DANFOSS FC-101P22KT4E20H4XXCXXXSXXXXAXBXCXXXXDX 22kW 480V Three Phase HVAC Inverter

The DANFOSS FC-101P22KT4E20H4XXCXXXSXXXXAXBXCXXXXDX 22kW 480V Three Phase HVAC Inverter is engineered for robust and efficient operation in critical building systems. This VLT HVAC Basic Drive FC 101 model, with its 22kW power rating and 480V three-phase input, offers advanced control for fans, pumps, and compressors. Key advantages include integrated harmonic mitigation, substantial energy savings of up to 50%, and a compact, user-friendly design that simplifies installation and commissioning. Its UL LZGH2 certification allows for use with A2L refrigerants in HVAC/R systems, enhancing its application versatility. The drive's Automatic Energy Optimizer ensures immediate energy savings upon activation, contributing to the lowest cost of ownership for dedicated ventilation, heating, and refrigeration applications.

Product Specifications

| Feature                  | Specification                                                                    |

| :----------------------- | :------------------------------------------------------------------------------- |

| Model                    | DANFOSS FC-101P22KT4E20H4XXCXXXSXXXXAXBXCXXXXDX                                   |

| Power Rating             | 22 kW / 30 HP                                                                    |

| Supply Voltage           | 380–480 VAC, Three Phase                                                         |

| Output Current           | 42.5 A                                                                           |

| Output Frequency         | 0–400 Hz                                                                         |

| Enclosure Rating         | IP20 (Chassis)                                                          |

| RFI Class                | A1 (C2)                                                                |

| Motor Control            | Induction and Permanent-Magnet (PM) Motors                                       |

| Energy Savings           | Up to 50%                                                                        |

| Harmonic Mitigation      | Integrated DC coils                                                              |

| Operating Temperature    | Max. ambient temp. up to 50° C (with specific cooling considerations) |

| Certifications           | UL LZGH2 (UL60335-2-40, UL60335-2-89)                                 |

| Control Panel            | Optional LCP 32 with 8-language display                                          |

| Communication            | Standard built-in: BACnet mstp, FC Protocol, N2 Metasys, FLN Apogee, Modbus RTU |

| Input Terminals          | 4 Programmable Digital Inputs, 2 Analog Inputs                                   |

| Output Terminals         | 2 Programmable Analog Outputs, 2 Programmable Relay Outputs                      |

Core Features & Market Positioning

The DANFOSS FC-101P22KT4E20H4XXCXXXSXXXXAXBXCXXXXDX stands out in the HVAC drive market due to its specialized design for ventilation, heating, and refrigeration applications, aiming for the lowest cost of ownership. Its core strength lies in its integrated features that reduce initial investment costs. For instance, built-in harmonic mitigation, through integrated DC coils, negates the need for external, costly components. This drive is positioned as a user-friendly, compact, and robust solution, offering unparalleled uptime and simplified commissioning and operation. The Automatic Energy Optimizer is a key differentiator, providing immediate energy savings of 3-5% from initial startup. Furthermore, its UL certification for use with A2L refrigerants broadens its applicability in modern HVAC/R systems.

Key Application Scenarios

This 22kW, 480V three-phase inverter is ideally suited for demanding HVAC applications. Its robust design and specialized features make it a prime choice for controlling fans and pumps in Air Handling Units (AHUs), ensuring precise airflow and water pressure management. The drive's ability to manage induction and permanent-magnet motors efficiently extends its use to various compressor applications within commercial and industrial buildings. It is particularly valuable in environments requiring consistent temperature and humidity control, such as data centers, hospitals, and large commercial complexes, where energy efficiency and operational reliability are paramount. The "Essential Services Mode" ensures continuous operation during critical conditions or emergencies, a crucial feature for life-safety systems.

Practical System Integration Guidance

Integrating the DANFOSS FC-101P22KT4E20H4XXCXXXSXXXXAXBXCXXXXDX into existing systems is streamlined due to its user-friendly design and comprehensive documentation. Wiring and electrical connections are facilitated by clearly marked terminals inside the casing, including mains input (L1, L2, L3), motor output (U, V, W), and control terminals for digital/analog I/O. It is imperative to follow local electrical regulations and safety standards during installation. For initial setup, the drive features a Quick Menu and a start-up wizard to guide users through basic parameter configuration. Advanced configuration, including control logic and motor parameters, can be managed via the Local Control Panel (LCP) or through software tools like the VLT® Motion Control Tool MCT 10. The drive supports common HVAC protocols for Building Management System (BMS) connectivity, including BACnet mstp, Modbus RTU, and others, simplifying integration with central control systems. It is also compatible with permanent-magnet motors, offering flexibility in motor selection.

Operation and Risk Mitigation

Safe operation of the DANFOSS FC-101P22KT4E20H4XXCXXXSXXXXAXBXCXXXXDX begins with ensuring that installation, start-up, and maintenance are performed by qualified personnel. High voltage poses a significant risk; therefore, always disconnect AC mains power and wait for capacitors to discharge fully (up to 15 minutes for certain models/power ranges) before performing any service. Common fault codes include "Disconnect Fault" (check analog input connections), "No Motor Connected" (verify motor connections), "Main Supply Phase Loss" (check power supply), "Overcurrent" (verify motor load and settings), and "Earth Fault" (inspect motor cable and grounding). The drive's built-in protection features, such as motor thermal protection, help mitigate risks. Setting parameter 1-90 to "ETR trip" enables motor overload protection. The "Fire Override Mode" is a critical safety feature, ensuring continued fan operation during emergencies to maintain life safety.

Scalability & Long-Term Value

The VLT® HVAC Basic Drive FC 101 is designed for longevity and integration within evolving building automation systems. While it excels in dedicated HVAC applications, its compatibility with various motor technologies, including both induction and permanent-magnet motors, offers flexibility for future system upgrades or motor replacements. The drive supports multiple standard HVAC protocols for BMS connectivity, such as BACnet mstp and Modbus RTU, allowing seamless integration with existing or future control platforms. Danfoss also provides tools like the VLT® Motion Control Tool MCT 10 for parameter management and software updates, ensuring the drive can be maintained and optimized over its lifecycle. Its robust construction and emphasis on energy efficiency contribute to a lower total cost of ownership, making it a sound long-term investment for building operators seeking reliable and sustainable HVAC control.

Frequently Asked Questions (FAQs)

How can I reset alarms on the DANFOSS FC-101P22KT4E20H4XXCXXXSXXXXAXBXCXXXXDX?

Alarms can be reset using the Local Control Panel (LCP) by pressing the "[Off/Reset]" key. This action is standard for clearing active fault conditions after the underlying issue has been addressed.

Ensure the specific fault code is identified and resolved before attempting a reset. Refer to the drive's manual for detailed troubleshooting steps associated with each fault code.

Properly addressing the root cause prevents immediate recurrence of the alarm, ensuring system stability and preventing potential damage.

What are the main advantages of the DANFOSS FC-101P22KT4E20H4XXCXXXSXXXXAXBXCXXXXDX over other VFDs?

This drive offers integrated harmonic mitigation, reducing external component needs. Its Automatic Energy Optimizer provides immediate savings, and it's UL certified for A2L refrigerants.

It's specifically optimized for HVAC applications, providing features like Essential Services Mode and simplified commissioning, leading to lower total cost of ownership.

The drive's robust design and user-friendly interface contribute to increased uptime and reduced operational expenses over its lifespan.

Can the DANFOSS FC-101P22KT4E20H4XXCXXXSXXXXAXBXCXXXXDX control Permanent Magnet (PM) motors?

Yes, the DANFOSS FC-101P22KT4E20H4XXCXXXSXXXXAXBXCXXXXDX is designed to efficiently control both induction motors and permanent-magnet (PM) motors. This capability enhances its versatility across various HVAC applications.

This dual-motor control compatibility ensures that users can leverage the benefits of PM motors, such as higher efficiency and power density, within their HVAC systems.

The drive's VVC+ PM control strategy facilitates seamless integration and operation with PM motors, providing optimal performance and energy savings.

What is the typical energy saving achieved with the DANFOSS FC-101P22KT4E20H4XXCXXXSXXXXAXBXCXXXXDX?

This drive can achieve energy savings of up to 50% in HVAC applications. The Automatic Energy Optimizer contributes an immediate 3-5% saving from startup.

These savings are realized through precise motor speed control, matching power consumption to actual demand rather than running at full speed constantly.

By optimizing energy usage, the drive significantly reduces operating costs and contributes to a lower carbon footprint for the building.

How do I wire the DANFOSS FC-101P22KT4E20H4XXCXXXSXXXXAXBXCXXXXDX?

Refer to the internal markings on the drive casing for mains input (L1, L2, L3) and motor output (U, V, W) terminals. Follow all local electrical codes and safety standards.

Control terminals for digital and analog inputs/outputs are also clearly marked. Always ensure the drive is powered off and capacitors are discharged before making connections.

For complex setups or if unsure, consult an experienced technician or the official Danfoss installation guides for precise wiring diagrams and best practices.

What are the key parameters for initial setup of the DANFOSS FC-101P22KT4E20H4XXCXXXSXXXXAXBXCXXXXDX?

Begin with basic motor parameters from the motor nameplate, such as kW, voltage, frequency, and RPM. Utilize the Quick Menu or start-up wizard for guided configuration.

Key settings include motor control principle (U/f or VVC+), acceleration/deceleration times, and input/output terminal assignments for control signals.

Confirm correct motor rotation direction and smooth operation during the initial test runs, making fine-tuning adjustments as needed.

What is the IP rating of the DANFOSS FC-101P22KT4E20H4XXCXXXSXXXXAXBXCXXXXDX?

The DANFOSS FC-101P22KT4E20H4XXCXXXSXXXXAXBXCXXXXDX has an IP20 chassis rating. This indicates protection against solid objects greater than 12.5 mm, but it is not protected against water ingress.

For environments requiring higher protection against dust and water, external enclosures or specific mounting configurations may be necessary. Always consult the product's detailed specifications for exact environmental ratings.

While the chassis is IP20, some sources mention an IP54 rating for the overall drive in specific configurations, so it's essential to verify the exact model's rating for the intended application.

How does the built-in harmonic mitigation work in the DANFOSS FC-101P22KT4E20H4XXCXXXSXXXXAXBXCXXXXDX?

The drive utilizes integrated DC coils to reduce harmonics generated by the variable frequency drive's operation. This internal component eliminates the need for external harmonic filters, saving space and cost.

By minimizing harmonic distortion on the power supply line, the drive improves power quality and reduces interference with other electrical equipment.

This feature contributes to the drive's compact design and simplifies installation, making it a more cost-effective solution for HVAC applications.

What is the "Essential Services Mode" on the DANFOSS FC-101P22KT4E20H4XXCXXXSXXXXAXBXCXXXXDX?

Essential Services Mode ensures the drive continues to operate critical functions, such as fans, even if internal protection mechanisms would normally trigger a shutdown. This is vital for safety applications.

This mode is designed to maintain operation during emergencies, like fire events, to support ventilation and smoke extraction systems, prioritizing safety over equipment protection.

It overrides self-protection features to guarantee continuous operation for life-safety systems, ensuring critical airflow is maintained when it's most needed.

How can I access the troubleshooting guide or fault codes for this drive?

Troubleshooting information, including common fault codes and their corresponding solutions, is available in the VLT HVAC Basic Drive FC 101 Programming Guide and Design Guide. These manuals can typically be found on the Danfoss website or were provided with the product.

Specific fault codes are displayed on the Local Control Panel (LCP) or can be accessed via connected BMS or software tools. Refer to the manual for a comprehensive list and diagnostic procedures for each code.

Common troubleshooting steps involve checking power supply stability, motor connections, analog input signals, and ensuring parameter settings are appropriate for the connected motor and application.