Get even more drive in your HVAC – with rock-bottom lifecycle costs in any climate
More than ever, the extreme climates, inaccessible machine rooms and isolated outposts of our planet need the best process control there is for their HVAC installations. Your everyday critical functions and costly systems need it too, as they face ever-increasing competition and efficiency demands. Always with high performance in mind, the enhanced VLT® HVAC Drive gives you more room to maneuver. It confronts the issues and gives you rock-solid reliability. With rock-bottom lifecycle costs too.
The AHRI Certified™ VLT® HVAC Drive is designed to bring optimized process control to all heating, ventilation and air conditioning (HVAC) applications. Easy to use and with built-in intelligence, the drive is fast and cost-effective to commission. It features a wide range of functions specifically developed for use with pumps, fans, and compressors to save energy, meet environmental regulations and reduce costs in modern buildings.
The compact design of the VLT® HVAC Drive and its efficient heat management system mean it is ideal for applications where drive space is restricted. A selection of safety features, such as Safe Torque Off and Safe Maximum Speed, protect both applications and their operators.
Maximum uptime is ensured as this robust drive offers problem-free operation in harsh environments. Enclosures are available up to IP 66 (depending on the model). And a special coating is available as an option to provide extra protection for circuit boards. Integrated DC chokes and RFI filters safeguard installations by minimizing harmonic distortion and electromagnetic interference.
Supply voltages and power range
- 3 x 200-240 V...1.1-45 kW
- 3 x 380-480 V...1.1-1000 kW
- 3 x 525-600 V...1.1-90 kW
- 3 x 525-690 V...1.1-1400 kW
Low harmonic drive
- 3 x 380-480 V...160-710 kW
12-pulse drive
- 3 x 380-500 V...315-1000 kW
- 3 x 525-690 V...450-1400 kW
Features and benefits
There’s no need for external cooling or oversizing as the maximum ambient temperature is 50°C without derating
PLC capacity is often unnecessary thanks to the Smart Logic Controller
A low initial investment and easy upgrades are possible thanks to the modular concept with a wide range of options
The need for external control and conversion equipment is avoided due to integrated pump, fan and compressor functionality
5–15% energy is saved as a result of the Automatic Energy Optimization function
Less gateway solutions are needed thanks to a wide range of HVAC protocols for building management system controller connectivity
Avoid unplanned downtime with condition based monitoring
Unplanned downtime of HVAC systems can be catastrophic for essential infrastructure and those who depend on it today. Danfoss technologies empower frontline operators - both on site and remote - to predict unforeseen early failures thereby better planning for maintenance and maximizing uptime. Explore how intelligent VLT® drives solve potentially critical problems in HVAC applications.
New application paper: VLT HVAC Drive FC 102 with Fire Emergency Mode
The FC 102 is not only the most efficient of HVAC drives. It also saves lives and protects inventory, by ensuring the most effective smoke control in the event of a fire. With this new application paper, we aim to win more projects by informing customers of special FC 102 features which ensure exceptional performance, when safety is a critical factor.
Documents
HVAC Selection Guide
Find all the information you need regarding the HVAC Drive family
VLT® HVAC Drive literature
Related applications
Pumps, fans, compressors.
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Variable speed control with AC drives enables you to reduce energy consumption by running compressor applications at a lower speed.
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Variable speed control of a chiller allows you to provide constant pressure regulation while matching the capacity to the actual need based on measurements in the system. Speed control is beneficial when a compressor runs for long periods at partial load. Reduce operational costs by running applications at a lower speed which reduces energy consumption. And reduce installation costs by optimizing the system and the compressor itself.
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With user-friendly interfaces, distributed intelligence and reduced power consumption, Danfoss AC drives optimize the performance of fans.
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With user-friendly interfaces, distributed intelligence and reduced power consumption, Danfoss AC drives optimize the performance of fans.
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Protect your pump and optimize commercial ventilation and air conditioning performance using AC drives.
Case studies
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USA: With integrated condition monitoring, VLT® HVAC Drive FC 102 optimizes hydronic system uptime to enhance indoor climate at a community healthcare facility in Wisconsin.
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POLAND: The new Danfoss production hall in Grodzisk Mazowiecki has reached carbon-neutrality, thanks to full electrification, energy-saving solutions such as Danfoss drives, and energy from renewable sources.
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DENMARK: Universe Science Park saves 80% on emissions and the power bill for its wind tunnel attraction “Beat the Storm”, with the intelligent VLT® HVAC drive.
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A huge number of Danfoss drives secure comfortable temperatures and cut down energy use inside Chile’s famous Costanera Center.
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DENMARK: Hotel Alsik is proud to be 76% CO2-neutral, with sustainable solutions reflected throughout the entirety of this magnificent hotel – from the energy-efficient solutions in the hotel rooms, the design of the building and the power supply, to the 380 m2 solar cells on the roof.
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Danfoss Drives VFD retrofit project helped the one million square foot Enercare Centre in Toronto, Canada save energy with dramatically improved pump motor efficiency, cut electricity costs, and helped achieve the center's sustainability goals.
Learning
News
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With 60% lower power losses compared to similar filters, Danfoss Advanced Active Filter AAF 007 can rescue your energy budget. Enjoy harmonic mitigation, power factor correction and imbalance compensation, all in one product. This filter is compatible for use with any drive from the entire Danfoss product portfolio.
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The FC 102 is not only the most efficient of HVAC drives. It also saves lives and protects inventory, by ensuring the most effective smoke control in the event of a fire. With this new application paper, we aim to win more projects by informing customers of special FC 102 features which ensure exceptional performance, when safety is a critical factor.
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Tailor your drives to suit your application by unlocking licensed features. Fast plug-and-play activation will let you create the best conditions for your business.
Software
| Type | Software Characteristic | Name | Version | Language | Released | Status | Download | File type |
|---|---|---|---|---|---|---|---|---|
| Software tools | SISTEMA Library for Danfoss Drives | 2.0 | English | 15 Jul, 2025 | Released | 842.2 KB | .zip | |
| System software | Library | VLT® AOI for Rockwell Studio 5000 | 1.00 | English | 17 Dec, 2019 | Released | 7.2 MB | .zip |
| System software | Fieldbus configuration file | VLT® Drives DeviceNet EDS | 01 | English | 31 May, 2021 | Released | 2.2 MB | .zip |
| System software | Fieldbus configuration file | VLT® Drives EtherNet/IP EDS | 02 | English | 27 Jun, 2016 | Released | 59.8 KB | .zip |
| System software | Library | VLT® Drives PROFIBUS PCA Block | 01 | English | 19 Mar, 2008 | Released | 465.8 KB | .zip |
| Software tools | VLT® Energy Box | 2.1.0.1 | English | 27 Sep, 2012 | Released | 15.3 MB | .zip | |
| System software | Library | VLT® EtherNet/IP Add-on Instructions | 01 | English | 27 Sep, 2013 | Released | 443.0 KB | .zip |
| System software | Fieldbus configuration file | VLT® HVAC Drive FC 102 LNS Plug-in | 01 | English | 23 Jun, 2008 | Released | 3.7 MB | .zip |
| System software | Fieldbus configuration file | VLT® HVAC Drive FC 102 LonWorks | 01 | English | 13 Mar, 2009 | Released | 97.2 KB | .zip |
| Software tools | VLT® HVAC Drive Simulator | 05.02 | English | 27 Jun, 2017 | Released | 2.9 MB | .zip | |
| System software | Support file | VLT® HVAC Drive Support File | 7.01 | English | 28 Jan, 2022 | Released | 4.5 MB | .zip |
| System software | Library | VLT® Library for B&R Automation | 1.00 | English | 17 Dec, 2019 | Released | 7.1 MB | .zip |
| System software | Library | VLT® Library for TIA Portal | 1.12 | English | 17 Dec, 2019 | Released | 11.9 MB | .zip |
| System software | Library | VLT® Library for TwinCAT 3 | 1.12 | English | 17 Dec, 2019 | Released | 8.4 MB | .zip |
| System software | Library | VLT® Library for Unity Pro | 1.00 | English | 17 Dec, 2019 | Released | 9.7 MB | .zip |
| System software | Fieldbus configuration file | VLT® MCA101 PROFIBUS GSD | 01 | English | 03 Nov, 2010 | Released | 76.9 KB | .zip |
| System software | Fieldbus configuration file | VLT® MCA120 PROFINET GSDML | 01 | English | 21 Feb, 2018 | Released | 719.2 KB | .zip |
| Software tools | VLT® Motion Control Tool MCT10 | 5.50 | English | 14 Jul, 2022 | Released | 944.1 MB | .zip | |
| Software tools | VLT® Motion Control Tool MCT31 | 2.0.4 | English | 17 Oct, 2017 | Released | 25.2 MB | .zip |
Drawings
Frame Ratings by HP
Contact factory for drives larger than 350HP
Additional mechanical drawings including drawings for Drives with options, electrical drawings and E-Plan files are located below this table under the heading 3D models and drawings.
Frame |
Enclosure |
HP Range |
Base drive dimensions (Inches) |
Mechanical drawing # |
|||||||
NEMA 1 |
NEMA 12 |
208V |
460V |
600V |
Height |
Width |
Depth |
T1 |
T2 |
T3 |
|
A2 |
O | 0.5-3 | 0.5-5 | - | 14.6 | 3.5 | 8.1 | 176U8484 | 176U8485 | 176U5288 | |
A3 |
O | 5 | 7.5-10 | 0.5-10 | 5.1 | ||||||
A5 |
O | 0.5-5 | 0.5-10 | 0.5-10 | 16.5 | 9.5 | 7.9 | 176U5289 | 176U5290 | 176U3833 | |
B1 |
O | O | 7.5 - 15 | 15-25 | 18.9 | 9.5 | 10.3 | 176U8471 | 176U8472 | 176U8473 | |
B2 |
O | O | 20 | 30-40 | 25.6 | 176U8474 | 176U8475 | 176U8476 | |||
C1 |
O | O | 25-40 | 50-75 | 26.8 | 12.1 | 12.2 | 176U8477 | 176U8463 | 176U8479 | |
C2 |
O | O | 50-60 | 100-125 | 30.3 | 14.6 | 13.2 | 176U8480 | 176U8481 | 176U8482 | |
D1 |
O | O | - | 150-200 | 150-250 | 45.6 | 16.5 | 14.7 | 176U8435 | ||
D2 |
O | O | 250-350 | 300-350 | 60.6 | ||||||
D1h |
O | O | - | 150-200 | 150-250 | 35.5 | 12.8 | 14.9 | 177R0490 | 174N8666 | |
D2h |
O | O | 250-350 | 300-350 | 43.6 | 16.5 | 176U8480 | ||||
Tier Code Description
- T1 Drive with disconnect or fused disconnect (All frames). T1 drawings are also valid for stand alone drives frame size A5 and larger.
- T2 Drive with bypass or non-bypass panels with contactor motor selection, reactor or dV/dt filter
- T3 Drive with bypass and non-bypass panels with contactor motor selection, reactor or dV/dt filter
To sort drawings in the 3D models and drawings table below, click on the filter icon to the right of the column title "Type" (shown circled at right):
