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UNI-T UDP6720 Series User Manual
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UNI-T UDP6720 Series User Manual

UNI-T UDP6720 Series User Manual

Programmable dc power supply
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User's Manual
UDP6720 Series Programmable DC Power Supply
V1.3
July, 2025

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Summary of Contents for UNI-T UDP6720 Series

  • Page 1 User’s Manual UDP6720 Series Programmable DC Power Supply V1.3 July, 2025...
  • Page 2 UDP6720 Series Programmable DC Power Supply Foreword Thank you for choosing this UNI-T instrument. For safe and proper use this instrument, please read this manual carefully, especially the safety instructions section. After reading this manual, it is recommended to keep the manual in a convenient location, preferably near the device, for future reference.
  • Page 3 User’s Manual UDP6720 Series Programmable DC Power Supply It indicates danger of electric shock, which may cause personal Danger injury or death. It indicates that there are factors you should be cautious of to Warning prevent personal injury or product damage.
  • Page 4 User’s Manual UDP6720 Series Programmable DC Power Supply Certificatio CE indicates a registered trademark of EU. Certificatio UKCA indicates a registered trademark of United Kingdom. Certificatio Conforms to UL STD 61010-1 and 61010-2-030. Certified to CSA STD C22.2 No.61010-1 and 61010-2-030.
  • Page 5 If this device may be faulty, please contact the authorized maintenance Abnormality personnel of UNI-T for testing. Any maintenance, adjustment or parts replacement must be done by the relevant personnel of UNI-T. Do not block the ventilation holes at the side and back of this device.
  • Page 6 UDP6720 Series Programmable DC Power Supply 3 Product Overview UDP6720 Series programmable DC power supply is switching power supply with wide span. The model is small, light and powerful. It adopts LCD, so the parameter can be display directly and easy to use; the product can be applied to the field of automatic test system, R&D, laboratory, teaching experiment, phone and home...
  • Page 7 User’s Manual UDP6720 Series Programmable DC Power Supply Voltage: <50mVpp Ripple noise (20Hz~20MHz) Current: <15mArms 0.02%/℃+10mV Temperature coefficient 0.03%/℃+10mA Storage List function 40*200 Display mode 4.3"TFT LCD Interface RS232/RS485/USB Host/USB Device/LAN √ Communication SCPI/MODBUS protocol Power voltage AC 220V±10% Frequency 50Hz/60Hz Size (W×H×D)
  • Page 8 User’s Manual UDP6720 Series Programmable DC Power Supply Fall time (full load) <0.15S Transient Response <500uS Readback Voltage: 0.01%+10mV Temp.coefficient Current: 0.03%+20mA (%Output/°C+Offset) Voltage: 0.03%+20mV Setting stability-30min Current: 0.1%+40mA Voltage: 0.03%+20mV Setting stability-8h Current: 0.1%+40mA Voltage: 0.03%+20mV Readback stability-30min Current: 0.1%+40mA Voltage: 0.03%+20mV...
  • Page 9 User’s Manual UDP6720 Series Programmable DC Power Supply Voltage: 100mV Setting Resolution Current: 10mA Setting Accuracy(25℃±5℃) Voltage: <0.03%+100mV ±(％of Output+Offset) Current: <0.1%+20mA Voltage: 100mV Readback resolution Current: 10mA Readback accuracy(25℃±5℃) Voltage: <0.03%+200mV ±(％of Output+Offset) Current: <0.1%+20mA Voltage: <150mVpp Ripple and noise (20Hz~20MHz) Current: <30mArms...
  • Page 10 User’s Manual UDP6720 Series Programmable DC Power Supply Efficiency Fuse 0.98 Max Input Current Maximum Apparent Power 1100VA 2000VA Withstand Voltage 500V UDP6723G UDP6724G Rated output voltage 0~600V Rated output current 0~5A Output power 850W 1500W Load regulation Voltage: <0.01%+100mV ±(％of Output+Offset)
  • Page 11 User’s Manual UDP6720 Series Programmable DC Power Supply Current: 0.1%+20mA Voltage: 0.03%+10mV Setting stability-8h Current: 0.1%+20mA Voltage: 0.03%+10mV Readback stability-30min Current: 0.1%+20mA Voltage: 0.03%+10mV Readback stability-8h Current: 0.1%+20mA OVP、OCP、OTP Protection Storage List Function 40*200 Screen 4.3"TFT LCD Interface RS232/RS485/USBHost/USBDevice/LAN U disk...
  • Page 12 User’s Manual UDP6720 Series Programmable DC Power Supply 4. Product Introduction 4.1 Front Panel UDP6722: UDP6723&24&23B&24B: Instruments.uni-trend.com 12 / 38...
  • Page 13 User’s Manual UDP6720 Series Programmable DC Power Supply UDP6723G/UDP6724G Figure 4-1 Front Panel Item Description Power switch Turn on/off the power Function will be change according to the display menu on the Functional keys screen Output port Power output port on front panel...
  • Page 14 User’s Manual UDP6720 Series Programmable DC Power Supply 4.2 Rear Panel UDP6722: UDP6723&24&23B&24B: Instruments.uni-trend.com 14 / 38...
  • Page 15 User’s Manual UDP6720 Series Programmable DC Power Supply UDP6723G/UDP6724G: Figure 4-2 Rear Panel Item Description LAN interface USB Type-B interface DB9 female head port RS232C and RS485 common communication interface Power socket Fuse specifications: Power input port and fuse T5AL250V UDP6722 T15AL250V UDP6723&24&23B&24B...
  • Page 16 Before using the instrument, 1. Check the appearance whether is damaged or scratched; 2. Check the packing list if has loss. If the product is damaged or accessory is missing, please contact UNI-T sales department or distributor. 5.2 Power Requirements UDP6720 Series DC power supply can only be used under the following power conditions.
  • Page 17 User’s Manual UDP6720 Series Programmable DC Power Supply Do not clean the internal of the instrument. Note: Do not use solvent (alcohol or gasoline) to clean instrument. 5.5 Handle Handle is adjustable and can adjust to four positions, hold two sides of the handle to pull or rotate as shown in the following figure.
  • Page 18 User’s Manual UDP6720 Series Programmable DC Power Supply UDP6723&24&23B&24B) 5.8 Remote Sensing When the power output current is too large or the connecting line is too long, a large voltage drop will be generated on the connection line, resulting in a decrease in the voltage obtained by the load. This series provides a remote compensation terminal on the rear panel, which can compensate for the line loss of the connecting line, so that the voltage at the load end is equal to the voltage set by the power supply.
  • Page 19 User’s Manual UDP6720 Series Programmable DC Power Supply 6. <Test> 6.1 Measure The instrument will enter <Measure> page when boot up. The page is used to set and display the basic parameter of power. Press ESC key multiple times in arbitrary interface can back to <Measure> page Figure 6-1 <Measure>...
  • Page 20 User’s Manual UDP6720 Series Programmable DC Power Supply Icon on Status Bar Picture Description Power output has turned off Blinking: the power is outputing Power output has turned off Power output is operating CV mode Power output is operating CC mode...
  • Page 21 User’s Manual UDP6720 Series Programmable DC Power Supply 7 . Setup Press [Delayer] two times to enter setup page. The page can set other setup for power output. <Setup> Page Figure 7-1 < Setup> Page Item Setting Description The instrument will stop output when it...
  • Page 22 User’s Manual UDP6720 Series Programmable DC Power Supply Figure 8-1 <List Setup> Basic Parameter Setup <List Setup> Item Setting Description The currently loading list file, press [Save] shortcut key to FileNum enter <ListFile> to save and recall the file. Select the line to start the test from the list on the right...
  • Page 23 User’s Manual UDP6720 Series Programmable DC Power Supply Local File Enter List File (Local) Udisk .LIST Enter Udisk .LIST file Udisk .CSV Enter Udisk .CSV file Press [Sheet] key to enter Sheet setup. Figure 8-2 Parameter Setup of List Output...
  • Page 24 User’s Manual UDP6720 Series Programmable DC Power Supply 9. List File List file includes the local file and USB file; Press the functional key below the <Measure > interface and press [File] key to enter file management page. 9.1 List File (Local)
  • Page 25 User’s Manual UDP6720 Series Programmable DC Power Supply digits, press [Ent] key to confirm the setting. The default filename cannot be renamed. > Switching the subordinate shortcut key menu. On: The instrument will recall the file after the instrument boots up.
  • Page 26 User’s Manual UDP6720 Series Programmable DC Power Supply After the file is modified, save it as CSV file and put it into the \UDP67XX\LIST\ folder of the U disk, where UDP67XX is the corresponding machine model, insert the U disk into the USB2.0 interface of the front panel of the machine, and import it into the machine.
  • Page 27 User’s Manual UDP6720 Series Programmable DC Power Supply 10 Delayer Setup Delayer is the simple version of list mode. If the local status is ON, the instrument outputs the parameter according to <Measure >. If the local status is off, the instrument will turn off the output. Press [Delayer] can step through <Measure>, <Delayer>, and stay at <Delayer>...
  • Page 28 User’s Manual UDP6720 Series Programmable DC Power Supply Press [Sheet] key to enter the parameter setup of delayer output. Figure 10-2 Parameter Setup of Delayer Output. Shortcut key of delayer Shortcur Key Setting Description Swithc to the basic parameter setup on the left side after Basic press this key.
  • Page 29 User’s Manual UDP6720 Series Programmable DC Power Supply 11. Delayer File Delayer file only save the parameter in <Delayer Setup> page, it can save on local or in USB. The local file can also export to USB. 11.1 Delayer File (Local) Figure 11-1 Delayer File (Local) If the USB is inserted, press [Udisk File] shortcut key to manage the delayer file in USB.
  • Page 30 User’s Manual UDP6720 Series Programmable DC Power Supply 11.2 Delayer File (Udisk) Figure 11-2 Delayer File (Udisk) If press [Local File] shortcut key or plug out USB, the interface will switch to local page. Delayer file in USB only supports the operating of load, save, delete and rename.
  • Page 31 User’s Manual UDP6720 Series Programmable DC Power Supply 13. File Management File management is support to save the parameter of list and delayer and also support USB operation. Press [File] shortcut key below in <Measure > to enter <File Management> page.
  • Page 32 User’s Manual UDP6720 Series Programmable DC Power Supply 13.2 File Management (USB) If press [Local File] shortcut key or plug out USB, the interface will switch to local page. File management in USB only supports the operating of load, save, delete and rename. (The operation is same as Local file.)
  • Page 33 User’s Manual UDP6720 Series Programmable DC Power Supply RS232, RS485 and USB are serial port and the format RS232, RS485, LAN, as follow, CommBus 8 data bits, 1 stop bit, no check bit. USB is virtual serial port. The instrument supports the communication...
  • Page 34 User’s Manual UDP6720 Series Programmable DC Power Supply 15. Remote Communication 15.1 RS-232 Port Setup 15.1.1 RS-232 RS-232 is the current widely used serial communication, it also known as the asynchronous communication. It is used for data communication between computers and computers, computers and peripherals.
  • Page 35 User’s Manual UDP6720 Series Programmable DC Power Supply 15.1.2 RS-232 Connecting The instrument uses DB9 (femal head) interface. Suggestion: To avoid electric shock, please turn off the power supply when plug the connector. Figure 14-1 Interface Definition of DB9 (femal head) Front View Connecting the instrument to PC via a direct line that has DB9 male head and DB9 femal head.
  • Page 36 When USB bus is enabled and connecting to PC, user can find serial port number in PC management. Due to the different manchines, the serial port number of each PC is not necessarily the same. 15.5 Language Communication supports SCP1 and Modbus commands, the detailes refers to “UDP6720 Series Programmable DC Power Supply- Programming Manual”. Instruments.uni-trend.com...
  • Page 37 User’s Manual UDP6720 Series Programmable DC Power Supply 16. Appendix 16.1 Appendix A Maintenance and Cleaning General Maintenance Keep the instrument away from the direct sunlight. Caution Keep sprays, liquids and solvents away from the instrument or probe to avoid damaging the instrument or probe.
  • Page 38 This manual contains information that replaces all earlier published versions. The product information in this document subject to update without notice. For more information on UNI-T Test & Measure Instrument products, applications, or service, please contact UNI-T instrument for support, the support center is available on www.uni-trend.com ->instruments.uni-trend.com...

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