1. Уводзіны
This manual provides essential information for the safe and efficient installation, operation, and maintenance of the FUZHUI SKI780-2D2G-4 Variable Frequency Drive (VFD) Frequency Converter. Please read this manual thoroughly before using the product to ensure proper functionality and to prevent potential hazards. This device is designed for controlling the speed of 3-phase AC motors in various industrial applications, including constant pressure water supply systems.
2. Прадукт скончыўсяview
The FUZHUI SKI780-2D2G-4 is a compact and robust frequency converter designed for precise motor control. It features a built-in braking unit and advanced interference-reduction technology.
Асноўныя характарыстыкі:
- Built-In Braking Unit: Enables fast forward and reverse rotation switching with an external braking resistor, enhancing operational efficiency.
- Exceptional Immunity to Disturbance: Equipped with interference-reduction technology for stable performance in electromagnetically noisy environments.
- User-Friendly Functionality: Designed for ease of operation and wiring, facilitating quick setup and integration.
- Універсальныя прымянення: Suitable for constant pressure water supply and wind pressure constant pressure control, adaptable to various industrial needs.
- Кампактны і лёгкі дызайн: Measures approximately 142 x 110 x 85mm and weighs 1.5kg, making it easy to install and transport.

Малюнак 2.1: Пад вуглом view of the FUZHUI SKI780-2D2G-4 VFD Frequency Converter, showing the control panel and terminal blocks.

Малюнак 2.2: Задняя частка view of the frequency converter, highlighting the ventilation grilles and mounting points.
3. Тэхнічныя характарыстыкі
| Параметр | Каштоўнасць |
|---|---|
| мадэль | SKI780-2D2G-4 |
| Дыяпазон прымянення | Універсальны |
| Нумар фазы | Тры фазы |
| Пастаўка Voltage | Three-phase AC380V 50/60Hz |
| Выхад Voltage | Three-phase AC380V |
| Adapted Motor Capacity | 2.2кВт |
| DC Supply Properties | тtage Тып |
| Метад кантролю | Current Direction |
| Выхад Voltage Рэжым рэгулявання | Упраўленне ШІМ |
| Намінальны ток | 5.1А |
| Product Size (Approx.) | 142 x 110 x 85mm / 5.6 x 4.3 x 3.3in |
| Panel Opening Size (Approx.) | 61 x 81mm / 2.4 x 3.2in |
| Вага (прыбл.) | 1.5кг / 3.3 фунтаў |
| Вытворца | FUZHUI |
| Нумар мадэлі тавару | FUZHUI3ytmw2dggu |
4. Інфармацыя па бяспецы
ПАПЯРЭДЖАННЕ: Небяспека паражэння электрычным токам. Устаноўка і абслугоўванне павінны выконвацца толькі кваліфікаваным персаналам.
- Always disconnect power before installation, wiring, or maintenance.
- Ensure proper grounding of the unit and connected equipment.
- Do not operate the VFD with damaged cables or if the enclosure is open.
- Protect the unit from moisture, dust, and corrosive environments.
- Выконвайце ўсе мясцовыя і нацыянальныя электрычныя нормы.
- The VFD may have residual voltage even after power is disconnected. Wait at least 5 minutes after power-off before touching internal components.
5. Настройка і ўстаноўка
5.1 Мантаж
Mount the VFD in a clean, dry, and well-ventilated area. Ensure adequate clearance around the unit for heat dissipation. The compact size (142 x 110 x 85mm) allows for flexible installation.
5.2 Электраправодка
Refer to the terminal block diagrams for correct wiring connections. Ensure all connections are secure and properly insulated.

Малюнак 5.1: Спераду view of the VFD, detailing the control panel and the main power and control terminal blocks.

Малюнак 5.2: Зверху ўніз view of the VFD's terminal blocks, showing input (R, S, T), output (U, V, W), braking (P+, PB), and control terminals (24V, 10V, AI1, GND, DI1-DI5, TA, TB, TC, AO1, FM, A+, B-).
- Power Input (R, S, T): Connect the three-phase AC380V 50/60Hz power supply to these terminals.
- Выхад рухавіка (U, V, W): Connect the 3-phase motor to these terminals.
- Braking Resistor (P+, PB): Connect an external braking resistor here if fast deceleration or frequent stopping is required.
- Тэрміналы кіравання: These include 24V and 10V auxiliary power, analog inputs (AI1, AO1), digital inputs (DI1-DI5), relay outputs (TA, TB, TC), and communication interfaces (FM, A+, B-). Refer to the detailed wiring diagram in the included user manual for specific connections based on your application.
5.3 Panel Compatibility Note
IMPORTANT: This product is an unused inverter and is designed to be used only with an unused panel. If your existing panel is an older model, it may not be compatible with this product. Please refer to the provided images or the full user manual to distinguish between old and new panel models for compatibility.
6. Інструкцыя па эксплуатацыі
The VFD features a user-friendly control panel for setting parameters and operating the motor.

Figure 6.1: Close-up of the VFD control panel, showing buttons for RUN, STOP/REST, PROG, M-FUN, SHIFT, ENTER, and arrow keys.
6.1 Функцыі панэлі кіравання
- РАБІЦЬ: Заводзіць матор.
- STOP/REST: Спыняе рухавік або скідае памылкі.
- ПРАГРАМА (PROG): Enters or exits parameter setting mode.
- M-FUN (Multi-Function): Accesses multi-function menus.
- SHIFT (<<): Shifts cursor position or changes display.
- УВОД: Confirms parameter settings or enters sub-menus.
- Стрэлкі ўверх/уніз: Navigate through menus or adjust parameter values.
6.2 Асноўная паслядоўнасць аперацый
- Уключэнне: Apply three-phase AC380V power to the VFD.
- Налада параметраў: Use the PROG button to enter parameter setting mode. Adjust necessary parameters such as motor frequency, acceleration/deceleration times, and control mode (Current Direction, PWM Control) using the arrow keys and ENTER button.
- Запуск рухавіка: Press the RUN button to start the motor. The display will show the output frequency or other selected operating parameters.
- Адрэгуляваць хуткасць: Use the up/down arrow keys (if configured for local speed adjustment) or external control signals to change the motor speed.
- Спыніць рухавік: Press the STOP/REST button to stop the motor.
For detailed parameter descriptions and advanced functions, refer to the comprehensive user manual included with your product.
7. Тэхнічнае абслугоўванне
Regular maintenance ensures the longevity and reliable operation of your VFD.
- Уборка: Periodically clean the VFD's exterior and ventilation grilles to prevent dust accumulation, which can impede cooling. Use a soft, dry cloth. Do not use liquid cleaners.
- агляд: Рэгулярна правярайце ўсе злучэнні правадоў на надзейнасць і наяўнасць прыкмет зносу або пашкоджанняў. Правярайце наяўнасць незвычайных шумоў або пахаў падчас працы.
- Умовы навакольнага асяроддзя: Забяспечце, каб тэмпература і вільготнасць у рабочым асяроддзі знаходзіліся ў межах зададзеных дыяпазонаў.
- Capacitor Life: Electrolytic capacitors have a finite lifespan. If the VFD is in continuous operation for many years, consider professional inspection or replacement of capacitors.
Always disconnect power and wait for the discharge period before performing any maintenance.
8. Выпраўленне непаладак
This section provides general guidance for common issues. For specific error codes and advanced troubleshooting, consult the full user manual.
| праблема | Магчымая прычына | Рашэнне |
|---|---|---|
| Частотны пераўтваральнік не ўключаецца | Няма ўваходнага харчавання; перагарэў засцерагальнік; унутраная няспраўнасць | Check power supply; Inspect fuses; Contact technical support. |
| Матор не працуе | Incorrect wiring; Parameter settings incorrect; Overload; Emergency stop active | Verify motor wiring; Check parameter settings (e.g., frequency, control mode); Reduce load; Reset emergency stop. |
| Перагрузка па току | Motor overload; Short circuit in motor or wiring; Rapid acceleration | Reduce load; Check motor and wiring for shorts; Increase acceleration time parameter. |
| Аверволtage віна | Rapid deceleration; High input voltage | Increase deceleration time parameter; Install braking resistor if needed; Verify input voltage. |
| Undervoltage віна | Нізкая ўваходная гучнасцьtage; Power supply interruption | Праверце ўвод тtage; Check power supply stability. |
If the problem persists after attempting these solutions, please contact FUZHUI technical support.
9. Гарантыя і падтрымка
Specific warranty details for the FUZHUI SKI780-2D2G-4 Frequency Converter are not provided in this document. Please refer to the product packaging, purchase documentation, or contact your vendor for warranty information.
For technical support or inquiries, please visit the official FUZHUI store or contact their customer service department.
FUZHUI Store: https://www.amazon.com/stores/FUZHUI/page/E72029D9-145D-4226-96C5-6B17B08C907A