1. හැඳින්වීම
This manual provides essential information for the safe and efficient operation of your HKS VFD 7.5KW 10HP 220V Variable Frequency Drive. Please read this manual thoroughly before installation, operation, or maintenance to ensure proper usage and prevent potential hazards.
The HKS VFD is designed for precise motor speed control in various industrial applications, including CNC machines, spindle motors, compressors, and grinders. It supports both single-phase and three-phase 220V input and provides three-phase 220V output with a frequency range of 0-400Hz.
2 ආරක්ෂිත තොරතුරු
WARNING: Electrical shock hazard. Only qualified personnel should perform installation and maintenance.
- Ensure power is disconnected before any wiring or maintenance.
- නිවැරදි වෙළුම තහවුරු කරන්නtagVFD සම්බන්ධ කිරීමට පෙර e සහ වත්මන් ශ්රේණිගත කිරීම්.
- Do not connect AC power to the output terminals (U, V, W).
- Discharging time is greater than 5 seconds after power-off. Wait for the indicator to turn off before touching components.
- The inside of the heat sink may reach about 176°F (80°C) when the VFD is working. Exercise caution.
- Do not install any switch between the VFD and the load. Refer to the wiring diagram for proper switch implementation.
- Select a VFD model with a power rating at least 15% greater than the load for heavy-duty applications.
- Ensure your motor is a 3-phase asynchronous motor before purchasing and connecting.
3. නිෂ්පාදන අවසන්view
3.1 ප්රධාන ලක්ෂණ
- බලය: 7.5KW (10HP)
- ආදාන වෙළුමtage: AC 220V (180-250V), 1-phase or 3-phase
- ප්රතිදාන වෙළුමtage: 220V, 3-අදියර
- ආදාන ධාරාව: 35A
- ප්රතිදාන ධාරාව: 50A
- ආදාන සංඛ්යාතය: 40-60HZ
- ප්රතිදාන සංඛ්යාතය: 0-400HZ
- Intuitive display and control buttons.
- Detachable control panel for remote operation.
- Multiple protection features: overload, fuse, overvoltagඊ, undervoltage, restart, stall, short circuit, and overheat protection.
- Low noise and electromagnetic interference due to PMW control technology and optimized cooling design.
3.2. මානයන්
The HKS VFD 7.5KW 10HP 220V unit has approximate dimensions of 5 x 5 x 5 inches and weighs 6.45 pounds.

Figure 3.2.1: HKS VFD unit with indicated dimensions (5.9in x 7.1in x 8.7in, note: image dimensions differ slightly from product specifications, refer to text for official dimensions).

Figure 3.2.2: The HKS VFD features a detachable control panel for flexible installation and remote control capabilities.
4. ස්ථාපනය
4.1. රැහැන් සම්බන්ධතා
Ensure all power is disconnected before proceeding with wiring. The VFD has terminals for input power (R, S, T) and output to the motor (U, V, W).
- සඳහා 3-phase බල ආදානය, connect to R, S, and T terminals.
- සඳහා single-phase 220V power input, connect to R and T terminals. Ensure the voltage difference between the two lines is approximately 220V (±15%).
- සම්බන්ධ කරන්න 3-අදියර මෝටරය to the U, V, W output terminals.
- Use the Delta (Δ) wiring method for load terminals.

Figure 4.1.1: Simplified wiring diagram showing input power connection to the VFD and output to a 3-phase motor. A circuit breaker is shown for safety.

Figure 4.1.2: Detailed basic connection diagram for the HKS VFD, illustrating input (R, S, T) and output (U, V, W) terminals, control signal inputs (FWD/STOP, REV/STOP, RESET, etc.), and external potentiometer connections.
4.2. Power Connection Video Guide
Video 4.2.1: This video demonstrates how to connect power to the HKS A2 Series VFD. It shows the process of opening the terminal cover and connecting the input wires to the R and T terminals for single-phase 220V power, ensuring proper voltage difference. The video also highlights the importance of securing connections.
5. මෙහෙයුම
5.1. පාලන පැනලය අවසන්view

Figure 5.1.1: Illustration of the HKS VFD control panel, detailing the function of each button (RUN/STOP, SET, JOG, UP/DOWN, Adjustment Knob) and indicators (ERROR, FWD, REV, ANALOG, SEGMENT, PANEL, Digital LCD).
5.2. Initial Parameter Setting Guide
To ensure optimal performance and compatibility with your motor, follow these steps for initial parameter setup. This guide focuses on common settings for 50Hz parameters.
- සකසන්න pn32 (Parameter management) = 6 (initialization for 50Hz parameters).
- සකසන්න pn02 (Initial start up frequency by panel or other external signal) = Load rating frequency.
- සකසන්න pn03 (Source of runtime frequency) = 2 (Panel button).
- සකසන්න pn04 (Source of runtime command) = 1 (Panel button control).
- සකසන්න pn10 (Maximum runtime frequency) = Load rating frequency.
- සකසන්න pn12 (Motor rating frequency) = Load rating frequency.
Note: For 60Hz parameters, adjust relevant frequency settings accordingly. Consult the full manual for detailed parameter descriptions (Chapters 5-7).
Video 5.2.1: This video demonstrates the initial parameter setting guide for the HKS A2 Series VFD, specifically for 50Hz parameters. It shows how to navigate the menu and adjust parameters like pn32, pn02, pn03, pn04, pn10, and pn12 using the control panel buttons.
5.3. Jog Function
The JOG function allows for momentary operation of the motor at a preset low frequency. Press the JOG button to activate. The panel will indicate the JOG status.
Video 5.3.1: This video demonstrates the JOG function of the HKS A2 Series VFD. It shows how to activate the JOG function and observe the panel indicators for forward (FWD) and reverse (REV) operation.
6. නඩත්තු කිරීම
Regular maintenance ensures the longevity and reliable operation of your HKS VFD. Always disconnect power before performing any maintenance.
- VFD එක දූවිලි හා සුන්බුන් වලින් තොරව පිරිසිදුව තබා ගන්න.
- අධික උනුසුම් වීම වැළැක්වීම සඳහා ඒකකය වටා ප්රමාණවත් වාතාශ්රයක් සහතික කරන්න.
- සියලුම රැහැන් සම්බන්ධතා තද බව සහ ගෙවී යාමේ හෝ හානිවීමේ සලකුණු සඳහා වරින් වර පරීක්ෂා කරන්න.
- Inspect the cooling fan for proper operation and clear any obstructions.
- VFD අධික තෙතමනය හෝ විඛාදන පරිසරයන්ට නිරාවරණය වීමෙන් වළකින්න.

Figure 6.1.1: Image showing the cooling fan and ventilation design of the HKS VFD, highlighting the importance of maintaining clear airflow for optimal performance and lifespan.
7. දෝශ නිරාකරණය
This section provides basic troubleshooting steps for common issues. For complex problems, contact customer support.
| ගැටලුව | විය හැකි හේතුව | විසඳුම |
|---|---|---|
| VFD does not power on. | No input power, loose connections, internal fuse blown. | Check power supply, verify wiring, inspect fuses (qualified personnel only). |
| මෝටරය ක්රියාත්මක නොවේ. | Incorrect parameter settings, motor wiring error, overload. | Review parameter settings (e.g., pn02, pn03, pn04), check motor connections, reduce load. |
| අධි බර දෝෂය. | Motor overloaded, VFD undersized for application, acceleration time too short. | Reduce load, ensure VFD power rating is sufficient (at least 15% higher than motor for heavy loads), increase acceleration time (pn08). |
| අතිරික්තයtage/Undervoltagඊ දෝෂය. | ආදාන වෙළුමtage outside acceptable range. | ආදාන පරිමාව තහවුරු කරන්නtage is within 180-250V AC. |
| High temperature error. | Insufficient cooling, blocked vents, high ambient temperature. | Ensure proper ventilation, clear obstructions, consider cooling solutions. |
7.1. ආරක්ෂණ විශේෂාංග

Figure 7.1.1: Visual representation of the various protection features integrated into the HKS VFD, including overload, low-load, overvoltage, fuse, restart, short circuit, and missing protection.
8. පිරිවිතර
| විශේෂාංගය | විස්තර |
|---|---|
| බලය | 7.5KW (10HP) |
| ආදාන වෙළුමtage | AC 220V (180-250V) |
| ආදාන අදියර | 1-අදියර හෝ 3-අදියර |
| ප්රතිදාන වෙළුමtage | 220V |
| ප්රතිදාන අදියර | 3-අදියර |
| ආදාන ධාරාව | 35A |
| ප්රතිදාන ධාරාව | 50A |
| ආදාන සංඛ්යාතය | 40-60HZ |
| ප්රතිදාන සංඛ්යාතය | 0-400HZ |
| නිෂ්පාදන මානයන් | අඟල් 5 x 5 x 5 |
| අයිතමයේ බර | රාත්තල් 6.45 කි |
| නිර්දේශිත භාවිතයන් | Compressor, CNC router, Spindle motor, Grinder |
9. වගකීම් සහ සහාය
For warranty information or technical support, please refer to the product packaging or contact HKS customer service. It is recommended to have your product model number (7.5KW 10HP 220V) and purchase details available when contacting support.
If you have complex needs or encounter issues not covered in this manual, please contact customer service for accurate advice. Attaching pictures of the load equipment parameters (e.g., motor nameplate) can assist in faster resolution.





