1. Introduction
This manual provides essential information for the safe and efficient installation, operation, and maintenance of the SUSWE SU800 Series Variable Frequency Drive (VFD). The SU800 VFD is designed to control the speed of three-phase AC motors, offering precise control and energy savings in various industrial applications. Please read this manual thoroughly before installation and operation to ensure proper usage and prevent potential hazards.
2. Safety Information
WARNING: Improper installation or operation of this equipment can result in serious injury or death, and damage to the equipment. Only qualified personnel should perform installation, wiring, and maintenance.
- Electrical Shock Hazard: The VFD contains high voltage components. Do not touch internal components immediately after power-off. Wait at least 5 minutes for capacitors to discharge.
- Proper Grounding: Ensure the VFD is properly grounded according to local electrical codes.
- Power Disconnection: Always disconnect all power sources before performing any wiring, inspection, or maintenance.
- Environmental Conditions: Install the VFD in an environment free from excessive dust, moisture, corrosive gases, and direct sunlight.
- Motor Compatibility: Ensure the motor is compatible with the VFD's output specifications.
3. Product Overview
The SUSWE SU800 series VFD is a compact and versatile frequency converter designed for precise motor speed control. It features a user-friendly control panel and robust construction.
Figure 3.1: Front view of the SUSWE SU800 Series VFD. This image displays the main unit with its digital display, control buttons, and warning labels.
Figure 3.2: Comparison of different SUSWE VFD models, illustrating variations in physical size based on power ratings. The SU800 series comes in various power capacities.
3.1 Control Panel and Display
The VFD features an intuitive control panel for monitoring and parameter adjustment. Some models also support an external remote control panel.
Figure 3.3: The SUSWE VFD connected to an optional remote control panel via an Ethernet cable. This setup allows for flexible control and monitoring away from the main unit.
Figure 3.4: Detailed view of the VFD's control panel, highlighting the digital display, function keys (PRG, MFK, ENTER), and navigation buttons (up, down, left, right). The display shows operational parameters like frequency (Hz) and voltage (V).
- Display: Shows output frequency, voltage, current, and various parameter values.
- RUN/STOP: Buttons for starting and stopping the motor.
- PRG: Program key to enter/exit parameter setting mode.
- MFK: Multi-function key, often used for quick access or specific functions.
- ENTER: Confirms parameter settings.
- Arrow Keys: Navigate through menus and adjust parameter values.
3.2 Cooling System
The VFD incorporates an internal cooling fan to dissipate heat generated during operation, ensuring stable performance and longevity.
Figure 3.5: Close-up view of the VFD's cooling fan, located on the side or rear of the unit. Proper airflow is crucial for maintaining optimal operating temperatures.
3.3 Internal Components and Terminals
The VFD's internal circuitry manages power conversion and motor control. The terminal block provides connections for power input, motor output, and control signals.
Figure 3.6: View of the VFD's internal circuit board and the terminal block. The terminals are clearly labeled for power input (R, S, T), motor output (U, V, W), ground (PE), and control signals (PB).
4. Setup and Installation
4.1 Mounting
- Mount the VFD vertically on a non-flammable surface.
- Ensure adequate clearance (at least 10 cm) around the VFD for proper ventilation and heat dissipation.
- Avoid mounting in direct sunlight or near heat sources.
4.2 Wiring
All wiring must comply with local and national electrical codes. Use appropriate wire gauges for the VFD's power rating.
- Power Input (R, S, T): Connect the three-phase AC power supply to the R, S, T terminals. Ensure correct voltage (e.g., 380V).
- Motor Output (U, V, W): Connect the three-phase motor leads to the U, V, W terminals.
- Ground (PE): Connect the VFD's ground terminal (PE) to a reliable earth ground.
- Control Terminals: Connect external control signals (e.g., start/stop, speed reference, fault indication) to the designated control terminals as per the wiring diagram in the full product manual.
- RS485 Communication: If using RS485, connect the communication lines to the corresponding terminals.
5. Operating Instructions
5.1 Initial Power-Up
- After completing all wiring and safety checks, apply power to the VFD.
- The display should illuminate, showing default parameters or a standby state.
5.2 Basic Operation
- Start: Press the RUN button on the control panel to start the motor.
- Stop: Press the STOP/RST button to stop the motor.
- Frequency Adjustment: Use the arrow keys (up/down) to adjust the output frequency, thereby changing the motor speed.
5.3 Parameter Settings
The VFD has numerous parameters for fine-tuning its operation. Refer to the detailed parameter list in the complete product manual for specific codes and functions.
- Press the PRG button to enter parameter setting mode.
- Use the arrow keys to navigate through parameter groups and individual parameters.
- Press ENTER to select a parameter and view/edit its value.
- Use the arrow keys to change the parameter value.
- Press ENTER again to save the new value.
- Press PRG to exit parameter setting mode.
6. Maintenance
Regular maintenance ensures the longevity and reliable operation of your VFD.
- Cleaning: Periodically clean the VFD's exterior and cooling fins to prevent dust accumulation, which can hinder heat dissipation. Use a soft, dry cloth. Do not use liquid cleaners.
- Fan Inspection: Check the cooling fan for proper operation and any obstructions. Replace the fan if it becomes noisy or stops working.
- Terminal Tightness: Annually check all wiring terminals for tightness. Loose connections can cause overheating and damage.
- Environmental Check: Ensure the operating environment remains within specified temperature and humidity ranges.
7. Troubleshooting
This section provides solutions for common issues. For complex problems, contact technical support.
| Problem | Possible Cause | Solution |
|---|---|---|
| VFD does not power on | No input power; Blown fuse; Incorrect wiring | Check power supply; Inspect fuses; Verify wiring connections. |
| Motor does not run | VFD in stop mode; Incorrect frequency setting; Motor wiring error; Overload | Press RUN; Adjust frequency; Check motor wiring; Reduce load. |
| Overcurrent fault (OC) | Sudden load change; Short circuit in motor/cables; Acceleration time too short | Check motor and load; Inspect wiring; Increase acceleration time parameter. |
| Overvoltage fault (OV) | Input voltage too high; Deceleration time too short; Regenerative load | Check input voltage; Increase deceleration time; Consider braking resistor. |
| Overheat fault (OH) | Insufficient ventilation; Ambient temperature too high; Cooling fan failure | Ensure proper ventilation; Reduce ambient temperature; Check/replace cooling fan. |
8. Specifications
Key technical specifications for the SUSWE SU800 Series VFD (5.5KW 380V model).
8.1 Electrical Specifications
| Parameter | Value |
|---|---|
| Input Voltage | 3-Phase 380V AC |
| Output Voltage | 3-Phase 0-380V AC |
| Rated Power | 5.5 KW |
| Output Frequency Range | 0-400 Hz |
| Control Method | V/F Control, Vector Control |
| Communication Interface | RS485 |
8.2 General Specifications
| Parameter | Value |
|---|---|
| Product Dimensions | 0.39 x 0.39 x 0.39 inches (approximate, for 5.5KW 380V model) |
| Item Weight | 1.76 ounces (approximate, for 5.5KW 380V model) |
| Operating Temperature | -10°C to 40°C |
| Storage Temperature | -20°C to 60°C |
| Humidity | Less than 90% RH (non-condensing) |
9. Warranty and Support
The SUSWE SU800 Series VFD is covered by a standard manufacturer's warranty against defects in materials and workmanship. For specific warranty terms and duration, please refer to your purchase documentation or contact your supplier.
For technical assistance, troubleshooting beyond this manual, or warranty claims, please contact your authorized SUSWE distributor or the point of purchase. When contacting support, please have your product model number and purchase date available.
Online Resources: For additional information, FAQs, and software updates, please visit the official SUSWE website (if available).
