FNIRSI DPS-150 Portable CNC DC Power Supply

User Notice

This manual provides detailed instructions on how to use the product and important precautions. Please read this manual carefully and use the product according to the instructions to ensure optimal performance.

• Do not use the instrument in flammable or explosive environments.
• Dispose of used batteries and discarded instruments separately according to national or local regulations; do not dispose of them with household waste.
• If you encounter any quality issues with the instrument or have any questions about its use, please contact "FNIRSI" online customer service or the manufacturer, and we will promptly assist you.

1. Product Introduction

The FNIRSI-DSP150 is a high-performance adjustable DC power supply launched by FNIRSI. It features a Type-C input interface and multiple power supply modes, allowing precise adjustment of output voltage (0-30V) and current (0-5A). It provides efficient, low-consumption, and stable output, equipped with multiple safety protection functions including overvoltage, overcurrent, overload, overheating, and reverse connection. It can be flexibly applied to serial connection of multiple devices, with rich and user-friendly display and operation, compact and portable humanized design, meeting various application needs. It is designed to provide you with high-performance and stable CNC power supply.

2. Panel Introduction

The FNIRSI DPS-150 features a 2.8-inch screen and various interfaces and controls:

• DC and Type-C Power Supply Interface: For connecting the power source.
• Switching Gears: For adjusting operational modes or settings.
• Micro Data Transmission Interface: For connecting to a computer for data transfer.
• Screen: A 2.8-inch display showing operational data.
• Run/Pause Button: To start or pause operations.
• Positive and Negative Terminals of the 4.0mm Banana Plug Output Interface: For connecting the load.
• Key Area: Contains various function buttons.
• Adjustment Wheel: For adjusting numerical values and settings.

3. Parameter Introduction

4. Operation Instructions

The device operation involves several buttons and interfaces:

Button Functions:

Operation Steps:

Parameter Adjustment:

1. Press ⏻, once to enter parameter adjustment mode. The highlight will appear at the voltage setting. Press ⏻ again to cycle between output voltage and current settings.
2. Use ➿ and the adjustment wheel to adjust the highlighted numerical value by scrolling left or right.

Preset Data Group Operation:

1. Short press M on the main page to enter the preset data group interface.
2. Press ⏻ once to enter parameter adjustment mode. The voltage setting will be highlighted. Press ⏻ again to cycle between output voltage and current settings.
3. Adjust the highlighted numerical value by scrolling the adjustment wheel left or right using ➿.
4. Short press M again to save.
5. Short press ◀ / ▶ on the main page to switch to the previously preset data group.

Operating Status Operations and Control Panel Lock Status Operations:

1. Short press the ⏻ button to turn on/off output.
2. Long press the ⏻ button to unlock/lock the keypad panel.

Abnormal Working State Prompt:

Red color indication for abnormal status, including overcurrent protection, overvoltage protection, overpower protection, overheat protection, undervoltage protection, and reverse connection protection, followed by output shutdown.

Menu Interface and Operations:

1. Press ⌂ once to enter the menu page.
2. Use ◀ / ▶ to switch between setting pages.
3. Press ⏻ once to enter the setting page, where the highlighted area appears. Adjust the highlighted numerical value by scrolling the adjustment wheel left or right using ➿.
4. After setting is completed, short press ⌂ to save and exit.

5. Instructions for PC Software Use

5.1 Basic Function Interface

• Waveform Display Area: Records, stores, and deletes waveform data, including voltage and current. When viewing a single waveform, you can zoom in and out using the mouse scroll wheel.
• Output Voltage and Current Settings: Change the output voltage and current values of the current preset group (changes are temporary and not saved; the device will revert to initial values after reboot).
• Data Group Data: Click on a data group to set preset voltage and current values. Up to 6 different preset values can be saved.
• Measurement Switch: Measures output capacity and energy. Measurements are reset upon closing and reopening.
• Brightness Settings: 14 levels (Higher level means brighter backlight).
• USB Interface: Product Model/Firmware Version/Communication Rate/Communication Port/Device Address/Online Status
• Basic Information: Input Voltage/Output Voltage/Output Current/Output Power/Temperature Display/Status Display

5.2 Advanced Function Interface

• Sequential Output: Within the specified range of sequence numbers and loop counts, sequentially output voltage and current parameters. Click "Start" to execute sequential output (other interfaces are locked and inactive). Numbers that have been executed show "OK", while numbers that haven't been executed show "Waiting". Click "Pause" to maintain the current sequence output. Click "Continue" to execute subsequent steps according to the set delay. Manual Mode: Click "Single Step" for testing, testing proceeds according to the number of clicks. Stopping will maintain the current sequence output.
• Current Sweep: With fixed voltage, the current is scanned and output within the set range according to the step current and delay, commonly used in constant current mode. Voltage setting needs to be greater than 0V; Starting current, ending current range: 0.000A-5.000A (if the starting and ending values are the same, it's invalid); Step current range: 0.001A-5.000A; Delay time: 1s~86400s. Click "Start" to execute current scanning output (other interfaces are locked and inactive). Click "Stop" to stop the scan and close the output.
• Voltage Sweep: With fixed current, the voltage is scanned and output within the set range according to the step voltage and delay, commonly used in constant voltage mode. Current setting needs to be greater than 0A; Starting voltage, ending voltage range: 00.00V-30.00V (if the starting and ending values are the same, it's invalid); Step voltage range: 00.01V-30.00V; Delay time: 1s~86400s. Click "Start" to execute voltage scanning output (other interfaces are locked and inactive). Click "Stop" to stop the scan and close the output.

5.3 PC Software Connection

1. Turn on the device and connect it to the computer using a Micro data transfer cable.
2. After connection, select the communication port. You can view it through Device Manager in Computer Management.
3. Click "Connect". Once "Connected" is displayed in the left text box, the connection is successful.

NOTE: During the PC software connection process, the device buttons will be locked and cannot be operated.

6. Firmware Upgrade

Method One:

1. Obtain the latest firmware from the official website and download it to the desktop after decompression.
2. Press and hold ⌂, then connect the device to the computer using a Micro data transfer cable to enter firmware upgrade mode. At this point, the computer will recognize the device as a USB flash drive.
3. Copy the firmware to the USB flash drive. After successful copying, the device will automatically start the firmware upgrade process.
4. Observe the upgrade progress percentage. After the upgrade is completed, the device will restart. If the upgrade fails, please contact customer service immediately.

Method Two (Connecting to PC Software):

1. On the device's About page, ensure that the device address matches the device address displayed in the PC software.
2. Connect the device to the computer using a Micro data transfer cable. Confirm the port and click "Connect" on the PC software.
3. Once the connection is successful, click on "Firmware Upgrade" above, then click "BOOT/Re-start."
4. The computer will recognize the device as a USB flash drive. Copy the firmware to the USB flash drive. After successful copying, the device will automatically start the firmware upgrade process.
5. Observe the upgrade progress percentage. After the upgrade is completed, the device will restart. If the upgrade fails, please contact customer service immediately.

7. Precautions

• The product operates in step-down mode, so ensure that the input voltage is higher than the output voltage.
• The power supply range for this product is DC 5V~30V. Output will be disabled if the input voltage is lower than 5.0V due to undervoltage lockout, and the device may be damaged if the input voltage exceeds 30V. It is recommended to use a power supply ranging from 5V to 30V.
• When supplying power to inductive and capacitive loads, it is recommended to connect the load before turning on the device output.
• When outputting high power, some heat generation is normal. It is recommended to use the device in a well-ventilated environment.
• Please remember not to connect power to both power ports of the device simultaneously, as simultaneous power supply may potentially damage the input source with lower voltage.
• When charging batteries, it is strongly recommended to add a reverse current protection module (such as a Schottky diode) to the output end to protect the device from damage.