Et system ELP/DCH Series Bedienungsanleitung
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User’s Manual
ELP/DCH series
PROGRAMMABLE DC ELECTRONIC LOAD
ET System electronic GmbH 2021-06-10 Manual Edition V.2.2
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Content
Contents Introduction.........................................................................................................................................4
Chapter 1 Size and Installation...........................................................................................................................8
1 .1 Dimension ..............................................................................................................................................8
1.2 Installation.............................................................................................................................................10
1.3 Plug in Power Cord ...............................................................................................................................10
Chapter 2 Quick Start.......................................................................................................................................11
2.1 Product Introduction..............................................................................................................................11
2.2 Features .................................................................................................................................................11
2.3 Front Panel ............................................................................................................................................13
2.4 LCD Status Bar Function ......................................................................................................................14
2.5 Rear Panel .............................................................................................................................................16
2.6 First turn-on checkout ...........................................................................................................................16
2.6.1 Self-test Process.....................................................................................................................17
2.6.2 In the Event of a Problem......................................................................................................17
Chapter 3 Functions and Features .......................................................................................................................19
3.1 Basic Operation Modes ......................................................................................................................19
3.1.1 Constant Current Mode (CC)................................................................................................20
3.1.2 Constant Voltage Mode (CV) ................................................................................................21
3.1.3 Constant Resistance Mode (CR)..........................................................................................22
3.1.4 Constant Power Mode (CW) .................................................................................................23
3.2 List Operation........................................................................................................................................24
3.3 OCP Test Function.................................................................................................................................27
3.4 EFFT Function ......................................................................................................................................29
3.5 Auto test function ..................................................................................................................................30
3.6 Dynamic Function .................................................................................................................................35
3.7 Battery test function ..............................................................................................................................39
3.8 Short-circuit Simulation Function .........................................................................................................41
3.9 LED Simulation Function .....................................................................................................................42
3.10 SWEEP dynamic frequency conversion scanning...............................................................................46
3.11 TIMING Time measurement ............................................................................................................48
3.12 DCR DC Resistance Measurement Function ...................................................................................50
3.13 Measurement item ............................................................................................................................52
3.13.1 Voltage, current, resistance and power measurement ...................................................52
3.13.2 Ripple measurement............................................................................................................53
Chapter 4 System settings and Save function......................................................................................................54
4.1 System Settings .....................................................................................................................................54
4.1.1 Von/Voff Function....................................................................................................................55
4.1.2 Source Type Selection Function...........................................................................................56
4.2 Configuration ........................................................................................................................................56
4.2.1 Remote Sense Compensation Mode...................................................................................58
4.2.2 Shortcut Call Mode.................................................................................................................59
4.2.3 Trigger Output Settings..........................................................................................................60
4.3 Save/Recall Function ............................................................................................................................60
Chapter 5 Protection Function.............................................................................................................................62
5. 1 Over-voltage protection (OVP) ............................................................................................................62
5.2 Over-current protection (OCP)..............................................................................................................62
5.3 Over-power protection (OVP)...............................................................................................................63
5.4 Over-temperature protection (OTP) ......................................................................................................63
5.5 Input Voltage Reverse Protection (RV) .................................................................................................64
Chapter 6 I/O Interface........................................................................................................................................65
6.1 I/O Interface .......................................................................................................................................65
6.2 I/O Interface Function ........................................................................................................................65
Chapter 7 Specifications...................................................................................................................................67
7.1 Main Specifications...............................................................................................................................67
Chapter 8 Communication Interfaces..................................................................................................................77
8.1 Communication module ........................................................................................................................77
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8.2 DB9 .......................................................................................................................................................77
8.3 Protocol .................................................................................................................................................78
8.4 SCPI Communication Instruction .........................................................................................................79
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Contents Introduction
Thank you for purchasing ELP/DCH series DC Electronic Load. To obtain maximum
performance from the product, please read this manual first, and keep it handy for future reference.
We will use the alias E-load of DC Electronic Load in the following.
Registered trademarks
Windows and Excel are registered trademarks of Microsoft Corporation in the United States and/or
other countries.
Checking Package Contents
When you receive the instrument, inspect it carefully to ensure that no damage occurred during
shipping. In particular, check the accessories, panel switches, and connectors. If damage is evident,
or if it fails to operate according to the specifications, contact your authorized Hopetech distributor or
reseller.
When transporting the instrument, use the same packaging materials used for the delivery to you.
Check the package contents as follows
No.
Item
Quantity
1
Electronic Load
1
2
User’s Manual
1
3
RS232 Cable
1
4
Power Cord
1
5
Test Report
1
Safety Notes
The instrument is designed to conform to IEC 61010 Safety Standards, and has been thoroughly
tested for safety prior to shipment. However, using the instrument in a way not described in this
manual may negate the provided safety features.
Before using the instrument, be certain to carefully read the following safety notes.
Note
Mishandling during use could result in injury or death, as well as damage to the instrument. Be certain
that you understand the instructions and precautions in the manual before use.
Notation
This manual contains information and warnings essential for safe operation of the instrument and for
maintaining it in safe operating condition. Before using the instrument, be certain to carefully read the
following safety notes.
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Indicates very important message in this manual. When the symbol is printed
on the instrument, refer to a corresponding topic in the Instruction Manual.
Indicates DC (direct current)
Indicates a fuse
Indicates earth terminal
In this manual, the risk seriousness and the hazard levels are classified as follows.
Indicates an imminently hazardous situation that will result in death or
serious injury to the operator.
Indicates a potentially hazardous situation that will result in death or serious
injury to the operator.
Indicates a potentially hazardous situation that may result in minor or
moderate injury to the operator or damage to the instrument or malfunction.
Indicates functions of the instrument or relative suggestion of a correct
operation.
Usage Notes
Installation environment
Operating temperature and humidity range
0°C ~ 40°C，< 80%RH(no condensation)
Storage temperature and humidity range
23 ±5°C，< 80%RH (no condensation)
Installing the instrument in inappropriate locations may cause a malfunction of instrument or accident.
Avoid the following locations.
Exposed to direct sunlight or high temperature
Exposed to corrosive or combustible gases
Exposed to water, oil, chemicals, or solvents
Exposed to high humidity or condensation
Exposed to a strong electromagnetic field or electrostatic charge
Exposed to high quantities of dust particles
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Near induction heating systems (such as high-frequency induction heating systems
and IH cooking equipment)
Susceptible to vibration
Checking before use
Before using the instrument at the first time, verify that it operates normally to ensure that no damage
occurred during storage or shipping. If you find any damage, contact your authorized Hopetech
distributor or reseller.
Before using the instrument, check that the coating of the test leads or
cables are neither ripped nor torn and that no metal parts are exposed.
Using the instrument under such conditions could result in electrocution.
Contact your authorized Hopetech distributor or reseller in this case
Handling Precautions
Do not try to modify, disassemble, or repair the instrument. This may result
in fire, electric shock accident, or injury.
Do not place the instrument on an unstable or slanted surface. It may drop
or fall, causing injury or instrument failure.
This equipment is an electric energy conversion to heat equipment,
blocking the ventilation holes of the equipment will lead to serious
consequences.
Be sure to turn the power off after using it.
Measurement precautions
To avoid electric shock accident and short circuit, please operate the
instrument as following:
Do not test the voltage over 150 VDC
Do not test the terminal-to-ground voltage over 160 VDC.
Do not test AC voltage.
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Be sure to connect the test lead correctly.
Wear gloves of rubber or similar materials during measurement.
For achieving the measurement accuracy, it is recommended that the
equipment should be operated half an hour after power-on.
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Chapter 1 Size and Installation
1 .1 Dimension
ELP/DCH series electronic load dimension
Figure 1.1 Appearance of instrument
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Figure 1.2 Instrument dimension 1
Figure 1.3 Instrument dimension 2
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1.2 Installation
This instrument is intended for indoor use in a pollution degree 2 environment. Please refer to the
specifications table for the allowable environment operating limits.
Figure 1.6 E-Load outline diagram (unit mm)
There are 2 cabinet mounting holes on the both sides of the E-load. After removing the gap, it can be
used for cabinet installation and positioning.
1.3 Plug in Power Cord
Connect an appropriate IEC power cord to the DC Load and plug the power cord into an AC power
outlet. Please find the following power cord type in different countries and areas.
Ensure that the line voltage selector switch on the back panel is set to match your line voltage. Failure
to do so could result in damage to the instrument.
Figure 1.7 4 types of power cord for different countries and area
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