Owon OEL85 Series User Manual

Programmable dc electronic load

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OEL85 Series Programmable DC

Electronic Load

User Manual

For product support, visit www.owon.com.hk/download

※. The illustrations, interface, icons and characters in the user manual may be slightly

different from the actual product. Please refer to the actual product.

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Summary of Contents for Owon OEL85 Series

Page 1 OEL85 Series Programmable DC Electronic Load User Manual For product support, visit www.owon.com.hk/download ※. The illustrations, interface, icons and characters in the user manual may be slightly different from the actual product. Please refer to the actual product.
Page 2 LILLIPUT will continue to improve products and reserves the rights to change specification at any time without notice. is the registered trademark of the LILLIPUT Company. Fujian LILLIPUT Optoelectronics Technology Co., Ltd. No. 19, Heming Road Lantian Industrial Zone, Zhangzhou 363005 P.R. China Tel: +86-596-2130430 Fax: +86-596-2109272 Web: E-mail: www.owon.com.cn info@owon.com.cn...
Page 3: General Warranty
General Warranty We warrant that the product will be free from defects in materials and workmanship for a period of 2 years from the date of purchase of the product by the original purchaser from our company. The warranty period for accessories are 12 months.
Page 4: Table Of Contents
Table of Contents 1. General Safety Requirements ............1 2. Safety Terms And Symbols ............2 3. Quick Start ..................3 3.1 Product Introduction ................3 3.2 Panel and User Interface ..............4 3.2.1 Front Panel ................4 3.2.2 Rear Panel ................5 3.2.3 User Interface ................
Page 5 4.13 Compensation Function ..............30 4.14 Test Function ...................30 4.14.1 Battery discharge test function (Only available for T suffix version) .................... 30 4.14.2 OCP test function (Only available for T suffix version) ..33 4.14.3 OPP Test Function(Only available for T suffix version) ..35 5.
Page 6: General Safety Requirements
1. General Safety Requirements Before use, please read the following safety precautions to avoid any possible bodily injury and to prevent this product or any other connected products from damage. In order to avoid any contingent danger, ensure this product is only used within the range specified. Only the qualified technicians can implement the maintenance.
Page 7: Safety Terms And Symbols
2. Safety Terms And Symbols Safety Terms Terms in this manual. The following terms may appear in this manual: Warning: Warning indicates the conditions or practices that could result in injury or loss of life. Caution: Caution indicates the conditions or practices that could result in damage to this product or other property.
Page 8: Quick Start
3. Quick Start This chapter will introduce the power-on inspection steps for the OEL85 series load, ensuring that the load can be properly turned on and used in its initialized state. It will also cover the front panel, rear panel, button functions,...
Page 9: Panel And User Interface
3.2 Panel and User Interface 3.2.1 Front Panel Figure 3- 1 Front Panel 0-9 and . Number and dot key: input number; Esc key: return to the previous page. Use to move the cursor left and right to the desired <...
Page 10: Rear Panel
Lock all buttons and knobs; LOCK Way to remove: press and hold the LOCK key to remove the setting. Constant voltage setting button: When the user presses this button, the constant voltage setting mode is selected; and user can use the numeric buttons or knob to input the set voltage value.
Page 11 internal heat dissipation of the machine will lead to excessive internal temperature. 2 Remote When the remote sensing function is enabled, this compensation sampling terminal should be connected to the load side to compensate for the voltage drop across the wires.
Page 12: User Interface
Enable beeper A failure alarm 3.3 General Inspection When you receive a new OEL85 series DC electronic load, it is recommended that you follow the steps below to inspect the instrument. 1. Check whether there is any damage caused by transportation.
Page 13: Power-On Inspection
2. Check the Accessories. The supplied accessories have been already described in Appendix A: Accessories of this manual. You can check whether there is any loss of accessories with reference to this description. If it is found that there is any accessory lost or damaged, please get in touch with our distributor responsible for this service or our local offices.
Page 14: Functional Features And Panel Operation
Functional features and Panel operation This chapter will provide a detailed description of the features and functions of the OEL85 DC electronic load, as well as the panel menu operations. It will be divided into the following sections:  Turn on/off channel output ...
Page 15: Local/Remote Mode Operation Switch
4.2 Local/Remote mode Operation switch The instrument provides both local and remote operation mode, and the two modes can be switched by communication commands. In power initialization mode, the machine is operated locally by default.  Local operation mode: Use the keys on the panel to perform relevant operations.
Page 16 Figure 4.3.1-1 CC mode: The Voltage-Current Relationship Diagram Figure 4.3.1-2 CC mode operation interface There are two ways to set the output current (CC mode): Mode one: 1. Press MODE and rotary the knob to select CC mode. 2. Press Enter key to edit current setting, use the numeric 0-9 softkey to set desired current.
Page 17: Constant Voltage Mode（Cv
to adjust directly to the set value. 3. Press ON/OFF key to output the setting current. In constant current mode, the user can also set the following parameters. Operation steps: 1. Press CONF to enter parameter setting interface 2. Set the maximum working current 3.
Page 18 Figure 4.3.2-2 CV mode operation interface There are two ways to set the output voltage (CV mode): Mode one: 1. Press MODE and rotary the knob to select CV mode. 2. Press Enter key to edit voltage setting, use the numeric 0-9 softkey to set desired voltage.
Page 19: Constant Resistance Mode (Cr)
4. Set the rising/falling slope of the voltage a) Fast b) Normal c) Slow 5. OCP, OVP, OPP setting 4.3.3 Constant Resistance Mode (CR) When the user selects the SHIFT+ CV function key, the load enters constant resistance mode (CR). In constant resistance operation mode, the electronic load will behave as a constant resistor.
Page 20: Constant Power Mode (Cp)
There are two ways to set the output resistance (CR mode): Mode one: 1. Press MODE and rotary the knob to select CR mode. 2. Press Enter key to edit resistance setting, use the numeric 0-9 softkey to set desired resistance. Press Enter key to save resistance setting, or turn the knob to adjust directly to the set value.
Page 21 Figure 4.3.4-1 CP mode: The Voltage-Current Relationship Diagram Figure 4.3.4-2 CP mode operation interface There are two ways to set the output power (CP mode): Mode one: 1. Press MODE and rotary the knob to select CP mode. 2. Press Enter key to edit power setting, use the numeric 0-9 softkey to set desired power.
Page 22: Input Control Function
Mode two: 1. Press SHIFT+CC , at the same time, the user interface will switch into CP mode. 2. Press Enter key to edit power setting, use the numeric 0-9 softkey to set desired power. Press Enter key to save power setting, or turn the knob to adjust directly to the set value.
Page 23: Short Circuit Simulation Function
4.6 Short Circuit Simulation Function The electronic load can simulate a short circuit at the input terminal to test whether the protection function of the device under test (DUT) operates correctly when a short circuit occurs at its output terminal. To switch to the short circuit state, press (SHIFT) + 1 (SHORT) on the front panel of the electronic load.
Page 24: System Menu Function
4.7 System Menu Function Press CONF to enter system setting function. Detail operation steps: Press CONF to enter “Function menu” item setting. 1. Rotary the knob to select the item you want to set. 2. Press Enter to confirm. 3. Press Esc or CONF to return the function menu. Description: 1.
Page 25: Parameter Setting
The parallel machine address can be selected ADDRESS from 1 to 10 to set the local machine's parallel address. MULTIPLE Parallel Figure 4-7-1 system setup page 4.7.2 Parameter Setting Select System Settings, then choose Parameter Settings. Press the Enter key to enter the Parameter Settings options, as shown in the table below. The parameter settings of the electronic load are as follows: Menu Settings...
Page 26: Multiple Device Parallel Function
Figure 4-7-2 parameters setup page 4.8 Multiple Device Parallel Function The OEL85 series products can be operated in parallel, supporting up to 10 units, with a maximum current of up to 400A.
Page 27: Parallel Output Line Connection
2. Parallel operation is supported in CC, CP, and CR modes (CV, short, and dynamic modes are not supported). 3. If the number of parallel units exceeds 10, please consult OWON customer service or authorized distributor. 4. Please note that there can only be one master unit in the system, and the addresses of all units should be different.
Page 28: Parallel Communication Line Connection
4.8.2 Parallel Communication line Connection The OEL85 series parallel communication uses RS485. Users can communicate through the DB9 interface, with the communication pins as shown in the diagram below: Pin 6 and Pin 7. Function Pin 6 RS485_A Pin 7...
Page 29: Operating Instructions
4.9 Protection Functions and Fault Information The OEL85 series products monitor the internal operation of the machine in real time, including system logic faults, external mains power faults, internal power stage faults such as OVP (Over Voltage Protection), OCP (Over...
Page 30 will immediately turn OFF, and the buzzer will sound. The main unit will display OVP. Protection can be cleared by pressing the power button or the ENTER button. Over Current Protection (OCP) There are two types of over-current protection in the electronic load: Hardware overcurrent protection: The maximum load current of the ...
Page 31: Communication Port Introduction
the rated current for 100us, the fast software over-power protection is triggered, the load will automatically turn off and the panel will display OPP. Users can set the software over-power protection value of the load. For related configuration items, please refer to CONF to enter the parameter setting.
Page 32: Dynamic Mode Function
Pin 5 4.11 Dynamic Mode Function In dynamic mode, the OEL85 series electronic load allows the user to set two load current parameters corresponding to the constant mode. By configuring the operation mode, the load current will switch back and forth...
Page 33 Dynamic Mode Setting Parameters: Dynamic Test Description Operation Select the continuous operation mode: Continuous Mode / Single T1 Value Set the T1 load current parameter T1 Time Set the T1 load current duration T2 Value Set the T2 load current parameter T2 Time Set the T2 load current duration Rise Slope...
Page 34: Von Function
receives a “SHIF+.” trigger command, it will perform a single switching action. The diagram below shows a schematic of the operation interface in this mode. 4.12 Von Function When testing some power products with slow voltage rise speed, if you turn on the input of the electronic load first and then turn on the power supply, the power supply may be pulled to protect.
Page 35: Compensation Function
4.13 Compensation Function When the electronic load operates with high current, significant voltage drops can occur across the connection cables between the load and the device under test (DUT). To ensure measurement accuracy, the electronic load provides a pair of remote compensation terminals. Users can use these terminals to sample the precise output voltage of the DUT.
Page 36 state. When the discharge test uses only one or two of the conditions as the termination judgment conditions, the other unused conditions must be set to "OFF". Press the On/Off button to turn on the channel. During the test, the main interface can display the actual current, battery discharge voltage, battery discharge time, and battery discharged capacity in real time.
Page 37 On/Off key in the prompt box that appears on the load interface: Pause Discharge, Terminate Discharge. After confirming the selection, enter OFF, and the key indicator will turn off. If the discharge is terminated, press the On/Off key again to power on, starting a new round of discharge recording.
Page 38: Ocp Test Function (Only Available For T Suffix Version)
the load port RC when the relay closes, which may cause excessive voltage at the load end, thus avoiding damage to the electronic load. It is recommended that the resistance value of the current-limiting resistor be greater than 100kΩ.  Fuse: A fuse that melts and cuts off the current when the current increases to an abnormal level and the temperature becomes too high, thus protecting the circuit.
Page 39 OCP test steps: 1. Select OCP mode in programming mode, enter the OCP test function setting interface, and edit the OCP setting parameters. 2. Press the On/Off button to start the OCP test. If it is within the range, the test is PASS and the panel displays the corresponding display. If it is out of the range, the test fails and the panel displays the corresponding display.
Page 40: Opp Test Function(Only Available For T Suffix Version)
4.14.3 OPP Test Function(Only available for T suffix version) This series of electronic loads has an over-power protection (OPP) test function. In the OPP test mode, when the input voltage reaches the Von value, the load starts to work after a delay. The current increases by the step value at regular intervals, and the load input voltage is detected at the same time to determine whether it is higher than the OPP voltage value.
Page 42: Pc Software Introduction
5. PC software introduction 1. Please go to the our official website or contact your local dealer or our sales specialist to download or request the PC software for OEL15 series Electronic Load 2. Connect the USB CDC port on the back panel to the host computer. After the instrument is successfully connected, enter the mode setting to remotely operate the instrument.
Page 43: Troubleshooting
6. Troubleshooting 1. The instrument is powered on but no display. Please following the steps:  Check if the power is connected properly.  Check if the fuse which is below the AC Power socket is used appropriately and in good condition (the cover can be pried open with a straight screwdriver).
Page 44: Technical Specification
7. Technical Specification The instrument must be operated continuously for more than 30 minutes at the specified operating temperature to achieve the following specifications: Model OEL8512 OEL8512B OEL8512C OEL8511 OEL8511B OEL8511C Volt 0-150V 0-300V 0-600V 0-150V 0-300V 0-600V Curr Input 0-40A 0-20A 400W...
Page 45 Min rise time 20us Voltage readback value Range 150V 300V 600V 150V 300V 600V Resolution 0.03%+ 0.03%+ 0.03%+ 0.03%+ 0.03%+ 0.03%+ Accuracy 0.05%FS 0.05%FS 0.05%FS 0.05%FS 0.05%FS 0.05%FS Current readback value Range 0-40A 0-20A Resolution 0.1mA 0.1mA Accuracy 0.03%+0.03%FS Power readback value Range 0-400W 0-200W...
Page 46 Interface RS-232 Supported SCPI General Heat Internal intelligent fan forced air cooling dissipation Compliant with the European EMC Directive 89/336/EEC, for Class A test and Safety measurement products Withstand voltage 1.5KV/AC/5mA (Input to Ground) Volume 375mm*215mm*88mm (L*W*H) Net weight Approx. 5kg Approx.
Page 47: Appendix
8. Appendix 8.1 Appendix A: Accessories (The accessories subject to final delivery.) Standard Power Cord User Manual USB Cable Fuse Optional L-shaped RS232 20A Test cable fixed bracket conversion board 8.2 Appendix B: General Care and Cleaning General Care Do not store or leave the instrument where the liquid crystal display could be exposed to direct sunlight for long periods of time.
Page 48 2. Disconnect power before cleaning your instrument. Clean the instrument with a damp soft cloth (not dripping with water). It is recommended to clean with soft detergent or fresh water. To avoid damage to the instrument, do not use any corrosive chemical cleaning agents. Warning: Before re-applying power, ensure that the instrument is completely dry, avoiding any electric shock or electrical short circuit resulting from...

This manual is also suitable for:

Oel8511 Oel8511b Oel8511c Oel8512 Oel8512b Oel8512c