FC-102P55KT4E66H2XGXXXXSXXXXAXBXCXXXXDX | Danfoss | VLT HVAC Drive 55 kW

Product Overview

The FC-102P55KT4E66H2XGXXXXSXXXXAXBXCXXXXDX (131H1478) is a high-capacity VLT® HVAC Drive FC 102, specifically engineered to provide maximum energy efficiency and minimized lifecycle costs in large-scale building automation systems. Delivering 55 kW (75 HP) of power, this drive is the primary choice for driving massive centrifugal fans, pumps, and chillers in commercial skyscrapers, hospitals, and industrial HVAC plants. It features a rugged IP66 enclosure, allowing for direct installation in demanding environments without requiring an additional protective cabinet. Equipped with a Graphical LCP 102 display and integrated RFI Class A2 filtering, the FC-102P55KT4E66H2XGXXXXSXXXXAXBXCXXXXDX ensures seamless operational control while maintaining strict electromagnetic compatibility in noise-sensitive professional buildings.

Suffix Breakdown

• FC-102: VLT® HVAC Drive Advanced Version – optimized for fan and pump control (PID loops, flow compensation).

• P55K: Power rating of 55 kW / 75 HP.

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

• E66: IP66 / NEMA 4X Enclosure – dust-tight and protected against high-pressure water jets.

• H2: Integrated RFI Filter Class A2, meeting EN/IEC 61800-3 standards for industrial environments.

• G: Graphical Local Control Panel (LCP-102) included for advanced diagnostic and setup visuals.

• SXXX: Standard software release with native HVAC application smart logic.

• AX/BX/CX/DX: Standard configuration with no additional fieldbus, application, motion control, or DC input options installed.

Technical Specifications

Technical FAQs

What is the benefit of the IP66/E66 enclosure rating?

The IP66 rating means the drive is completely dust-tight and can withstand high-pressure water jets from any direction. This makes it ideal for installation in rooftops, cooling tower areas, or mechanical rooms where wash-down procedures or high humidity are common, eliminating the cost of an external enclosure.

Does this drive support BMS integration?

Yes. The FC 102 series comes standard with embedded HVAC protocols such as Modbus RTU. While this specific model (AX) does not have optional fieldbus cards like BACnet/IP or Profinet pre-installed, these can often be added as modular upgrades if high-level network integration is required.

Can I use this drive for a constant torque application like a hoist?

The FC 102 is optimized for variable torque applications (fans and pumps). For high-inertia or constant torque applications like hoists or heavy mixers, the VLT® AutomationDrive FC 302 would be the more appropriate technical choice.

What does the "H2" RFI filter protect against?

The H2 filter (Class A2) reduces electromagnetic interference conducted through the power lines. This prevents the drive from interfering with other electronic equipment in the building, such as sensors or communication systems, adhering to EN 61800-3 standards.

Engineering & Installation Guide

• Mounting and Heat Management: At 55 kW, the drive generates significant heat during operation. Even with its IP66 rating, ensure sufficient clearance (minimum 200 mm above and below) to allow the external heatsink to dissipate heat effectively. Avoid mounting the drive in direct sunlight, which can cause internal temperatures to exceed the 45 deg C threshold.

• Cable Shielding and Grounding: To maintain the effectiveness of the Class A2 RFI filter, motor cables must be shielded. The shield should be connected to the metal cabinet or the drive’s grounding plate using the provided EMC clamps. Ensure a 360-degree HF (High Frequency) ground connection to minimize radiated emissions.

• LCP Programming: Utilize the Graphical LCP 102 to access the "SmartStart" wizard. For HVAC applications, specifically configure the "Sleep Mode" and "Dry Pump Protection" parameters; these functions are critical for preventing motor wear during low-demand periods and protecting pump seals from damage.