
The Mitsubishi FR-A700 series is a high-performance variable frequency drive designed for precise motor control in industrial automation applications. Available in two main configurations, the FR-A720 for 200V class applications (0.4K to 90K) and FR-A740 for 400V class applications (0.4K to 500K), this inverter series features advanced control methods including V/F control, advanced magnetic flux vector control, real sensorless vector control, and full vector control with encoder feedback. The series offers exceptional speed accuracy of ±0.01% and torque control precision of ±10% with ±5% repeatability when operated with an encoder. It includes autotuning functionality that can obtain motor specifications in under one minute without rotation, four selectable overload ranges for application flexibility, and comprehensive network connectivity through USB, Modbus-RTU, and optional support for Profibus, CC-Link, CANopen, and SSCNET III. Introduced in 2006 as the successor to the FR-A500 series and discontinued in 2016, it has been replaced by the FR-A800 series.
Item Details
- Brand Name: Mitsubishi Electric
- Manufacturer: Mitsubishi Electric Corporation
- Item Type Name: Variable Frequency Drive (Inverter)
- Product Family / Series: FR-A700 Series
- Model Variants: FR-A720 (200V class), FR-A740 (400V class)
- Regional Variants: Japan, Europe (EC), North America (NA), China (CHT)
Product Specifications
- control_method: Soft-PWM/High carrier frequency PWM (V/F, Advanced magnetic flux vector, Real sensorless vector, Vector control)
- output_frequency_range: 0.2 to 400 Hz (120 Hz max for Real sensorless and vector control)
- speed_control_accuracy: ±0.01% (with encoder)
- torque_control_precision: ±10% accuracy, ±5% repeatability (with encoder)
- overload_current_rating: 150% for 60s, 200% for 3s (inverse time characteristics at 50°C ambient)
- voltage_200V_class: Three-phase 200 to 240V
- voltage_400V_class: Three-phase 380 to 480V
- voltage_600V_class: Available (600V models)
- motor_capacity_range_200V: 0.4 kW to 90 kW
- motor_capacity_range_400V: 0.4 kW to 500 kW
- communication_interfaces: USB (Ver1.1), Modbus-RTU (standard)
- optional_networks: Profibus-DP, CC-Link, DeviceNet, CANopen, EtherNet, SSCNET III
- protection_structure: IP20 (22K or less), NEMA1/UL Type1 (North America)
- autotuning: Less than 1 minute (stationary mode available)
Additional Details
- Lifecycle Status: Discontinued (2016)
- Certifications / Approvals: UL, cUL compliant
- Service Life: Introduced 2006, Discontinued 2016
- Replacement Product: FR-A800 Series
- Compatible Motors: Mitsubishi standard (SF-JR), Constant-torque (SF-HRCA), Vector dedicated (SF-V5RU, SF-THY), IPM motor (MM-CF)
- Ambient Temperature: Maximum 50°C
- Self Diagnostics: Pre-alarm at 40% fan performance degradation
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