LOAD ON
LOAD:SHORT OFF
Compound Command
When two or more keywords are connected by colons (:), it creates a compound command
statement. The last keyword usually is followed by a parameter or data:
or
CURRent:STATic:L1 3
CONFigure:VOLTage:RANGe H
Query Command
A simple query command consists of a keyword followed by a question mark:
MEASure:VOLTage?
MEASure:CURRent? or CHAN?
Forms of Keywords
Every keyword has two forms:
Long-Form
Short-Form
In this form, the word is spelled out completely to identify its function. For
instance, CURRENT, VOLTAGE, and MEASURE are long-form
keywords.
In this form, the word contains only the first three or four letters of the
long-form. For instance, CURR, VOLT, and MEAS are short-form
keywords.
In keyword definitions and diagrams, the short-form part of each keyword is emphasized in
UPPER CASE letters to help you remember it. However, the electronic load will accept Volt,
volt, voltage, VOLTAGE, volTAGE, etc. regardless to which form you apply. If the keyword
is incomplete, for example, “VOL” or “curre”, it will not be recognized.
6-1
High Power DC Electronic Load 63200 Series Operation & Programming Manual
6.2
Numerical Data Formats
Chroma 63200 electronic load accepts the numerical data type listed in Table 6-1. Numeric
data may be followed by a suffix to specify the dimension of the data. A suffix may be
preceded by a multiplier. Chroma 63200 makes use of the suffixes listed in Table 6-2 and
multipliers listed in Table 6-3.
Table 6-1
Numerical Data Type
Symbol Description
Digits with no decimal point. The decimal point is
NR1
assumed to be to the right of the least-significant digit.
NR2
Digits with a decimal point.
NR3
Digit with a decimal point and an exponent.
NRf
Flexible decimal form that includes NR1 or NR2 or NR3.
Expanded decimal form that includes NRf and MIN,
NRf+
MAX. MIN and MAX are the minimum and maximum
limit values for the parameter.
Mode
CC
CR
CV
CP
ALL
ALL
Class
Current
Resistance
Amplitude
Power
Time
Slew Rate
Multiplier
1E6
1E3
1E-3
1E-6
1E-9
6.3
Table 6-2
Preferred Suffix
A
OHM
V
W
S
A/μS
Example
123, 0123
123., 12.3, 0.123, .123
1.23E+3, 1.23E-3
123, 12.3, 1.23E+3
123, 12.3, 1.23E+3,
MIN, MAX
Suffix Elements
Secondary Suffix Referenced Unit
Ampere
Ohm
Volt
Watt
Second
Amperes/micro Second
Table 6-3 Suffix Multipliers
Mnemonic
Definition
MA
K
M
U
N
mega
kilo
milli
Micro
Nano
Character Data Formats
For command statements, the <NRf+> data format permits entry of required characters.
query statements, character strings may be returned in either of the forms shown in the
following table. It depends on the length of the returned string.
Symbol
Character Form
Crd Character Response Data. They permit the return up to 12 characters.
Arbitrary ASCII Response Data. They permits the return of undelimited
aard 7-bit ASCII. This data type is an implied message terminator (refer to
Separators and Terminators).
6-2
For
Introduction to Programming
6.4
Separators and Terminators
In addition to keywords and parameters, GPIB program statements require the following:
Data Separators:
Data must be separated from the previous command keyword by a space. This is shown in
examples as a space (CURR 3) and on diagrams by the letters SP inside a circle.
Keyword Separators:
Keywords (or headers) are separated by colon (:), semicolon (;), or both.
For example:
LOAD:SHOR ON
MEAS:CURR?;VOLT?
CURR:STAT:L1 3;:VOLT:L1 5
Program Line Separators:
A terminator to inform GPIB that it has reached the end of a statement. Normally, this is
sent automatically by your GPIB programming statements. Termination also occurs with
other terminator codes, such as EOI. In this manual, the terminator is assumed at the end
of each example line of code. If it needs to be indicated, it is shown by the symbol <nl>,
which indicates “new line” and represents the ASCII coded byte as 0A hexadecimal (or 10
decimal).
Traversing the Command Tree:
■
The colon “:” separates keywords from each other which represents changes in branch
level to the next lower one. For example:
CONF:VOLT:ON 5
CONF is a root-level command, VOLT is the first branch, and ON is the second branch.
Each “:” moves the command interpretation downward to the next branch.
■
The semicolon “;” allows you to combine command statements into one line.
the command interpretation to the previous colon.
It returns
For example: Combine the following two command statements:
RES:RISE 100 <nl>
RES:L1 400 <nl>
and
which can be formed into one command line as follows:
RES:RISE 100;L1 400 <nl>
To return to the root-level form you can
1.
2.
Enter a new-line character. This is symbolized as “<nl>” and can be linefeed “LF”
or/and end-of-line “EOL”. Or else,
Enter a semicolon followed by a colon “;:”.
6-3
High Power DC Electronic Load 63200 Series Operation & Programming Manual
Please refer to the following figure.
1.
2.
6-4
(root):VOLT:L1: 30<nl>
Starting a New Line to return to the Root.
(root):SPEC:VOLT:H 30;
:L 5;:
(root)RES:L1 400;
:RISE 1000;:
Language Dictionary
7.
Language Dictionary
Commands for operating the 63200 Electronic Load remotely are grouped into subsystems.
Each command belonging to the same subsystem is arranged in alphabetic order. A syntax
chart of the subsystem that contains the commands in the same group is included. Subsystems are ordered alphabetically according to their names in the following sections.
7.1.1 Common Commands
Common commands defined by the IEEE488.2 standard are generic commands and queries.
The first part of the language dictionary covers the commands. Each of them has a leading
“*”.
Common Commands Syntax
*CLS
Clear status
*ESE <NR1>
Standard event status enable
*ESE?
Return standard event status enable
*ESR?
Return event status enable
*IDN?
Return instrument identification
*OPC
Enable “operation complete” bit in ESR
*OPC?
Return a “1” when operation complete
*RCL <NRf>
Recall instrument state
*RST
Reset
*SAV <NRf>
Save instrument state
*SRE <NR1>
Set service request enable register
*SRE?
Return service request enable register
*STB?
Return status byte
7.1.2 Common Command Dictionary
*CLS
Description
Syntax
Parameter
*ESE
Description
Clear Status Command
This command clears the following actions:
1. Clear Questionable Status Event register
2. Clear Standard Event Status Event register
3. Clear Status Byte
4. Clear the Error Queue
*CLS
None
Standard Event Status Enable Command/Query
This command sets the condition of the Standard Event Status
Enable register to determine which event the Standard Event Status
Event register (see *ESR?) is allowed to set the ESB (Event
Summary Bit) for the Status Byte register. A "1" in the bit position
enables the corresponding event. All the events enabled by
Standard Event Status Event register are logically ORed to cause
the ESB (bit 5) of the Status Byte register to be set. See the
descriptions of these registers in Chapter 8 Status Reporting.
7-1
High Power DC Electronic Load 63200 Series Operation & Programming Manual
Syntax
Parameter
Example
Query Syntax
Return Parameter
Query Example
*ESR?
Description
*ESE <NRf>
0 to 255
*ESE 48
This command enables the CME and EXE events
for the Standard Event Status Event register.
*ESE?
<NR1>
*ESE?
This query returns the current setting for "Standard
Event Status Enable".
Standard Event Status Register Query
This query reads the Standard Event Status register. Reading
the register clears it. See detailed explanation of this register in
Chapter 8 Status Reporting.
Bit Configuration of Standard Event Status Event Register
7
6
5
4
3
2
1
0
Bit Position
0
0
CME
EXE
DDE
QYE
0
OPC
Bit Name
128
64
32
16
8
4
2
1
Bit Weight
CME = Command error
DDE = Device-dependent error
EXE = Execution error
OPC = Operation complete
QYE = Query error
Query Syntax
Return Parameter
Query Example
Return Example
*IDN?
Description
Query Syntax
Return Parameter
Query Example
Return Example
*OPC
Description
Syntax
Parameter
*OPC?
Description
Query Syntax
Return Parameter
Query Example
7-2
*ESR?
<NR1>
*ESR?
48
Return the Standard Event Status Register readings.
Identification Query
This query requests the Electronic Frame (632xx) to identify itself.
*IDN?
<aard>
*IDN?
String
Information
Chroma
Manufacture
632xx
Model name
12345678
Serial number
01.00
Firmware version
Chroma,63203,12345678,01.00
Operation Complete Command
This command causes the interface to set the OPC bit (bit 0) of the
Standard Event Status register when the Electronic Frame (6320)
has completed all pending operations.
*OPC
None
Operation Complete Query
This query returns an ASCII “1” when all pending operations are
completed.
*OPC?
<NR1>
1
Language Dictionary
*RCL
Description
Syntax
Parameter
Example
*RST
Description
Syntax
Parameter
*SAV
Description
Syntax
Parameter
Example
*SRE
Description
Syntax
Parameter
Example
Query Syntax
Return Parameter
Query Example
*STB?
Description
Recall Instrument State Command
This command restores the electronic load to a state that was
previously stored in memory with *SAV command to the specified
location (see *SAV).
*RCL <NRf>
1 to 100
*RCL 50
Reset Command
This command forces an ABORt, *CLS, LOAD:PROT:CLE
command.
*RST
None
Save Command
This command stores the present state of electronic load in a
specified location in memory.
*SAV <NRf>
1 to 100
*SAV 50
Service Request Enable Command/Query
This command sets the condition of the Service Request Enable
register to determine which event of the Status Byte register (see
*STB) is allowed to set the MSS (Master Status Summary) bit. A
"1" in the bit position enabled by bits is logically ORed to cause Bit 6
(the Master Summary Status Bit) of the Status Byte register to be set.
See details regarding the Status Byte register in Chapter 8 Status
Reporting.
*SRE <NRf>
0 to 255
*SRE 24 Enable the QUES and MAV bit of the Service Request
Enable
*SRE?
<NR1>
*SRE?
Return the current setting for "Service Request Enable".
Read Status Byte Query
This query reads the Status Byte register. Note that the MSS
(Master Summary Status) bit is returned in Bit 6 instead of RQS bit.
This bit indicates if the electronic load has at least one reason for
requesting service. *STB? does not clear the Status Byte register.
It is cleared only when subsequent action has cleared all bits set.
Refer to Chapter 8 Status Reporting for more information about this
register.
7-3
High Power DC Electronic Load 63200 Series Operation & Programming Manual
Bit Configuration of Standard Byte Register
7
6
5
4
3
2
1
0
Bit Position
MSS
ESB
MAV QUES
0
0
0
0
Bit Name
RQS
128
64
32
16
8
4
2
1
Bit Weight
MSS = master status summary
ESB = event status byte summary
RQS = request for service
QUES = questionable status summary
MAV = message available
Query Syntax
Return Parameter
Query Example
Return Example
7.2
*STB?
<NR1>
*STB?
24
Return the contents of "Status Byte".
Specific Commands
The 63200 series products are built-in with the following specific GPIB commands.
7-4
Language Dictionary
7.2.1 CONFigure Sub-system
CONFigure
:AUTO
:LOAD
:MODE
:DISPlay
:KEY
:REMote
:SAVE
:SOUNd
:VOLTage
:LATCh
:RESet
:ON
:POLarity
:RANGe
:PROTection
:BATT
:VOLT
:Capacity
:TIME
:CROFFSET
CONFigure:AUTO:LOAD
Description Set if the load module will do Auto Load On during power-on.
Syntax CONFigure:AUTO:LOAD <NR1 | CHAR>
Parameter 0 | OFF, 1 | ON
Example CONF:AUTO:LOAD ON
Start Auto Load On during power on.
CONF:AUTO:LOAD OFF Close Auto Load On during power on.
Query Syntax CONFigure:AUTO:LOAD?
Return Parameter 0 | 1
Query Example CONF: AUTO: LOAD?
Return Example 0 (OFF)
Return the status of Auto Load On
CONFigure:AUTO:MODE
Description Set type of Auto Load On as LOAD ON or PROGRAM ON.
Syntax CONFigure:AUTO:MODE <NR1 | CHAR>
Parameter 0 | PROGRAM, 1 | LOAD
Example
CONF:AUTO:MODE LOAD
Set Auto Load On as general
Load On.
CONF:AUTO:MODE PROGRAM Set Auto Load On as Program
On.
Query Syntax CONFigure:AUTO:MODE?
Return Parameter 0 | 1
Query Example CONF:AUTO:MODE?
Return the execution type of Auto
Load On.
Return Example 0 ( PROGRAM)
7-5
High Power DC Electronic Load 63200 Series Operation & Programming Manual
CONFigure:DISPlay
Description
Command Syntax
Parameter
Example
Query Syntax
Return Parameter
Query Example
Return Example
CONFigure:KEY
Description
Command Syntax
Parameter
Example
Query Syntax
Return Parameter
Query Example
Return Example
Set measure display mode
CONFigure:DISPlay <NR1 | CHAR>
0 | RESISTANCE, 1 | POWER
CONF:DISP POWER
Set the power display mode.
CONF:DISP 0
Set resistance display mode.
CONFigure:DISPlay?
0|1
CONF:DISP?
Return the execution type of display mode.
1 (POWER)
Set enter data key mode
CONFigure:KEY <NR1 | CHAR>
0 | HOLD, 1 | NEXT
CONF:KEY 1
Set enter data next mode.
CONF:KEY HOLD Set enter data hold mode.
CONFigure:KEY?
0|1
CONF:KEY?
Return the execution type to enter data mode.
1 ( NEXT )
CONFigure:REMote
Description
Syntax
Parameter
Example
Set the status of remote control (only effective in RS-232C).
CONFigure:REMote <NR1 | CHAR>
0 | OFF, 1 | ON
CONF:REM ON
Set to remote control.
CONFigure:SAVE
Description
Syntax
Parameter
Example
Save the setting of CONFigure for next power-on use.
CONFigure:SAVE
None
CONF:SAVE
CONFigure:SOUNd
Description
Syntax
Parameter
Example
Query Syntax
Return Parameter
Query Example
Return Example
Set the buzzer sound ON/OFF.
CONFigure:SOUNd <NR1 | CHAR>
0 | OFF, 1 | ON
CONF:SOUN 0
CONF:SOUN OFF
CONFigure:SOUNd?
0|1
CONF:SOUN? Return the control status of the buzzer sound.
0 (OFF )
CONFigure:VOLTage:LATCh
Description Set the action type to Von.
Syntax CONFigure:VOLTage:LATCh <NR1 | CHAR>
Parameter 0 | OFF, 1 | ON
Example CONF:VOLT:LATC 1
Set the action type to Von as Latch.
CONF:VOLT:LATC OFF
Set the action type to Von as Non
Latch (Refer to the former part of this
manual for detailed).
Query Syntax CONFigure:VOLTage:LATCh?
7-6
Language Dictionary
Return Parameter
Query Example
Return Example
0|1
CONF:VOLT: LATC?
0 (OFF)
Return the action type to Von.
CONFigure:VOLTage:LATCh:RESet
Description Reset Von signal.
Syntax CONFigure:VOLTage:LATCh:RESet
Parameter None
Example CONF:VOLT:LATC:RES
CONFigure:VOLTage:ON
Description Set the voltage of loading current to on.
Syntax CONFigure:VOLTage:ON <NRf> [suffix]
Parameter For valid voltage range refer to respective specification.
Example CONF:VOLT:ON 1
Set Von=1V.
CONF:VOLT:ON 300mV
Set Von=300mV.
Query Syntax CONFigure:VOLTage:ON?
Return Parameter <NR2> [Unit=Voltage]
Query Example CONF:VOLT:ON?
Return the setting of Von value.
Return Example 3.5
CONFigure:VOLTage:POLarity
Description Set the voltage display polarity.
Syntax CONFigure:VOLTage:POLarity <NR1 | CHAR>
Parameter 0 | MINUS, 1 | PLUS,
Example CONF:VOLT:POL 0
Set voltage display to minus.
CONF:VOLT:POL PLUS
Set voltage display to plus.
Query Syntax CONFigure:VOLTage:POLarity?
Return Parameter 0 | 1
Query Example CONF:VOLT:POL?
Return the display polarity.
Return Example 0 ( MINUS )
CONFigure:VOLTage:RANGe
Description Set voltage measurement range in CC mode.
Syntax CONFigure:VOLTage:RANGe <NR1 | CHAR>
Parameter 0 | L, 1 | H
Example CONF:VOLT:RANG 1
Set full-range to High.
CONF:VOLT:RANG L
Set full-range to Low.
Query Syntax CONFigure:VOLTage:RANGe?
Return Parameter 0 | 1
Query Example CONF:VOLT:RANG?
Return Voltage range.
Return Example 1 ( H )
CONFigure:VOLTage:PROTection
Description Set Load On protection.
Syntax CONFigure:VOLTage:PROTection <NR1 | CHAR>
Parameter 0 | OFF, 1 | ON
Example CONF:VOLT:PROT 1
Enable Load On protection.
CONF:VOLT:PROT OFF
Disable Load On protection.
Query Syntax CONFigure:VOLTage:PROTection?
Return Parameter 0 | 1
Query Example CONF:VOLT:PROT?
Return Load On protection.
Return Example 1 ( ON )
7-7
High Power DC Electronic Load 63200 Series Operation & Programming Manual
CONFigure:BATT
Description
Syntax
Parameter
Example
Query Syntax
Return Parameter
Query Example
Return Example
Set the battery discharge measurement.
CONFigure:BATT <NR1 | CHAR>
0 | OFF, 1 | ON
CONF:BATT 1
Enable battery discharge.
CONF:BATT OFF
Disable battery discharge.
CONFigure:BATT?
0|1
CONF:BATT?
Return battery discharge state.
1 ( ON )
CONFigure:BATT:VOLT
Description Set the end voltage for battery discharge.
Syntax CONFigure:BATT:VOLT <NRf> [suffix]
Parameter For valid voltage range refer to respective specification.
Example CONF:BATT:VOLT 1
Set end voltage =1V.
CONF:BATT:VOLT 500mV
Set end voltage =500mV.
Query Syntax CONFigure:BATT:VOLT?
Return Parameter <NR2> [Unit=Voltage]
Query Example CONF:BATT:VOLT?
Return the end voltage of battery
discharge.
Return Example 2.5
CONFigure:BATT:Capacity?
Description Query the battery capacity when doing battery discharge.
Query Syntax CONFigure:BATT:Capacity?
Return Parameter <NR2> [Unit=Ah]
Query Example CONF:BATT:Capacity?
Return the battery capacity.
Return Example 2.5
CONFigure:BATT:TIME?
Description Query the battery discharge duration.
Query Syntax CONFigure:BATT:TIME?
Return Parameter <NR2> [Unit=Second]
Query Example CONF:BATT:TIME?
Return the battery discharge duration.
Return Example 3
CONFigure:CROFFSET
Description Set compensation mechanism in CR mode.
Syntax CONFigure:CROFFSET <NR1 | CHAR>
Parameter 0 | OFF, 1 | ON
Example CONF:CROFFSET 1
Enable CR compensation.
CONF:CROFFSET OFF
Disable CR compensation.
Query Syntax CONFigure:CROFFSET?
Return Parameter 0 | 1
Query Example CONF:CROFFSET?
Return CR compensation state.
Return Example 1 ( ON )
7-8
Language Dictionary
7.2.2 COMMunicate Sub-system
COMMunicate
:ADDRess
:GPIB
:RS485
:SERial
:BAUD
:BITS
:PARity
:SBITs
COMMunicate:ADDRess:GPIB
Description Set the GPIB address
Syntax COMMunicate:ADDRess:GPIB <NR1>
Parameter 1 – 30
Example COMM:ADDR:GPIB 16
Query Syntax COMMunicate:ADDRess:GPIB?
Return Parameter <NR1>
Query Example COMM:ADDR:GPIB?
Return GPIB address.
Return Example 16
COMMunicate:ADDRess:RS485
Description Set the RS485 address
Syntax COMMunicate:ADDRess:RS485 <NR1>
Parameter 1 – 5
Example COMM:ADDR:RS485 5
Query Syntax COMMunicate:ADDRess:RS485?
Return Parameter <NR1>
Query Example COMM:ADDR:RS485?
Return RS485 address.
Return Example 5
COMMunicate:SERial:BAUD
Description Set the baud rate
Syntax COMMunicate:SERial:BAUD <NR1 | CHAR>
Parameter 0 | BAUD_48, 1 | BAUD_96, 2 | BAUD_192,
3 | BAUD_384, 4 | BAUD_576, 5 | BAUD_1152
Example COMM: SER:BAUD 5
COMM: SER:BAUD BAUD_1152
Query Syntax COMMunicate:SERial:BAUD?
Return Parameter 0 | 1 | 2 | 3 | 4 | 5
Query Example COMM:SER:BAUD?
Return RS-232C baud rate.
Return Example 5 ( BAUD_1152 )
COMMunicate:SERial:BITS
Description Set the number of the data bits
Syntax COMMunicate:SERial:BITS
Parameter 0 | BITS_8, 1 | BITS_7 <NR1 | CHAR>
Example COMM: SER:BITS 0
COMM: SER:BITS BITS_8
Query Syntax COMMunicate:SERial:BITS?
Return Parameter 0 | 1
Query Example COMM:SER:BITS?
Return RS-232C data bits parameter.
7-9
High Power DC Electronic Load 63200 Series Operation & Programming Manual
Return Example
0 ( BITS_8)
COMMunicate:SERial:PARity
Description Set the parity scheme that is to be used for transmission
Syntax COMMunicate:SERial:PARity <NR1 | CHAR>
Parameter 0 | NONE, 1 | EVEN, 2 | ODD
Example COMM: SER:PAR 0
COMM: SER:PAR NONE
Query Syntax COMMunicate:SERial:PARity?
Return Parameter 0 | 1 | 2
Query Example COMM:SER:PAR?
Return the parity of RS-232C
Return Example 0 ( NONE )
COMMunicate:SERial:SBITs
Description Set the number of the stop bits
Syntax COMMunicate:SERial:SBITs <NR1 | CHAR>
Parameter 0 | SBITS_2, 1 | SBITS_1
Example COMM: SER:SBITS 0
COMM: SER:SBIT SBITS_2
Query Syntax COMMunicate:SERial:SBITs?
Return Parameter 0 | 1
Query Example COMM:SER:SBIT?
Return RS-232C stop bits parameter.
Return Example 0
7-10
Language Dictionary
7.2.3 CURRENT Sub-system
CURRent
:STATic
:L1
:L2
:RISE
:FALL
:DYNamic
:L1
:L2
:RISE
:FALL
:T1
:T2
CURRent:STATic
Description
Syntax
Parameter
Example
Set A or B Static in CC mode for load.
CURRent:STATic <NR1 | CHAR>
0 | B, 1 | A
CURR:STAT 0
Set CC Mode to Static B.
CURR:STAT A
Set CC Mode to Static A.
CURRent:STATic:L1/L2
Description Set Static Load Current to constant current mode.
Syntax CURRent:STATic:L1 <NRf+>[suffix]
CURRent:STATic:L2 <NRf+>[suffix]
Parameter For valid value range refer to respective specification.
Example CURR:STAT:L1 20
Set Constant Current = 20A for Static Load
L1.
CURR:STAT:L2 10
Set Constant Current = 10A for Static Load
L2.
CURR:STAT:L1 MAX
Set Constant Current = maximum value for
Static Load L1.
CURR:STAT:L2 MIN
Set Constant Current = minimum value for
Static Load L2.
Query Syntax CURRent:STATic:L1?
CURRent:STATic:L2?
CURRent:STATic:L1? MAX
CURRent:STATic:L2? MIN
Return Parameter <NR2> [Unit=Ampere]
Query Example CURR:STAT:L1?
Return the set current value of Static Load
L1.
Return Example 3.12
7-11
High Power DC Electronic Load 63200 Series Operation & Programming Manual
CURRent:STATic:RISE/FALL
Description Set the current slew rate for constant current static mode.
Syntax CURRent:STATic:RISE <NRf+>[suffix]
CURRent:STATic:FALL <NRf+>[suffix]
Parameter For valid value range refer to respective specification.
Example CURR:STAT:RISE 2.5
Set rise slew rate to 2.5A/μs for static
load.
CURR:STAT:FALL 1A/μs
Set fall slew rate to 1A/μs for static
load.
Query Syntax CURRent:STATic:RISE?
CURRent:STATic:FALL?
CURRent:STATic:RISE? MAX
CURRent:STATic:FALL? MIN
Return Parameter <NR2> [Unit=A/μS]
Query Example CURR:STAT:RISE?
Return the rise slew rate of static load.
Return Example 2.5
CURRent:DYNamic:L1/L2
Description Set Dynamic Load Current during constant current mode.
Syntax CURRent:DYNamic:L1 <NRf+>[suffix]
CURRent:DYNamic:L2 <NRf+>[suffix]
Parameter For valid value range refer to respective specification.
Example CURR:DYN:L1 20
Set dynamic load parameter L1 = 20A.
CURR:DYN:L2 10
Set dynamic load parameter L2 = 10A.
CURR:DYN:L1 MAX
Set dynamic load parameter L1 = max.
value
CURR:DYN:L2 MIN
Set dynamic load parameter L2 = min.
value.
Query Syntax CURRent:DYNamic:L1?
CURRent:DYNamic:L2?
CURRent:DYNamic:L1? MAX
CURRent:DYNamic:L2? MIN
Return Parameter <NR2> [Unit=Ampere]
Query Example CURR:DYN:L1?
Return the setting current in dynamic load
L1.
Return Example 35.6
CURRent:DYNamic:RISE/FALL
Description Set current slew rate of constant current dynamic mode.
Syntax CURRent:DYNamic:RISE <NRf+>[suffix]
CURRent:DYNamic:FALL <NRf+>[suffix]
Parameter For valid value range refer to respective specification.
Example CURR:DYN:RISE 2.5
Set rise slew rate to 2.5A/μs.
CURR:DYN:FALL 1A/μs
Set fall slew rate to 1A/μs.
CURR:DYN:RISE MAX
Set rise slew rate to the maximum value
of dynamic load.
CURR:DYN:FALL MIN
Set fall slew rate to the minimum value
of dynamic load.
Query Syntax CURRent:DYNamic:RISE?
CURRent:DYNamic:FALL?
CURRent:DYNamic:RISE? MAX
CURRent:DYNamic:FALL? MIN
Return Parameter <NR2> [Unit=A/μs]
7-12
Language Dictionary
Query Example
Return Example
CURR:DYN:RISE?
2.5
Return the rise slew rate of dynamic load.
CURRent:DYNamic:T1/T2
Description Set the duration parameter T1 or T2 for dynamic load.
Syntax CURRent:DYNamic:T1 <NRf+>[suffix]
CURRent:DYNamic:T2 <NRf+>[suffix]
Parameter For valid value range refer to respective specification.
Example CURR:DYN:T1 10ms
Set dynamic duration T1 = 10ms.
CURR:DYN:T2 2s
Set dynamic duration T2 = 2s.
CURR:DYN:T1 MAX
Set dynamic duration T1 to the maximum
value.
CURR:DYN:T2 MIN
Set dynamic duration T2 to the minimum
value.
Query Syntax CURRent:DYNamic:T1?
CURRent:DYNamic:T2?
CURRent:DYNamic:T1? MAX
CURRent:DYNamic:T2? MIN
Return Parameter <NR2> [Unit=Sec]
Query Example CURR:DYN:T1?
Return the dynamic duration parameter T1.
Return Example 0.15
7-13
High Power DC Electronic Load 63200 Series Operation & Programming Manual
7.2.4 FETCh Sub-system
FETCh
:CURRent
:POWer
:RESistance
:VOLTAGE
:STATus
FETCh:CURRent?
Description
Query Syntax
Return Parameter
Query Example
Return Example
Return the current measured at the input of the load.
FETCh:CURRent?
<NR2> [Unit=Ampere]
FETC:CURR?
3.15
FETCh:POWer?
Description
Query Syntax
Return Parameter
Query Example
Return Example
Return the power measured at the input of the load.
FETCh:POWer?
<NR2> [Unit=Watt]
FETC:POW?
3.15
FETCh:RESistance?
Description
Query Syntax
Return Parameter
Query Example
Return Example
Return the resistance measured at the input of the load
FETCh:RESistance?
<NR2> [Unit=OHM]
FETC:RSE?
10.22
FETCh:VOLTage?
Description
Query Syntax
Return Parameter
Query Example
Return Example
Return the voltage measured at the input of the load.
FETCh:VOLTage?
<NR2> [Unit=Voltage]
FETC:VOLT?
8.12
FETCh:STATus?
Description
Query Syntax
Return Parameter
Return the load state.
FETCh:STATus?
<NR1>
Bit Position
Condition
Bit Weight
15
╳
╳
14
PR
16384
13
RS
8192
12
FF
4096
11
╳
╳
10
╳
╳
9
╳
╳
8
SP
256
Bit Position
Condition
Bit Weight
7
PF
128
6
ST
64
5
LD
32
4
OT
16
3
RV
8
2
OP
4
1
OV
2
0
OC
1
Query Example
Return Example
7-14
FETC:STAT?
4
Read back the present status of the load.
Language Dictionary
7.2.5 LOAD Sub-system
LOAD
[:STATe]
:SHORt
[:STATe]
:KEY
:PROTection
:CLEar
:SAVE
LOAD[:STATe]
Description The LOAD command makes the electronic load active on or off.
Syntax LOAD:[STATe] <NR1 | CHAR >
Parameter 0 | OFF, 1 | ON
Example LOAD ON
Activate the electronic load.
LOAD OFF
Inactivate the electronic load.
Query Syntax LOAD:[STATe]?
Return Parameter 0 | 1
Query Example LOAD?
Return if the electronic load is active.
Return Example 1 (ON)
LOAD:SHORt[:STATe]
Description Activate or inactivate short-circuited simulation.
Syntax LOAD:SHORt[:STATe] <NR1 | CHAR >
Example LOAD:SHOR 1
Enable short-circuited simulation.
LOAD:SHOR OFF
Disable short-circuited simulation.
Parameter 0 | OFF, 1 | ON
Query Syntax LOAD:SHORt:[STATe]?
Return Parameter 0 | 1
Query Example LOAD:SHOR?
Return the short-circuit simulation state.
Return Example 1 (ON)
LOAD:SHORt:KEY
Description
Syntax
Parameter
Example
Query Syntax
Return Parameter
Query Example
Return Example
Set the short key mode in the electronic load.
LOAD:SHORt:KEY <NR1 | CHAR >
0 | HOLD, 1 | TOGGLE
LOAD:SHOR:KEY TOGGLE Set short key mode to Toggle.
LOAD:SHOR:KEY 0
Set short key mode to Hold.
LOAD:SHORt:KEY?
0|1
LOAD:SHOR:KEY?
Return the short key mode in the
electronic load.
1 (TOGGLE)
7-15
High Power DC Electronic Load 63200 Series Operation & Programming Manual
LOAD:PROTection?
Description
Query Syntax
Return Parameter
This command returns the status of the electronic load.
LOAD:PROTection?
<NR1>
Bit Position 15 14 13 12 11 10
0 0 0 0 0 0
Condition
Bit Weight
9
0
Query Example
Return Example
Return the status of the electronic load.
LOAD:PROT?
0
8
0
7
0
6
0
5 4 3 2 1 0
0 OT RV OP OV OC
16 8 4 2 1
LOAD:PROTection:CLEar
Description This command resets status of the electronic load.
Syntax LOAD:PROTection:CLEar
Parameter For valid value range refer to respective specification.
Example LOAD:PROT:CLE
LOAD:SAVE
Description
Syntax
Parameter
Example
7-16
This command saves the present state of electronic load as default.
LOAD:SAVE
None
LOAD:SAVE
Language Dictionary
7.2.6 MEASure Sub-system
MEASure
:CURRent
:INPut
:POWer
:RESistance
:STATus
:VOLTage
MEASure:CURRent?
Description
Query Syntax
Return Parameter
Query Example
Return Example
MEASure:INPut
Description
Syntax
Parameter
Example
Query Syntax
Return Parameter
Query Example
Return Example
Return the real time current measured at the input of the electronic
load.
MEASure:CURRent?
<NR2> [Unit=Ampere]
MEAS:CURR?
3.15
Select the input port of the electronic load to measure voltage.
MEASure:INPut <NR1 | CHAR>
0 | LOAD, 1 | UUT
MEAS:INP UUT
MEAS:INP LOAD
MEASure:INPut?
Return the input port that has been set.
0|1
MEAS:INP?
0 (LOAD)
MEASure:RESistance?
Description Return the real time resistance measured at the input of the
electronic load.
Query Syntax MEASure:RESistance?
Return Parameter <NR2> [Unit=OHM]
Query Example MEAS:RES?
Return Example 8.12
MEASure:STATus?
Description
Query Syntax
Return Parameter
Return the real time state of DC Load.
MEASure:STATus?
<NR1>
Bit Position
Condition
Bit Weight
15
╳
╳
14
PR
16384
13
RS
8192
12
FF
4096
11
╳
╳
10
╳
╳
9
╳
╳
8
SP
256
Bit Position
Condition
Bit Weight
7
PF
128
6
ST
64
5
LD
32
4
OT
16
3
RV
8
2
OP
4
1
OV
2
0
OC
1
Query Example
Return Example
MEAS:STAT?
4
Return the real time state of load.
7-17
High Power DC Electronic Load 63200 Series Operation & Programming Manual
MEASure:POWer?
Description
Query Syntax
Return Parameter
Query Example
Return Example
MEASure:VOLTage?
Description
Query Syntax
Return Parameter
Query Example
Return Example
7-18
Return the real time power measured at the input of the electronic
load.
MEASure:POWer?
<NR2> [Unit=Watt]
MEAS:POW?
8.12
Return the real time voltage measured at the input of the electronic
load.
MEASure:VOLTage?
<NR2> [Unit=Voltage]
MEAS:VOLT?
8.12
Language Dictionary
7.2.7 MODE Sub-system
MODE
MODE
Description
Syntax
Parameter
Example
Query Syntax
Return Parameter
Query Example
Return Example
This command sets operational modes of the electronic load.
MODE <NR1 | CHAR>
0 | CCL, 1 | CCH, 2 | CCDL, 3 | CCDH, 4 | CRL, 5 | CRH,
6 | CVL, 7 | CVH, 8 | CPL, 9 | CPH, 10 | CCEL, 11 | CCEH.
MODE CPL
Set CP mode to low range
MODE 5
Set CR mode to high range
MODE?
Return the operational mode of the
electronic load.
<NR1>
MODE?
1 (CCH)
7-19
High Power DC Electronic Load 63200 Series Operation & Programming Manual
7.2.8 POWer Sub-system
POWer
:L1
:L2
:RISE
:FALL
POWer
Description
Syntax
Parameter
Example
POWer:L1/L2
Description
Syntax
Parameter
Example
Query Syntax
Return Parameter
Query Example
Return Example
POWer:RISE/FALL
Description
Syntax
Parameter
Example
Query Syntax
Return Parameter
Query Example
Return Example
7-20
Set A or B Static in CP mode for load.
POWer <NR1 | CHAR>
0 | B, 1 | A
POW 0
Set CP mode to Static B.
Set the Static Load Current of constant power mode.
POWer: L1 <NRf+>[suffix]
POWer: L1 <NRf+>[suffix]
For valid value range refer to respective specification.
POW:L1 20
Set Constant Power = 20W for Static Load L1.
POW:L2 10
Set Constant Power = 10W for Static Load L2.
POW:L1 MAX Set Constant Power = max. value for Static Load
L1.
POW:L2 MIN
Set Constant Power = min. value for Static Load
L2.
POWer:L1?
POWer:L2?
POWer:L1? MAX
POWer:L2? MIN
<NR2> [Unit=Watt]
POW:L1? Return the set power of Static Load L1.
3.12
Set current slew rate of constant power static mode.
POWer:RISE <NRf+>[suffix]
POWer:FALL <NRf+>[suffix]
For valid value range refer to respective specification.
POW:RISE 2.5
Set rise slew rate to 2.5A/μs for static load.
POW:FALL 1A/μs
Set fall slew rate to 1A/μs for static load.
POWer:RISE?
POWer:FALL?
POWer:RISE? MAX
POWer:FALL? MIN
<NR2> [Unit=A/μs]
POW:RISE?
Return the rise slew rate of static load.
2.5
Language Dictionary
7.2.9 PROGram Sub-system
PROGram
:CHAin
:FILE
:KEY
:ONTime
:OFFTime
:PF
:DELay
:TIME
:RUN
:SAVE
:SEQuence
:MODE
:SHORt
:DELay
:TIME
PROGram:CHAin
Description
Syntax
Parameter
Example
Query Syntax
Return Parameter
Query Example
Return Example
Set the type of program file in serial execution.
PROGram:CHAin <NRf>
0 to 10 (0 does not chain.)
PROG:CHA 7
PROGram:CHAin?
<NR1>
PROG:CHA?
7
PROGram:FILE
Description
Syntax
Parameter
Example
Query Syntax
Return Parameter
Query Example
Return Example
Set the program number.
PROGram:FILE <NRf>
1 to 10
PROG:FILE 10
PROGram:FILE?
Return the active program number.
<NR1>
PROG:FILE?
10
PROGram:KEY
Description
Syntax
Parameter
Example
Set the next step of program manual sequence
PROGram:KEY <CHAR>
K0~K9 | KU KD
PROG:KEY KD
PROGram:ONTime
Description
Syntax
Parameter
Example
Query Syntax
Return Parameter
Set the load on time of program file.
PROGram:ONTime <NRf>[suffix]
0~30 Sec
PROG:ONT 10
PROG:ONT 100ms
PROGram:ONTime?
<NR2> [Unit=Sec]
7-21
High Power DC Electronic Load 63200 Series Operation & Programming Manual
Query Example
Return Example
PROGram:OFFTime
Description
Syntax
Parameter
Example
Query Syntax
Return Parameter
Query Example
Return Example
PROGram:PF:DELay
Description
Syntax
Parameter
Example
Query Syntax
Return Parameter
Query Example
Return Example
PROGram:PF:TIME
Description
Syntax
Parameter
Example
Query Syntax
Return Parameter
Query Example
Return Example
PROGram:RUN
Description
Syntax
Parameter
Example
Query Syntax
Return Parameter
Query Example
Return Example
PROGram:SAVE
Description
Syntax
Parameter
Example
PROGram:SEQuence
Description
7-22
PROG:ONT?
10
Set the load off time of program file
PROGram:OFFTime <NRf>[suffix]
0~30 Sec
PROG:OFFT 20
PROG:OFFT 200ms
PROGram:OFFTime?
<NR2> [Unit=Sec]
PROG:OFFT?
0.2
Set the pass/fail measurement delay time of program file.
PROGram:PF:DELay <NRf>[suffix]
0~60 Sec
PROG:PF:DELay 20
PROG:PF:DELay 200ms
PROGram:PF:DELay?
<NR2> [Unit=Sec]
PROG:PF:DEL?
0.2
Set the pass/fail measurement time of program file
PROGram:PF:TIME <NRf>[suffix]
0~60 Sec
PROG:PF:TIME 20
PROG:PF:TIME 200ms
PROGram:PF:TIME?
<NR2> [Unit=Sec]
PROG:PF:TIME?
0.2
Execute the program run according to the set program file.
PROGram:RUN <NR1 | CHAR>
0 | OFF, 1 | ON
PROG:RUN ON
PROG:RUN 0
PROGram:RUN?
0|1
PROG:RUN?
0 (OFF)
Save the program setting.
PROGram:SAVE
NONE
PROG:SAVE
Set the program file sequence.
Language Dictionary
Syntax
Parameter
Example
Query Syntax
Return Parameter
Query Example
Return Example
PROGram:SEQuence <NRf>
1 to 10
PROG:SEQ 3
PROGram:SEQuence?
<NR1>
PROG:SEQ?
3
PROGram:SEQuence:MODE
Description Set the sequence type.
Syntax PROGram:SEQuence:MODE <NR1 | CHAR>
Parameter 0 | SKIP, 1 | AUTO , 2 | MANUAL
Example PROG:SEQ:MODE SKIP
PROG:SEQ:MODE AUTO
PROG:SEQ:MODE MANUAL
Query Syntax PROGram:SEQuence:MODE?
Return Parameter 0 | 1 | 2
Query Example PROG:SEQ:MODE?
Return Example 1
PROGram:SEQuence:SHORt:DELay
Description Set the short on delay time of program file.
Syntax PROGram:SEQuence:SHORt:DELay <NRf>[suffix]
Parameter 0~60 Sec
Example PROG:SEQ:SHOR:DELay 20
PROG:SEQ:SHOR:DELay 100ms
Query Syntax PROGram:SEQuence:SHORt:DELay?
Return Parameter <NR2> [Unit=Sec]
Query Example PROG:SEQ:SHOR:DEL?
Return Example 0.1
PROGram:SEQuence:SHORt:TIME
Description Set the program file short on time.
Syntax PROGram:SEQuence:SHORt:TIME <NRf>[suffix]
Parameter 0~60 Sec
Example PROG:SEQ:SHOR:TIME 20
PROG:SEQ:SHOR:TIME 200ms
Query Syntax PROGram:SEQuence:SHORt:TIME?
Return Parameter <NR2> [Unit=Sec]
Query Example PROG:SEQ:SHOR:TIME?
Return Example 0.2
7-23
High Power DC Electronic Load 63200 Series Operation & Programming Manual
7.2.10 RESistance Sub-system
RESistance
:L1
:L2
:RISE
:FALL
RESistance
Description
Syntax
Parameter
Example
RESistance:L1/L2
Description
Syntax
Parameter
Example
Query Syntax
Return Parameter
Query Example
Return Example
Set A or B Static in CR mode for load.
RESistance <NR1 | CHAR>
0 | B, 1 | A
RES 0
Set CR mode to Static B.
Set the static resistance level for constant resistance mode.
RESistance:L1 <NRf+>[suffix]
RESistance:L2 <NRf+>[suffix]
For valid value range refer to respective specification.
RES:L1 20 OHM
Set constant resistance = 20 ohm for Load L1.
RES:L2 10 OHM
Set constant resistance = 10 ohm for Load L2
RES:L1 MAX
Set constant resistance = max.L1 value for
Load L1.
RES:L2 MIN
Set constant resistance = min. L2 value for
Load L2.
RESistance:L1?
RESistance:L2?
RESistance:L1? MAX
RESistance:L2? MIN
<NR2> [Unit=OHM]
RES:L1?
Return the set resistance value of Load L1
10
RESistance:RISE/FALL
Description Set resistive slew rate of constant resistance.
Syntax RESistance:RISE <NRf+>[suffix]
RESistance:FALL <NRf+>[suffix]
Parameter For valid value range refer to respective specification.
Example RES:RISE 2.5
Set CR rise slew rate to 2.5A/μs.
RES:FALL 1A/μs
Set CR fall slew rate to 1A/μs.
RES:RISE MAX
Set CR rise slew rate to the max.
programmable value.
RES:FALL MIN
Set CR fall slew rate to the min. programmable
value.
Query Syntax RESistance:RISE?
RESistance:FALL?
RESistance:RISE? MAX
RESistance:FALL? MIN
Return Parameter <NR2> [Unit=OHM]
Query Example RES:RISE?
Return the CR rise slew rate.
Return Example 2.5
7-24
Language Dictionary
7.2.11 SPECification Sub-system
SPECification
:C
:L
:H
[:PASS]
:TEST
:UNIT
SPECification:C/L/H
Description
Syntax
Parameter
Example
Query Syntax
Query Example
Return Parameter
Return Example
Set the voltage (CC, CR, CP mode) or current (CV mode)
specification.
SPECification:H
SPECification:L
SPECification:C
For valid value range refer to respective specification.
SPEC:H <NRf+>[suffix]
SPEC:L <NRf+>[suffix]
SPEC:C <NRf+>[suffix]
SPECification:H?
SPECification:L?
SPECification:C?
SPEC:H?
<NR2> [CC,CR,CP mode Unit=Voltage], [CV mode Unit=Current]
4.75
SPECification[:PASS]?
Description Request to refer all channels specifications for GO-NG result.
Query Syntax SPECification?
Query Example SPEC?
Return all channels GO-NG result.
Return Parameter 0 | 1
Return Example 0 (NG), 1 (GO)
SPECification:TEST
Description
Syntax
Parameter
Example
Query Syntax
Query Example
Return Parameter
Return Example
SPECification:UNIT
Description
Syntax
Parameter
Example
Query Syntax
Query Example
Start or close the specification test.
SPECification:TEST <NR1 | CHAR>
0 | OFF, 1 | ON
SPEC: TEST 1
SPEC: TEST OFF
SPECification:TEST?
SPEC:TEST?
0|1
1 (ON)
Set the specific entry mode.
SPECification:UNIT <NR1 | CHAR>
0 | PERCENT, 1 | VALUE,
SPEC:UNIT 1
SPEC: UNIT PERCENT
SPECification:UNIT?
SPEC:UNIT?
7-25
High Power DC Electronic Load 63200 Series Operation & Programming Manual
Return Parameter
Return Example
7-26
0|1
0 (PERCENT)
Language Dictionary
7.2.12 STATus Sub-system
STATus
:QUEStionable
:CONDition
:ENABle
[:EVENt]
:NTRansition
:PTRansition
STATus:QUEStionable:CONDition
Description Real-time ("live") recording for Questionable data
Query Syntax STATus:QUEStionable:CONDition?
Return Parameter <NR1>
Query Example STAT:QUES:COND?
Return the channel status.
Return Example 6
STATus:QUEStionable:ENABle
Description Mask the bits in the Event register that are allowed to be summed
into the QUES bit of the Status Byte register.
Syntax STATus:QUEStionable:ENABle
Parameter
Bit Configuration of Questionable Status Register
Bit Position 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Condition 0 0 0 0 0 0 0 0 0 0 0 OT RV OP OV OC
16 8 4 2 1
Bit Weight
Example
Query Syntax
Return Parameter
Query Example
Return Example
STAT:QUES:ENAB 24
STATus:QUEStionable:ENABle?
<NR1>
STAT:QUES:ENAB
Return the setting of the Status
Questionable Enable register.
24
STATus:QUEStionable[:EVENt]?
Description Record all Questionable conditions that have occurred since last
time the register was read.
Query Syntax STATus:QUEStionable:EVENt?
Return Parameter <NR1>
Query Example STAT:QUES:EVEN?
Return the contents of the Questionable
Event register.
Return Example 24
STATus:QUEStionable:PTRansition/NTRansition
Description Programmable filters determine what type of transition (0-to-1 or
1-to-0) in the Condition register will set the corresponding bit of the
Event register.
Syntax STATus:QUEStionable:PTRansition <NRf>
STATus:QUEStionable:NTRansition <NRf>
Parameter 0 ~ 65535
Example STAT:QUES:PTR 4
Set OP(over power bit 2) to 0-to-1.
7-27
High Power DC Electronic Load 63200 Series Operation & Programming Manual
Query Syntax
Return Parameter
Query Example
Return Example
7-28
STAT:QUES:NTR 4
Set OP(over power bit 2) to 1-to-0.
STATus:QUEStionable:PTRansition?
STATus:QUEStionable:NTRansition?
<NR1>
STAT:QUES:PTR?
Return the setting on the QUEStionable
Ptransition/Ntransition.
4
Language Dictionary
7.2.13 VOLTage Sub-system
VOLTage
:CURRent
:L1
:L2
:MODE
VOLTage
Description
Syntax
Parameter
Example
VOLTage:CURRent
Description
Syntax
Parameter
Example
Query Syntax
Return Parameter
Query Example
Return Example
VOLTage:L1/L2
Description
Syntax
Parameter
Example
value.
Query Syntax
Return Parameter
Query Example
Return Example
VOLTage:MODE
Description
Syntax
Parameter
Example
Query Syntax
Set A or B Static in CV mode for load.
VOLTage <NR1 | CHAR>
0 | B, 1 | A
VOLT 0
Set CV mode to Static B.
Set the current limit for constant voltage mode.
VOLTage:CURRent <NRf+>[suffix]
For valid value range refer to respective specification.
VOLT:CURR 3
Set loading current limit to 3A during
constant voltage mode.
VOLT:CURR MAX
Set loading current limit to the max. value
during constant voltage mode.
VOLT:CURR MIN
Set loading current limit to the min. value
during constant voltage mode.
VOLTage:CURRent?
<NR2> [Unit=Ampere]
VOLT:CURR?
3
Set voltage of static load during constant voltage mode.
VOLTage:L1 <NRf+>[suffix]
VOLTage:L2 <NRf+>[suffix]
For valid value range refer to respective specification.
VOLT:L1 8V
Set the voltage of load L1 to 8V.
VOLT:L2 24V
Set the voltage of load L2 to 24V.
VOLT:L1 MAX
Set the voltage of load L1 to the max.
VOLT:L2 MIN
Set the voltage of load L2 to the min. value.
VOLTage:L1?
VOLTage:L2?
VOLTage:L1? MAX
VOLT:L2? MIN
<NR2> [Unit=Voltage]
VOLT:L1?
Return the set voltage value of load L1.
0
Set the response speed of CV mode.
VOLTage:MODE <NR1 | CHAR>
0 | SLOW, 1 | FAST
VOLT: MODE 1
VOLT:MODE SLOW
VOLTage:MODE?
7-29
High Power DC Electronic Load 63200 Series Operation & Programming Manual
Return Parameter
Query Example
Return Example
7-30
0|1
VOLT:MODE?
0 (SLOW)
Language Dictionary
7.2.14 SYSTem Sub-system
SYSTem
:WAVE
:PARallel
:DATA
:DISPlay
:MODE
:SLAVe
:CHANnel
:MODEl
SYSTem:WAVE
Description
Syntax
Parameter
Example
Query Syntax
Return Parameter
Query Example
Return Example
Set the waveform source.
SYSTem:WAVE <NR1 | CHAR>
0 | INTERNAL, 1 | EXTERNAL
SYST:WAVE 1
SYST:WAVE INTERNAL
SYSTem:WAVE?
0|1
SYST:WAVE?
0
SYSTem:PARallel:DATA
Description Set for the parallel data transfer.
Syntax SYSTem:PARallel:DATA
Parameter None
SYSTem:PARallel:DISPlay
Description Set parallel mode for measured current display type.
Syntax SYSTem:PARallel:DISPlay <NR1 | CHAR>
Parameter 0 | SOLE, 1 | SUM
Example SYST:PAR:DISP 1
SYST:PAR:DISP SOLE
Query Syntax SYSTem:PARallel:DISPlay?
Return Parameter 0 | 1
Query Example SYST:PAR:DISP?
Return Example 0
SYSTem:PARallel:MODE
Description Set parallel mode.
Syntax SYSTem:PARallel:MODE <NR1 | CHAR>
Parameter 0 | NONE, 1 | MASTER, 2 | SLAVE, 3 | MSTSYNC
Example SYST:PAR:MODE 0
SYST:PAR:MODE SLAVE
Query Syntax SYSTem:PARallel:MODE?
Return Parameter 0 | 1 | 2 | 3
Query Example SYST:PAR:MODE?
Return Example 0
7-31
High Power DC Electronic Load 63200 Series Operation & Programming Manual
SYSTem:PARallel:SLAVe:CHANnel
Description Set parallel mode for slave channel.
Syntax SYSTem:PARallel:SLAVe:CHANnel <NR1>
Parameter 1~5
Example SYST:PAR:SLAV:CHAN 1
Query Syntax SYSTem:PARallel:SLAVe:CHANnel?
Return Parameter <NR1>
Query Example SYST:PAR:SLAV:CHAN?
Return Example 0
SYSTem:PARallel:SLAVe:MODEl
Description Set parallel for slave model.
Syntax SYSTem:PARallel:SLAVe:MODEl <NR1 | CHAR>
Parameter 0 | NONE
1 | M63201,
2 | M63202,
3 | M63203,
4 | M63204,
5 | M63206,
6 | M63208,
7 | M63205,
8 | M63207,
9 | M63209,
10 | M63210
Example SYST:PAR:SLAV:MODE 0
SYST:PAR:SLAV:MODE M63203
Query Syntax SYSTem:PARallel:SLAVe:MODEl?
Return Parameter 0~10
Query Example SYST:PAR:SLAV:MODE?
Return Example 0 (NONE)
7-32
Status Reporting
8.
Status Reporting
8.1
Introduction
This chapter covers the status data structure of Chroma 63200 series electronic load as
shown in Figure 8-1 (on the next page). The standard registers, such as the Event Status
register group, the Output Queue, the Status Byte and Service Request Enable registers
perform standard GPIB functions and are defined in IEEE-488.2 Standard Digital Interface
for Programmable Instrumentation. Other status register groups implement the specific
status reporting requirements for the electronic load.
8.2
■
Register Information in Common
Condition register
The condition register represents the present status of electronic load signals. Reading
the condition register does not change the state of its bits. Only changes in electronic
load conditions affect the contents of this register.
■
PTR/NTR Filter, Event register
The Event register captures changes in conditions corresponding to condition bits in a
condition register, or to a specific condition in the electronic load. An event becomes
true when the associated condition makes one of the following electronic load-defined
transitions:
Positive TRansition (0 - to - 1)
Negative TRansition (1 - to - 0)
Positive or Negative TRansition (0-to-1 or 1-to-0)
The PTR/NTR filters determine what type of condition transitions set the bits in the
Event register. Questionable Status allows transitions to be programmed. Standard
Event Status register group uses an implied Rise (0-to-1) condition transition to set bits
in the Event register. Reading an Event register clears the register (all bits set to zero).
■
Enable register
The Enable register can be programmed to enable which bit in the corresponding Event
register is logically ORed into the Channel Summary bit.
8-1
High Power DC Electronic Load 63200 Series Operation & Programming Manual
QUESTIONABLE STATUS
OC
OV
OP
RV
OT
0
1
2
3
4
PTR/NTR
EVENT
1
2
4
8
16
1
2
4
8
16
1
2
4
8
16
ENABLE
1
2
4
8
16
LO GICAL O R
CONDITION
N.U. 5-15
SERVICE
REQUEST
GENERATION
OUTPUT QUEUE
STATUS
BYTE
256 BYTE
0
1
2
3
4
5
N.U.
6
7
N.U.
EVENT
ENABLE
1
1
4
8
16
32
4
8
16
32
Figure 8-1
8.3
■
■
■
■
■
8-2
DATA
DATA
DATA
LOGICAL OR
OPC
N.U.
QYE
DDE
EXE
CME
N.U.
N.U.
N.U.
QUES
MAV
ESB
MSS
N.U.
0
1
2
4
5
6
7
4
8
16
32
64
128
SERVICE
REQUEST
GENERATION
4
8
16
32
128
LOGICAL OR
STANDARD EVENT STATUS
The Status Registers of Electronic Load
Questionable Status
The Questionable Status registers inform you one or more questionable status
conditions, which indicate certain errors or faults have occurred. Figure 8-1 lists the
questionable status conditions that are applied to the electronic load.
When the corresponding bit of Questionable Status Condition register is set, it indicates
the condition is true.
Program the PTR/NTR filter to select the way of condition transition in the Questionable
Status Condition register will be set in the Event registers.
Reading of the Questionable Status Event register will reset it to zero.
The Questionable status Enable register can be programmed to specify the
questionable status event bit that is logically ORed to become Bit 3 (QUES bit) in the
Status Byte register.
Status Reporting
Table 8-1 Bit Description of Questionable Status
Mnemonic Bit Value
Meaning
Over current. When an over current condition has occurred on
0
1
a channel, Bit 0 is set and remains set until the over current
OC
condition is removed and LOAD:PROT:CLE is programmed.
Over voltage. When an over voltage condition has occurred on
1
2
a channel, Bit 1 is set and remains set until the over voltage
OV
condition is removed and LOAD:PROT:CLE is programmed.
Overpower. An overpower condition has occurred on a
2
4
channel, Bit 2 is set and remains set until the overpower
OP
condition is removed and LOAD:PROT:CLE is programmed.
Reverse voltage on input. When a channel has a reverse
3
8
voltage applied to it, Bit 3 is set. It remains set until the reverse
RV
voltage is removed and LOAD:PROT:CLE is programmed.
Over temperature. When over temperature condition has
occurred on a channel, Bit 4 is set and the channel is turned
4
16
off. It remains set until the channel has cooled down well below
OT
the over temperature trip point and LOAD:PROT:CLE is
programmed.
Load on. Once any channel goes to “Load On” condition, the
5
32
LD
bit will be set until “Load On” disappears in all channels.
Short on. Once any channel goes to “Short On” condition, the
6
64
ST
bit will be set until “Short On” disappears in all channels.
SPEC TEST pass/fail indicator. Under “SPEC TEST On”
7
128 condition, “1” represents SPEC TEST pass, “0” represents
PF
SPEC TEST fail.
SPEC TEST on. As long as specification checking function is
8
256
SP
enabled, the bit will be set. Otherwise, the bit is reset.
Fan fail. “Fan Fail” means that the fan on any module is out of
order. Once the condition happens, “1” will reflect on the bit.
12 4096 Users can program “LOAD:PROT:CLE” to clear the condition.
FF
If the fan doesn’t function well after programming the
command, the bit will still be set in seconds.
Remote Sensing Connection. Once Vsense terminals are
13 8192
RS
connected to UUT, the bit is set until the connection disjoined.
Program run. When a program is running, the bit is set and
14 16384
PR
remains set until the program comes to an end.
8.4
■
■
■
Output Queue
The Output Queue stores output messages until they are read from the electronic load.
The Output Queue stores messages sequentially on a FIFO (First-In, First-Out) basis.
When there is data in the queue, it sets it to 4 (MAV bit) in the Status Byte register.
8-3
High Power DC Electronic Load 63200 Series Operation & Programming Manual
8.5
Standard Event Status
All programming errors that have occurred will set one or more of the error bits in the
Standard Event Status register.
■
Table 8-2 describes the standard events that apply to the electronic load.
■
Reading of the Standard Event Status register will reset it to zero.
■
The Standard Event Enable register can be programmed to specify the standard event
bit that is logically ORed to become Bit 5 (ESB bit) in the Status Byte register.
Table 8-2 Bit Description of Standard Event Status
Mnemonic Bit Value
Meaning
Operation Complete. This event bit generated is responding to the
0
1 *OPC command. It indicates that the device has completed all
OPC
selected pending operations.
Query Error. The output queue was read when no data were
2
4
QYE
present or the data in the queue were lost.
3
8 Device Dependent Error. Memory was lost, or self-test failed.
DDE
Execution Error. A command parameter was outside the legal
4
16 range or inconsistent with the electronic load’s operation, or the
EXE
command could not be executed due to some operating condition.
Command Error. A syntax or semantic error has occurred, or the
5
32
CME
electronic load has received a <GET> within a program message.
8.6
Status Byte Register
The Status Byte register summarizes all of the status events from all status registers.
Table 8-3 describes the status events that are applied to the electronic load.
The Status Byte register can be read with a serial pull or *STB? query.
The RQS bit is the only bit that is automatically cleared after a serial pull.
When the Status Byte register is read with a *STB? query, Bit 6 of the Status Byte
register will contain the MSS bit. The MSS bit indicates that the load has at least one
reason for requesting service. *STB? does not affect the status byte.
The Status Byte register is cleared by *CLS command.
■
■
■
■
■
Table 8-3
Mnemonic
Bit
CSUM
2
QUES
3
MAV
4
ESB
5
RQS/MSS
6
8-4
Bit Description of Status Byte
Value
Meaning
Channel Summary. It indicates if an enabled channel event
4
has occurred. It is affected by Channel Condition, Channel
Event and Channel Summary Event registers.
Questionable. It indicates if an enabled questionable event
8
has occurred.
Message Available. It indicates if the Output Queue contains
16
data.
Event Status Bit. It indicates if an enabled standard event has
32
occurred.
Request Service/Master Summary Status. During a serial
64 pull, RQS is returned and cleared. For an *STB? query, MSS
is returned without being cleared.
Status Reporting
8.7
■
Service Request Enable Register
The Service Request Enable register can be programmed to specify the bit in the Status
Byte register that will generate service requests.
8-5
Command Index
9.
Command Index
9.1
Command Summary
Common Commands
*CLS
*ESE <NR1>
*ESE?
*ESR?
*IDN?
*OPC
*OPC?
*RCL <NRf>
*RST
*SAV <NRf>
*SRE <NR1>
*SRE?
*STB?
Instrument Commands
CONFigure
:AUTO
:LOAD
:MODE
:DISPlay
:KEY
:REMote
:SAVE
:SOUNd
:VOLTage
:LATCh
:RESet
:ON
:POLarity
:RANGe
:PROTection
:BATT
:VOLT
:Capacity?
:TIME?
CROFFSET
COMMunicate
:ADDRess
:GPIB
:RS485
:SERial
:BAUD
:BITS
9-1
High Power DC Electronic Load 63200 Series Operation & Programming Manual
:PARity
:SBITs
CURRent
:STATic
:L1
:L2
:RISE
:FALL
:DYNamic
:L1
:L2
:RISE
:FALL
:T1
:T2
FETCh
:CURRent
:POWer
:RESistance
:VOLTAGE
:STATus
LOAD
[:STATe]
:SHORt
[:STATe]
:KEY
:PROTection
:CLEar
:SAVE
MEASure
:CURRent
:INPut
:POWer
:RESistance
:STATus
:VOLTage
MODE
POWer
:L1
:L2
:RISE
:FALL
PROGram
:CHAin
:FILE
:KEY
:ONTime
9-2
Command Index
:OFFTime
:PF
:DELay
:TIME
:RUN
:SAVE
:SEQuence
:MODE
:SHORt
:DLEay
:TIME
RESistance
:L1
:L2
:RISE
:FALL
SPECification
:C
:L
:H
[:PASS]
:TEST
:UNIT
STATus
:QUEStionable
:CONDition
:ENABle
[:EVENt]
:NTRansition
:PTRansition
VOLTage
:CURRent
:L1
:L2
:MODE
SYSTem
:WAVE
:PARallel
:DATA
:DISPlay
:MODE
:SLAVe
:CHANnel
:MODEl
9-3
High Power DC Electronic Load 63200 Series Operation & Programming Manual
9.2
Parallel Operation
GPIB COMMAND
MASTER SETTING
SLAVE SETTING
PARALLEL MODE
PARALLEL MODE
SETTING
SETTING
SLAVE MODEL
RS485 ADDRESS
SETTING
SETTING
GPIB COMMAND
SYSTem:PARallel:MODE
SYSTem:PARallel:MODE
SYSTem:PARallel:SLAVe:CHANnel X
SYSTem:PARallel:SLAVe:MODEl X
COMMunication:ADDRess:RS485
ACTIVE MODE
MODE X
SETTING
PARALLEL DATA
SYSTem:PARallel:DATA
TRANSFOR
NO
WAIT OK
ABOUT 3Sec
YES
MEASUR
E
9-4
SPEC
ON/OFF
LOAD
ON/FF
MODE
SHORT
ON/OFF
.....
Troubleshooting
10. Troubleshooting
10.1 Overview
If the 632XX Series DC Electronic Load is unable to operate normally, follow the descriptions
in this chapter below to troubleshoot the problems first. Please consult with Chroma’s
agents or distributors if the information provided in the manual cannot solve the problem.
10.2 Troubleshooting
Problems occurred during operation and suggested resolution.
Problem
WAIT LOAD DTR
SIGNAL LOW
TIMEOUT
Cause
Incorrect hardware signals
(such as off line or firmware
program error.)
WAIT HOST DSR LOW Incorrect hardware signals
(such as off line or firmware
TIMEOUT
program error.)
Resolution
Check if the hardware
communication cable is connected
correctly. Consult with Chroma’s
agents or distributors if the
problem still exists.
Check if the hardware
communication cable is connected
correctly. Consult with Chroma’s
agents or distributors if the
problem still exists.
10-1
Precautions for Loading 63200 Battery
11. Precautions for Loading 63200 Battery
In regard of the blooming EV, the test application for high power battery has become more
and more; and the 63200 Series high power, high voltage electronics loads such as 63204
and 63210 that comply to customer’s the most. However, since it is to test the battery with
high power and voltage, it is necessary to pay more attention to the application safety.
According to the RMA data, the damage part is MOSFET mainly for the high power, voltage
Electronic Load to be repaired in general and the most possible cause is connection over
voltage between MOSFET and UUT. It maybe just a transient, but it could cause the
MOSFET damaged by a little energy if it exceeds the maximum voltage.
Common battery application often forms high voltage by paralleling multiple batteries to avoid
the transmission lost caused by low voltage high current. As the switch is uses directly to
connect the battery and applied object, the study shows it is the main cause of LOAD
damage. Figure 11-1 shows the wire connection of Electronic Load & Battery. When the
switch is shorted same as inputting a pulse signal, the effect caused by the stray element on
the circuit (series inductance and parallel capacitance resonance) will generate a transient
high voltage to damage the MOSFET and cause short circuit explosion as the simulation
shows in Figure 11-2. It can see that if the battery voltage is 500Vdc, the equivalent series
inductance is 10uH and the equivalent parallel capacitance is 10uF (the Load internal
damping uses capacitance to parallel with the Coss of MOSFET), also when the switch is
shorted, up to 911V Spike will appear which is beyond the IC maximum voltage.
+LD
Switch
Inductance
Effect
MOSFET
Battery
Capacitance
R
-LD
Figure 11-1
Wire Connection of Electronic Load & Battery
The figure below shows the simulated circuit diagram of the application that causes damage.
11-1
High Power DC Electronic Load 63200 Series Operation & Programming Manual
VF1
SW1
Ls 10u
R1 0
t
Cs 10u
V1 500
R2 100m
Figure 11-2
T
Simulated Circuit Diagram
1.00k
VF1=911V
電壓(V)
750.00
500.00
250.00
0.00
0.00
Figure 11-3
250.00u
500.00u
時間(s)
750.00u
1.00m
Simulation of Surge Chart when Switching between Electronic Load & Battery
During the test procedure if the entire circuit is shorted due to MOSFET breakdown by high
voltage and if the energy source is battery or other source that can provide high power,
continuous high current will pass through Electronic Load internal due to short circuit. The
load and the battery should be disconnected immediately. If unable to do so, the huge
energy of battery output may cause the Electronic Load to burnout or even more severe
situation. To prevent this from happening, a mechanism of over current protection is
required.
For the above situation, it is suggested not to connect the battery and Electronic Load
directly using a switch only to avoid damaging the equipment.
11-2
Precautions for Loading 63200 Battery
11.1 Measures for Improvement
11.1.1 Additional Protection Switch
As the burnout may expand due to the MOSFET damage and continuous energy release
from battery that caused by the conditions described previously, it is suggested to connect
the wires as Figure 11-4 shows below when doing the battery charge/discharge tests to
prevent problems from happening and to ensure the safety of using Electronic Load.
No.2 NFB
No.1
NFB
1
Battery
Figure 11-4
Fus
R
Load
Wire Connecting Diagram of LOAD & Battery
NFB(No-Fuse Breaker): The capacity (current amount) should be smaller than maximum
current to facilitate load and it should be able to cutoff in time when
the internal is aging short circuited.
R: It is suggested to install the resistor of 100kΩ or above to avoid giving Electronic Load
huge voltage in a sudden.
Fuse: First calculate the kW for discharge and select a proper fuse.
Note
If two or more Electronic Loads are paralleled for discharge test, the front
terminal of each Load has to add a fuse for protection.
11.1.2 Operation
Before inputting voltage to Electronic Load, switch to No.1 NFB to make the current go
through R resistor to prevent damaging or aging the MOSFET from high voltage gave to
Load internal in a sudden.
Switch to No.2 NFB after 5 seconds and then start battery discharge testing.
To stop discharge test, first press Load OFF on the Electronic Load and then switch No.2
NFB to OFF and last switch No.1 NFB to OFF. The whole discharge test stops and the
battery is cutoff from Electronic Load.
For example:
How to install the wire to discharge 2kW when using 300V (maximum current is 100A) for
battery discharge?
(I = P / V = 2000W / 300V = 6.6A)
11-3
High Power DC Electronic Load 63200 Series Operation & Programming Manual
¾
¾
¾
11-4
When NFB is selected, since the battery maximum current is 100A, the NFB should be
smaller than 100A; therefore it is suggested to use NFB of 20A.
When R is selected, it is suggested to use the resistor of 1W, 100kΩ
When Fuse is selected, it has to be larger than loading discharge current. In this case,
the discharge current is 6.6A; therefore it should use fuse of 10A.
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