175Z7032 by Danfoss

The 175Z7032 is an AC drive produced by Danfoss for the VLT 6000 HVAC Drives series. As an adjustable-speed controller, it modulates three-phase induction motors that run air-handling units, pumps, and condensers in centralized building systems. By varying motor frequency, the unit reduces energy use while maintaining the airflow or water flow required by heating, ventilation, and air-conditioning processes. It is intended for variable-speed operation in building services where motor demand changes throughout the day.

This model accepts an input range of 380-460 VAC, so it can be wired directly to common industrial mains without an autotransformer. Its output capability is rated at 22 kW / 30 HP, giving it the capacity to start and regulate medium-sized supply fans or booster pumps. This output level supports steady operation on motors commonly used in commercial ventilation and water-moving systems. The housing is a compact IP20 enclosure; live parts are finger-safe, but the drive still needs cabinet mounting to limit exposure to moisture or airborne debris. Operators adjust parameters through an integrated LCP (Local Control Panel), which shows real-time speed, current, and alarm readouts. For conducted emissions, a built-in Class A1 and B filter attenuates radio-frequency noise for installations that require industrial or residential EMC performance.

All application categories are fixed to HVAC, so the parameter structure is intended for typical fan and pump duties. Circuit boards are left with no coating, which limits placement to clean, temperature-controlled electrical rooms. Internally, the electronics use a standard unit design with no special marine or crane modifications. The drive ships without a fieldbus interface, so control is handled through hard-wired I/O or the keypad. This arrangement fits installations that use discrete wiring for start, stop, speed reference, and alarm signals.