Mitsubishi FR-D720S-0.4K-CHT FREQROL-D700 Single‑Phase 0.4kW Micro Inverter

Mitsubishi Electric FREQROL‑D700 FR‑D720S‑0.4K‑CHT is a compact micro inverter for controlling three‑phase induction motors using a single‑phase 200‑240 V AC power supply. Rated output 0.4 kW (0.5 HP) at 200‑240 V, 3‑phase. Built‑in RS‑485 communication (Modbus‑RTU, Mitsubishi inverter protocol), general‑purpose magnetic flux vector control for enhanced low‑speed torque (150% at 1 Hz), and STO safety function (SIL2/PLd). Self‑cooling, IP20 enclosure. Designed for upgrading single‑phase equipment to variable speed control and for general three‑phase motor speed regulation in industrial automation.

Applications:

• Light‑duty conveyor speed regulation

• Fan and blower speed control

• Small pump speed control and fluid handling

• HVAC systems

• General OEM machine automation

Core Specifications:

• Motor power: 0.4 kW (0.5 HP)

• Output current: 2.5 A

• Output capacity: 1.0 kVA

• Supply voltage: 1‑phase 200‑240 V AC, 50/60 Hz (permissible fluctuation 170‑264 V)

• Output voltage: 3‑phase 200‑240 V AC (max.)

• Output frequency: 0.2‑400 Hz

• Overload capacity: 150% for 60 s, 200% for 0.5 s (inverse‑time characteristic)

• Control methods: V/F control, general‑purpose magnetic flux vector control, optimum excitation control

• Starting torque: ≥150% at 1 Hz (vector control)

• Brake transistor: built‑in

• Safety function: STO (Safe Torque Off) – SIL2/PLd

• Communication: RS‑485 (Modbus‑RTU, Mitsubishi inverter protocol)

• Display: integrated digital dial/keypad (LED)

• Enclosure rating: IP20

• Cooling: self‑cooling (fanless)

• Weight: approx. 0.9‑1.0 kg

• Dimensions (W × H × D): approx. 68 mm × 128 mm × 112.5 mm

• Operating temperature: –10 °C … +50 °C

Advanced Specifications:

• Carrier frequency: Soft‑PWM / adjustable high carrier frequency PWM

• Acceleration/deceleration time: 0.1–3600 s (linear or S‑curve)

• Multi‑speed operation: up to 16 pre‑set speeds

• PID control: built‑in for closed‑loop process control

• Auto‑tuning: offline auto‑tuning for motor parameters

• Protection functions: overcurrent, overvoltage, undervoltage, overload (electronic thermal), output short‑circuit, earth fault, heatsink overheat, input phase loss, output phase loss, CPU fault, brake transistor alarm

System Integration:

• Belongs to the Mitsubishi Electric FREQROL‑D700 series.

• Converts single‑phase 200‑240 V AC input to three‑phase 200‑240 V AC output for standard three‑phase induction motors.

• RS‑485 communication via PU connector supports Modbus‑RTU and Mitsubishi inverter protocol for parameter setting, monitoring, and control.

• Parameter setting and monitoring via integrated digital dial/keypad, optional FR Configurator software, or FR‑PA07 enclosure surface operation panel.

• DIN rail mounting possible with optional FR‑UDA01 mounting adapter.

Standards & Compliance:
Refer to manufacturer official documentation for certification and compliance details.

Related Products:

• FR‑D720S‑0.2K‑CHT – 0.2 kW single‑phase input version (lower power)

• FR‑D720S‑0.75K‑CHT – 0.75 kW single‑phase input version (higher power)

• FR‑D720S‑1.5K‑CHT – 1.5 kW single‑phase input version (higher power)

• FR‑PA07 – enclosure surface operation panel (optional, requires FR‑CB20□ connection cable)

• FR‑CB20□ – parameter unit connection cable

• FR‑UDA01 – DIN rail mounting adapter