Product Description:

The 178B5163 is an AC variable frequency drive produced by Danfoss within the VLT 6000 HVAC Drives series. Built for heating, ventilation, and air-conditioning duties, the unit varies motor speed on fans, pumps, and compressors to match real-time demand, lowering energy use and reducing cycling wear. In building automation systems, it connects to contactors, pressure sensors, and central controllers, keeping airflow, chilled-water flow, or duct static pressure at commanded setpoints across commercial and industrial installations.

The drive accepts a three-phase supply of 380–460 VAC, allowing direct connection to standard low-voltage switchgear without step-up or step-down transformers. Its inverter stage is rated for 90 kW / 125 HP, giving it sufficient capacity for large air-handling units or cooling-tower fans. A Compact IP54 housing protects the power section from dust and water spray, allowing installation in mechanical rooms or suitable rooftop enclosures. Conducted electromagnetic emissions are suppressed by an integrated Class A1 and Class B RFI filter, which helps the installation meet typical electromagnetic compatibility limits. Setup is performed through a front-mounted Local Control Panel that provides parameter access, fault information, and start-stop keys without requiring external tools.

The electronics have no conformal coating, so the circuit boards should remain in dry, noncorrosive environments. Communication expansion is not included because the drive has no fieldbus option, so speed references and feedback signals must use hardwired analog or digital connections. The power components use a standard hardware design that is suitable for typical HVAC load profiles rather than heavy-duty or high-overload operation. Because the drive has no application option, it uses the generic HVAC macro, which supports variable-torque control, sleep mode, and automatic restart without additional plug-in modules.