Mitsubishi Electric FR-A840-02600-2-60 FR-A800 Inverter

Description

Optimizing industrial motor drive efficiency, the Mitsubishi Electric FR-A840-02600-2-60 functions as a high-capacity variable frequency drive within the premier FR-A800 Series. This unit provides exceptional vector control performance and is built specifically for three-phase 400V class applications. Equipped with conformally coated circuit boards (Class 3C2), it offers robust defense against harsh ambient environments containing dust or corrosive gases, though it does not utilize plated conductors. With an SLD (Super Light Duty) rating of 260A, it is engineered for precise speed and torque regulation of induction and permanent magnet motors in heavy industry.

Features

• Advanced Real Sensorless Vector Control and Vector Control for ultimate motor response and speed accuracy.
• Conformally coated circuit boards conforming to IEC 60721-3-3 Class 3C2 for increased environmental resilience.
• Built-in PLC functionality allowing customized program execution and standalone machine control.
• Integrated Safety Torque Off (STO) functional safety compliance to minimize system downtime.
• Energy-saving tuning algorithms that optimize excitation currents according to real-time load requirements.

Applications

• Large-scale pump and fan systems requiring precise flow and pressure regulation.
• Heavy-duty conveyor lines and material handling machinery.
• Extruders, mixers, and centrifuges in chemical and plastics processing.
• Hoists, cranes, and gantry systems requiring precise low-speed torque control.

Technical Specifications

Empirical Engineering Insights

Alternative Models & Compatibility

When upgrading from legacy FR-A740 series drives, parameter conversion can be performed seamlessly via FR Configurator2 software. Be aware that the physical footprint and mounting centers of this 58 kg chassis may differ slightly from older generations. Always verify enclosure depth limits to accommodate the cooling fan projection.

Application Pitfalls & Engineering Notes

Due to its high power rating, heat dissipation must be carefully planned. This unit rejects significant thermal energy under full-load operation. In enclosed electrical panels, forced exhaust ventilation or air conditioning is mandatory to keep ambient air surrounding the inverter below 50 degC. For high-inertia loads, a dynamic braking resistor or regenerative unit must be correctly sized to avoid overvoltage trips (E.OV3).

Commissioning & Wiring Tips

Ensure the input power factor correcting DC reactor (FR-HEL) is installed if compliance with harmonic guidelines is required. Terminal layout control wiring must be run in shielded twisted-pair cables, keeping low-voltage analog cables separated from 400V motor and mains cables by at least 30 cm to prevent EMI noise coupling. Set parameter 9 (Electronic Thermal O/L Relay) matching the exact motor nameplate current immediately upon initial power-up.

Installation Guidelines