Danfoss VLT Micro Drive FC-051P7K5T4E20HXBXCXXXSXXX 136N8935

Product Overview

The 136N8935 (136N8935) is a compact yet powerful VLT Micro Drive FC 51 designed for high-density industrial automation environments. Delivering 7.5 kW (10 HP) of power in a remarkably small footprint, this frequency converter is engineered for side-by-side mounting in control cabinets to save significant panel space. It is particularly effective for controlling conveyor belts, mixers, and fan systems in manufacturing plants and assembly lines. The 136N8935 features Coated PCBs (C) as standard, providing enhanced durability against dust and moisture, ensuring consistent performance and reduced maintenance costs in typical industrial "gray" areas.

Suffix Breakdown

The model code FC-051P7K5T4E20HXBXCXXXSXXX outlines the specific functional parameters of this Micro Drive:

• FC-051: Part of the VLT Micro Drive series, optimized for efficiency and ease of use.

• P7K5: Power rating of 7.5 kW (10 HP), suitable for moderate-to-high torque applications.

• T4: Designed for three-phase mains input ranging from 380 - 480 VAC.

• E20: IP20/Chassis rating, intended for installation within a protected enclosure.

• HX: No integrated RFI filter, ideal for isolated grids or environments where external filtering is already present.

• B: Integrated Brake Chopper, allowing the drive to manage regenerative energy during rapid motor deceleration.

• C: Coated printed circuit boards for protection against environmental contaminants.

Technical Specifications

Technical FAQs

How do I program the drive if it is supplied without an LCP?

The 136N8935 (X version) does not include a Local Control Panel. You can program the drive using an external LCP 11 or LCP 12 accessory, or via a PC connection using the MCT 10 Set-up Software. Once programmed, the LCP can be removed for secure operation.

Is an external brake resistor required for this model?

Because this unit includes a built-in brake chopper (B), it can manage braking energy. However, for applications involving high inertia or frequent stops, you must connect an external brake resistor to the terminals to safely dissipate the heat generated during deceleration.

What are the environmental limitations of the HX (No RFI Filter) version?

The HX version is best suited for industrial environments where electromagnetic interference (EMI) limits are less stringent or where central plant-level filtering is installed. If used in residential or commercial zones, an external RFI filter may be required to meet local EMC regulations.

Engineering & Installation Guide

• Side-by-Side Mounting: The VLT Micro Drive series is designed for "true" side-by-side mounting. You can install multiple units without any horizontal gap, which maximizes cabinet density. However, ensure a minimum of 100 mm vertical clearance above and below each unit to allow for natural convection and forced air cooling.

• Brake Resistor Safety: When connecting an external brake resistor, ensure the wiring is heat-resistant. Place the resistor in a location where its heat dissipation will not affect the drive's air intake or sensitive control wiring. Use a thermal switch to monitor resistor temperature and interlock it with the drive's enable signal.

• Grounding for Non-RFI Models: Since this model lacks an internal RFI filter, proper grounding is even more critical. Use a short, thick, flat braided earth strap for the PE (Protective Earth) connection to provide a low-impedance path for high-frequency noise, protecting adjacent sensors and communication equipment from interference.