Product Description:

The 178B0898 is a variable frequency drive engineered by Danfoss for the VLT 6000 HVAC Drives series. Classified as an HVAC drive, it forms the power-conversion link between a three-phase supply and induction motors used in building air-movement and hydronic systems. By varying output frequency and voltage, the device maintains pressure, temperature, or airflow targets commanded by the building management system. This control can reduce energy consumption and acoustic noise in packaged rooftop units, terminal boxes, and secondary pump loops.

Rated output power reaches 2.2 kW, which is equivalent to 3.0 HP and provides sufficient capacity to operate small fans or pumps in air-handling zones. The input section accepts three-phase mains from 380–460 VAC, so the unit can be wired directly to common industrial distribution panels without transformers. A built-in cascade controller allows the sequential starting and load sharing of parallel pumps or fans, helping prevent short cycling and unnecessary equipment wear. The drive uses a slim book-style IP20 housing, conserving cabinet space while providing finger-safe terminals. To limit conducted emissions, the power stage incorporates a Class A1 and Class B filter, enabling installation on supply networks that require basic electromagnetic compatibility without external filter modules.

The local operator interface includes an LCP, providing local parameter access, setpoint adjustment, and plain-text fault codes without external tools. For environments where exposure to moisture, dust, and chemical vapors is minimal, the electronics have no conformal coating, which supports direct heat dissipation from internal components. The electronics platform is a standard unit, so its input and output terminals and protective features follow the baseline product configuration. No fieldbus option is installed at the factory. Process controllers therefore connect through hardwired analog and digital signals when network communication is not required.