Product Description:

The 175Z7286 is an HVAC variable-frequency drive manufactured by Danfoss for the VLT 6000 HVAC Drives series. It serves as the motor controller in air-handling units, cooling towers, and pump skids by converting three-phase mains power into a pulse-width-modulated output that tracks the load profile of the building automation system. The drive adjusts fan or pump speed so that temperature, pressure, or flow is maintained without the energy losses associated with discharge dampers or bypass valves.

This model accepts an input range of 380–460 VAC, allowing installation on common 60 Hz distribution networks in North America and many export markets. Its continuous output capability reaches 7.5 kW (10 HP), so it can run midsize induction motors found in supply fans or condenser water loops. The drive uses a Compact NEMA 1 housing that can be mounted inside conditioned electrical rooms while providing protection against accidental contact with live parts. Line-conducted emissions are suppressed by the integrated Class A1 filter, supporting compliance with general-purpose electromagnetic compatibility limits without external chokes. Operator interaction is handled through the detachable Local Control Panel, which provides parameter access, start and stop keys, and a numeric display for setup or troubleshooting.

The unit has no conformal coating, so it is intended for clean, dry environments rather than corrosive or high-humidity areas. Networking provisions are absent because no fieldbus options are fitted; command signals therefore arrive through discrete I/O or the analog references on the terminal strip. Internally, it uses standard hardware with a general-purpose control board rather than specialized application modules. The target installation is designated as Graham. The baseline control arrangement allows the drive to regulate common HVAC loads through its built-in analog and discrete interfaces.