Product Overview

The Danfoss 134F2979 (FC-360H7K5T4E20H2BXCDXXSXXXXAXBX) is a robust VLT AutomationDrive tailored for demanding industrial motor control applications. This model is engineered with a high-overload rating, providing the necessary torque capacity for applications characterized by dynamic load changes, such as industrial conveyors, mixers, and processing machinery. By enabling precise speed and torque regulation, the 134F2979 optimizes energy consumption and minimizes mechanical stress on connected assets, which is essential for maintaining operational efficiency and reducing downtime in critical manufacturing workflows.

Technical Configuration

The 134F2979 is a modular unit within the FC-360 series, designed for industrial settings that prioritize durability and integration flexibility.

• Hardware Architecture: Rated for 7.5 kW (10 HP) output, the drive supports three-phase 380 - 480 VAC supply inputs. It is housed in an IP20-rated chassis, intended for installation within standard, ventilated electrical control panels.
• Operational Versatility: This drive features an integrated brake chopper (B), which allows for the effective dissipation of regenerative energy during rapid deceleration—crucial for high-inertia loads. It also includes the Loadsharing (D) option, permitting energy distribution across a shared DC bus to improve total system efficiency.
• Environmental Protection: The internal circuitry features conformal coating (C), which provides enhanced resistance against dust, moisture, and corrosive atmospheric contaminants found in industrial production environments.
• EMC Compliance: The unit comes equipped with a Class A2 RFI filter (H2), ensuring reliable operation within industrial networks by suppressing electromagnetic interference.

Technical Specifications

FAQs

Why is the "High Overload" (H) rating important for my application?

A high-overload rating means the drive can withstand higher current peaks during the acceleration and start-up phases of a process. This is vital for machinery that requires significant breakaway torque to begin operation under full load conditions.

Can this unit be operated without an LCP (Local Control Panel)?

Yes, this specific part number (X) is supplied without an LCP or blind cover. It is designed to be configured and operated via external control signals or a fieldbus network, though an optional snap-on LCP can be added if local manual interface is needed later.

How does the Loadsharing (D) option function?

The Loadsharing option allows multiple drives to be interconnected on a common DC bus. When one motor acts as a generator (during braking), the excess energy is passed through the DC bus to assist other drives that are in a motoring state, thereby reducing the power drawn from the mains and minimizing heat loss.

Engineering Guidelines and Best Practices

• Thermal Management: Despite its efficiency, the 7.5 kW power level generates heat that must be dissipated. Ensure a minimum vertical clearance of 100 - 150 mm above and below the unit. Periodically vacuum or use dry, low-pressure air to clean the heatsink fins, as dust accumulation significantly reduces thermal performance.
• Shielding Requirements: Even with the integrated H2 RFI filter, you must use shielded motor cables. Terminate the shield at both the drive housing and the motor terminal box using 360-degree conductive clamps to provide a high-frequency ground path, which is critical for minimizing EMI.
• Wiring Integrity: Ensure all control wiring is separated from high-voltage power lines to prevent signal noise. Use stranded wire with proper ferrules for power connections to ensure the terminals can withstand potential thermal expansion and vibration during continuous machine operation.