175Z7059 by Danfoss

The 175Z7059 drive is manufactured by Danfoss and belongs to the VLT 6000 HVAC Drives series. This variable-frequency unit is intended for commercial and industrial climate-control systems where fan and pump motors must track fluctuating load demands. By adjusting motor speed rather than relying on throttling devices, the drive contributes to reduced energy consumption and stable comfort levels across building zones that are managed by centralized automation.

It accepts a three-phase supply of 380-460 VAC, giving installers flexibility across common low-voltage distribution grids. The power section is rated for 37 kW / 50 HP, so the drive can handle medium-frame motors found on large air handlers or chilled-water pumps. A compact IP 54 enclosure allows wall or panel mounting in mechanical rooms that may be exposed to dust and splashing water while still avoiding an external cabinet. Operation and parameter access are performed through the integrated local control panel (LCP), which presents setpoints, alarms, and manual commands at the drive face. For conducted emissions, the built-in Class A1 and B RFI filter attenuates high-frequency noise so the installation meets typical residential and light-industrial electromagnetic-compatibility limits without extra line filters.

The firmware is tuned for HVAC application profiles such as variable-torque fan ramps, and the hardware is supplied as a standard unit. Protective resin is absent because the boards ship with no conformal coating, making the drive suited to dry indoor switchrooms rather than chemically aggressive zones. Communications are likewise streamlined; there are no fieldbus options, so speed reference and start-stop commands are expected through hard-wired analog or digital I/O already present on the base drive. This arrangement keeps control wiring on the base terminals and suits installations that use standard analog or digital control signals.