Product Description:

The 175Z7363 is an HVAC variable frequency drive produced by Danfoss for the VLT 6000 HVAC Drives series. In automated air-handling and chilled-water loops, the drive modulates motor speed so a building-management system can maintain pressure, temperature, or flow at a programmed setpoint instead of running equipment continuously at full speed. This closed-loop adjustment lowers electrical demand and mechanical wear in commercial and light-industrial ventilation plants. The drive can regulate connected fans and pumps in response to changing building loads, reducing unnecessary motor operation during periods of lower demand.

The drive supplies up to 18.5 kW or 25 HP to the motor terminals, so it can operate medium-sized fans or pumps without oversizing the electrical feeder. It accepts a three-phase input of 200–240 VAC, matching low-voltage distribution commonly found in regional HVAC switchboards. A compact NEMA 1 enclosure allows cabinet or wall mounting in clean equipment rooms while permitting access from the front. The integrated LCP keypad allows users to view operating status, change parameters, and initiate manual run commands without external tools. The drive has uncoated circuit boards, so the surrounding environment should be free from high humidity and corrosive vapors. Because the unit has no integrated RFI filter, any radio-frequency interference mitigation required for the installation must be provided separately.

The drive uses a standard configuration, with control, protection, and input/output functions based on the VLT 6000 platform. Its Graham application profile supports operation through the available standard control functions, while custom sequences or PID adjustments can be managed through the external building controller. The unit has no fieldbus connectivity, leaving conventional analog and relay signaling as its interface methods. Analog references can provide speed or process commands, while relay contacts can communicate operating status or fault conditions to external control equipment. The HVAC drive category makes the unit suitable for air-handling systems, chilled-water circulation, and other building-service applications that require adjustable motor speed. Standard VLT service accessories and parameter-copy tools can be used with the drive when supported by the selected installation equipment.