FR-F840-00170-2-60 | Mitsubishi Electric | Variateur de fréquence

Description

Regulating system dynamics with exceptional efficiency, the Mitsubishi Electric FR-F840-00170-2-60 is a dedicated variable frequency drive engineered primarily for pump, fan, and compressor operations. This FR-F800 Series controller provides precise speed regulation over three-phase AC motors, featuring dual overload ratings to optimize physical sizing and thermal margins. By utilizing advanced energy-saving algorithms, the drive dynamically adjusts excitation current in response to load fluctuations, maximizing operational efficiency under real-time conditions. The robust IP20 enclosure is designed for standardized panel mounting within industrial environments, incorporating integrated PID control loops to streamline system architectures without requiring external controllers.

Features

• Dual Rating Modes: Features Super Light Duty (SLD) and Light Duty (LD) ratings to align precisely with specific torque applications.
• Optimum Excitation Control: Automatically calculates and applies the ideal magnetic flux matching the load, minimizing thermal losses.
• Built-In PID Controller: Allows direct process loop management for flow, pressure, or temperature regulation without PLC intervention.
• Enhanced Safety Integration: Equipped with safety stop functions complying with global machinery protection requirements.
• Integrated USB Port: Facilitates direct connection to engineering software for diagnostic plotting and parameter backups.

Applications

• Fluid Management: Municipal and industrial water pump control, including booster systems and dry-run protection.
• HVAC Systems: Intake, exhaust, and recirculation air-handling fans in commercial or industrial facilities.
• Compressor Control: Dynamic speed control for positive-displacement and centrifugal air compression units.

Technical Specifications Table

Connections and Interfaces

Empirical Engineering Insights

Alternative Models & Compatibility

This unit directly succeeds legacy FR-F740 models. When transitioning, verify the operational parameter logic because terminal assignments match, but software parameters (especially those referencing motor constants and auto-tuning) require translation using FR Configurator2. Parameter conversion utilities within the software automate this migration but necessitate validation prior to line commissioning.

Application Pitfalls & Engineering Notes

When sizing for high-altitude operations, derate current output by 1% for every 100 meters above 1000 meters up to a maximum of 2500 meters. For applications involving high-inertia loads like large extraction fans, integrate an external braking resistor to prevent overvoltage trips (E.OV3) during deceleration phases, especially when rapid deceleration cycles are scheduled.

Commissioning & Wiring Tips

Ensure the control signal wiring is completely segregated from the primary motor and input power cables. Use shielded twisted-pair (STP) wiring for analog speed references (terminals 2 and 5) and tie the shield exclusively to terminal 5 on the drive side to eliminate ground loops. In noisy electromagnetic environments, installing a zero-phase reactor on the input line significantly mitigates EMI issues.

Installation Guidelines