175Z7053 by Danfoss

The 175Z7053 is a variable frequency drive manufactured by Danfoss and supplied in the VLT 6000 HVAC Drives series. It is intended for industrial and commercial air-handling systems where accurate motor speed control helps reduce energy use and operating noise. By adjusting the output frequency to supply fans, return fans, or hydronic pumps, the drive allows building management systems to hold setpoints without relying on throttling valves or dampers. The unit serves as the power stage between a three-phase mains source and a standard induction motor, converting control commands into adjustable voltage and frequency for unattended operation.

Input flexibility is provided by the 380-460 VAC supply range, so the same chassis can be connected to many North American and European distribution systems. The inverter delivers up to 7.5 kW / 10 HP of motor output, which suits medium-frame motors commonly used in rooftop equipment. A compact IP54 housing helps protect the internal electronics from airborne dust and washdown spray, which supports wall or skid mounting in mechanical rooms. EMC performance is supported by a built-in Class A1 and B filter, which helps reduce conducted emissions on both the line and motor leads. Day-to-day parameter changes are made through the front-mounted LCP, which provides local start, stop, and setpoint access without external tools.

The control board has no coating, so the drive is best used in non-condensing spaces rather than corrosive process areas. Electronics and power modules follow the standard unit layout used for this drive type. The model ships with no fieldbus options, so speed references, alarms, and status signals are handled through hardwired terminals or building management system I/O. It is classified for HVAC duty, which suits fan and pump applications that need stable speed regulation and integrated protective functions.