1. Introduction
The XY6506/XY6509 is a third-generation upgraded CNC adjustable DC buck power supply module designed for constant voltage and constant current applications, including solar charging. It features an all-viewing-angle VA color LCD screen for clear display of parameters and supports various control methods.
Figure 1: XY6509 Model Overview with Key Specifications
Key Features:
- High-quality PCB materials for enhanced durability.
- VA color LCD screen (over 1.8 inches, 38*29mm visual range) with large, clear fonts.
- Integrated molded frosted panel and high-quality aluminum alloy knob cap.
- Built-in buzzer for key and alarm prompts.
- Upgraded plug-in terminals for easy disassembly and replacement.
- MPPT function for solar charging.
- Support for external temperature probe for over-temperature protection.
- Multiple control interfaces: RS485 bus, WiFi (APP/web-based), Infrared, 433M wireless remote control.
- Dual inductance design with high-power, high-temperature resistant FeSiAl magnetic ring inductors.
- Output 2-stage RC filtering.
- Intelligent temperature-controlled fan with large-area ventilation heat sinks.
2. Specifications
General Specifications:
| Parameter | Value |
|---|---|
| Product Name | DC Buck Power Supply |
| Input Voltage | 12~72.00V |
| Output Voltage | 0~65.00V |
| Voltage Accuracy | ±0.5%+1 word |
| Current Accuracy | ±0.5%+3 word |
| Voltage Resolution | 0.01V |
| Current Resolution | 0.001A |
| Storage Data Groups | 10 groups |
| Soft Start | YES |
| Screen Size | Over 1.8-inch LCD (38*29mm) |
| Output Ripple Typical Value | vpp-150mv |
| MPPT Function | Support MPPT solar charging |
| Buzzer | YES |
| Efficiency of Conversion | About 95% |
| Number of Buttons | 5 |
Model-Specific Specifications:
| Parameter | XY6506 | XY6509 |
|---|---|---|
| Output Current | 0~6.000A | 0-9.000A |
| Power Output | 390W | 585W (up to 600W with optimal cooling) |
| Product Size | 79*50*43mm | 79*50*43mm |
| Product Weight | 114g | 108g |
| Finished Product Weight | 302g | 308g |
Protection Mechanisms:
| Protection Type | Description |
|---|---|
| Anti-reverse | YES |
| Under-voltage (LVP) | Adjustable 10-75V, default 10V |
| Over-voltage (OVP) | Adjustable 0-67V, default 67V |
| Over-current (OCP) | Adjustable 0-9.2A (XY6509), 0-6.2A (XY6506) |
| Over-power (OPP) | Adjustable 0-650W (XY6509), 0-420W (XY6506) |
| Over-temp (OTP) | Adjustable 0-110°C, default 95°C |
| Over-time out (OHP) | Adjustable 1 min - 99 hrs 59 mins, default OFF |
| Over-capacity (OAH) | Adjustable 0-9999Ah, default disabled |
| Over-energy (OPH) | Adjustable 0-4200KWh, default disabled |
Figure 2: Product and Package Dimensions
3. Setup
Physical Installation:
The module has a product size of 79mm (L) x 50mm (W) x 43mm (H). The recommended opening size for panel mounting is 71.6mm x 39.6mm. Ensure adequate space for the intelligent temperature-controlled fan and heat sinks for optimal performance.
Figure 3: Air Inlet and Heat Dissipation
Wiring and Connections:
The module features plug-in terminals for IN+ (Input Positive), IN- (Input Negative), OUT+ (Output Positive), and OUT- (Output Negative). It also includes a PD interface, a power battery interface, a DC5.5*2.5 plug, and a spare expansion port.
Figure 4: Functional Interfaces and Wiring Diagram
- Input Voltage: Connect your DC power source (6.0-70V) to the IN+ and IN- terminals.
- Output: Connect your load to the OUT+ and OUT- terminals.
- PD Interface: Automatically activates 20V high voltage output when a PD charging head is inserted.
- External Temperature Probe: An NTC 3950B external temperature sensor interface is available. Connect an external temperature probe to this interface for over-temperature protection, especially during battery charging. The battery icon will display on the screen when connected.
- Remote Control: The module supports various remote control options:
- RS485 Bus Control: Connect an XY-K485X module.
- WiFi Remote Control: Connect a WiFi module for APP and web-based networking control.
- Infrared Remote Control: Connect an infrared receiver module for efficient and fast control.
- 433M Wireless Remote Control: Use a 433M wireless remote control module for synchronous control of multiple devices.
Important Safety Note: This product does not have output reverse connection protection. Reversing the positive and negative terminals of the battery will damage the device. Battery charging requires professional knowledge; non-professionals should not charge batteries directly to prevent fire and explosion.
4. Operating Instructions
The module features a main UI with VSET, SW, ISET buttons, an encoder button, and a power button. The LCD displays voltage, current, power, and other parameters.
Figure 5: Product UI Function Details
4.1. Button Functions:
- VSET Button:
- Short Press: Set voltage (CV).
- Long Press: Enter or exit the data group UI.
- SW Button:
- Short Press: Switch between input/output voltage or shift during setting.
- Long Press: Enter or exit the system settings UI.
- ISET Button:
- Short Press: Set current (CC).
- Long Press: Enter or exit the data group settings UI.
- Encoder Button:
- Short Press: Switch between displaying power (W), capacity (Ah), energy (Wh), time (h), and temperature (°C).
- Long Press: Turn on/off the key lock.
- Power Button:
- Short Press: Turn on/off the power output.
- Long Press: Reset capacity (Ah), energy (Wh), and time (h) displays.
4.2. Setting Voltage and Current:
Figure 6: Setting Voltage and Current
- On the main UI, short press the VSET button to set the voltage. The LCD will display "SET" in the lower row, and "CV" will flash to indicate the voltage setting position is selected and blinking.
- Then, short press the SW button or rotate the encoder button to switch the voltage setting position. Adjust the value by rotating the encoder.
- After setting is complete, short press the VSET button to exit and save.
- To set the current, short press the ISET button, and the setting steps are the same as for voltage.
4.3. Quick Setting of Voltage or Current (FEr CU):
In the system parameter settings UI (accessed by long pressing SW), set the parameter FEr CU to CV or CC. Rotate the encoder on the main UI to quickly set the voltage or current.
4.4. Data Group Function:
This product has a total of 10 data groups from Cd0 to Cd9. Press and hold the VSET button on the main UI to access the data group UI.
Figure 7: Data Group Function and Display Lock
- You can press VSET/ISET briefly to switch between constant voltage (CV) and constant current (CC) settings within the data group.
- It supports quick viewing and modification of voltage and current in the data group, as well as SW shift operation.
- After confirming the data group, press and hold the VSET/SW button or press the encoder button briefly to select the desired data group.
4.5. System Parameter Settings:
Long press the SW button to enter the system parameter settings UI. Use VSET to select the next parameter, and ISET to select the previous parameter. Adjust values with the encoder. Hold SW/encoder to exit.
Figure 8: System Parameter Settings
| Parameter | Description | Default |
|---|---|---|
| bEP (Buzzer) | Turn ON/OFF the buzzer | ON |
| b-L (LCD brightness) | Adjust LCD brightness (0-5) | 5 (brightest) |
| C-F (Celsius/Fahrenheit) | Select temperature unit | C |
| FEr CU (Quick adjustment) | Quick voltage (CV), current (CC) adjustment, or OFF | CV |
| Add (Device address) | Set device address (001-255) | 001 |
| bRE (Baud rate) | Set communication baud rate (1200-115200) | 115200 |
| PPt (MPPT solar charging) | Enable/Disable MPPT solar charging | OFF |
| -CP- (Constant Power) | Enable/Disable Constant Power function | OFF |
| btP (Charging cut-off current) | Set charging cut-off current | OFF |
| CLU (Calibrate output voltage) | Calibrate output voltage (-5.00V to +5.00V) | 0.00V |
| CLA (Calibrate output current) | Calibrate output current (-5.00A to +5.00A) | 0.00A |
| ZErO (Current zero calibration) | Perform current zero calibration | 0.000A |
| CLOF (Force power output off) | Force power output to turn off when retrieving data groups | OFF |
| rEt (Restore factory settings) | Restore all settings to factory defaults | NO |
| VEr (Firmware version) | Displays current firmware version | N/A |
4.6. Understanding CV/CC/CW Functions:
Figure 9: CV/CC/CW Functions
- Constant Voltage (CV): When the constant power function is not enabled, if the load current is less than the set constant current value, the power supply operates in constant voltage mode. The output voltage will be the set CV value, and the current will adapt to the load.
- Constant Current (CC): When the constant power function is not enabled, if the load current exceeds the set constant current value, the power supply automatically enters constant current mode. The output current will be the set CC value, and the voltage will adapt to the load.
- Constant Power (CW): When the constant power function is enabled, the constant current defaults to its maximum value. The constant voltage (CV) value serves as the initial voltage (set to a reasonable value based on actual conditions). The corresponding voltage can be calculated based on the set constant power value using Ohm's law (P=U²/R). The constant power point algorithm automatically tracks the load to maintain constant power.
4.7. Display Lock:
To lock the set voltage and current and prevent accidental modification, press and hold the encoder button for 2 seconds. Repeat the action to unlock.
4.8. Video Demonstration:
Video 1: Basic Operation Demonstration (Setting Voltage/Current, Display Modes, Locking)
5. Maintenance
The module is designed with an intelligent temperature-controlled fan and heat sinks to manage heat dissipation. Ensure that the air inlet on the front and the exhaust fan at the rear are not obstructed to maintain efficient and reliable operation.
Keep the device clean and free from dust. Use a soft, dry cloth for cleaning. Do not use liquids or abrasive cleaners.
6. Troubleshooting
Protection Mechanism Activation:
The device includes several protection mechanisms (LVP, OVP, OCP, OPP, OTP, OHP, OAH, OPH) which can be configured in the system settings. If the output unexpectedly shuts off, check the display for any active protection indicators. Adjust the protection thresholds if necessary, or resolve the underlying issue (e.g., reduce load, improve cooling).
Firmware Upgrade:
The product supports firmware upgrades via a WiFi module. Future upgrades may also be available through multi-serial port host computer software.
Figure 10: Firmware Upgrade Process
Important: Do not power off the device during the firmware upgrade process. If the product upgrade fails, press and hold the power button to force it into upgrade mode, then attempt the upgrade again.
7. User Tips
No specific user tips from reviews or Q&A are available at this time. However, based on product features:
- For precise voltage and current control, utilize the encoder for fine adjustments.
- Save frequently used voltage/current settings into the 10 available data groups for quick recall.
- When using the MPPT solar charging function, ensure the external temperature probe is correctly connected to prevent battery damage from overheating.
- If experiencing issues with remote control, verify the correct module (WiFi, RS485, IR, 433M) is connected and configured according to its specific instructions.
8. Warranty and Support
For any technical assistance, troubleshooting beyond this manual, or warranty inquiries, please contact the seller or manufacturer directly. Keep your purchase records for reference.