SPS3081 - Computer Adapter Owon - Free user manual and instructions

Product Type	Programmable DC Power Supply
Brand	Owon
Model	SPS3081
Output Voltage	0 - 30 V
Output Current	0 - 8.1 A
Output Power	240 W
Display	Dual LED displays (Voltage and Current)
Resolution	10 mV, 1 mA
Ripple & Noise	< 2 mVrms, < 3 mArms
Protection	Overload, Overvoltage, Overcurrent, Overtemperature
Cooling	Fan cooled, variable speed
Input Voltage	AC 100-240 V, 50/60 Hz (auto-ranging)
Interfaces	USB (optional RS232)
Dimensions (W x H x D)	214 x 108 x 350 mm
Weight	3.5 kg
Accessories Included	Power cord, test leads with alligator clips, manual
Safety Compliance	CE, RoHS
Maintenance	Clean with a dry cloth; ensure ventilation openings are unobstructed
Reparability	Replaceable fuse and fan; user-serviceable
Certification	CE, FCC, RoHS

Frequently Asked Questions - SPS3081 Owon

How do I set the output voltage and current on the SPS3081?

Use the VOLTAGE and CURRENT knobs to adjust the values. Press the SET button to confirm and enable the output using the OUTPUT switch.

Can I use the SPS3081 to charge batteries?

Yes, but you must set the correct voltage and current limits for your battery type. Ensure the power supply is in constant current mode initially and monitor the process.

What is the maximum output current of the SPS3081?

The maximum output current is 8.1 A when the output voltage is below 30 V.

Does the SPS3081 have overvoltage protection?

Yes, it features overvoltage protection (OVP) that can be configured to shut down the output if the voltage exceeds a set threshold.

How do I connect the SPS3081 to a computer?

Connect via the USB port on the rear panel. Install the provided software from Owon's website to control and log data remotely.

What does the 'CV' and 'CC' indicator mean?

CV (Constant Voltage) indicates the supply is regulating voltage; CC (Constant Current) indicates it is regulating current, typically when driving a load.

Can I use the SPS3081 in series or parallel?

Yes, multiple units can be connected in series for higher voltage or in parallel for higher current. Ensure proper isolation and common ground.

What type of cooling does the SPS3081 use?

It uses a variable speed fan that adjusts speed based on internal temperature and load.

How do I perform a factory reset?

Turn off the unit, press and hold the SET button while turning it on, until the display shows 'rSt'. Release the button.

What is the warranty period for Owon SPS3081?

Owon offers a 3-year warranty against manufacturing defects. Extended warranties are available from authorized dealers.

USER MANUAL SPS3081 Owon

SPS Series Single Channel

Output DC Power Supply

User Manual

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

※: The illustration,interface,icons and characters in the user manual may be slightly different from the actual product.Please refer to the actual product.

Copyright © LILLIPUT Company. All rights reserved.

The LILLIPUT's products are under the protection of the patent rights, including ones which have already obtained the patent rights and those which are applying for. The information in this manual will replace all materials published.

The information in this manual was correct at the time of printing. However, LILLIPUT will continue to improve products and reserves the rights to change specification at any time without notice.

owon ^® 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: [phone] Fax: [phone]

Web: www.owon.com E-mail: [e-mail]

General Warranty

We warrant that the product will be free from defects in materials and workmanship for a period of 2 years (1 year for accessories) from the date of purchase of the product by the original purchaser from our company. This warranty only applies to the original purchaser and is not transferable to a third party.

If the product proves defective during the warranty period, we will either repair the defective product without charge for parts and labour, or will provide a replacement in exchange for the defective product. Parts, modules and replacement products used by our company for warranty work may be new or reconditioned like new. All replaced parts, modules and products become the property of our company.

In order to obtain service under this warranty, the customer must notify our company of the defect before the expiration of the warranty period. Customer shall be responsible for packaging and shipping the defective product to the designated service center, a copy of the customers proof of purchase is also required.

This warranty shall not apply to any defect, failure or damage caused by improper use or improper or inadequate maintenance and care. We shall not be obligated to furnish service under this warranty: a) to repair damage resulting from attempts by personnel other than our company representatives to install, repair or service the product; b) to repair damage resulting from improper use or connection to incompatible equipment; c) to repair any damage or malfunction caused by the use of not our supplies; or d) to service a product that has been modified or integrated with other products when the effect of such modification or integration increases the time or difficulty of servicing the product.

Please contact the nearest Sales and Service Offices for services.

Excepting the after-sales services provided in this summary or the applicable warranty statements, we will not offer any guarantee for maintenance definitely declared or hinted, including but not limited to the implied guarantee for marketability and special-purpose acceptability. We should not take any responsibilities for any indirect, special or consequent damages.

Table of Contents

1. General Safety Requirement.... 1
2. Safety Terms and Symbols 2
3. Quick Start ....3

3.1 Front Panel and Interface 3

3.1.1 Front Panel 3
3.1.2 Rear Panel 4
3.1.3 User Manual 5

3.2 General Inspection ....5
3.3 Power Inspection 6
3.4 Output Inspection 6

3.4.1 Voltage Output Inspection 6
3.4.2 Current Output Inspection 7

1. Panel Operation ....8

4.1 Turn On/Off the Channel Output 8
4.2 Set the Output Voltage/Current 8
4.3 Over Voltage/Current Protection 8
4.4 Memory key shortcut settings 9

4.4.1 Quick Output 9
4.4.2 Edit 9

4.5 Set List Waveform Output 10

4.5.1 List Waveform Editing 10
4.5.2 List Waveform Output 11

4.6 Set Automatic Output at Power-On 12

4.7 Display 13

4.7.1 Number 13
4.7.2 Curve 13

1. Troubleshooting....14
2. Appendix....15

6.1 Appendix A:Accessories 15
6.2 Appendix B: General Care and Cleaning 15

1. General Safety Requirement

Before any operations, please read the following safety precautions to avoid any possible bodily injury and prevent this product or any other products connected from damage. In order to avoid any contingent danger, this product is only used within the range specified.

Only a qualified person should perform internal maintenance.

To avoid Fire or Personal Injury:

■ Use Proper Power Cord. Use only the power cord supplied with the product and certified to use in your country.

■ Product Grounded. This instrument is grounded through the power cord grounding conductor. To avoid electric shock, the grounding conductor must be grounded. The product must be grounded properly before any connection with its input or output terminals.

■ Check all Terminal Ratings. To avoid fire or shock hazard, check all ratings and markings on this product. Refer to the user manual for more information about ratings before connecting to the instrument.

- Do not operate without covers. Do not operate the instrument with covers or panels removed.

■ Use the Proper Fuse. Use only the specified type and rating fuse for this instrument.

■ Avoid exposed circuit. Be careful when working on exposed circuitry to avoid risk of electric shock or other injury.

■ Do not operate if any damage. If you suspect damage to the instrument, have it inspected by qualified service personnel before further use.

■ Use your instrument in a well-ventilated area. Please keep well ventilated and inspect the intake and fan regularly.

■ Do not operate in damp conditions. To avoid short circuiting to the interior of the device or electric shock, please do not operate in a humid environment.

■ Do not operate in an explosive atmosphere. To avoid damages to the device or personal injuries, it is important to operate the device away from an explosive atmosphere.

- Keep product surfaces clean and dry. To avoid the influence of dust or moisture in air, please keep the surface of device clean and dry.

2. Safety Terms and Symbols

Safety Terms

Terms in this manual (The following terms may appear in this manual):

Warning: Warning indicates 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.

Terms on the product. The following terms may appear on this product:

Danger: Indicates an immediate hazard or injury possibility.

Warning: Indicates a possible hazard or injury.

Caution: Indicates potential damage to the instrument or other property.

Safety Symbols

Symbols on the product. The following symbols may appear on the product:

Hazardous Voltage

Refer to Manual

Protective Earth Terminal

Chassis Ground

Public Ground

3. Quick Start

3.1 Front Panel and Interface

3.1.1 Front Panel

Figure 3-1 Front panel overview

1	Display Area	Display user interface.
2	Current Key	Set current parameters, press to move the cursor with editing parameters.
3	Knob	Select the main menu or change the value, function equals to the confirmation key.
4	Over Current Setting Key	Set over current protection parameters, press to move the cursor when editing parameters
5	On/Off Key	Turn on/off the channel, or long press to turn on off the power-on automatic startup function.
6	Memory Key	5 sets of channel parameters can be stored for quick output, or long press to enter the List waveform output editing interface.
7	Channel Output Terminal	Output access of channel.
8	Display Key	Number display and curve display switch key.
9	Over Voltage Setting Key	Set over voltage protection parameters, press to me the cursor when editing parameters.
10	Voltage Key	Set voltage parameters, press to move the cursor when editing parameters.

Button light instruction

On/Off key: The key lights up when the channel turns on.

3.1.2 Rear Panel

Figure 3-2 Rear panel overview

1	Device USB Port	Update the firmware, PC software control port
2	Power Button	Turn on/off the instrument.
3	Fuse	Power fuse.
4	AC Power Input Jac AC power input interface.

3.1.3 User Manual

Figure 3-3 User Interface

3.2 General Inspection

After you get a new power supply, it is recommended that you should make a check on the instrument according to the following steps:

1. Check whether there is any damage caused by transportation.

If it is found that the packaging carton or the foamed plastic protection cushion has suffered serious damage, do not throw it away first till the complete device and its accessories succeed in the electrical and mechanical property tests.

1. Check the Accessories

The supplied accessories have been already described in the

"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 the distributor of our responsible for this service or our local offices.

1. Check the Complete Instrument

If it is found that there is damage to the appearance of the instrument, or the instrument can not work normally, or fails in the performance test, please get in touch with our distributor responsible for this business or our local offices. If there is damage to the instrument caused by the transportation, please keep the package. With the transportation department or our distributor responsible for this business informed about it, a repairing or replacement of the instrument will be arranged by us.

3.3 Power Inspection

(1) Use the power cord supplied with the accessories to connect the instrument to the AC power.

Warning:

To prevent electric shock, make sure that the instrument properly grounded.

(2) Press the power button on the front panel, the button light will be on, and the startup screen will be displayed on the screen.

3.4 Output Inspection

Output inspection is to ensure that the instrument can achieve its rated outputs and properly respond to operation from the front panel. For the procedures below, it is suggested that you read "Turn On/Off the Channel Output" on page 8 and "Set the Output Voltage/Current" on page 8.

3.4.1 Voltage Output Inspection

The following steps verify basic voltage functions without load:

(1) When the instrument is under no load, select a channel and ensure the output current setting for this channel is not at zero.
(2) Turn on the channel output, then ensure the channel is in Constant Voltage output mode.
(3) Set some different voltage values on this channel; check if the actual voltage value displayed is close to the set voltage value, and also that the actual current value displayed is nearly to zero.

(4) Check that if the output voltage can be adjusted from zero to the maximum rating, when it is set to the maximum or minimum, a beep is heard, indicating that the limit has been reached.

3.4.2 Current Output Inspection

The following steps check basic current functions with a short across the power supply's output:

(1) Power on.
(2) Connect a short across (+) and (-) output terminals with an insulated test lead on this channel. Use a wire size sufficient to handle the maximum current.
(3) Set the output voltage to the maximum rating on this channel.
(4) Turn on the channel output. Ensure the channel you used is in Constant Current output mode.
(5) Set some different current values on this channel; check if the actual current value displayed is close to the set current value, and to check if the actual voltage value displayed is nearly zero.
(6) Check that if the output current can be adjusted from zero to the maximum rating, when it is set to the maximum or minimum, a beep is heard, indicating that the limit has been reached.
(7) Turn off the channel output and remove the short circuit from the output terminals.

4. Panel Operation

4.1 Turn On/Off the Channel Output

Press the On/Off key to turn on/off the channel.

4.2 Set the Output Voltage/Current

In the channel setting area, press V / I key to move the gray cursor between different positions of the voltage/current value. After pressing the output voltage/current setting values, turn the knob to change the value of current cursor, and press the knob or press the V / I key to move the cursor.

4.3 Over Voltage/Current Protection

Overvoltage protection (O.V.P) or overcurrent protection (O.C.P): after the output is turned on, once the output voltage/current reaches the set value of O.V.P/O.C.P, the instrument will cut off the output, a warning will show on the screen.

Note:

When the instrument disables the output due to protection, after you make some adjustments, the channel must be restarted to output normally.

This function can keep the power output from exceeding the load rating to protect the load.

In the channel setting area, press the OVP / OCP keys to move the red cursor between parameters. After selecting the overvoltage/overcurrent protection value, turn the knob to change the current cursor value, and press the OVP /

OCP direction key to move the cursor position.

4.4 Memory key shortcut settings

Press the Memory key on the front panel to store 4 sets of channel parameters M1, M2, M3, and M4 respectively for quick output.

4.4.1 Quick Output

To output a set of parameters from M1 to M4, follow these steps:

(1) Press Memory key on front panel, the shortcut interface will display.
(2) Turn the knob to move the purple selection box.
(3) After selecting the certain parameter, press the knob to confirm the input value.

4.4.2 Edit

To edit the channel parameters of M1 to M4, follow these steps:

(1) Press Memory key on front panel, the shortcut interface will display.

(2) Turn the knob to move the purple selection box.
(3) Press the V / I / OVP / OCP key to set the voltage / current / over voltage protection / over current protection value.
(4) Turn the knob to change the value of the current cursor, press the knob or press the V / I / OVP / OCP key to move the cursor.

4.5 Set List Waveform Output

The user can edit and output the waveform. A set of waveforms contains 10 editable points. The four editable parameters of each point include output voltage, output current, waveform duration and whether the point is selected. When the editing is completed, the instrument can output the expected waveform according to the time sequence edited by the user.

4.5.1 List Waveform Editing

To edit the List output waveform, the steps are as follows:

(1) Press and hold the Memory function key on the front panel for 3 seconds to enter the "List waveform editing interface";
(2) In the non-parameter setting state, turn the knob to move purple selection box;
(3) Press the V / I / OVP / OCP key to enter the parameter setting state, and set the U / I / T / Y/N;
(4) In the parameter setting state, turn the knob to change the value of

the current cursor, press the knob or press the V / I / OVP / OCP key to move the cursor position; short press the Memory function key on the front panel to exit the parameter setting status;

(5) Press the knob for 3s under non-parameter setting state for confirmation. After entering the "List waveform output mode", List n (n=1\~10) will appear at the upper right corner of the screen; switch back to the main interface at the same time;
(6) Press and hold the Memory function key on the front panel for 3 seconds to exit the "List waveform editing interface".

4.5.2 List Waveform Output

To perform List waveform output, the steps are as follows:

(1) Follow the steps described in "4.5.1 List Waveform Editing" to edit the List waveform;
(2) Enter "List output mode", at this time, the first point of the List waveform pre-output is displayed in the upper right corner, such as "List8";
(3) Short press the On/Off function key on the front panel, the instrument will output according to the List editing time sequence, and the status bar at the top of the main interface will display the current List output point and the countdown of the duration of this point;

(4) In the List output mode, press and hold the Memory function key on the front panel for 3 seconds to exit the "List output mode".

4.6 Set Automatic Output at Power-On

The user can turn on or turn off the "automatic output at power-on" function by pressing and holding the On/Off function key for 3 seconds.

(1) When the "automatic output at power-on" is turned on, after power-on for 3 seconds, the instrument will automatically perform "On/Off" operations, and outputs according to the current output voltage and output current.

(2) When the "automatic output at power-on" is turned off, after power-on, the instrument is in the standby state. The user needs to manually perform the "On/Off" operation, then the instrument will output.

4.7 Display

Press the Display function key to choose to display the measurement data in number or curve.

4.7.1 Number

Press the Display function key to set the display mode to Number. When the power supply is powered on, the default display mode is Curve.

4.7.2 Curve

Press the Display function key to set the display mode to Curve.

5. Troubleshooting

1. The instrument is powered on but no display.Please following the steps:

2. Check if the power is connected properly.

3. 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).
4. Restart the instrument after the steps above.

5. If the problem still exists, please contact us for our service.

6. The output is abnormal:

7. Check if the output voltage is set to 0V. If so, set it to other value.

8. Check if the output current is set to 0A. If so, set it to other value.
9. If the problem still exists, please contact us for our service.

6. Appendix

6.1 Appendix A:Accessories

(The accessories subject to final delivery.)

Standard

Optional:

Banana plug to crocodile clip test lead

6.2 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.

Caution: To avoid any damage to the instrument, do not exposed it to any sprays, liquids, or solvents.

Cleaning

Inspect the instrument as often as operating conditions require. To clean the instrument exterior, perform the following steps:

1. Wipe the dust from the instrument surface with a soft cloth. Take care not to scratch the transparent LCD protection screen when cleaning.

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 avoiding any electric shock or electrical short circuit resulting from moisture.