FR-A840-5.5K-1-26 MITSUBISHI Variable Frequency Inverter 0.72/Step 7.5 / 11

FR-A840-5.5K-1-26 MITSUBISHI Variable Frequency Inverter 0.72/Step 7.5 / 11

FR-A840-5.5K-1-26  Description

FR-A840-5.5K-1-26  Key Features

• Multi-control Modes: Supports sensorless vector control, advanced magnetic flux vector control, V/F control, and PM sensorless vector control for versatile torque and speed regulation.
• Wide Frequency Range: Output frequency adjustable from 0.2–590 Hz to match diverse process speed requirements.
• High Overload Capacity: ND (Normal Duty) 150% for 60s / 200% for 3s; HD (Heavy Duty) 200% for 60s / 250% for 3s (inverse-time characteristics).
• Built-in Communication: RS-485 port supporting Modbus RTU and Mitsubishi protocols; optional fieldbus modules for seamless networking.
• Comprehensive Protection: Overcurrent, overvoltage, undervoltage, overload, overheat, and phase loss protection ensure safe operation.
• Flexible I/O: Multiple digital/analog inputs/outputs for custom control logic and status monitoring.
• Efficient Cooling: Forced air cooling for stable performance in harsh industrial environments.
• User-friendly: Intuitive operation panel (FR-DU08/FR-PU07), auto-tuning, and easy parameter setup via software.

FR-A840-5.5K-1-26  Materials & Applications

Materials

• Housing: High-strength flame-retardant engineering plastic (UL94 V-0) for durability and safety.
• Internal Components: Industrial-grade IGBTs, microprocessors, and optocouplers for high reliability.
• PCB: FR-4 glass epoxy circuit board with anti-corrosion coating (per "-26" option) to resist moisture and dust.
• Terminals: Nickel-plated copper screw terminals for secure wiring and low contact resistance.
• Heat Sink: Extruded aluminum heat sink with forced air cooling for efficient heat dissipation.

Typical Applications

• Conveyor Systems & Material Handling: Smooth speed control for belt conveyors, hoists, and packaging lines.
• Pumps & Fans: Energy-saving variable speed control for water supply, HVAC, and ventilation systems.
• Machine Tools & Presses: High-torque precision control for lathes, milling machines, and stamping equipment.
• Textile & Printing Machinery: Stable speed regulation for yarn winding, printing, and slitting operations.
• Food & Beverage Processing: Hygienic-grade control for mixers, fillers, and sorting systems.
• Winders/Unwinders: Tension control for film, paper, and metal strip processing lines.

FR-A840-5.5K-1-26  Important Parameters