1. Introduction
This manual provides essential information for the safe and efficient installation, operation, and maintenance of your TIANHAO 3 Phase 380V Variable Frequency Inverter (VFD). Please read this manual thoroughly before attempting to install or operate the device. Keep this manual for future reference.
Figure 1: TIANHAO 3 Phase 380V Variable Frequency Inverter
Video 1: Overview of the TIANHAO M-Driver Inverter, highlighting its compact size, fashionable design, ease of use, low cost, and available power ranges from 0.75kW to 630kW.
2. Safety Information
Always observe the following safety precautions to prevent personal injury or damage to the equipment:
- Only qualified personnel should install, operate, and maintain this device.
- Disconnect all power before performing any wiring or maintenance.
- Ensure proper grounding of the inverter and connected equipment.
- Do not touch electrical components when power is applied.
- Verify input voltage and frequency match the inverter's specifications.
- Protect the inverter from moisture, dust, and corrosive gases.
- Ensure adequate ventilation to prevent overheating.
3. Product Overview
The TIANHAO Variable Frequency Inverter is designed for precise speed control of 3-phase AC motors. It features a compact design and user-friendly interface.
3.1 Keypad Types
The inverter is available with two types of keypads:
- LED Keypad: Provides essential numerical display for frequency and status.
- LCD Keypad: Offers a more detailed display with additional information and improved readability.
Figure 2: LED Keypad (left) vs. LCD Keypad (right)
4. Specifications
| Attribute | Value |
|---|---|
| Model Number | M900-0150G3, M900-0185G3 |
| Input Rated Voltage and Frequency | 3PH 380V 50/60Hz |
| Output Voltage and Frequency | 3PH 380V 0~500Hz |
| Nominal Voltage | 380V~480V |
| Material | Stainless steel |
| Type | Other |
| Origin | Mainland China |
| High-concerned chemical | None |
| Approximate Package Weight | 9.0 kg |
| Approximate Package Dimensions (L x W x H) | 50 cm x 50 cm x 50 cm |
5. Setup and Installation
5.1 Wiring Diagram
Refer to the following diagram for proper electrical connections. Ensure all connections are secure and comply with local electrical codes.
Figure 3: General Wiring Diagram
- 3-Phase Input (R, S, T): Connect the 380V AC power supply to these terminals.
- Ground: Connect to a reliable earth ground.
- 3-Phase Output (U, V, W): Connect to the 3-phase AC motor.
- Brake Resistor/Unit: Connect if dynamic braking is required.
- Connect PLC: Use the external terminal block for PLC integration.
- Connect External Terminal: For control signals and external devices.
5.2 Terminal Block Overview
A close-up of the terminal block shows the specific connection points:
Figure 4: Terminal Block Detail
Ensure correct polarity and secure connections for all wiring.
6. Operating Instructions
6.1 Basic Operation
- RUN Button: Initiates motor operation.
- STOP Button: Halts motor operation.
- PRGM Button: Enters programming mode to adjust parameters.
- Rotary Knob: Used for frequency adjustment and parameter value changes.
- Up/Down Arrows: Navigate through menus and adjust values.
6.2 Constant Pressure Water Supply Application Example
The VFD can be configured for applications such as constant pressure water supply. Below is an example wiring and parameter setup:
Figure 5: Constant Pressure Water Supply Setup
In this setup, a pressure transmitter (4-20mA) provides feedback to the VFD's AI2 input. The VFD then adjusts the 3-phase water pump speed to maintain a constant target pressure.
Key parameters for this application:
- F0-01 = 6: Sets the control mode to constant pressure water supply.
- F0-08 = 1: Configures the coast-to-stop function.
- F5-02 = 1: Assigns the AI2 input for feedback.
- F5-08 = 1: Sets the AI2 input to 4-20mA signal type.
7. Maintenance
Regular maintenance ensures optimal performance and longevity of your VFD:
- Cleaning: Periodically clean the inverter's exterior and cooling fins to prevent dust accumulation, which can impede heat dissipation. Use a soft, dry cloth.
- Inspection: Regularly check for loose connections, damaged wiring, or unusual noises/vibrations.
- Environmental Conditions: Ensure the operating environment remains within specified temperature and humidity ranges. Avoid exposure to direct sunlight, excessive vibration, or corrosive substances.
- Fan Check: Inspect cooling fans for proper operation and cleanliness. Replace if noisy or not functioning correctly.
8. Troubleshooting
If you encounter issues, consider the following common troubleshooting steps:
- No Power: Check the main power supply, circuit breaker, and all input wiring connections.
- Motor Not Running: Verify the RUN command is active, check motor wiring, and ensure no fault codes are displayed.
- Overcurrent/Overvoltage Fault: Check for motor overload, short circuits, or unstable power supply. Review acceleration/deceleration times.
- Overheat Fault: Ensure adequate ventilation, clean cooling fins, and check ambient temperature.
- Incorrect Speed: Verify frequency settings, input signal (if external control), and motor parameters.
For persistent issues or specific fault codes, consult the detailed fault code section in the complete product manual (if available) or contact technical support.
9. User Tips
- Always ensure the VFD is properly sized for your motor and application to prevent overload and ensure efficient operation.
- Take time to understand the programming parameters. Many VFD issues stem from incorrect parameter settings rather than hardware faults.
- Consider using shielded cables for motor connections to minimize electromagnetic interference (EMI), especially in sensitive environments.
10. Warranty and Support
This product is manufactured to high-quality standards. For any technical assistance or support, please contact the seller or manufacturer directly. Ensure you have your product model and serial number ready when contacting support.
Contact Information:
- WeChat: +86 18684669507
- E-mail: z851021@qq.com
- WhatsApp: +86 151 1111 7428
