1. Introduction
This manual provides essential information for the safe and efficient operation, installation, and maintenance of the ATUUKOPC SU900 Variable Frequency Drive (VFD). The SU900 series is designed to control the speed and torque of three-phase AC induction motors by varying the frequency and voltage of the power supplied to the motor. Please read this manual thoroughly before installation or operation to ensure proper usage and to prevent damage to the equipment or personal injury.
2. Safety Information
WARNING: DANGEROUS VOLTAGES. This device operates with high voltages that can cause severe injury or death. Only qualified personnel should perform installation, wiring, and maintenance. Always disconnect power before working on the VFD and wait at least 5 minutes for capacitors to discharge. Verify voltage is zero before touching any components.
- Ensure proper grounding of the VFD and the motor.
- Do not operate the VFD with covers removed.
- Protect the VFD from moisture, dust, and corrosive gases.
- Use appropriate personal protective equipment (PPE) when working with electrical systems.
3. Product Overview
The ATUUKOPC SU900 VFD is a high-power, high-performance frequency converter designed for industrial applications. It features a robust design with an integrated control panel for easy operation and monitoring.
Figure 3.1: Front view of the ATUUKOPC SU900 Variable Frequency Drive, showing the display and control panel.
3.1 Control Panel Layout
The control panel provides an interface for monitoring the VFD status and adjusting parameters. It includes a digital display, indicator lights, a speed control knob, and various function keys.
Figure 3.2: Detailed view of the SU900 control panel, highlighting the display area, speed control knob, Run key, Stop/Reset key, Confirm key, Programming Key, Increment Key, Decrement Key, Displacement key, and Multi-function keys.
- Display Area: Shows operational parameters such as frequency (Hz) and output current (A).
- Speed Control Knob: Used to adjust the output frequency/motor speed.
- RUN Key: Initiates motor operation.
- STOP/RESET Key: Stops motor operation or clears fault indications.
- PRG (Programming) Key: Enters or exits parameter programming mode.
- Arrow Keys (Up/Down/Left/Right): Used for navigation and value adjustment in programming mode.
- ENTER Key: Confirms parameter settings.
- MFK (Multi-Function Key): Provides additional functions depending on the operating mode.
3.2 Cooling System
The SU900 VFD incorporates active cooling to maintain optimal operating temperatures, featuring internal fans to dissipate heat generated during operation.
Figure 3.3: View of the cooling fans on the ATUUKOPC SU900 VFD, essential for heat dissipation.
4. Specifications
The following table details the technical specifications for the ATUUKOPC SU900 Variable Frequency Drive (18.5KW 380V model).
Figure 4.1: Product information and dimensions for the SU900 18.5KW 380V VFD.
| Parameter | Value |
|---|---|
| Model | SU900 |
| Input Voltage | 380V Three Phase |
| Output Voltage | 380V Three Phase |
| Output Power | 18.5KW (25 HP) |
| Output Current | 37-45A |
| Output Frequency | 50-400Hz |
| Control Type | DC/AC Frequency Converter |
| Communication | 485 Communication |
| Dimensions (L×W×H) | 297mm × 165mm × 206mm |
| Weight | 6kg |
5. Setup and Installation
Proper installation is crucial for the performance and longevity of the VFD. Ensure the installation environment meets the specified conditions (temperature, humidity, ventilation).
5.1 Mounting
- Mount the VFD vertically on a flat, non-flammable surface.
- Allow sufficient clearance around the unit for proper ventilation and heat dissipation (refer to Figure 4.1 for dimensions).
- Avoid mounting in direct sunlight or near heat sources.
5.2 Wiring
All wiring must comply with local and national electrical codes. Use appropriate wire gauges for the VFD's power rating.
Figure 5.1: Internal view of the SU900 VFD showing terminal blocks for power input (R, S, T), motor output (U, V, W), and grounding (PE).
- Power Input (R, S, T): Connect the three-phase 380V AC power supply to the R, S, and T terminals.
- Motor Output (U, V, W): Connect the three-phase motor leads to the U, V, and W terminals.
- Grounding (PE): Connect the protective earth ground to the PE terminal. This is critical for safety.
- Control Terminals: Connect external control signals (e.g., start/stop, speed reference, fault relays) to the designated control terminals as per your application requirements. Refer to the detailed wiring diagram in the full product manual for specific terminal assignments.
6. Operating Instructions
This section outlines the basic steps for operating the SU900 VFD using its integrated control panel.
6.1 Initial Power-Up
- After completing all wiring and safety checks, apply power to the VFD.
- The display will illuminate, showing the default operating status or a startup sequence.
6.2 Basic Operation
- Set Frequency/Speed: Use the Speed Control Knob to set the desired output frequency. The display will show the set frequency in Hz.
- Start Motor: Press the RUN key. The motor will accelerate to the set frequency. The display will show the actual output frequency and current.
- Stop Motor: Press the STOP/RESET key. The motor will decelerate and stop.
6.3 Parameter Programming
To access and modify advanced parameters:
- Press the PRG key to enter programming mode.
- Use the Arrow Keys to navigate through parameter groups and individual parameters.
- Press ENTER to select a parameter for editing.
- Use the Arrow Keys or Speed Control Knob to change the parameter value.
- Press ENTER to save the new value.
- Press PRG again to exit programming mode.
Refer to the comprehensive parameter list in the full product manual for detailed descriptions of all programmable functions.
7. Maintenance
Regular maintenance ensures the reliable operation and extends the lifespan 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 liquids or solvents.
- Fan Inspection: Check the cooling fans (Figure 3.3) for proper operation and ensure they are free from obstructions. Replace noisy or malfunctioning fans.
- Connection Checks: Annually, with power disconnected and discharged, inspect all electrical connections for tightness and signs of corrosion or overheating.
- Environmental Check: Ensure the operating environment remains within specified temperature and humidity ranges.
8. Troubleshooting
This section provides general guidance for common issues. For complex problems or specific error codes, consult the full product manual or contact technical support.
| Problem | Possible Cause | Solution |
|---|---|---|
| VFD does not power on | No input power; Blown fuse; Loose wiring | Check power supply; Inspect fuses; Verify all 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 or check motor. |
| VFD displays an error code | Overcurrent, overvoltage, undervoltage, overheat, etc. | Note the error code and consult the full manual's error code section for specific remedies. Press STOP/RESET to clear. |
| Motor runs erratically | Poor motor tuning; Interference; Loose connections | Perform motor auto-tuning; Check for EMI sources; Secure all connections. |
9. Warranty and Support
The ATUUKOPC SU900 Variable Frequency Drive is covered by a standard manufacturer's warranty against defects in materials and workmanship. For specific warranty terms, duration, and conditions, please refer to the warranty card included with your product or contact ATUUKOPC customer support.
For technical assistance, troubleshooting beyond this manual, or spare parts inquiries, please contact ATUUKOPC customer service through their official website or the contact information provided with your purchase.