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FR-E740-3.7K Mitsubishi Variable Frequency Inverter 3AC 400V 18A 200-240 V
FR-E740-3.7K Description
The Mitsubishi FR-E740-3.7K is a high-performance, compact 3-phase variable frequency drive (VFD) from the FREQROL E700 series, designed for precise speed control of 3.7kW (5HP) induction motors. It integrates advanced sensorless vector control and V/F control technologies, delivering stable operation across a wide speed range with strong low-speed torque output. This inverter is engineered for industrial automation applications, offering reliable performance, rich control functions, and flexible communication capabilities, making it an ideal choice for various light-to-medium duty industrial equipment.
FR-E740-3.7KFeatures
High-Precision Torque & Speed Control: Adopts optimized sensorless vector control, delivering 150% rated torque at 0.5Hz for smooth heavy-load startup; supports a 1:400 wide speed regulation range (0.2–400Hz).
Strong Overload Capacity: Withstands 150% rated current for 60 seconds and 200% rated current for 3 seconds, ensuring stable operation under transient overloads.
Rich Built-in Functions: Integrates PID closed-loop control, multi-speed operation (15 steps), slip compensation, droop control, and automatic restart after instantaneous power failure.
Flexible Communication: Built-in RS-485 port supporting Modbus RTU protocol; compatible with optional Profibus communication modules for seamless system integration.
Compact & Space-Saving Design: Dimensions of 90mm (W) × 210mm (H) × 180mm (D), weighing ~3.5kg; supports side-by-side installation to save cabinet space.
Comprehensive Protection: Includes overcurrent, overvoltage, undervoltage, overheating, and short-circuit protection; features Safe Torque Off (STO) for enhanced operational safety.
User-Friendly Operation: Equipped with a 4-digit LED display and built-in operation panel; supports parameter setting via FR Configurator software through USB connection.
FR-E740-3.7KMaterials & Applications
Materials
Housing: High-strength flame-retardant engineering plastic (UL94 V-0 rated) for excellent insulation and heat resistance.
Internal Components: High-quality IGBT modules, electrolytic capacitors, and heat sinks for reliable long-term operation; forced air cooling with a built-in fan for efficient heat dissipation.
Terminals: Nickel-plated copper terminals for good conductivity and corrosion resistance.
Applications
Pump & Fan Systems: Constant pressure water supply, exhaust fans, and air conditioning units (energy-saving operation via PID control).
Conveying Equipment: Belt conveyors, roller conveyors, and assembly lines (stable speed regulation and multi-speed switching).
Machine Tools: Small lathes, grinders, and drilling machines (high-precision speed control).
Food & Packaging Machinery: Mixers, filling machines, and packaging equipment (smooth operation and precise control).
Textile & Printing Machinery: Looms, dyeing machines, and printing presses (stable low-speed operation and tension control).
FR-E740-3.7K Important Parameters
Parameter
Specification
Model
FR-E740-3.7K
Series
FREQROL E700
Applicable Motor Capacity
3.7kW (5HP)
Rated Output Capacity
9.0kVA
Rated Output Current
9.5A
Overload Current Rating
150% for 60s, 200% for 3s (inverse-time characteristic)
Input Power Supply
3-phase AC 380–480V, 50/60Hz
Output Frequency Range
0.2–400Hz
Control Method
Sensorless vector control, V/F control
Speed Regulation Range
1:400
Starting Torque
150% rated torque at 0.5Hz
Protection Degree
IP20 (main unit)
Cooling Method
Forced air cooling
Dimensions (W×H×D)
90mm × 210mm × 180mm
Weight
Approx. 3.5kg
Communication Interface
Built-in RS-485 (Modbus RTU), optional Profibus
Built-in Functions
PID control, multi-speed (15 steps), slip compensation, STO
Liability:
WTL is not liable for any personal injury or property damage resulting from the use of this equipment. It is
buyer's responsibility as to the safe handling & operation of this equipment and to verify equipment is
compliance to their machinery.
Our Brands:
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Importer,Exporter,Trading Company,Seller
Year Established:
2010
Total Annual:
1000000-5000000
Employee Number:
100~120
Ecer Certification:
Active Member
Shenzhen Wisdomlong Technology CO.,LTD Mainly engaged in automation parts, PLCS,DCS,sensors, relays, dirves,encoder, servo drive,soft starter,touch screen,instrument,process control,electric transmission and factory automation aspects of the project design,software programming,technical service and ... Shenzhen Wisdomlong Technology CO.,LTD Mainly engaged in automation parts, PLCS,DCS,sensors, relays, dirves,encoder, servo drive,soft starter,touch screen,instrument,process control,electric transmission and factory automation aspects of the project design,software programming,technical service and ...