1. Introduction
This manual provides essential information for the safe and efficient use of the FPBIGCHA FR-E740-2.2K-CHT Variable Frequency Drive (VFD) Inverter. Please read this manual thoroughly before installation, operation, or maintenance to ensure proper handling and to prevent potential hazards.
The FR-E740-2.2K-CHT is designed to control the speed of AC motors, offering precise control and energy efficiency for various industrial and commercial applications.
2. Safety Information
WARNING: Electrical shock hazard. Only qualified personnel should perform installation and maintenance.
- Always disconnect power before performing any wiring or maintenance.
- Ensure proper grounding of the inverter and motor.
- Do not operate the inverter with damaged cables or if the casing is open.
- Protect the inverter from moisture, dust, and corrosive gases.
- Verify that the input voltage matches the inverter's specifications.
3. Product Overview
The FPBIGCHA FR-E740-2.2K-CHT is a compact and easy-to-use variable frequency drive. Its key features include:
- Variable Frequency Drive: Provides precise speed control for AC motors.
- Electrical: Designed for robust electrical applications.
- Simple Installation: Engineered for straightforward setup.
- Easy to Use: User-friendly interface for operation.
- Compact Design: Space-saving form factor.
3.1. Control Panel
The front panel of the inverter provides the primary interface for monitoring and control.

Figure 1: Front Panel of the FR-E740-2.2K-CHT Inverter. This image displays the front panel of the FPBIGCHA FR-E740-2.2K-CHT Inverter. It features a digital display showing '50.00 Hz', a rotary knob for navigation, and control buttons including RUN, STOP/RESET, MODE, SET, and PU/EXT. Indicator lights for RUN, MON, PRM, PU, EXT, and NET are also visible.
Key components of the control panel include:
- Digital Display: Shows operational parameters such as frequency (Hz), current (A), and status.
- Rotary Knob: Used for navigating menus and adjusting parameter values.
- RUN Button: Initiates motor operation.
- STOP/RESET Button: Halts motor operation and clears errors.
- MODE Button: Switches between different display modes or menu levels.
- SET Button: Confirms parameter settings.
- PU/EXT Button: Toggles between PU (Program Unit) control and external control modes.
- Indicator Lights: Provide visual feedback on the inverter's status (e.g., RUN, MONitor, PRM parameter, PU control, EXTernal control, NETwork communication).
4. Setup
4.1. Mounting
Mount the inverter vertically on a flat, stable surface in an area with adequate ventilation. Ensure sufficient clearance around the unit for heat dissipation. Avoid mounting in direct sunlight or near heat sources.
4.2. Wiring
All wiring must comply with local and national electrical codes. Refer to the wiring diagram provided with your specific unit for detailed connections. General wiring steps include:
- Connect the main power supply to the inverter's input terminals (R, S, T).
- Connect the motor to the inverter's output terminals (U, V, W).
- Ensure proper grounding of the inverter chassis and the motor frame.
- Connect control wiring for external start/stop, speed reference, and other control signals as required by your application.
CAUTION: Incorrect wiring can damage the inverter and motor, and pose a safety risk.
5. Operating Instructions
5.1. Power On
After completing all wiring and safety checks, apply power to the inverter. The digital display will illuminate, typically showing the default frequency or a standby message.
5.2. Basic Operation (PU Mode)
- Press the PU/EXT button to ensure the inverter is in PU (Program Unit) control mode. The "PU" indicator light should be on.
- Use the Rotary Knob to adjust the desired output frequency. The display will show the set frequency.
- Press the RUN button to start the motor. The "RUN" indicator light will illuminate, and the motor will accelerate to the set frequency.
- To stop the motor, press the STOP/RESET button. The motor will decelerate and stop.
5.3. Parameter Settings
To access and modify parameters:
- Press the MODE button to enter parameter setting mode.
- Use the Rotary Knob to navigate through parameter numbers.
- Press the SET button to view the current value of a selected parameter.
- Rotate the Rotary Knob to change the parameter value.
- Press the SET button again to save the new value.
- Press the MODE button to exit parameter setting mode.
Refer to the detailed parameter list in the full technical manual for specific parameter functions and ranges.
6. Maintenance
Regular maintenance ensures the longevity and reliable operation of your inverter.
- Cleaning: Periodically clean the inverter's exterior and ventilation openings to prevent dust accumulation. Use a soft, dry cloth. Do not use liquid cleaners.
- Inspection: Regularly inspect wiring connections for tightness and signs of wear or damage. Check for any unusual noises or odors during operation.
- Environmental Conditions: Ensure the operating environment remains within the specified temperature and humidity ranges.
WARNING: Always disconnect power before cleaning or inspecting the inverter.
7. Troubleshooting
This section outlines common issues and their potential solutions. For complex problems, contact technical support.
| Problem | Possible Cause | Solution |
|---|---|---|
| Inverter does not power on. | No input power; Blown fuse; Loose connection. | Check power supply; Inspect and replace fuse if necessary; Verify all power connections. |
| Motor does not run when RUN is pressed. | Inverter not in RUN mode; Incorrect frequency setting; Motor wiring issue. | Ensure "RUN" indicator is lit; Check frequency setting; Verify motor wiring (U, V, W). |
| Overcurrent or Overvoltage fault. | Motor overload; Rapid acceleration/deceleration; Input voltage fluctuation. | Reduce motor load; Adjust acceleration/deceleration times; Check input power quality. |
| Display shows an error code. | Specific fault condition. | Refer to the full technical manual for a list of error codes and their remedies. Press STOP/RESET to clear minor faults. |
8. Specifications
The following are general specifications for the FPBIGCHA FR-E740-2.2K-CHT Inverter:
- Product Model: FR-E740-2.2K-CHT
- Brand: FPBIGCHA
- Manufacturer: FPBIGCHA
- Item Weight: 2000 Grams (approximately 4.41 pounds)
- Package Dimensions: 1.18 x 0.79 x 0.39 inches
- Color: One Color
- ASIN: B0F4MH24N4
- Date First Available: April 12, 2025
Note: Specific electrical ratings (e.g., input voltage, output power) are dependent on the exact variant and should be verified on the product label.
9. Warranty and Support
For warranty information, please refer to the documentation included with your purchase or contact the manufacturer directly. FPBIGCHA provides technical support for their products.
For further assistance or technical inquiries, please visit the official FPBIGCHA website or contact their customer service department.