Location:  Home » Products » Danfoss Automation Series » Danfoss Inverter
Danfoss Inverter VLT® Refrigeration Drive
VLT® Refrigeration Drive FC 103

Available in power range 1.1-250 kW and various protection classes.  The drive suits the needs of pump, fan and compressor applications.  Operated and programmed with the same common user interface.

Refrigeration language 
For setting up the drive in the most efficient and logical way, the text and language used make complete sense to refrigeration engineers and installers. 

Easy setup with wizard 
The built-in “Wizard set-up menu” guides users through the setup of the drive in a clear and structured manner and supports following functionalities: 

- Multi compressor control 
- Multi condenser and evaporator fan 
- Multi condenser and evaporator pumps 

Power Range 
3 x 200 – 240 V........ 1.1 – 45 kW 
3 x 380 – 480 V.........1.1 – 315 kW 
3 x 525 – 600 V ....... 1.1 – 90 kW 

With 110% overload torque 

•Built for harsh environments 

Protection classes 
IP 20 (NEMA 1)...... 1.1 – 90 kW 
IP 21 (NEMA 1).......1.1 – 315 kW 
IP 54 (NEMA 12) .....110 – 315 kW 
IP 55 (NEMA 12)..... 1.1 – 90 kW 
IP 66 (NEMA 4X)..... 1.1 – 90 kW 

Maximum ambient temperature 
50˚ C without derating 

Coated electronics 
Improved reliability in corrosive and aggressive environments due to protection class 3C2 (EN 60721-3-3) as standard or optionally 3C3. 

• Software features 

Automatic Energy Optimization 
The standard feature AEO provides optimized motor magnetization at all speeds and loads. This increases energy efficiency by 5-15% for partial loads. 

LON for AKD, Modbus RTU. Enables fast and simple connections to overall controller. 

Sleep mode 
The drive detects when the load is too low and stops the motor. The load can e.g. be air flow or water pressure. 

Day/night control 
In day/night control mode the application runs normally during the day, while running with an increased set-point during night time.