Mitsubishi FR-F740-00620-EC VFD – Industrial Frequency Inverter 3-Phase – 6.2 A / 400V Drive
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Mitsubishi FR-F740-00620-EC is a high-performance industrial Variable Frequency Drive (VFD) from the FR-F740 series, designed for precise speed control of three-phase AC motors in demanding automation environments.
This inverter is optimized for pump, fan, and general industrial motor control applications, offering stable torque output, energy efficiency, and advanced protection functions.
The FR-F740 series is known for reliability in continuous operation and integration into control cabinets across manufacturing, HVAC, and process industries.
General Specifications
| Parameter | Specification |
|---|---|
| Rated Motor Power | 30 kW |
| Rated Output Current | 62 A |
| Power Supply Voltage | 3-phase 380…480 V AC |
| Output Voltage | 3-phase AC, 0 V to supply voltage |
| Output Frequency Range | 0.5…400 Hz |
| Cooling Method | Forced air cooling |
| Protection Class | IP20 |
| Weight | 13 kg |
| Dimensions (W × H × D) | 250 × 400 × 190 mm |
Rated motor power corresponds to the maximum permissible power when using a standard 4-pole Mitsubishi Electric motor.
2. Overload Capacity Modes
| Mode | 60 s Overload | 3 s Overload | Typical Applications |
|---|---|---|---|
| SLD (Super Light Duty) | 110% | 120% | Pumps, fans |
| LD (Light Duty) | 120% | 150% | Conveyors, centrifuges |
| ND (Normal Duty) | 150% | 200% | General industrial |
| HD (Heavy Duty) | 200% | 250% | High torque loads |
3. Output Ratings
| Parameter | SLD | LD |
|---|---|---|
| Rated Motor Power | 30 kW | 30 kW |
| Rated Current | 62 A | 57 A |
| Max Current (60 s) | 68.2 A | 68.4 A |
| Max Current (3 s) | 74.4 A | 85.5 A |
| Apparent Output Power | 47.3 kVA | 43.4 kVA |
4. Input Specifications
| Parameter | Specification |
|---|---|
| Input Voltage | 3-phase 380–480 V AC (−15% / +10%) |
| Voltage Range | 323–528 V |
| Input Frequency | 50 / 60 Hz ±5% |
| Rated Input Power | 57 kVA (SLD) / 52 kVA (LD) |
5. Control Characteristics
| Parameter | Specification |
|---|---|
| Control Method | V/F control, optimal excitation control, simple magnetic flux vector control |
| Modulation | Sinusoidal PWM, Soft PWM |
| Carrier Frequency | 0.7 – 14.5 kHz (adjustable) |
| Starting Torque | 120% at 3 Hz (Simple Flux Vector Control) |
| Torque Boost | Manual torque boost |
| Acceleration / Deceleration Time | 0 – 3600 s (separately adjustable) |
| Ramp Characteristics | Linear or S-curve selectable |
| DC Braking | 0–120 Hz; braking time 0–10 s; braking voltage 0–30% |
| Current Limit | Adjustable 0–150% |
6. Frequency Accuracy & Resolution
| Parameter | Specification |
|---|---|
| Digital Frequency Resolution | 0.01 Hz |
| Analog Frequency Resolution | 0.015–0.06 Hz (depending on input type) |
| Analog Accuracy | ±0.2% (25 ± 10°C) |
| Digital Accuracy | ±0.01% |
7. Analog & Digital Inputs
Analog Inputs
| Terminal | Signal Type |
|---|---|
| Terminal 2, 4 | 0–5 V, 0–10 V, 0/4–20 mA |
| Terminal 1 | ±5 V, ±10 V |
Digital Inputs (Selectable Functions)
-
Speed selection
-
Second parameter set
-
Jog operation
-
Auto restart
-
External thermal contact
-
PID control
-
Forward / reverse rotation
-
Inverter reset
-
DC brake activation
-
Control mode selection
-
Self-hold start signal
-
External stop
-
PU control selection
-
Communication mode
(Up to 12 functions assignable via parameters 178–189)
8. Output Signals
Selectable Output Functions (7 assignable)
-
Frequency detection
-
Overload warning
-
Undervoltage warning
-
Zero current detection
-
PID upper/lower limit
-
Ready signal
-
Output current monitoring
-
Maintenance signal
-
Alarm outputs (relay & open collector)
-
Direct mains bypass control
(Parameters 190–196)
9. Optional Expansion (FR-A7AY / FR-A7AR)
Additional assignable outputs (Parameters 313–319):
-
Main circuit capacitor life
-
Control circuit capacitor life
-
Cooling fan lifetime
-
Inrush current limiting circuit lifetime
10. Analog Outputs
Selectable monitoring signals:
-
Output frequency
-
Motor current
-
Output voltage
-
Frequency reference
-
DC bus voltage
-
Motor load
-
Energy saving
-
PID setpoint / actual value
11. Display & Monitoring (FR-PU07 / FR-DU07)
| Monitoring Values |
|---|
| Output frequency |
| Motor current |
| Output voltage |
| Alarm codes |
| Operating time |
| Input/output power |
| DC bus voltage |
| Energy saving |
| PID values |
| I/O terminal status |
Last 8 alarm events stored in memory.
12. Protection Functions
-
Overcurrent (accel / decel / steady state)
-
Overvoltage
-
Inverter thermal protection
-
Motor thermal protection
-
Heatsink overheat
-
Phase loss (input/output)
-
Short circuit (output/ground)
-
Undervoltage
-
Communication fault
-
Analog input fault
-
Fan fault
-
CPU error
-
External brake module overload
-
Parameter error
-
DC 24V short circuit
13. Power Loss
| Mode | Power Loss |
|---|---|
| SLD | 0.81 kW |
| LD | 0.71 kW |