Product Details

The Fireye NXVFD763A is a factory-integrated variable frequency drive engineered exclusively for the Fireye Nexus combustion platform to regulate combustion blower motor speed. This variable frequency drive accepts analog and bus speed setpoints from PPC4000, PPC6000 and NX6300 parallel positioning controllers, dynamically adjusting blower airflow to match fuel demand and maintain stable fuel-air ratio. As a reliable burner blower VFD, it comes housed in a rugged NEMA 12 enclosure, equipped with fused line disconnect, motor overload protection and local backlit LCD keypad for parameter setup, runtime monitoring and fault diagnosis. This Nexus combustion inverter delivers smooth fan modulation across the full firing range, cuts standby power draw and helps reduce NOx and CO emissions; it is widely deployed on gas and oil-fired industrial boilers and process heaters and stocked as genuine replacement spare part for Fireye Nexus burner management systems.

Basic Parameters

Brand: Fireye

Model: NXVFD763A

Type: Combustion blower variable frequency drive

Rated power: 3 HP

Rated continuous current: 4.2 A

Power supply: 600 VAC, three-phase, 50 / 60 Hz

Enclosure rating: NEMA 12

Built-in features: Fused disconnect switch, motor overload relay, backlit LCD display and programming keypad

Interface: Analog speed command, speed feedback, compatible with Nexus control bus

Compatible master controllers: PPC4000, PPC6000, NX6300

Target load: Combustion air blower motor

Certifications: UL listed, CE compliant

Product type: Original Fireye Nexus blower inverter

Supported Functions

This VFD receives modulation commands from the host combustion controller and continuously modulates blower speed to follow firing rate demand. It provides comprehensive motor protection including overload, overvoltage, undervoltage, phase loss and short-circuit protection. Users can review running frequency, motor current, operating hours and fault history on the local keypad, and configure acceleration and deceleration ramps to avoid airflow shock during ignition, load ramp-up and shutdown. It works together with PXMS pressure transmitters and oxygen trim signals to implement closed-loop energy-saving combustion control.

Core Functions

The integrated NEMA 12 cabinet provides dependable defence against dust and moisture typical in boiler houses. Pre-assembled internal components reduce field wiring and commissioning labour. Its fine speed resolution supports precise air tuning for low-emission combustion, and it serves as direct drop‑in substitution for existing NXVFD763A variable frequency drives.

Hardware Specifications & Environmental Features

Mounting: Panel or floor cabinet mounting

Operating temperature: 0 °C to +40 °C

Storage temperature: -40 °C to +85 °C

Relative humidity: 5% – 90%, non‑condensing

Protection class: NEMA 12

Housing: Heavy-duty painted metal cabinet

Condition: Original new Fireye variable frequency drive

Industry Applications: Applied in legacy petrochemical distributed control, old paper making production automation, material handling conveyor lines, packaging and textile machinery, water treatment remote signal collection and large conveyor remote I/O control racks.

Note: Confirm three-phase 600V supply, blower motor nameplate rating and Nexus controller signal compatibility before ordering; this drive is purpose-built for combustion blowers and requires application evaluation for general motor duties.

This is from our current stock.

available stock.xlsx