Description

Designed to deliver high-performance motor control, the FR-E720-3.7K variable frequency drive provides precise speed and torque regulation for three-phase AC induction motors. This micro-drive, a core component of the rugged FR-E700 series, incorporates advanced magnetic flux vector control to guarantee dependable starting torque and stable low-speed operation. It operates on a three-phase 200V class power input, efficiently converting electrical parameters to drive standard motors up to 3.7 kW in demanding automation environments.

The unit features a highly compact, space-saving design with side-by-side mounting capabilities, making it ideal for integration into crowded electrical control enclosures. With its comprehensive safety functions, integrated USB port for simplified configuration, and Modbus-RTU communication capabilities, this drive functions seamlessly across distributed control topologies and stand-alone machine architectures.

Features

• Advanced magnetic flux vector control ensures high starting torque (200% at 0.5 Hz).
• Integrated PID control loop allows automated speed adjustment based on pressure, flow, or temperature feedback.
• Built-in Modbus-RTU serial communication protocol via standard RJ-45 physical interface.
• Software-controlled safety stop function compliant with EN ISO 13849-1 Category 3/PLd.
• Active self-diagnostics monitor fan lifetime, capacitor degradation, and operating hours.
• Built-in digital dial and display panel for quick parameter access, configuration, and monitoring.

Applications

• Conveyors and material handling transport systems.
• Centrifugal pumps and industrial fan speed modulation.
• Packaging machinery and commercial food processing lines.
• Textile machinery and machine tool spindle regulation.

Technical Specifications

Installation Guidelines

• Mounting Position: Install the inverter vertically on a flat, non-flammable backplate or DIN rail system to ensure adequate vertical convection airflow.
• Clearances: Maintain a minimum clearance of 50 mm above and below, and at least 10 mm on both sides of the enclosure chassis to facilitate proper thermal dissipation.
• Grounding: Ensure a low-impedance connection to the main system ground terminal to minimize electromagnetic interference (EMI) and meet electrical safety codes.
• Wiring: Route control signal wires separately from the high-power input/output AC cables to prevent cross-talk and signal distortion.

Compliance and Certifications

• CE (Low Voltage Directive, EMC Directive)
• UL Listed / cUL Listed (under File E127016)
• KC (Korea Certification)