Product Description:

The 175Z7269 is an AC variable frequency drive built by Danfoss for the VLT 6000 series and intended for heating, ventilation, and air conditioning systems. It converts fixed-frequency mains power into a variable-frequency output, allowing building automation systems to regulate fan or pump speed through the connected motor. Direct speed control reduces reliance on mechanical throttling devices, improves energy efficiency, and stabilizes supply-air, return-air, and chilled-water processes in commercial facilities.

The drive accepts single-phase or three-phase input power from 200–240 VAC, allowing connection to compatible low-voltage distribution systems without a transformer. Its motor output is rated at 1.1 kW / 1.5 HP, providing suitable capacity for small blowers and circulation pumps. The Compact NEMA 1 enclosure supports indoor installation and provides basic protection against accidental contact and limited dust intrusion. A detachable LCP (Local Control Panel) provides access to parameters and supports local start, stop, and jog commands. The drive has no integrated RFI filter, so an appropriate external filter can be added when the electrical installation requires additional electromagnetic interference control.

The control chassis is configured as a standard unit without additional input, output, relay, or sensor boards installed. A Graham preset supports pressure-controlled fan sequences commonly used in air-handling equipment. The drive has no fieldbus communication, so remote monitoring and commands use hardwired analog inputs, digital inputs, or relay signals. It belongs to the HVAC Drives product class and includes PID control functions for temperature and pressure regulation. These control functions can use connected process sensors to adjust motor speed automatically and maintain the selected operating setpoints.