Product Overview

The Danfoss 136N8927 (FC-051PK75T4E20HXXXCXXXSXXX) VLT Micro Drive FC 51 is a high-efficiency variable frequency drive engineered for seamless motor speed control in diverse industrial settings. This 0.75 kW (1.0 HP) unit is designed for three-phase 380-480 VAC power systems, providing reliable performance in applications such as centrifugal pumps, conveyor belts, and HVAC fan systems. By utilizing advanced VVC plus (Voltage Vector Control) technology, the 136N8927 ensures precise motor operation, contributing to significant energy savings and decreased mechanical wear, ultimately extending the operational lifespan of connected rotating equipment.

Technical Configuration

The ordering code FC-051PK75T4E20HXXXCXXXSXXX delineates the specific build and functional attributes of this drive:

• FC-051: Identifies the compact VLT Micro Drive FC 51 series.
• PK75: Indicates a power output capacity of 0.75 kW / 1.0 HP.
• T4: Configured for 380-480 VAC three-phase supply.
• E20: IP20 / Chassis design for installation within standard electrical enclosures.
• HX: No internal RFI filter, prioritizing cost-efficiency for non-regulated environments.
• X: No integrated brake chopper; suitable for standard speed control applications.
• C: PCB coating provided for protection against humidity and corrosive atmospheres.
• SXXX: Equipped with the latest standard software release for full compatibility with Danfoss control logic.

Technical Specifications

FAQs

How does the PK75 power rating affect installation requirements compared to smaller models?

While the frame size for the 0.75 kW model remains compact, ensure your input circuit protection (fuses or circuit breakers) is sized specifically for the rated current of this drive to maintain safety compliance.

Does this drive support braking resistor connection?

No, the X-suffix in the braking position confirms this unit does not feature an integrated brake chopper, meaning it is not designed for heavy regenerative braking applications.

Can the drive be configured via a local interface?

This model is delivered without an LCP (Local Control Panel). Configuration is typically performed via the RS-485 port using Danfoss MCT 10 software or by installing a snap-on LCP module separately.

Installation and Operational Guidelines

• Heat Dissipation: Although the drive is small, it generates heat during operation. Maintain at least 100 mm of clearance above and below the unit to allow for convective cooling. If mounting multiple drives side-by-side, ensure the total cabinet cooling capacity accounts for the cumulative heat dissipation.
• Wiring Standards: Use shielded motor cables to prevent electromagnetic noise from impacting other control signals. The cable shield should be properly terminated at the drive's chassis grounding point using a 360-degree metallic clamp to ensure low-impedance high-frequency grounding.
• Environmental Protection: While the PCB is coated, the IP20 enclosure does not protect against conductive dust or liquids. Always install the unit within a clean, dry, and climate-controlled electrical cabinet to ensure the longevity of the power electronics.