175Z7291 Danfoss
Wake Industrial LLC is not an authorized distributor of this product.
MPN: VLT6042GT4CN1STR3DLF00A00C0
The Danfoss 175Z7291 is part of the VLT 6000 HVAC Drives series and is rated for 30 kW or 40 HP with an input voltage of 380-460 VAC. It features a compact NEMA 1 enclosure, comes with an LCP display, and includes a Class A1 and B RFI filter. This standard unit is designed for Graham applications and does not have a conformal coating or fieldbus options.
Internal Product Review
The 175Z7291 is a Danfoss HVAC drive configured as a standard unit for 380-460 VAC operation. The local control panel and compact NEMA 1 enclosure support straightforward setup and clean cabinet integration. The 30/40 kW rating and Class A1 and B filter make this drive a strong fit for stable HVAC power conversion.
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Product Description:
The 175Z7291 is an AC variable-frequency drive manufactured by Danfoss for the VLT 6000 HVAC Drives series. It regulates induction-motor speed in air-handling units, pumps, and cooling towers so building automation systems can match airflow or water flow to thermal demand and reduce energy use. Drive-based modulation allows the connected equipment to respond to changing demand instead of relying on throttling devices for process control. This approach can improve electrical efficiency in commercial heating, ventilation, and air-conditioning systems.
This model delivers up to 30 kW (40 HP) of output and can operate a properly matched motor continuously without derating under the stated installation conditions. Incoming three-phase power within the 380–460 VAC range is rectified and pulse-width modulated to supply the motor with a variable frequency that follows the setpoint from the building management system. The electronics are housed in a compact NEMA 1 enclosure that supports panel mounting in conditioned electrical rooms while providing basic protection against incidental contact. A front-mounted local control panel (LCP) provides parameter access and manual run controls. The panel can also be removed for remote mounting when access through a closed cabinet door is required. A built-in Class A1 and B filter attenuates conducted electromagnetic emissions to reduce interference with adjacent instrumentation connected to shared power feeders.
The drive uses the Graham project profile, so its default parameters align with the control requirements prepared for that installation. The power section is supplied without a conformal coating, so the drive should be installed where condensation, corrosive vapors, and airborne contaminants are controlled. It is delivered as a standard unit without factory-installed expansion cards or special thermal protection options. Proportional-integral control allows the drive to regulate pressure, flow, or temperature from a process feedback signal. Sleep mode can stop the motor when system demand remains below the configured threshold, while the fire-override function can maintain operation when commanded by the building safety system.
