FR-E740-3.7K Description

FR-E740-3.7K Features

• 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-E740-3.7K Materials & 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

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.

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