Manufacturer: Mitsubishi Electric
Product No.: FR-A740-22K-CHT
Country of origin:United States
Product Type: Variable Frequency Drives
Payment: T/T, Western Union
Weight: 500g
Dimensions: 430 x 290 x 260 mm
Shipping port: Xiamen
Warranty: 12 months
Designed for exceptional motor control in high-demand environments, the Mitsubishi Electric FR-A740-22K-CHT provides precise variable frequency speed and torque management for three-phase induction motors. As a part of the high-performance A700 Series, this 22 kW drive features advanced vector control algorithms and robust electrical protections. It is built to ensure seamless operation under continuous heavy-duty loads while maintaining excellent thermal efficiency.
| Manufacturer | Mitsubishi Electric |
| Model Number | FR-A740-22K-CHT |
| Series Type | A700 Series |
| Applicable Motor Capacity | 22 kW |
| Rated Output Current | 44 A |
| Rated Capacity | 32.8 kVA |
| Rated Voltage (Output) | Three-phase 380V to 480V |
| Rated Input AC Voltage / Frequency | Three-phase 380V to 480V, 50Hz/60Hz |
| Permissible AC Voltage Fluctuation | 323V to 528V, 50Hz/60Hz |
| Permissible Frequency Fluctuation | +/- 5% |
| Power Supply Capacity | 41 kVA |
| Protective Rating | IP20 Enclosed Type |
| Cooling Method | Forced Air Cooling |
| Country of Origin | Japan |
| Shipping Weight (Calculated) | 14.0 kg |
| Package Dimensions (Calculated) | 430 x 290 x 260 mm |
| Terminal Symbol | Terminal Name | Functional Assignment |
|---|---|---|
| R/L1, S/L2, T/L3 | AC Power Input | Connection to commercial three-phase mains supply. |
| U, V, W | Inverter Output | Connection to the external three-phase induction motor. |
| P/+, PR | Braking Resistor | Connection point for dynamic braking options. |
| STF / STR | Forward / Reverse Start | External signal command triggers for directional rotation. |
| SD | Signal Common (Sink) | Common ground terminal for digital inputs configured to sink logic. |
The "CHT" suffix designates a localized firmware and default parameter configuration optimized for standard Asian markets, meaning the default base frequency is 50Hz and digital control terminals default to sink (negative) logic. This drive is a direct drop-in replacement for standard FR-A740-22K units, provided parameters like Pr. 3 (Base Frequency) and the internal logic jumper are verified and calibrated to your local wiring standards.
For dynamic systems with highly cyclical braking or large physical inertia, the drive's built-in 20% torque permissible duty might trigger regenerative overvoltage faults (E.OV3). Integrating a dedicated external dynamic braking unit (such as the FR-BU2 series) alongside dynamic resistors is highly recommended to protect the internal DC bus. When mounting inside completely closed IP54 panels, ensure cabinet dimensions allow the dissipation of approximately 650 Watts of thermal energy produced by the drive at full load.
Always isolate the control signaling cable from high-voltage motor output lines by keeping a separation distance of at least 10 cm, or utilize dedicated metal conduit separation. For analog control signals (terminals 2, 4, 1), use shielded twisted-pair cabling and tie the shield to control ground (terminal 5) at the drive end only. This mitigates high-frequency noise from corrupting speed references.
Ensure all primary AC feed lines are de-energized prior to beginning installation. The internal DC bus capacitors contain dangerous residual charge. Wait a minimum of 10 minutes after disconnecting power, and confirm the physical "CHARGE" LED on the control board is fully extinguished before performing any terminal modifications or wire connections.
Vertical Orientation: Always mount the drive vertically inside the panel to leverage built-in forced-air convection dynamics.
Clearance Tolerances: Maintain at least 100 mm of open vertical space above and below the device, and a minimum of 50 mm horizontal distance from side components.
Protective Earthing: Connect the dedicated ground terminal (PE) to an active system ground. Keep grounding resistance below 10 ohms to prevent electrostatic interference.
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| Country of origin |
United States
|
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