Mitsubishi Electric FR-E720-15K FR-E700 Series Variable Frequency Drive

Description

Engineered for highly precise speed and torque regulation in heavy-duty applications, the Mitsubishi Electric FR-E720-15K serves as a robust 15 kW variable frequency drive within the globally trusted FR-E700 Series. Operating on a three-phase 200V class power supply, this compact drive integrates advanced magnetic flux vector control to deliver exceptional torque output even at low operating frequencies, making it an excellent fit for demanding machinery and automated processes.

Features

• Advanced Flux Vector Control: Delivers high starting torque (200% at 0.5 Hz) and optimal motor performance across the speed range.
• Enhanced Overload Tolerances: Robust circuit protection allows temporary overhead limits of up to 200% for 3 seconds.
• Comprehensive Safety Integration: Built-in safe torque off (STO) safety functions compliant with European machinery directives.
• Forced Air Cooling System: Integrated low-noise cooling fans maintain optimal internal temperatures during high-duty operational cycles.
• Flexible Communications: Standard built-in RS-485 serial communication port supports seamless PLC and network integration.

Applications

• Material Handling Systems: Conveyors, sorting lines, and automated warehousing systems.
• Fluid and Air Movement: Heavy-duty industrial blowers, exhaust fans, and centrifugal pump stations.
• Packaging and Food Processing: High-precision dosing pumps, sealing machines, and packaging equipment.
• Machine Tool Components: Drills, grinding spindles, and multi-axis positioning tables requiring consistent low-speed torque.

Technical Specifications

Empirical Engineering Insights

Alternative Models & Compatibility

When replacing legacy FR-E520 systems with the FR-E720-15K, note that physical footprint dimensions and mounting hole locations may vary slightly. Drive parameters can be migrated seamlessly using FR Configurator software; however, any custom terminal assignments for logic sequencing must be manually validated on the new terminal block configuration.

Application Pitfalls & Engineering Notes

The FR-E720-15K requires careful thermal consideration when housed in sealed enclosures. Because it dissipates significant heat at its full 60A load capacity, standard ventilation configurations require at least 50mm of clear space above and below the chassis. When cycling high-inertia loads frequently, the internal 20% braking torque capacity can be exceeded; an external brake resistor is highly recommended to prevent overvoltage trips (E.OV3) during deceleration phases.

Commissioning & Wiring Tips

To mitigate high-frequency electromagnetic interference (EMI) typical of 15 kW carrier frequencies, ensure that shielded motor cables are stripped back and grounded using 360-degree metallic grounding clamps directly to the panel backplate. Separate all low-voltage analog control wiring (0-10V / 4-20mA) from primary power cables by at least 10 cm, running them in separate metallic conduits where possible.

Installation Guidelines