Optimizing energy consumption in heavy-duty pump and fan applications, the Mitsubishi Electric FR-F740-45K-CHT1 variable frequency drive provides precise three-phase speed control within the F700 Series automation architecture. This high-capacity inverter is engineered to maximize system efficiency through advanced optimum excitation control, minimizing electrical losses in induction motors. Note that the FR-F740-45K-CHT1 is now discontinued by the manufacturer; the recommended modern replacement is the FR-F840-00930-2-60 power-saving frequency inverter, which offers updated control algorithms and physical drop-in compatibility for most fan and blower systems.
| Parameter | Specification Value |
|---|---|
| Manufacturer | Mitsubishi Electric |
| Model Reference | FR-F740-45K-CHT1 |
| Series Name | F700 Series |
| Replacement Part Number | FR-F840-00930-2-60 |
| Applied Motor Capacity | 45 kW |
| Rated Capacity | 64.8 kVA |
| Rated Output Current | 85 A (at 40 degC ambient) / 72 A (at 50 degC ambient) |
| Overload Current Rating | 120% for 60 seconds, 150% for 3 seconds (inverse time characteristics) |
| Rated Input Voltage / Frequency | Three-phase 380 to 480 V AC, 50Hz / 60Hz |
| Allowable Voltage Fluctuations | 323 to 528 V AC (50Hz / 60Hz) |
| Control Methodology | V/F control, Advanced magnetic flux vector control, Optimum excitation control |
| Cooling Method | Forced air cooling |
| Net Weight | 35 kg |
| Shipping Weight (Calculated) | 40 kg |
| Terminal / Pin Label | Functional Assignment |
|---|---|
| R/L1, S/L2, T/L3 | Three-phase AC power input terminals |
| U, V, W | Three-phase variable frequency output terminals to the motor |
| STF / STR | Start Forward / Start Reverse digital control inputs |
| SD | Common terminal for contact input signals (sink) and isolated 24 V DC power common |
| RX / TX / SG | Modbus RTU serial RS-485 interface connection points |
When migrating from the discontinued FR-F740-45K-CHT1 to the current-generation FR-F840-00930-2-60, verify the overall envelope size. While both drives are optimized for 45 kW loads, physical terminal block layout structures differ slightly. The F800 series offers superior parameter cloning capability via a built-in USB port, removing the reliance on custom serial communications cables during setup.
This unit is rated for variable torque systems. Operating it on constant-torque applications (such as cranes or positive displacement pumps) can cause persistent overcurrent trip faults (E.OC1 to E.OC3) on ramp-up. If the fan or pump system exhibits high backdraft or regenerative loads during braking, an external dynamic braking resistor must be specified to prevent DC bus overvoltage trips (E.OV2).
To ensure accurate overload protection, ensure that Parameter 9 (Electronic Thermal O/L Relay) is programmed to match the exact nameplate full-load current (FLA) of the attached motor rather than the drive’s maximum current rating. Ensure that the logic control jumper (Sink/Source selector) on the control board is set correctly before landing your control wiring to avoid potential logic circuit damage.
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Manufacturer: Mitsubishi Electric
Product No.: FR-F740-45K-CHT1
Country of origin:United States
Product Type: Variable Frequency Drives
Payment: T/T, Western Union
Weight: 35000g
Shipping port: Xiamen
Warranty: 12 months
Optimizing energy consumption in heavy-duty pump and fan applications, the Mitsubishi Electric FR-F740-45K-CHT1 variable frequency drive provides precise three-phase speed control within the F700 Series automation architecture. This high-capacity inverter is engineered to maximize system efficiency through advanced optimum excitation control, minimizing electrical losses in induction motors. Note that the FR-F740-45K-CHT1 is now discontinued by the manufacturer; the recommended modern replacement is the FR-F840-00930-2-60 power-saving frequency inverter, which offers updated control algorithms and physical drop-in compatibility for most fan and blower systems.
| Parameter | Specification Value |
|---|---|
| Manufacturer | Mitsubishi Electric |
| Model Reference | FR-F740-45K-CHT1 |
| Series Name | F700 Series |
| Replacement Part Number | FR-F840-00930-2-60 |
| Applied Motor Capacity | 45 kW |
| Rated Capacity | 64.8 kVA |
| Rated Output Current | 85 A (at 40 degC ambient) / 72 A (at 50 degC ambient) |
| Overload Current Rating | 120% for 60 seconds, 150% for 3 seconds (inverse time characteristics) |
| Rated Input Voltage / Frequency | Three-phase 380 to 480 V AC, 50Hz / 60Hz |
| Allowable Voltage Fluctuations | 323 to 528 V AC (50Hz / 60Hz) |
| Control Methodology | V/F control, Advanced magnetic flux vector control, Optimum excitation control |
| Cooling Method | Forced air cooling |
| Net Weight | 35 kg |
| Shipping Weight (Calculated) | 40 kg |
| Terminal / Pin Label | Functional Assignment |
|---|---|
| R/L1, S/L2, T/L3 | Three-phase AC power input terminals |
| U, V, W | Three-phase variable frequency output terminals to the motor |
| STF / STR | Start Forward / Start Reverse digital control inputs |
| SD | Common terminal for contact input signals (sink) and isolated 24 V DC power common |
| RX / TX / SG | Modbus RTU serial RS-485 interface connection points |
When migrating from the discontinued FR-F740-45K-CHT1 to the current-generation FR-F840-00930-2-60, verify the overall envelope size. While both drives are optimized for 45 kW loads, physical terminal block layout structures differ slightly. The F800 series offers superior parameter cloning capability via a built-in USB port, removing the reliance on custom serial communications cables during setup.
This unit is rated for variable torque systems. Operating it on constant-torque applications (such as cranes or positive displacement pumps) can cause persistent overcurrent trip faults (E.OC1 to E.OC3) on ramp-up. If the fan or pump system exhibits high backdraft or regenerative loads during braking, an external dynamic braking resistor must be specified to prevent DC bus overvoltage trips (E.OV2).
To ensure accurate overload protection, ensure that Parameter 9 (Electronic Thermal O/L Relay) is programmed to match the exact nameplate full-load current (FLA) of the attached motor rather than the drive’s maximum current rating. Ensure that the logic control jumper (Sink/Source selector) on the control board is set correctly before landing your control wiring to avoid potential logic circuit damage.
Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Country of origin |
United States
|
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