Danfoss HVAC variable frequency drives feature a modular design that allows users to buy precisely what they need for their specific application. The impressive range of standard I/O can be expanded through factory or field installable ridged, self-identifying option cards that fit seamlessly under the drive keypad. With enhanced HVAC-specific capabilities and custom programmability, including integral cascade control, fan control and compressor control features, each drive provides simple out-of-the-box operation. Integrated fuses and disconnect capability are included in each drive enclosure. All drives are configured and tested to customer specifications at the factory.
VLT HVAC drives also feature open communications, enabling them to speak and understand any HVAC language. An award winning enhanced user interface and display provides an intuitive, English-language menu graphical readout for easy operation. Enhanced PC tools such as HVAC Energy Box (an energy analysis tool), MCT 10 (drive configuration and setup software), and a USB-port interface, further enhance user friendliness and ease of use.
Packages are available in either two contactor or three contactor configurations, from ½ HP through 350HP at 460 & 600VAC, or ½ HP through 60HP at 208 and 230VAC. NEMA/UL Type 1 or Type 12 enclosures are available for all package configurations, and in many cases the physical size of the packaged solution does not change with the enclosure rating. All packages include drive-only input fusing. A wide range of optional power features are available including dual motors operation, contactor motor selection, input reactors, dV/dt filters, and selection between input disconnect, fused disconnect or circuit breaker.