1. Introduction
This manual provides detailed instructions for the Aideepen WZ5020L and WZ5012L DC-DC Buck Converter modules. These are digital control power supply modules designed for adjustable voltage and current regulation. Please read this manual thoroughly before operation to ensure safe and correct usage.
1.1. Key Features
- LCD display for input/output voltage, output current/power/capacity/time.
- CNC adjustment for accurate and fast voltage and current regulation.
- Output end protected against reverse current (no burning).
- Module can be set to open/close by default on power-up.
- Multiple software protection mechanisms with adjustable thresholds. Output automatically closes if working parameters exceed thresholds.
- High conversion efficiency (over 90%) using synchronous rectification technology.
- Integrated heat sink and fan for enhanced heat dissipation.
2. Specifications
2.1. WZ5020L (20A 1000W Model)
Image: WZ5020L module with display, indicating 0-50.00V Output Voltage, 0-20.00A Output Current, and 0-1000W Output Power.
| Parameter | Value |
|---|---|
| Model | WZ5020L |
| Display | LCD |
| Input Voltage Range | 6-55.00V |
| Input Voltage Resolution | 0.01V |
| Output Voltage Range | 0-50.00V |
| Output Voltage Resolution | 0.01V |
| Output Current Range | 0-20.00A |
| Output Current Resolution | 0.01A |
| Output Power Range | 0-1000W |
| Input Voltage Accuracy | ±(1%+5) |
| Output Voltage Accuracy | ±(0.3%+5) |
| Output Current Accuracy | ±(0.5%+5) |
| Typical Output Ripple (Peak) | 150mV |
| Normal Operating Temperature | -10℃~40℃ |
| Capacity Measurement Range | 0-999.9AH |
| Statistical Error of Capacity Energy | ±2% |
| Statistical Time Range | 0-100 hours |
| Depressurization Mode | Differential pressure >0.05%+1V |
| Soft Start | Yes |
| Nude Weight | ~200g |
| Product Size (Panel) | 79 x 43 x 42mm |
| Product Size (Main Board) | 106 x 76 x 40mm |
2.2. WZ5012L (12A 600W Model)
Image: WZ5012L module with display, indicating 0-50.00V Output Voltage, 0-12.00A Output Current, and 0-600.0W Output Power.
| Parameter | Value |
|---|---|
| Model | WZ5012L |
| Display | LCD |
| Input Voltage Range | 6-55.00V |
| Input Voltage Resolution | 0.01V |
| Output Voltage Range | 0-50.00V |
| Output Voltage Resolution | 0.01V |
| Output Current Range | 0-12.00A |
| Output Current Resolution | 0.01A |
| Output Power Range | 0-600.0W |
| Input Voltage Accuracy | ±(1%+5) |
| Output Voltage Accuracy | ±(0.3%+5) |
| Output Current Accuracy | ±(0.5%+5) |
| Typical Output Ripple (Peak) | 150mV |
| Normal Operating Temperature | -10℃~40℃ |
| Capacity Measurement Range | 0-999.9AH |
| Statistical Error of Capacity Energy | ±2% |
| Statistical Time Range | 0-100 hours |
| Depressurization Mode | Differential pressure >0.05%+1V |
| Soft Start | Yes |
| Nude Weight | ~199g |
| Product Size (Panel) | 79 x 43 x 42mm |
| Product Size (Main Board) | 106 x 76 x 40mm |
2.3. Dimensions and Package
Image: Detailed dimensions of the display panel and main board, along with cable length and approximate weight.
Image: Package box dimensions and weight.
3. Setup and Connections
The module consists of a main board and a display and setting panel connected via cables. Ensure all connections are secure before applying power.
3.1. Connection Diagram
Image: Labeled diagram of the main board and display panel connections.
3.2. Important Cautions for Setup
- The module input positive (IN+) and negative (IN-) must NOT be reversed.
- The module input negative (IN-) must NOT be short-circuited with the output negative (OUT-), otherwise the module may be burnt out.
- Ensure the power supply's instantaneous power exceeds the required power of the output load.
- This is a step-down module. The input voltage should always be higher than the output voltage, with a sufficient margin. For full load output, the input voltage should be 55V.
- When using the module at high power, significant heat will be generated. Ensure adequate ventilation and heat dissipation to prevent scalding and damage.
4. Operation
The module is controlled via the display and setting panel, which includes SW button, U/I button, and a Rotary encoder.
4.1. Display Panel Controls
Image: Close-up of the display panel with labeled buttons and indicators.
4.2. Key Functions Overview
Image: Table summarizing button and encoder functions across different interfaces.
4.3. Interface Descriptions
Image: Visual representation of the different display interfaces.
4.4. Method of Use
- Switch Display Parameters (Normal Interface):
- Short press SW: Switch display content below (current A, power W, capacity Ah, time h).
- Long press SW: Switch uplink display content (input voltage IN, output voltage OUT).
- Set Output Voltage:
- Press U/I (short press) in the normal interface to enter the voltage/current setting interface.
- A digit of the output voltage value will flash. Rotate the Rotary encoder left/right to adjust the major and minor values.
- Short press the Rotary encoder to select which digit to set.
- After setting, press U/I twice to return to the normal interface, or it will automatically return after 10s of inactivity.
- Set Constant Current Value:
- Press U/I (short press) in the normal interface to enter the voltage/current setting interface.
- Press U/I again to switch to the constant current setting. A digit of the constant current value will flash.
- Rotate the Rotary encoder left/right to adjust the major and minor values.
- Short press the Rotary encoder to select which digit to set.
- After setting, press U/I to exit the setting interface and return to the normal interface, or it will automatically return after 10s of inactivity.
- Set Default On/Off State (Module Power-on):
- Long press U/I in the normal interface to enter the parameter setting interface.
- You will see "OPEN OFF" or "OPEN ON".
- "OPEN OFF" means output is OFF by default when powered ON.
- "OPEN ON" means output is ON by default when powered ON.
- Long press the Rotary encoder to switch between these two states.
- After setting, long press U/I to return to the normal interface.
- Set Protection Parameters (State and Threshold):
- Long press U/I in the normal interface to enter the parameter setting interface.
- Press SW repeatedly until the desired protection parameter appears:
- LUP: Input undervoltage protection threshold.
- OUP: Output overvoltage protection threshold.
- OCP: Output overcurrent protection threshold.
- OAP: Ultra-capacity protection threshold.
- OHP: Timeout protection threshold.
- Short press the Rotary encoder to select which bit to set for the protection parameter.
- Long press the Rotary encoder to set the protection parameters ON or OFF (only OAP and OHP can be turned on/off; others are ON by default).
- Rotate the Rotary encoder left/right to adjust the parameter values.
- After setting, long press U/I to return to the normal interface.
- Calibration (Voltage and Current):
- Press U/I (short press) to enter the parameter setting interface under normal interface.
- Short press SW until the interface with "zero + out + a symbol" appears. Press and hold the Rotary encoder to complete zero calibration.
- Short press SW until a parameter interface with "CAL" appears. This includes:
- CAL+IN+V (Input voltage calibration)
- CAL+OUT+V (Output voltage calibration)
- CAL+OUT+A (Output current calibration)
- Rotate the Rotary encoder left/right to adjust the size of parameters.
- After adjustment, long press the Rotary encoder to confirm. The parameter value will no longer flash.
- Long press U/I to return to the normal interface.
- Note: For accurate calibration, input voltage must be above 12V for voltage calibration, and output current must be above 1A for current calibration.
5. Troubleshooting and Protection
The module incorporates several protection mechanisms to ensure safe operation. When a protection mechanism is triggered, the output will automatically turn off, and the LCD will display a protection code. Press any key to exit the protection interface.
5.1. Protection Mechanisms
- Input Undervoltage Protection (LUP): Adjustable from 5.8-50V (default 5.8V). If input voltage drops below this threshold, output is disconnected.
- Output Overvoltage Protection (OUP): Adjustable from 0-51.00V (default 51V).
- Output Overcurrent Protection (OCP):
- WZ5020L: Adjustable from 0-20.10A (default 20.10A).
- WZ5012L: Adjustable from 0-12.10A (default 12.10A).
- Timeout Protection (OHP): Adjustable from 0-100 hours (off by default).
- Over Capacity Protection (OAP): Adjustable from 0-999.9Ah (off by default).
5.2. Common Issues and Solutions
- Module not powering on or no output: Check input voltage connections (polarity and secure connection). Ensure input voltage is within the specified range (6-55V) and higher than the desired output voltage.
- Module heating excessively: Ensure adequate ventilation. If operating at high power, the fan should be running. Reduce load if heating persists.
- Output automatically shuts off: Check the display for protection codes (LUP, OUP, OCP, OAP, OHP). Adjust the protection thresholds or reduce the load/input voltage as necessary.
- Inaccurate readings after calibration: Ensure calibration voltage was above 12V and calibration current was above 1A during the calibration process. Repeat calibration if needed.
6. User Tips
No specific user tips are available from reviews or Q&A at this time. Always refer to the safety cautions and operating instructions for optimal performance and longevity of your module.
7. Warranty and Support
For technical support or inquiries regarding your Aideepen WZ5020L/WZ5012L module, please contact your retailer or the manufacturer directly. Keep your purchase receipt for any warranty claims. Specific warranty terms may vary by region and seller.
PDF User Manual: A detailed user manual in PDF format is available for download. Please refer to the seller's product page for the link: View User Manual (PDF)