Manufacturer: Mitsubishi Electric
Product No.: FR-A740-2.2K-CHT
Country of origin:United States
Product Type: Variable Frequency Drives
Payment: T/T, Western Union
Weight: 4000g
Shipping port: Xiamen
Warranty: 12 months
Regulating industrial motor speed with exceptional torque control, the Mitsubishi Electric FR-A740-2.2K-CHT is a high-performance three-phase 400V variable frequency drive designed for heavy-duty applications. Part of the robust FR-A700 Series, this 2.2 kW (3 HP) inverter features advanced magnetic flux vector control and real sensorless vector control, ensuring stable speed regulation even at ultra-low frequencies. Engineered to survive harsh manufacturing environments, it serves as an essential automation component for precise machinery synchronization, fan/pump speed regulation, and torque-limiting applications.
| Specification Parameter | Value / Rating |
|---|---|
| Manufacturer | Mitsubishi Electric |
| Model Number | FR-A740-2.2K-CHT |
| Product Series | FR-A700 (A740 Class) |
| Input Voltage / Frequency | 3-Phase 380 to 480 V AC, 50Hz / 60Hz |
| Applicable Motor Capacity | 2.2 kW (3 Horsepower) |
| Output Current Rating | 6.0 A (LD) / 5.0 A (HD) |
| Output Frequency Range | 0.2 to 400 Hz |
| Control Modes Available | V/F Control, Advanced Magnetic Flux Vector Control, Real Sensorless Vector Control |
| Enclosure Rating | IP20 (Open Type) |
| Ambient Operating Temperature | -10 to 50 degC (non-freezing) |
| Terminal Screw Size | M3 x 35 mm (Control terminals) |
| Shipping Weight (Calculated) | 4.0 kg (8.82 lbs) |
The FR-A740-2.2K-CHT serves as a direct upgrade to the older FR-A540-2.2K series. For facilities transitioning to the newer FR-A840 series, the FR-A840-00126-2.6K is the designated replacement. When migrating configuration parameters, use the FR Configurator software to import and convert parameter tables seamlessly, but pay special attention to the terminal block mapping if relying on built-in PLC functions.
In high-inertia fan applications, decelerating too rapidly can generate regenerative energy back into the drive, triggering an E.OV3 (Overvoltage during deceleration) safety fault. To prevent downtime under high-inertia loads, integrate a dedicated external braking resistor (FR-ABR-H2.2K) and ensure parameter 30 (Regenerative function selection) is configured correctly.
Always route the control signal wiring (using shielded twisted pair cables) completely separate from the main motor and power input lines to mitigate electro-magnetic interference (EMI). Terminal connections for control logical inputs are secure-clamp style; avoid using bare stranded copper wires without crimp ferrules, as this can lead to intermittent feedback signals.
Isolate and lock out all AC main line input feeds before attempting terminal wiring or mounting procedures. Internal DC-bus capacitors retain high-voltage charge after de-energization. Wait at least 10 minutes and verify with a reliable multimeter that the voltage across terminals P/+ and N/- is below 30 V DC before initiating hands-on physical contact.
Enclosure Mounting: Mount the inverter vertically onto a flat, non-flammable surface inside an electrical cabinet. Maintain a minimum horizontal spacing clearance of 50 mm and vertical clearance of 100 mm for unrestricted convective heat dissipation.
Power Connections: Connect the three-phase AC input supply to terminals R/L1, S/L2, and T/L3. Connect the output motor terminals to U, V, and W. Ensure the grounding terminal (PE) is securely bonded to the plant ground grid.
Startup Initialization: Turn on the input power. Set Parameter 9 (Electronic thermal O/L relay) to match the motor's rated plate current before executing any physical rotation tests.
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| Country of origin |
United States
|
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