FC-051PK18S2E20H3XXCXXXSXXX Danfoss VLT Micro Drive 0.18kW VFD

Product Overview

The FC-051PK18S2E20H3XXCXXXSXXX (FC-051PK18S2E20H3XXCXXXSXXX) is an ultra-compact frequency converter from the Danfoss VLT® Micro Drive FC 051 series, specifically engineered for low-power applications at 0.18 kW (0.25 hp). This single-phase 200-240 VAC drive is designed for high-density integration in small machinery, providing precise motor control with a minimal footprint. Despite its small M1 frame size, the FC-051PK18 includes professional features like Coated PCBs for environmental protection and an integrated H3 RFI filter (Class A1/B) to ensure electromagnetic compatibility in commercial and industrial settings. It is the ideal solution for controlling small fans, pumps, and conveyor belts where reliability and energy efficiency are required in a chassis-mount format.

Suffix Breakdown

The model code FC-051PK18S2E20H3XXCXXXSXXX specifies a precise hardware configuration tailored for small-scale automation:

• FC-051: Part of the VLT® Micro Drive series.

• PK18: Designates a power rating of 0.18 kW (0.25 hp).

• S2: Single-phase input for 200-240 VAC mains voltage.

• E20: IP20 / Chassis enclosure rating, requiring panel mounting.

• H3: Integrated RFI Filter Class A1/B (Category C1) for maximum noise suppression.

• X (Brake): No integrated brake chopper.

• X (LCP): Supplied without a Local Control Panel (must be ordered separately).

• C: Conformal Coating on PCBs for resistance against dust and moisture.

• SXXX: Equipped with the latest standard software release.

• M1: The most compact frame size in the FC 051 series.

Technical Specifications

Technical FAQs

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

The FC-051PK18 requires an external Local Control Panel (LCP 11 or LCP 12) for manual parameter adjustment. Alternatively, you can use the Danfoss MCT 10 setup software via a PC interface. This "no LCP" version is cost-effective for high-volume OEMs who pre-program drives before shipment.

Can this single-phase drive control a standard three-phase motor?

Yes. The FC-051PK18 takes single-phase 230V input and converts it to a pulse-width modulated (PWM) three-phase 230V output. This allows you to run industrial three-phase motors (wired in Delta for 230V) in locations where only single-phase power is available.

What environments is the "Coated PCB" version suitable for?

The "C" suffix indicates that the internal circuit boards are coated to protect against humidity, salt air, and conductive dust. This makes the drive suitable for use in environments like commercial kitchens, greenhouses, or small-scale industrial workshops where airborne contaminants are present.

Engineering & Installation Guide

• M1 Frame Mounting: The M1 frame is designed for DIN-rail or backplate mounting. To ensure proper thermal management, maintain at least 100 mm of clearance above and below the unit. Side-by-side mounting is supported without derating, allowing for maximum cabinet space utilization.

• EMI/RFI Grounding: To achieve the benefits of the H3 Class A1/B filter, you must use shielded motor cables. The shield should be connected to the metal decoupling plate of the drive using the provided 360-degree clamps. This is essential for preventing interference with nearby sensors or household electronics.

• Commissioning for Low Power: When configuring the 0.18 kW drive, ensure the Motor Current (Parameter 1-24) is set accurately. Because the current is very low, even small deviations can lead to poor torque performance or false "No Motor" alarms. Perform an Automatic Motor Adaptation (AMA) for the best results.