Introduction
This manual provides detailed instructions for the safe and efficient operation of the Aideepen XY8050S 4000W Programmable DC Buck Converter. Please read this manual thoroughly before use and retain it for future reference.
The XY8050S is a high-power programmable DC-DC step-down power supply module featuring Constant Voltage (CV), Constant Current (CC), and Constant Power (CW) modes. It supports MPPT solar charging, offers a 1.8-inch full-view high-brightness true color LCD display, and includes various protection mechanisms. It also supports Modbus protocol for serial communication and network control via PC host computer or mobile APP (Sinilink).
Safety Information
- Input Power: The input cannot be connected to AC power, let alone 220V mains power. Ensure the unit is OFF before connecting the battery.
- Polarity: Avoid reverse polarity connection to prevent device damage or fire hazards.
- Output: Turn on the output ONLY after the battery icon appears on the screen to initiate charging.
- Environment: Operate the device in a well-ventilated area.
- Maintenance: Do not attempt to disassemble or repair the device yourself. Refer to qualified personnel for service.
- Firmware Upgrade: Do not power off during the product upgrade process. If the product fails, you can press and hold the power button to power on the product and force it into upgrade mode.
Product Overview
The XY8050S is a versatile DC buck converter designed for various applications requiring precise voltage and current control. Key features include:
- Input Voltage: 12.0-90V
- Output Voltage: 0-80V
- Output Current: 0-50.00A
- Power Output: 0-4000W
- Storage Space: 10 groups of data
- Display: 1.8-inch Full-View High-Brightness True Color LCD
- Protection: Input Reverse Polarity Protection, Output Backflow Prevention, LVP, OVP, OCP, OPP, OTP, OHP, OAH, OWH, ETP.
- Communication: Standard Modbus protocol for serial communication, independent dual serial ports, serial port TTL, on-board 485 communication.
- MPPT Solar Charging Support.
- Intelligent temperature-controlled PWM fan with stepless speed regulation.
- Integrated fire-retardant shell with double-buckle design.
- Silicone buttons with indicator lights.
Figure 1: XY8050S DC Buck Power Supply with key features highlighted.
Figure 2: Integrated fire-retardant shell and silicone buttons with indicators.
Specifications
| Parameter | Value |
|---|---|
| Product Name | DC buck- power supply |
| Model | XY8050S |
| Input Voltage | 12.00-90.00V |
| Output Voltage | 0-80.00V |
| Output Current | 0-50.00A |
| Power Output | 4000W |
| Voltage Resolution | 0.01V |
| Current Resolution | 0.01A |
| Accuracy of Voltage | ±0.5%+1 word |
| Accuracy of Current | ±0.5%+3 word |
| Storage Data Group | 10 groups |
| Soft Start | YES |
| Screen Size | 1.8-Inch Full View High-Brightness True Color LCD |
| Output Ripple Typical Value | Vpp-300mV |
| MPPT Function | Support MPPT solar charging |
| Efficiency of Conversion | About 95% |
| Number of Buttons | 5 |
| Screen Instrument Bare Board Size | 86*50*45mm |
| Bare Board Weight | 580g |
| Bare Board Package Product Package | 195*120*67mm |
| Product Weight with Packaging | 650g |
| Product Package Dimensions | 250*120*73mm |
Protection Mechanisms
| Protection Type | Description / Default Value |
|---|---|
| Anti-reverse | YES |
| Output Reverse Current Protection | YES |
| Input Under-Voltage (LVP) | 10-95V, default 10V |
| Over-Voltage (OVP) | 0-87V, default 80V |
| Over-Current (OCP) | 0-52A, default 52A |
| Over-Power (OPP) | 0-4500W, default 4000W |
| Over-Temperature (OTP) | 60-110 °C, default 110 °C |
| Over-Time Out (OHP) | 1 minute - 99 hours 59 minutes, OFF by default |
| Over-Capacity (OAH) | 0-4200KAH, OFF by default |
| Over-Energy (OWH) | 0-4200KWh, OFF by default |
| EXT Over-Temperature (ETP) | 0-110 °C, OFF by default |
Figure 3: Detailed product parameters and protection mechanisms.
Figure 4: Visual representation of the comprehensive protection features.
Setup
Component Identification and Wiring
Familiarize yourself with the main components and connection points of the module:
Figure 5: Main board components and connection points.
- IN+ / IN-: Input power terminals.
- OUT+ / OUT-: Output power terminals.
- Power Switch (hard switch ON/OFF): Physical switch for power control.
- Serial Communication Interface: GND, RX, TX, 5V pins for serial communication.
- 10K NTC 3950B External Temperature Sensor Interface: For connecting an external temperature probe.
- MPPT Hardware Switch: Illuminates upon MPPT activation.
- 0.3-10V Analog Control: Supports analog control, configurable via software. Note: Analog control is only available in numerical control screen mode.
- Output 2-stage filtering: For low ripple output.
- 60A Relay: For output control.
Connecting External Modules
The module supports various external communication and control options:
Figure 6: External module connection options.
- XY-K485X Module: Connect for RS485 bus control.
- WiFi Module: Connect for mobile app and web-based networking control.
- Infrared Receiver Module: Connect for infrared remote control.
- 433M Wireless Remote Control Module: Connect for 433M wireless remote control.
The bare board can be used independently, supporting MPPT and analog 0.3-10V control, with serial communication + on-board 485 communication (both can be used simultaneously). The output voltage is adjustable from 0-85V, and the output current is adjustable from 0-50A.
MPPT Solar Charging Setup
The device supports MPPT solar charging. To use this feature:
Figure 7: MPPT Solar Charging Wiring Diagram.
- Ensure the unit is OFF before connecting the battery.
- Connect the solar panel to the input terminals (IN+ and IN-).
- Connect the battery to the output terminals (OUT+ and OUT-).
- Attach the external temperature probe to the battery. The device will automatically stop charging in case of over-temperature.
- Turn on the output ONLY after the battery icon appears on the screen to initiate charging.
The system supports automatic stop when fully charged and automatic charging at low battery, enabling intelligent battery charging management. It also features BCH automatic charging and BTF full-charge auto-stop function for unattended operation.
Operating Instructions
Button Functions
Figure 8: Universal button functions.
- VSET Button:
- Short Press: Set voltage (CV).
- Long Press: Quickly call up data set M1.
- SW Button:
- Short Press: Enter quick settings.
- Long Press: Enable four-way screen rotation.
- ISET Button:
- Short Press: Set current (CC).
- Long Press: Enter or exit the data group settings UI.
- Encoder Button:
- Short Press: Shift (for digit selection).
- Long Press: Lock the button.
- Power Button (ON/OFF):
- Short Press: Turn power output on/off.
- Long Press: Shut down.
Setting Voltage and Current
Figure 9: Methods for setting voltage and current.
There are three ways to set voltage and current:
- Quick Setup Mode:
- Press the V-SET/I-SET button briefly to enter voltage/current setting mode.
- Use the SW button or encoder button to move between digits.
- Rotate the encoder to adjust the voltage/current value. Once set, press V-SET/I-SET briefly to save and exit.
- Encoder Mode:
- Press the encoder button briefly to activate the parameter (voltage/current) you want to set.
- Press the encoder button to switch between full selection and digit selection. In full selection, all digits are highlighted. Rotate the encoder to switch between setting voltage or current. In digit selection, the selected digit is highlighted. Rotate the encoder to adjust the value.
- To finish, either hold the encoder button/SW button for 2 seconds or wait 6 seconds without any button press. All settings are saved automatically.
- Remote Control Mode:
- Use an infrared remote control or 433M wireless remote control module to set voltage and current directly with the remote's numeric keypad.
Display and Interface Navigation
Figure 10: Various UI screens and navigation.
The 1.8-inch Full-View High-Brightness True Color LCD supports customizable color schemes and 4-way rotation. Use the rotary encoder to turn pages quickly and smoothly between different UI screens such as Main UI, Capacity Record UI, Voltage/Current Curve, Parameter Setting, System Parameter Setting, and Pairing UI.
Figure 11: 360° Display Rotation. Long press the SW button on the main UI to enable four-way rotation.
Figure 12: Display Color Customization. Supports 8 color options to create a unique style.
Data Set Management
Figure 13: Lock function, data set recall, and system parameter adjustment.
- Lock Function: Hold the encoder button for more than 2 seconds to lock the buttons and prevent accidental changes. Hold again to unlock.
- Quickly Recall Data Sets:
- Recall M1 Data Set: Hold the V-SET button to quickly load the M1 data set.
- Select Data Set: Hold the I-SET button to open the data set selection window. Rotate the encoder to choose the data set you want. Then, either hold I-SET or briefly press the SW/encoder button to load the selected data set. The interface will show the currently loaded data set.
- Quickly Adjust System Parameters in the Status Bar:
- On the main screen, briefly press the SW button to select a status bar parameter.
- Rotate the encoder to switch between parameters.
- Briefly press the SW button or encoder button to adjust the parameter or open the parameter setting interface. Use the encoder to set the value.
- To save and exit, either hold the SW button or wait 6 seconds without any button press. All settings are saved automatically.
CV CC CW Features Introduction
Figure 14: CV CC CW Features.
- When the constant power function is not turned on: The power supply only has the functions of constant voltage (CV) and constant current (CC), which automatically switch based on the load.
- When the load current is less than the set constant current value, the power supply is in the constant voltage mode, where the output voltage is the set voltage value (CV), and the current is adaptive.
- When the load current is less than the set constant current value, the power supply is in the constant voltage mode, where the output voltage is the set voltage value (CV), and the current is adaptive.
- After the constant power function is turned on: The constant current value defaults to the maximum value, and the constant voltage value (CV) serves as the initial voltage (set to a reasonable value based on actual conditions). After the power supply is turned on, the equivalent resistance R of the load is calculated using Ohm's law R=U/I. Then, the corresponding voltage can be calculated based on the set constant power value using the power formula P=U²/R. At this point, the power point algorithm automatically follows, and the constant power is achieved.
Constant Power Switch and Constant Power Value Setting:
- In the system parameter settings UI, select the CW option. Turn ON to enable constant power, and turn OFF to disable constant power.
- After enabling constant power, press ISET briefly on the main interface to modify the value of constant power.
Group Control Function
The digital control panel supports one-to-many group control via the 485 bus.
Figure 15: Digital control panel supporting one-to-many group control.
To activate the Group Control Function:
- On the main power supply interface, briefly press the SW button to select the right status bar.
- Rotate the encoder to choose the group control switch activation icon.
- Then briefly press the encoder button to open the selection dialog.
- Press the SW or encoder button to select and rotate the encoder to ON to enable group control mode.
When setting voltage, current, or power on/off, the changes will automatically synchronize to all devices on the 485 bus. Note: Device addresses on the bus must be unique. Hold the SW button or wait 6 seconds without operation to exit and save settings automatically.
Figure 16: Low-cost communication power supply with onboard 485 communication.
Network Control and Software
The module supports LAN penetration, real-time communication, and remote control via an external network with unlimited distance. It also supports email notifications and cloud records.
Figure 17: Network control anytime, anywhere.
A complete set of complementary commercial software is available for multi-serial port host computer control. This software offers:
- Unlimited Device Connectivity: Control up to 247 devices connected to a single serial port. Utilizing multiple serial ports enables control of thousands of devices in a clustered environment.
- Batch Control: Batch control of all devices under a specific account, including voltage, current, switches, and other parameters.
- Administrative Accounts: Management accounts can be added for more secure and controlled access to voltage and current settings.
Figure 18: Multi-serial port host software interface.
Note: The software is constantly being upgraded, and the interface is mainly the latest version.
Firmware Upgrades
The module supports firmware upgrades to experience new features.
Figure 19: Firmware upgrade process.
At present, it only supports firmware upgrade through the WiFi module. In the future, it will also be able to upgrade through the multi-serial port host computer software (under development). Do not power off during the product upgrade process. If the product upgrade fails, you can press and hold the power button to power on the product and force it into the upgrade mode.
Video Demonstration
Video 1: Demonstration of smooth operation, setting voltage and current, current accuracy, resetting capacity/energy/runtime, navigating data set parameters, system parameters, quick recall of data sets, right status bar shortcuts, and remote control operation.
Maintenance
- Cleaning: Use a soft, dry cloth to clean the device. Do not use abrasive cleaners or solvents.
- Storage: Store the device in a cool, dry place away from direct sunlight and extreme temperatures.
- Fan Maintenance: The intelligent temperature-controlled PWM fan helps maintain optimal operating temperature. Ensure the fan vents are not obstructed to allow for proper airflow.
Troubleshooting
- No Power:
- Check input voltage connections and ensure they are within the specified range (12.00-90.0V).
- Verify the power switch is in the ON position.
- No Output:
- Ensure the output is turned ON via the power button.
- Check for any active protection mechanisms (OVP, OCP, etc.) indicated on the display. Adjust settings or resolve the underlying issue.
- For solar charging, ensure the battery icon appears before turning on the output.
- Inaccurate Readings:
- Verify all connections are secure.
- Ensure the device is operating within its specified limits.
- Firmware Upgrade Failure:
- Do not power off during the upgrade. If it fails, press and hold the power button to force it into upgrade mode and retry.
- Communication Issues (Serial/WiFi/485):
- Check physical connections of the respective modules.
- Ensure correct software settings and unique device addresses for 485 bus control.
User Tips
- When using the module for solar charging, always connect the battery first and ensure the battery icon is displayed before enabling output to prevent damage.
- For precise current setting, especially when dealing with sensitive loads, utilize the encoder mode for fine-tuning the digits.
- Take advantage of the 10 data groups to save frequently used voltage/current settings for quick recall.
- If using multiple modules with 485 bus control, double-check that each module has a unique address to ensure proper communication and synchronization.
Warranty and Support
This product is covered by a standard manufacturer's warranty. For technical support, troubleshooting assistance, or warranty claims, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.
