The Mitsubishi FR-A520-2.2K is a transistorized inverter for three-phase AC motor speed control, delivering 2.2 kW (3 HP) output at 5.5 kVA power capacity. Part of the FR-A500 series, it employs advanced flux vector control with sensorless operation to achieve high-precision speed and torque regulation, including performance at ultra-low speeds. The inverter incorporates online auto-tuning, soft-PWM control for acoustic noise suppression, and high-response current limiting. Speed control spans 1:120 across a 0.2–400 Hz frequency range. Additional capabilities include PID control for process loops and brake sequence functionality for load-holding applications.
– Technical Specifications
• Input: 200–240 VAC, 3-phase
• Output: 200–240 VAC
• Motor rated output: 2.2 kW (3 HP)
• Input current: 16 A
• Rated output current: 11 A (constant torque) / 12 A (variable torque)
• Frequency range: 0.2–400 Hz
• Speed control ratio: 1:120 (0.5–60 Hz driving mode)
• Dimensions: 150 × 260 × 140 mm
• Weight: 3.5 kg
• Enclosure rating: IP20
• Operating temperature: −10°C to +40°C
– Key Features
• Advanced flux vector control with sensorless operation
• Online auto-tuning for optimized motor performance
• Soft-PWM control reduces acoustic noise and RFI
• High-response current limit function
• PID control capability for closed-loop applications
• Brake sequence function for conveyor and load-holding duty
• Speed control ratio of 1:120
– Typical Applications
• Precision speed and torque control requiring low-speed operation
• HVAC and process control via PID loop
• Conveyor and material handling with dynamic braking
• Industrial motor drives demanding low acoustic emissions
– Compatibility & Integration
• Compatible with FR-DU04 control panel and FR-PU04 parameter unit
• RS-485 communication support
• Multiple digital inputs: STF, STR, STOP, JOG, RT, MRS, RES, SD, PC
• Requires mounting on non-combustible surface
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