1. Introduction
This manual provides essential information for the safe and effective operation of the Dioche SKI780-2D2G-4 Mini Universal Motor VFD Frequency Converter Inverter. This device is designed to control the speed of three-phase AC motors, offering stable performance and strong anti-interference capabilities. It features a built-in braking unit for quick forward and reverse rotation switching, making it suitable for applications such as constant pressure water supply and wind pressure control.
2. Safety Information
Please read and understand all safety instructions before installation, operation, or maintenance. Failure to comply with these instructions may result in personal injury or equipment damage.
- Electrical Hazard: This device operates at high voltages. Ensure power is disconnected before any wiring or maintenance. Wait at least 5 minutes after power-off for capacitors to discharge (indicated by the 'DANGER 5 min' label on the unit).
- Qualified Personnel: Installation and maintenance should only be performed by qualified electrical personnel.
- Grounding: Ensure the inverter is properly grounded to prevent electric shock.
- Environment: Do not install in environments with excessive dust, corrosive gases, flammable materials, or direct sunlight. Ensure adequate ventilation.
- Load Compatibility: Ensure the motor and load are compatible with the inverter's specifications.
3. Product Overview
The Dioche SKI780-2D2G-4 is a compact frequency converter designed for precise motor control. It features an intuitive control panel and robust terminal connections.
3.1. Components Identification
Refer to the images below for a visual guide to the inverter's main components and control panel.
Figure 3.1: Front view of the Dioche SKI780-2D2G-4 VFD Frequency Converter, showing the control panel and terminal blocks. The panel includes buttons for RUN, STOP/REST, SHIFT, ENTER, PROG, M-FUN, and directional arrows. Status indicators for Hz, A, V, RUN, LOC, F/R are visible. Input terminals R, S, T are at the top, and output terminals U, V, W, P+, PB are at the bottom.
Figure 3.2: Angled view of the Dioche SKI780-2D2G-4 VFD, highlighting the ventilation grilles on the side and top, along with the main control panel and terminal connections.
Figure 3.3: Rear/side view of the Dioche SKI780-2D2G-4 VFD, showing the robust casing and additional ventilation features. This view also emphasizes the compact design of the unit.
4. Setup and Installation
4.1. Mounting
Mount the inverter vertically on a stable, non-flammable surface. Ensure sufficient clearance around the unit for proper heat dissipation and ventilation. Avoid mounting in direct sunlight or near heat sources.
4.2. Wiring Instructions
All wiring must be performed with the power supply disconnected. Use appropriate wire gauges for the rated current.
- Power Input (R, S, T): Connect the three-phase 380V AC power supply to the R, S, T terminals at the top of the inverter.
- Motor Output (U, V, W): Connect the three-phase motor to the U, V, W terminals at the bottom of the inverter.
- Braking Unit (P+, PB): For applications requiring fast forward and reverse rotation switching, connect an external braking resistor to the P+ and PB terminals.
- Grounding: Connect the ground terminal (marked with ⊕) to a reliable earth ground.
4.3. Panel Compatibility
This inverter is designed to be used with a specific type of new control panel. Ensure your external panel is compatible. Incompatible panels will not function correctly.
Figure 4.1: Illustration demonstrating the correct pairing of the new inverter with a compatible new control panel. The new panel typically has a QC pass label on its back for identification.
Figure 4.2: Illustration demonstrating an incompatible pairing of the new inverter with an old control panel. This configuration will not work, and users should ensure they have the correct panel type.
5. Operating Instructions
The inverter can be operated via its integrated control panel or an external keypad (if connected).
5.1. Basic Operation
- RUN Button: Press to start the motor.
- STOP/REST Button: Press to stop the motor or reset errors.
- PROG Button: Enters or exits the parameter setting mode.
- SHIFT (<<) Button: Used to shift the cursor during parameter setting or to view different display values.
- ENTER Button: Confirms parameter settings or enters sub-menus.
- Up/Down Arrows: Used to adjust frequency, change parameter values, or navigate menus.
- M-FUN Button: Multi-function button, typically used for quick access to common functions or to switch display modes (Hz, A, V).
5.2. Frequency Adjustment
In run mode, use the Up/Down arrow buttons to adjust the output frequency, thereby controlling the motor speed. The display will show the current frequency (Hz), output current (A), or output voltage (V) depending on the selected display mode.
5.3. Parameter Settings
Detailed parameter settings are crucial for optimizing inverter performance for specific applications. Refer to the comprehensive parameter list in the full user manual provided with the product for advanced configurations.
6. Maintenance
Regular maintenance ensures the longevity and reliable operation of the inverter.
- Cleaning: Periodically clean the inverter's exterior and ventilation grilles to prevent dust accumulation, which can hinder heat dissipation. Use a soft, dry cloth. Do not use liquid cleaners.
- Inspection: Regularly inspect wiring connections for tightness and signs of damage or corrosion. Check for any unusual noises or odors during operation.
- Environment: Ensure the operating environment remains within specified temperature and humidity ranges.
7. Troubleshooting
This section addresses common issues you might encounter. For complex problems or error codes not listed, consult the full product manual or contact technical support.
| Problem | Possible Cause | Solution |
|---|---|---|
| Inverter does not power on | No input power; Incorrect wiring; Blown fuse | Check power supply; Verify wiring connections; Inspect and replace fuses if necessary. |
| Motor does not run | Inverter not in RUN mode; Incorrect frequency setting; Motor wiring error; Overload | Press RUN; Adjust frequency; Check motor wiring; Reduce load or check motor capacity. |
| "DANGER 5 min" warning | Indicates high voltage present after power-off | Wait at least 5 minutes after disconnecting power before touching any internal components. |
| Inverter displays an error code | Specific fault detected (e.g., overcurrent, overvoltage, overheat) | Refer to the detailed error code list in the complete user manual for specific solutions. Address the underlying cause and reset the inverter. |
8. Specifications
Key technical specifications for the Dioche SKI780-2D2G-4 Frequency Converter:
- Model: SKI780-2D2G-4
- Application Range: Universal
- Power Phase Number: Three Phase
- Adapted Motor Power: 2.2 kW
- Control Method: Current Vector
- Rated Current: 5.1 A
- Product Dimensions (L x W x H): Approximately 142 x 110 x 85 mm (5.6 x 4.3 x 3.3 inches)
- Panel Opening Size: Approximately 61 x 81 mm (2.4 x 3.2 inches)
- Weight: Approximately 1.5 kg (3.3 lb)
9. Warranty and Support
Warranty information for the Dioche SKI780-2D2G-4 Frequency Converter is typically provided with the product packaging or can be obtained directly from the manufacturer or authorized seller. For technical support, troubleshooting assistance beyond this manual, or warranty claims, please contact your point of purchase or the Dioche customer service department.
