131L9862 Danfoss VLT HVAC Basic Drive FC-101 0.75kW VFD

Product Overview

The 131L9862 (131L9862) is a compact and efficient variable frequency drive from the Danfoss VLT® HVAC Basic Drive FC-101 series. Specifically engineered for 0.75 kW (1.0 HP) motor control, this drive is optimized for basic HVAC applications such as small centrifugal pumps and fans. By modulating motor speed to match actual demand, the 131L9862 reduces energy consumption and mechanical wear on building systems. Its IP20 enclosure is designed for space-saving cabinet installation, while the integrated H4 RFI filter ensures compliance with industrial electromagnetic standards (Class A1/C2). This drive offers a streamlined, reliable solution for modern building automation and climate control infrastructures.

Suffix Breakdown

The model code FC-101PK75T4E20H4 specifies the precise configuration for this 0.75kW unit:

• FC-101: Part of the VLT® HVAC Basic Drive series.

• PK75: Indicates a power rating of 0.75 kW (1.0 HP).

• T4: Three-phase input for 380 - 480 VAC mains voltage.

• E20: IP20 / Chassis enclosure rating, designed for installation in control panels.

• H4: Integrated RFI Filter Class A1 (Category C2) for effective noise suppression.

Technical Specifications

Technical FAQs

What are the standard communication protocols for the FC-101?

The 131L9862 comes equipped with built-in protocols specifically for the HVAC industry, including BACnet MS/TP, Modbus RTU, and Danfoss FC Protocol. This allows for direct integration into a Building Management System (BMS) for remote monitoring and control.

Does the IP20 rating allow for mounting outside of a cabinet?

No. The IP20 (E20) rating indicates the drive is an "open type" component. It must be installed within a protective enclosure or control panel to prevent accidental contact with live parts and to protect the electronics from dust and moisture.

Is an external display required for commissioning?

The FC-101 series usually requires an LCP (Local Control Panel) for local parameter adjustment. However, the drive can also be configured using a PC via the built-in RS485 port using the free Danfoss VLT® Motion Control Tool MCT 10.

Engineering & Installation Guide

• Space Management: The 131L9862 supports side-by-side mounting, which is ideal for high-density control panels. To ensure adequate cooling, maintain a minimum of 100 mm of vertical clearance above and below the drive to allow for natural convection through the heat sink.

• EMC Best Practices: To utilize the integrated H4 RFI filter effectively, you must use shielded (screened) motor cables. Ensure the cable shield is connected to the drive's metal decoupling plate using a 360-degree clamp to provide a low-impedance path for high-frequency noise.

• Motor Protection: For optimal performance, perform an Automatic Motor Adaptation (AMA) during commissioning. This allows the drive to measure the motor's actual electrical characteristics, optimizing the VVC+ control algorithm for maximum torque and energy efficiency.