1. Introduction
This manual provides comprehensive instructions for the Diymore XY6530S and XY6550S Digital DC Step-Down Power Supply modules. It covers features, specifications, setup, operation, protection mechanisms, and advanced functionalities like MPPT solar charging, serial communication, and network control. Please read this manual carefully before operating the device to ensure safe and efficient use.
2. Key Features
- Supports firmware upgrades, MPPT solar charging, and serial communication.
- Full-view 1.8-inch high-brightness true-color LCD with customizable color scheme and 4-way rotation.
- Comprehensive protection: input reverse polarity protection, output backflow prevention.
- Display board features gold-plated design for oxidation resistance, enhanced conductivity, and durability.
- Intelligent temperature-controlled PWM stepless speed fan with low noise and large-area heat sink.
- Supports standard Modbus protocol for serial communication.
- Independent dual serial ports (TTL and on-board 485 communication).
- Network control anytime, anywhere via LAN penetration, real-time communication, email notification, and cloud record.
- Compatible with PC host computer and mobile APP (Sinilink) for Android/iOS.
- Supports control via infrared remote control or 433M wireless remote control module.
- One-to-many group control via 485 bus.
- Integrated fire-retardant shell with double-buckle design.
- Silicone buttons with indicator lights for comfortable touch and clear status.
3. Technical Specifications
3.1. Model XY6530S
| Parameter | Value |
|---|---|
| Input Voltage | 12.00~75.00V |
| Output Voltage | 0~65.0V |
| Output Current | 0~30.00A |
| Output Power | 2000W |
| Voltage Resolution | 0.01V |
| Current Resolution | 0.01A |
| Accuracy of Voltage | ±0.5%+1 word |
| Accuracy of Current | ±0.5%+3 word |
3.2. Model XY6550S
| Parameter | Value |
|---|---|
| Input Voltage | 12.00~70.0V |
| Output Voltage | 0~65.00V |
| Output Current | 0~50.00A |
| Output Power | 3250W |
| Voltage Resolution | 0.01V |
| Current Resolution | 0.01A |
| Accuracy of Voltage | ±0.5%+1 word |
| Accuracy of Current | ±0.5%+3 word |
3.3. Common Specifications
| Parameter | Value |
|---|---|
| Stored Data Sets | 10 sets |
| Conversion Efficiency | Approx. 95% |
| Screen Size | 1.8-Inch Full-View High-Brightness True Color LCD |
| Output Ripple Typical Value | vpp-200mv |
| MPPT Function | Support MPPT solar charging |
| Buzzer | YES |
| Number of Buttons | 5 |
| Screen Instrument Size | 86*45*28mm |
| Bare Board Size | 126*85.5*43mm |
| Bare Board Weight | 276g |
| Bare Board Weight with Packaging | 330g |
| Product Package Size (Single-unit) | 170*134*52mm |
| Product Weight with Packaging (Single-unit) | 315g |
| Product Package Size (Full-set) | 245*122*75mm |
| Product Weight with Packaging (Full-set) | 425g |
4. Setup Instructions
4.1. Component Overview and Connections
The power supply module consists of a main board and a display control panel. Connect the display panel to the main board using the provided cable. Ensure all connections are secure before powering on.
Image: Diymore DC Buck Power Supply with Display Panel
4.2. Wiring Diagram
Refer to the diagram below for proper input and output connections, as well as optional serial communication and external temperature probe interfaces.
Image: Detailed Wiring Diagram of the DC Buck Power Supply, showing IN+, IN-, OUT+, OUT-, Serial Communication Interface (GND, RX, TX, 5V), and NTC temperature probe interface.
4.3. Bare Board Configuration (if applicable)
If you purchased a bare board, switches, potentiometers, and dial switches will be pre-welded. If a set with a screen meter is purchased, these are not welded by default.
Image: XY6530 Bare Board with DIP Switches for configuration.
The bare board supports 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 0-65V, and the output current is adjustable from 0-50A.
Image: Bare Board with Analog Control and DIP Switches for current adjustment.
To enter potentiometer mode, flip the switch up to light the green indicator light. Conversely, it operates in the digital control meter mode. In potentiometer mode, the output voltage (constant voltage) can only be controlled through the potentiometer; the constant current value can be set via a DIP switch, with a total of 16 gears to meet most scenarios (can also be set via Modbus).
4.4. Battery Charging Setup (MPPT)
The unit supports MPPT solar charging and features automatic stop when fully charged, and automatic charging at low battery. An external temperature probe can be connected for over-temperature protection. Attach the external temperature probe to the battery; charging will stop automatically if over-temperature is detected.
Image: MPPT Solar Charging Diagram showing connections for solar panel, battery, and NTC temperature probe.
Precaution: Ensure the unit is OFF before connecting the battery. Avoid reverse polarity connection to prevent device damage or fire hazards. Turn on the output ONLY after the battery icon appears on the screen to initiate charging.
5. Operation
5.1. Control Panel Functions
The display panel features several buttons and a rotary encoder for control:
Image: Diagram illustrating the functions of V-SET, SW, I-SET, Encoder, and Power buttons.
- V-SET 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.
- I-SET Button: Short Press: Set current (CC). Long Press: Enter or exit the data group settings UI.
- Encoder Button: Short Press: Shift. Long Press: Lock the button.
- Power Button (ON/OFF): Short Press: Turn power output on/off. Long Press: Shut down.
5.2. Setting Voltage and Current
There are three ways to set voltage and current:
Image: Display showing voltage and current settings, with an overview of setting methods.
- Quick Setup Mode:
a. Briefly press the V-SET/I-SET button to enter voltage/current setting mode.
b. Use the SW button or encoder button to move between digits.
c. Rotate the encoder to adjust the voltage/current value. Once set, press V-SET/I-SET briefly to save and exit. - Encoder Mode:
a. Briefly press the encoder button to activate the parameter (voltage/current) you want to set.
b. 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.
c. 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.
5.3. CV CC CW Features
The power supply operates in Constant Voltage (CV), Constant Current (CC), or Constant Power (CW) modes depending on the load and settings.
Image: Display showing CV, CC, and CW modes with their respective values.
- CV/CC Mode: When the constant power function is not turned on, the power supply only has CV and CC functions, which automatically switch based on the load. If the load current is less than the set constant current value, the power supply is in CV mode, where the output voltage is the set CV value, and the current is adaptive.
- CW Mode: 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. The corresponding voltage can be calculated based on the set constant power value using the power formula P=U/R. The constant power point algorithm automatically follows.
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.
5.4. Data Set Management
The device supports storing and recalling up to 10 data sets (M0-M9).
Image: Display showing lock function, quick recall data set interface, and system parameters interface.
- Quick Recall Data Set: Hold the V-SET button to quickly load the M1 data set. To select other data sets, hold the I-SET button to open the data set selection window. Rotate the encoder to choose the desired data set, then hold I-SET or briefly press SW/encoder button to load it.
- Lock Function: Hold the encoder button for more than 2 seconds to lock the buttons and prevent accidental changes. Repeat to unlock.
5.5. System Parameters Interface
Access and adjust various system parameters through the dedicated interface. Briefly press the SW button on the main screen to select a status bar parameter. Rotate the encoder to switch parameters. Briefly press SW or the 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/encoder button or wait 6 seconds without any button press. All settings are saved automatically.
5.6. Display Customization
The 1.8-inch LCD supports 8 color options and 4-way rotation.
Image: Display showing various color scheme customization options.
Image: Four views of the display panel demonstrating 360-degree rotation capability.
- Color Schemes: Freely customize the interface colors to create your unique style.
- 4-Way Rotation: Long press the SW button on the main UI to enable four-way rotation, allowing you to read test data from any angle.
5.7. Network Control
The device supports network control for remote management and monitoring.
Image: Diagram illustrating network control via PC host computer or mobile APP (Sinilink) with email notification and cloud record.
- LAN Penetration: Real-time communication over unlimited distances.
- Remote Control: Via external network, supporting email notification and cloud record.
- Software Support: Compatible with PC host computer and mobile APP (Sinilink) for Android/iOS.
5.8. Remote Control Operation
The power supply can be controlled using an infrared remote or a 433M wireless remote control module.
Image: Infrared and 433M Wireless Remote Control Modules for controlling the power supply.
The 433M wireless remote control module allows remote control in any direction, offering efficient and fast synchronous control of multiple devices.
Video: Demonstration of setting voltage, current, resetting capacity/energy/runtime, navigating data set parameters, system parameters, and remote control operation using an electronic load.
5.9. Group Control
The digital control panel supports one-to-many group control via the 485 bus.
Image: Diagram showing multiple power supply modules connected via a 485 bus for group control.
Activating 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.
Independent dual serial ports (usable simultaneously) featuring serial TTL level communication and onboard 485 communication enable remote multi-machine control.
Image: Diagram showing triple independent serial ports for versatile and flexible interfaces, including Modbus Slave and Master configurations.
6. Protection Mechanisms
The device is equipped with comprehensive protection features to ensure safety and longevity.
Image: Shield icon representing fully functional and comprehensively protected features.
| Protection Type | Description / Default Value |
|---|---|
| Anti-reverse | YES (output reverse current protection) |
| Input Under-Voltage (LVP) | 10-75.00V, default 10V |
| Over-Voltage (OVP) | 0-67.00V, default 67.00V |
| Over-Current (OCP) | 0-32A, default 32A |
| Over-Power (OPP) | 0-2100W, default 2000W |
| 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 |
| External Over-Temperature (ETP) | 0-110 °C, off by default |
7. Firmware Upgrades
The device supports firmware upgrades to experience new features and improvements.
Image: Display showing the firmware upgrade interface with BootLoader and App Version information.
At present, firmware upgrades are supported through the WiFi module. Future updates may include upgrades via multi-serial port host computer software.
Note: 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.
8. User Tips
- Always double-check input and output connections for correct polarity before powering on to prevent damage.
- When using the MPPT function for solar charging, ensure the external temperature probe is correctly attached to the battery for optimal protection.
- Familiarize yourself with the quick setup and encoder modes for efficient voltage and current adjustments.
- Utilize the data set storage feature to save frequently used configurations for quick recall.
- For remote monitoring and control, ensure your WiFi module is properly connected and configured with the Sinilink APP or PC software.
9. Maintenance
- Keep the device clean and free from dust and debris. Use a soft, dry cloth for cleaning.
- Ensure proper ventilation around the device, especially the fan, to prevent overheating.
- Avoid exposing the device to extreme temperatures, humidity, or corrosive environments.
- Regularly check all connections for tightness and signs of wear.
- If the device is not in use for an extended period, store it in a dry, cool place.
10. Troubleshooting
- No Power/Display: Check input power connections and ensure the power switch is ON. Verify the display panel cable is securely connected.
- Incorrect Output Voltage/Current: Ensure settings are correctly applied using the V-SET/I-SET buttons and encoder. Check for any active protection mechanisms (OVP, OCP, etc.) that might be limiting output.
- Overheating: Verify that the fan is operating correctly and not obstructed. Ensure the device is in a well-ventilated area. Reduce the load if necessary.
- Communication Issues: Check serial port connections and ensure the correct communication protocol (Modbus) and settings are used. For WiFi, verify network connectivity and APP configuration.
- Firmware Upgrade Failure: If an upgrade fails, press and hold the power button to force the product into upgrade mode and retry the process.
11. Warranty and Support
For warranty information, technical support, or service inquiries, please contact your retailer or the manufacturer directly. Keep your purchase receipt as proof of purchase.
