1. Introduction
This manual provides detailed instructions for the safe and effective use of the RD RD6018P DC Adjustable Step-Down Voltage Regulated Power Supply. Please read this manual thoroughly before operating the device to ensure proper functionality and to prevent damage.
Figure 1: Front view of the RD RD6018P DC Power Supply.
2. Safety Information
- Ensure the input voltage is within the specified range (7-70.000V). Exceeding 75V will trigger power cutoff protection.
- Do not reverse the input polarity. While the device has protection, incorrect connection should be avoided.
- Always connect the power supply to a stable and appropriate AC-DC power source.
- Avoid short-circuiting the output terminals for extended periods, even with short-circuit protection.
- Operate the device within the specified working temperature range (-10℃~40℃).
- Ensure proper ventilation; the cooling fan activates under specific conditions (Output current >6A or System temperature >45℃).
- For battery charging, use the designated green battery charging terminal.
3. Setup
3.1 Unboxing and Initial Inspection
Carefully remove the RD6018P from its packaging. Inspect the device for any visible damage. The package includes the RD6018P unit and a small bag of accessories. A CR1220 battery is required for the time display function and is not included.
Video 1: Unboxing of the RD6018P DC Power Supply, showing the contents and initial inspection.
3.2 Power Connection
Connect the RD6018P to a suitable AC-DC power source. Ensure the polarity is correct. The device is designed to be integrated into a panel or used with an external casing.
Figure 2: Internal view of the RD6018P, highlighting components and the location of the 1808 25A fuse. A backup fuse is provided for temporary use if the primary fuse is damaged.
3.3 Software Connection (Optional)
The RD6018P supports PC software via a micro USB connection for control and monitoring. The PC software is compatible with Windows 7 and above. An Android app is also available for Android 5.0 and above. Note that this specific model (RD6018P) does not include a Wi-Fi board.
Figure 3: The RD6018P connected to a laptop, demonstrating PC software functionality for monitoring and control.
4. Operating Instructions
4.1 Basic Operation
The RD6018P features a 5-digit display, allowing for precise setting and monitoring of voltage and current. It supports a maximum output of 60.000V and 18.000A.
Figure 4: The RD6018P's 5-digit display, illustrating its high resolution for voltage and current readings, and its 18A high current capability.
4.2 Setting Voltage and Current
Use the numerical keypad and rotary encoder to set the desired output voltage and current limits. The display provides real-time feedback on the set values and actual output.
Figure 5: The RD6018P demonstrating its 5-digit resolution and measurement accuracy, comparable to professional equipment, as shown by comparison with a precision multimeter.
4.3 Battery Charging
For battery charging applications, utilize the dedicated green battery charging terminal to ensure safe and efficient operation.
4.4 Performance Characteristics
- Low Ripple, High Efficiency: The device incorporates high-quality MOSFETs and LC filtering circuits, resulting in lower heat generation and stable performance. Typical ripple is 20mV VPP.
- Balanced Performance: Features excellent dynamic response and low load regulation rate, ensuring stable output even with varying loads.
- No Output Overshoot: The output curve is smooth, preventing interference and potential damage to connected loads.
Figure 6: An oscilloscope display showing the smooth output curve of the RD6018P, confirming the absence of output overshoot.
5. Maintenance
5.1 Cooling System
The integrated cooling fan operates automatically to maintain optimal temperature. The fan activates when the output current exceeds 6A or the system temperature rises above 45℃. It deactivates when the output current drops below 5.9A and the system temperature falls below 40℃. Ensure the fan vents are clear of obstructions for effective cooling.
5.2 Firmware Updates
The RD6018P supports firmware upgrades to optimize performance and add new functions. Refer to the official RD website for the latest firmware and update instructions.
6. Troubleshooting and Protection Features
- Over-Voltage Protection (OVP): If the input voltage exceeds 72V, the device will display an "Overvoltage at input!" warning, and the output will turn off. If the input voltage exceeds 75V, the device will initiate a power cutoff protection, turning off the display and output to prevent damage. The product can withstand input over-voltage of 100V for up to 1 second.
- Reverse Input Voltage Protection: The device is designed to prevent damage from reverse input voltage connection.
- Output Short Protection: The RD6018P includes output short-circuit protection to safeguard the device and connected loads.
- Over-Temperature Protection: The system will shut down if the internal temperature exceeds 90℃.
Figure 7: The versatility of the RD6018P in various settings, including institutes, laboratories, factories, and repair shops.
7. Technical Specifications
| Parameter | Value |
|---|---|
| Model | RD6018P |
| Input Voltage Range | 7-70.000V |
| Output Voltage Range | 0-60.000V |
| Output Current Range | 0-18.000A |
| Output Power Range | 0-1080W |
| Output Voltage Resolution | 1mV |
| Output Current Resolution | 1mA |
| Output Voltage Accuracy | 0.05%+4mV |
| Output Current Accuracy | 0.1%+6mA |
| Default Cutoff Current (Charging) | 10mA |
| Output Ripple (Typical) | 20mV |
| Working Temperature Range | -10℃~40℃ |
| Constant Voltage Mode Response Time | 22uS (0.5A-18A) |
| Buck Working Mode | (Input Voltage ÷ 1.1) - 1 |
| Over Temperature Protection | System temperature higher than 90℃ |
| Screen Brightness Setting | 0-5 (6 levels total) |
| Screen | 2.4 inch color HD display |
| Product Dimensions | 167 x 81 x 67mm (6.57 x 3.19 x 2.64 inches) |
| Item Weight | 0.54 kg (1.19 pounds) |
8. Warranty and Support
For any issues or inquiries regarding the RD6018P, please contact the seller directly. They are committed to providing prompt assistance. While specific warranty details are not provided in this manual, customer support is available to address product-related concerns.
Always refer to the official product website or contact the manufacturer for the most up-to-date information on warranty terms and technical support.
