Product Description:

The Danfoss 175Z7052 is an AC variable frequency drive in the VLT 6000 HVAC Drives series. Designed for ventilation and hydronic circuits, the unit converts fixed-frequency mains power into a modulated output that matches the real-time demand of fan and pump motors in building management systems. By altering motor speed instead of relying on mechanical dampers or valves, it reduces energy consumption and helps maintain stable temperature and pressure conditions throughout industrial and commercial facilities. The drive can regulate equipment such as supply fans, return fans, circulation pumps, and cooling tower fans.

The drive accepts a three-phase input range of 380–460 VAC, allowing installation on common low-voltage distribution networks without transformers. Its output capacity is 5.5 kW / 7.5 HP, which is suitable for medium-frame induction motors commonly used in air-handling and water-circulation systems. Protection against dust and water jets is provided by the compact IP54 enclosure, so the device may be wall-mounted in mechanical rooms without an additional cabinet. Conducted emissions are attenuated by an integrated Class A1 and B filter, supporting compliance with applicable electromagnetic compatibility requirements. Local operating parameters appear on the detachable LCP (Local Control Panel), which also provides start, stop, and speed commands. The removable keypad allows settings to be viewed and adjusted directly at the installed drive.

Internally, the drive uses the standard unit configuration, with no special harmonic chokes or extended input and output boards installed. The power section has no protective coating, so the surrounding atmosphere should remain free of corrosive chemicals and excessive airborne contamination. The application and fieldbus expansion slots include no optional modules, leaving the drive to operate through hardwired analog or digital references. Its control algorithms are tuned specifically for HVAC loads, providing quadratic voltage-to-frequency profiles that match the operating characteristics of centrifugal fans and pumps. Automatic sleep control can stop the motor when system demand falls below the configured threshold. When demand returns, the drive can resume motor operation in response to the connected control signals.