1. Introduction
The Viodmss SK90C is a high-performance CNC adjustable buck-boost power supply module designed for precise voltage and current regulation. It features a color screen, multiple protection mechanisms, and user-friendly controls, making it suitable for various applications including constant voltage and constant current charging.
2. Safety Information
Please read and understand all safety instructions before operating the device. Failure to follow these instructions may result in electric shock, fire, or damage to the product.
- Always ensure proper ventilation around the power supply to prevent overheating.
- Do not exceed the specified input voltage (6-36V) or output current (5A) and power (90W) limits.
- Ensure correct polarity when connecting input power and output load. Incorrect polarity can damage the device.
- Keep the device away from moisture, water, and extreme temperatures.
- Do not attempt to disassemble or modify the device. Refer all servicing to qualified personnel.
- Always disconnect power before making any connections or disconnections.
3. Product Features
The SK90C module incorporates several advanced features for reliable and efficient operation:
- Input Voltage Range: 6-36.00V
- Output Voltage Range: 0.5-36.00V
- Output Current: 0-5A
- Output Power: Up to 90W
- Display: 1.8-inch upgraded large color screen (36x29mm viewing range)
- Controls: Durable silicone buttons for enhanced tactile feedback and longevity.
- Protection Mechanisms:
- Input Anti-Reverse Connection
- Output Anti-Reverse Connection
- Input Undervoltage Protection (LUP): 5.5-35V adjustable
- Output Overvoltage Protection (OUP): 0.5-37V adjustable
- Output Overcurrent Protection (OCP): 0.001-5.2A adjustable
- Output Over-Power Protection (OPP): 0.01-91W adjustable
- Over-Temperature Protection (OTP): 30-99℃ adjustable
- Overtime Protection (OHP): 1 minute-99 hours and 59 minutes (default off)
- Over Capacity Protection (OAH): 0.001-9999Ah (default off)
- Over Energy Protection (OPH): 0.001-4000KWh (default off)
- Data Storage: 11 groups of settings can be stored and recalled.
- Buzzer: Built-in buzzer for key prompts and alarm indications.
- Terminals: Upgrade plug-in terminals for easy and secure connections.
- PCB Design: Utilizes a sinking gold process for improved conductivity and long-term reliability.
Figure 3.1: Overview of SK90C features including input/output ranges and multiple protection mechanisms.
Figure 3.2: Product highlights showing the 1.8-inch large screen, integrated knob, and silicone rubber keypads.
Figure 3.3: Detail of the upgraded silicone buttons, emphasizing their soft, durable, and dustproof qualities.
Figure 3.4: Internal view highlighting the built-in buzzer for alerts and the easy-to-replace upgrade plug-in terminals.
Figure 3.5: Illustration of the PCB sinking gold process, which enhances protection, conductivity, and reliability.
4. Setup
Follow these steps to set up your SK90C power supply module:
- Input Connection: Connect your DC input power source (6-36V) to the input terminals labeled 'IN+' and 'IN-'. Ensure correct polarity.
- Output Connection: Connect your load to the output terminals labeled 'OUT+' and 'OUT-'. Observe correct polarity.
- Power On: Apply power to the input terminals. The display should illuminate.
5. Operating Instructions
The SK90C features an intuitive interface for setting and monitoring parameters.
5.1. Setting Voltage and Current
- Press the V-SET button to enter voltage adjustment mode. Use the rotary encoder or M/T and OK/↓ buttons to change the voltage value. Press V-SET again to confirm.
- Press the I-SET button to enter current limit adjustment mode. Use the rotary encoder or M/T and OK/↓ buttons to change the current value. Press I-SET again to confirm.
- The OK/↓ button typically toggles the output ON/OFF or navigates menus.
5.2. Display Interfaces
The 1.8-inch color screen provides various display modes:
- Main Interface: Displays real-time output voltage, current, and power.
- Statistics Interface: Shows accumulated capacity (Ah), energy (Wh), and runtime.
- Voltage/Current Display: Graphical representation of voltage and current over time.
- Menu Interface: Accesses advanced settings, protection parameters, and calibration.
- Data Group Settings: Manages the 11 data storage groups.
Figure 5.1: Examples of the multiple interface displays available on the SK90C, including main, statistics, voltage/current graph, menu, and data group settings.
5.3. Data Storage and Recall
The module supports storing up to 11 sets of voltage and current parameters. Use the menu interface to save current settings to a group or recall previously saved settings.
6. Maintenance
To ensure the longevity and optimal performance of your SK90C power supply module:
- Keep the device clean and free from dust. Use a soft, dry cloth for cleaning.
- Ensure adequate airflow around the module to prevent heat buildup.
- Periodically check all input and output connections to ensure they are secure.
- Avoid exposing the device to direct sunlight or high humidity.
7. Troubleshooting
If you encounter issues with your SK90C module, refer to the following common problems and solutions:
- No Display/No Power:
- Check if the input power source is connected correctly and providing voltage within the 6-36V range.
- Verify input polarity.
- No Output Voltage/Current:
- Ensure the output is enabled (usually by pressing the OK/↓ button).
- Check if any protection mechanism (OUP, OCP, OPP, OTP, LUP) has been triggered. The display will usually indicate the active protection. Adjust settings or load accordingly.
- Verify output connections and load integrity.
- Inaccurate Readings:
- The device supports calibration. Refer to the menu interface for calibration procedures if necessary.
- Buzzer Alarms:
- A continuous or intermittent buzzer sound typically indicates a triggered protection. Check the display for the specific protection activated and address the underlying cause.
8. Specifications
Detailed technical specifications for the Viodmss SK90C power supply module:
Figure 8.1: Comprehensive table of product parameters and protection mechanisms for the SK90C.
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Product Name | CNC DC Voltage Buck-Boost Power Supply (Color Screen) | Product Model | ZK-SK90C |
| Input Voltage | 6-36.00V | Output Voltage | 0.5-36.00V |
| Output Current | 0-5A | Output Voltage Accuracy | ±0.3% +3 words (Calibratable) |
| Output Power | 90W | Output Current Accuracy | ±0.5% +3 words (Calibratable) |
| Voltage Resolution | 0.01V | Current Resolution | 0.001A |
| Data Storage | 11 groups | Silicone Rubber Keypads | 5 |
| Screen Size | Upgraded 1.8-inch large screen, 36x29mm visible range | Buzzer | Yes |
| Conversion Efficiency | About 88% | Soft Start | Yes |
| Product Size | 83x48x39.6mm (Height does not include rotary encoder) | Product Weight | Net weight: 101g, With packaging: 121g |
Protection Mechanisms
| Protection | Setting Range / Default Value |
|---|---|
| Input Anti-Reverse Connection | Yes |
| Output Anti-Backflow | Yes |
| Input Undervoltage Protection (LUP) | 5.5-35V adjustable, factory default 5.5V |
| Output Overvoltage Protection (OUP) | 0.5-37V adjustable, factory default 37V |
| Output Overcurrent Protection (OCP) | 0.001-5.2A adjustable, factory default 5.2A |
| Output Overpower Protection (OPP) | 0.01-91W adjustable, factory default 91W |
| Over Temperature Protection (OTP) | 30-99℃ adjustable, factory default 60℃ |
| Overtime Protection (OHP) | 1 minute-99 hours and 59 minutes, factory default off |
| Over Capacity Protection (OAH) | 0.001-9999Ah, factory default off |
| Over Energy Protection (OPH) | 0.001-4000KWh, factory default off |
9. Warranty and Support
No specific warranty information is provided in this manual. For technical support, warranty inquiries, or service, please contact your retailer or the manufacturer, Viodmss, directly. Please have your product model (SK90C) and purchase details available when contacting support.