Danfoss FC111P15KT4 VLT HVAC Basic Drive

Product Overview

The Danfoss FC111P15KT4 is a dedicated VLT HVAC Basic Drive engineered for cost-effective, energy-efficient control of fans and pumps in commercial and light-industrial building automation. Delivering a typical shaft output of 15.0 kW (20.0 HP), this drive is optimized for HVAC applications that require reliability and ease of use without the complexity of advanced automation drives. Its streamlined design reduces installation time and minimizes energy waste, making it an ideal solution for facility upgrades and new building HVAC system deployments.

Technical Configuration

The FC 111 Basic Drive series is purpose-built for "plug-and-play" functionality, balancing essential HVAC features with high-efficiency performance.

• High Efficiency: The drive achieves an efficiency rating of up to 98%, significantly reducing heat generation and operational power costs compared to traditional damping or throttling methods used in HVAC systems.
• Thermal Management: With an estimated power loss of only 379 W (typical) at full load, the unit operates coolly, ensuring component longevity. It is rated for operation in ambient temperatures up to 50°C, providing the flexibility needed for mechanical room installations.
• Robust Output: The unit provides stable output current across wide voltage ranges (380 - 480 V), ensuring consistent performance even in regions with minor power grid fluctuations.

Technical Specifications

FAQs

What is the benefit of the HVAC "Basic" series compared to the HVAC "Drive" (FC 102)?

The Basic drive (FC 111) is optimized for applications where you need core HVAC functionality—such as PID control and fan/pump optimization—at a lower price point. It omits the highly specialized fieldbus options and advanced motion features of the FC 102, making it the perfect choice for simpler, budget-conscious HVAC projects.

Does this drive require special de-rating when used at 50°C?

Yes. As shown in the technical specifications, the continuous output current drops from 31.0 A (at 40°C) to 28.0 A (at 50°C) for the 380 - 440 V range. Always ensure your motor's full-load amperage (FLA) remains below the continuous current rating corresponding to your maximum expected ambient temperature.

Is this model suitable for installation in a standard cabinet?

The IP20 rating makes it suitable for installation inside an electrical control panel. Ensure the cabinet has adequate ventilation to exhaust the ~379 W of heat generated by the drive during full-load operation.

Engineering Guidelines and Best Practices

• Cabling: The terminals support cable sizes up to 16 mm² (6 AWG). Ensure that cables are properly lugged and torqued according to the installation manual to prevent electrical resistance and hot spots at the connection points.
• Grounding: Always establish a solid ground connection between the drive chassis and the cabinet’s main ground bus. This is essential for safety and to prevent electrical noise from causing faults in the drive’s control circuitry.
• Preventative Maintenance: While the drive is designed for low maintenance, periodically inspect the heatsink airflow path. If dust or debris accumulates, use compressed air to clear the fins; a clean heatsink is the most effective way to ensure the drive achieves its intended service life.