Mitsubishi Electric FR-A840-90K-1 FR-A800 Series Variable Frequency Drive

Description

Designed for heavy-duty industrial applications, the FR-A840-90K-1 variable frequency drive provides exceptional motor control and torque performance. Part of the renowned Mitsubishi Electric FR-A800 Series, this high-capacity inverter module is engineered to regulate three-phase asynchronous and synchronous motors up to 90 kW. It features an integrated FM terminal configuration, enabling high-speed pulse train outputs for precise external monitoring of critical operational parameters.

The unit's advanced vector control algorithms ensure optimal torque delivery even at zero speed, making it highly suitable for demanding applications in material handling, fan and pump control, and complex machinery. Built-in serial communication ports allow for straightforward integration into existing PLC and DCS network architectures without requiring auxiliary adapters.

Features

• Advanced Real Sensorless Vector Control (RSVC) and Vector Control modes for precise speed and torque regulation.
• Integrated FM (frequency modulation) control terminal for pulse train monitoring of drive status.
• Robust overload capacity designed to handle extreme load fluctuations in heavy-duty cycles.
• Built-in RS-485, RS-422, and RS-232 communication interfaces as standard.
• Comprehensive diagnostic functions and lifetime monitoring for cooling fans and internal capacitors.

Applications

• Municipal and industrial water treatment pumps and aeration blowers.
• High-capacity material handling conveyors, cranes, and hoisting machinery.
• Extruders, mixers, and rotary kilns in chemical and raw material processing.
• Industrial HVAC compressor systems and ventilation arrays.

Technical Specifications

Installation Guidelines

To ensure optimal cooling performance and long-term reliability, mount the drive vertically on a flat, non-combustible surface. Maintain a minimum clearance of 100 mm above and below the unit, and 50 mm on both sides to allow adequate airflow. Verify that the ambient operating environment remains between -10 and 50 degC and is free from conductive dust, corrosive gases, and excessive moisture. Ensure a dedicated, low-impedance protective earth (PE) ground connection is established prior to energizing the main power circuits.

Compliance and Certifications

• CE marked for low-voltage and EMC directives
• UL and cUL Listed
• RoHS Compliant (6/6 substances)