Visiting from the United States of America?

Shop with accurate prices and delivery times for your region

Dedicated to HVAC

The VLT drive with features dedicated specifically to HVAC applications

Easy maintenance

Modular design approach makes for easy maintenance and expansion

Save money

Saves money by reducing energy costs and increasing reliability

Many options

Wide range of options allow the drive to grow with your application

Optimised Control for HVAC Applications up to 1.4MW

200/240 VAC

3-phase drives from 1.1kW to 45kW

380/480 VAC

3-phase drives from 1.1kW to 1MW

500/575 VAC

3-phase drives from 1.1kW to 90kW

500/690 VAC

3-phase drives from 1.1kW to 1.4MW

VLT HVAC Drive FC 102

Danfoss HVAC Drive FC 102 Product Overview

The VLT HVAC drives are designed to bring optimised process control to all heating, ventilation and air conditioning applications. With a wide range of functions specifically developed for use with pumps, fans and compressors, the FC 102 is great for saving energy and meeting environmental regulations.

  1. > No need for external cooling - maximum temperature of 50°C without derating
  2. > Built-in Smart Logic Controller often eliminates need for an external PLC
  3. > Modular design makes it easy to upgrade and add options
  4. > Integrated pump, fan and compressor functionality
  5. > Automatic Energy Optimisation functions saves 5-15% of energy

Accessories & Software

Communication Modules

Communication modules

I/O Modules

I/O modules



VLT Software


View all >>

VLT HVAC Drive Dimensions

Frame Size A2 A3 A4 A5 B1 B2 B3 B4 C1 C2 C3 C4
Height (mm) 268 (IP20)
375 (IP21)
268 (IP20}
375 (IP21)
390 480 480 650 399 520 680 770 550 660
Width (mm) 90 130 200 242 242 242 165 230 308 370 308 370
Depth (mm) 205 (IP20)
207 (IP21)
205 (IP20)
207 (IP21)
175 195 260 260 249 242 310 335 333 333

Frame Size A2

Height (mm) 268 (IP20)
375 (IP21)
Width (mm) 90
Depth (mm) 205 (IP20)
207 (IP21)

Frame Size A3

Height (mm) 268 (IP20)
375 (IP21)
Width (mm) 130
Depth (mm) 205 (IP20)
207 (IP21)

Frame Size A4

Height (mm) 390
Width (mm) 200
Depth (mm) 175

Frame Size A5

Height (mm) 480
Width (mm) 242
Depth (mm) 195

Frame Size B1

Height (mm) 480
Width (mm) 242
Depth (mm) 260

Frame Size B2

Height (mm) 650
Width (mm) 242
Depth (mm) 260

Frame Size B3

Height (mm) 399
Width (mm) 165
Depth (mm) 249

Frame Size B4

Height (mm) 520
Width (mm) 230
Depth (mm) 242

Frame Size C1

Height (mm) 680
Width (mm) 308
Depth (mm) 310

Frame Size C2

Height (mm) 770
Width (mm) 370
Depth (mm) 335

Frame Size C3

Height (mm) 550
Width (mm) 308
Depth (mm) 333

Frame Size C4

Height (mm) 660
Width (mm) 370
Depth (mm) 333

VLT HVAC Drive Specifications

Communication Built in:
  • FC protocol
  • N2 Metasys
  • FLN Apogee
  • Modbus RTU
  • BACnet (embedded)
  • Profibus
  • DeviceNet
  • LonWorks
  • BACnet
  • Profinet
  • EtherNet/IP
  • Modbus TCP
  • BACnet/IP
Onboard I/O
  • 6 Digital inputs (2 can be used as digital outputs)
  • 2 Analogue inputs
  • 2 Pulse inputs
  • 2 Digital outputs
  • 1 Analogue output
  • Electronic thermal motor protection against overload
  • Temperature monitoring of the heatsink ensures that the drive trips if the temperature reaches 95° C ± 5° C
  • The drive is protected against short-circuits on motor terminals U, V, W
  • The drive is protected against earth faults on motor terminals U, V, W
  • Protection against mains phase loss
  • Enclosure: IP: 00/20/21/54/55/66 UL Type: Chassis/1/12/3R/4X Outdoor
  • Ambient temperature: Max. 50° C w/o derating
  • Vibration test: 1.0 g (D enclosures: 0.7 g)
  • Max. relative humidity: 5% – 95% (IEC 721-3-3; Class 3K3 (non-condensing) during operation
  • Galvanic isolation of all: I/O supplies according to PELV
  • Aggressive environment: Designed for coated/standard 3C3/3C2 (IEC 60721-3-3)

VLT HVAC Drive Features

VLT HVAC Drive Features


As the name suggests, the VLT HVAC is suitable for all heating, ventilation and air conditioning applications (HVAC) such as:

  1. > Fans
  2. > Pumps
  3. > Compressors


Download more information about the Danfoss VLT HVAC Drive FC 102 including manuals and brochures.

Tick icon

Dedicated to HVAC

There are an array of features packed into the FC 102 drives specifically for fan and pump applications. Features such as a pump cascade control option, dry pump protection, resonance monitoring and intelligent AHU functions. For a full list of pump and fan specific options, check out the brochure in our PDF section.

Tick icon

Stand-alone drive solution

VLT HVAC provides intelligent stand-alone functionality via several features including built-in real time clock which can be used to adjust building comfort to demands that change over the week, programmable actions, the Smart Logic Controller and 4 auto-tuned PID controllers.

Fan icon

Intelligent heat management

The unique cooling system prevents dusty and aggressive ambient airflow damaging the drive electronics. The cooling air and the internal electronics are separated, protecting electronics from contaminants.

Energy icon

Minimise energy costs

As energy becomes increasingly expensive, variable speed control of electrical motors has proven to be one of the most effective cost-reducing measures available. For example, by reducing the average speed of the motor from 100% to 80% in pumps or fans, 50% energy is saved. Reducing the average speed by 50% increases the savings to 80%.

How to find your VLT HVAC part number

The part number for your VLT HVAC inverter drive can be located on a label stuck to the top of the drive. This is the number we will need if you need us to supply a replacement drive, or the number you should use to search for prices online.

VLT HVAC Drive part number