1. Introduction
The XY6506/XY6509 DC Buck Converter is a versatile and high-precision adjustable regulated laboratory power supply. It features a clear all-viewing-angle VA color LCD for easy monitoring and control. This module supports constant voltage (CV), constant current (CC), and constant power (CW) modes, making it suitable for various applications including MPPT solar charging. It also supports serial communication with the standard Modbus protocol and firmware upgrades for enhanced functionality.
2. Specifications
| Feature | Specification | Feature | Specification |
|---|---|---|---|
| Product Name | DC Buck Power Supply | Model | XY6509 |
| Input Voltage | 12-72V | Output Voltage | 0-65V |
| Output Current | 0-9.000A | Power Output | 585W |
| Voltage Accuracy | ±0.5% + 1 word | Current Accuracy | ±0.5% + 3 words |
| Voltage Resolution | 0.01V | Current Resolution | 0.001A |
| Storage Data Group | 10 groups | Soft Start | YES |
| Screen Size | Over 1.8-inch LCD (38*29mm visual range) | Output Ripple Typical Value | Vpp-150mV |
| MPPT Function | Support MPPT solar charging | Buzzer | YES |
| Efficiency of Conversion | About 95% | Number of Buttons | 5 |
| Product Size | 79*50*43mm (Without casing) | Product Weight | 108g |
| Package Size | 104*70*52mm | Package Weight (Included) | 127g |
Protection Mechanisms
- Input Anti-Reverse Connection: Yes
- Input Undervoltage Protection (LVP): Adjustable 10-75V, default 10V
- Output Over-Voltage Protection (OVP): Adjustable 0-67V, default 67V
- Output Overcurrent Protection (OCP): Adjustable 0-9.2A, default 9.2A
- Output Over Power Protection (OPP): Adjustable 0-650W, default 650W
- Over Temperature Protection (OTP): Adjustable 0-110°C, default 95°C
- Overtime Protection (OHP): 1 minute - 99 hours 59 minutes, default off
- Over Capacity Protection (OAP): Adjustable 0-9999Ah, default off
- Over-Energy Protection (OPH): Adjustable 0-4200KWH, default off
3. Setup and Connections
Before connecting the device, ensure all power sources are off. Connect the input and output terminals carefully, observing polarity. The module supports various input interfaces and can be integrated into different systems.
3.1 Physical Dimensions and Mounting
3.2 Input and Output Interfaces
3.3 Wiring and External Connections
4. Operating Instructions
The device features a user-friendly interface with several buttons and an encoder for precise control.
4.1 Button Functions
- VSET Button:
- Short Press: Set voltage (CV mode).
- Long Press: Enter or exit the data group UI.
- SW Button:
- Short Press: Switch between input/output voltage display or shift digits during setting.
- Long Press: Enter or exit the system settings UI.
- ISET Button:
- Short Press: Set current (CC mode).
- Long Press: Enter or exit the data group settings UI.
- Encoder Button:
- Short Press: Switch between displaying output power (W), capacity (Ah), energy (Wh), time (h), and temperature (°C) in rotation.
- Long Press: Turn on/off the key lock.
- Power Button:
- Short Press: Turn on/off the power output.
- Long Press: Reset the capacity (Ah) / energy (Wh) / time (h) UI.
4.2 Basic Operation (Setting Voltage and Current)
Video 1: Demonstration of basic operations including power on, setting voltage and current, and using the encoder.
- Power On: Connect the input power supply. The device will boot up and display the current settings.
- Set Voltage:
- Short press the VSET button. The voltage display will become editable.
- Short press the SW button to shift between digits.
- Rotate the Encoder to adjust the desired voltage value.
- Set Current:
- Short press the ISET button. The current display will become editable.
- Short press the SW button to shift between digits.
- Rotate the Encoder to adjust the desired current value.
- Rapid Adjustment: Rotate the encoder quickly for larger adjustments.
- Toggle Display: Short press the Encoder button to cycle through output power (W), capacity (Ah), energy (Wh), time (h), and temperature (°C).
- Lock Operation: Long press the Encoder button to lock/unlock the operation, preventing accidental changes.
4.3 Data Group and System Settings
- Enter Data Group UI: Long press the VSET button. Rotate the Encoder to select the desired data group (e.g., Cd0, Cd1, etc.).
- Enter Data Group Parameter Setting UI: Long press the ISET button to access parameters like OVP, OCP, OPP, OHP, OAP, OPH for the selected data group.
- Enter System Parameter Setting UI: Long press the SW button to access system-wide settings (e.g., buzzer on/off, address for communication).
5. Maintenance
To ensure optimal performance and longevity of your DC Buck Converter, follow these maintenance guidelines:
- Cleaning: Keep the device clean and free from dust. Use a soft, dry cloth to wipe the exterior. Do not use liquid cleaners or solvents.
- Ventilation: Ensure the exhaust fan and air inlets are not obstructed to allow for proper heat dissipation.
6. Troubleshooting
This section provides solutions to common issues you might encounter with the XY6506/XY6509 DC Buck Converter.
6.1 Protection Mechanism Triggers
The device includes several protection mechanisms. If the output unexpectedly shuts off or behaves abnormally, check the following:
- Input Undervoltage Protection (LVP): Ensure the input voltage is above the set LVP threshold. Adjust the LVP setting if necessary.
- Output Over-Voltage Protection (OVP): Verify that the output voltage does not exceed the set OVP limit.
- Output Overcurrent Protection (OCP): Check if the load is drawing more current than the set OCP limit. Reduce the load or increase the OCP setting.
- Output Over Power Protection (OPP): Ensure the output power does not exceed the set OPP limit.
- Over Temperature Protection (OTP): Check for proper ventilation and ensure the device is not overheating. The default OTP is 95°C.
- Overtime Protection (OHP): If enabled, check if the operation time has exceeded the set OHP duration.
- Over Capacity Protection (OAP) / Over-Energy Protection (OPH): If enabled, check if the accumulated capacity or energy has exceeded the set limits.
If a protection mechanism is triggered, the device will typically indicate the fault on the display. Address the underlying cause before resuming operation.
6.2 Communication Issues
If you are experiencing issues with serial communication (Modbus protocol) or network control:
- Verify all connections for the serial communication interface (refer to Figure 6).
- Ensure the correct Modbus parameters (address, baud rate) are configured in the system settings.
- For network control via WiFi module or APP, ensure the module is correctly connected and configured, and that your network is stable.
7. User Tips
- Accuracy: The device offers high accuracy for both voltage and current settings. For critical applications, it's always good practice to cross-verify readings with a calibrated multimeter.
- Display Readability: The VA color LCD provides excellent readability from all viewing angles, making it easy to monitor parameters even in challenging lighting conditions.
- MPPT for Solar: When using the MPPT function for solar charging, ensure your solar panel's voltage range is compatible with the converter's input voltage range (12-72V).
- Buzzer Feedback: The built-in buzzer provides audible feedback for button presses and alarm prompts, which can be helpful during operation.
- Data Storage: Utilize the 10 data groups to save frequently used voltage and current settings for quick recall.
8. Warranty and Support
Information regarding warranty, returns, and customer support is typically provided by the seller or manufacturer at the point of purchase. Please refer to your purchase documentation or contact the seller directly for details on warranty coverage, technical assistance, and service options.
