Product Details

The Fireye NXVFD754A is a factory-assembled variable frequency drive dedicated to the Fireye Nexus combustion control platform, built to regulate combustion blower motor speed for industrial gas and oil burners. This variable frequency drive receives analog and bus modulation setpoints from PPC4000, PPC6000 and NX6300 parallel positioning controllers, continuously adjusting blower airflow to match fuel delivery and maintain stable fuel-air ratio across the full firing range. As a reliable burner blower VFD, it is housed in a heavy-duty NEMA 12 enclosure, pre-equipped with fused line disconnect, motor overload relay and backlit local LCD keypad for parameter programming, real-time status reading and fault troubleshooting. This Nexus combustion inverter delivers smooth, high-resolution fan modulation, reduces standby power consumption and helps lower NOx and CO emissions on steam boilers, hot water boilers and process heaters; it is stocked as genuine replacement spare part for Fireye Nexus burner management systems.

Basic Parameters

Brand: Fireye

Model: NXVFD754A

Type: Combustion blower variable frequency drive

Rated power: 7.5 HP

Rated continuous current: 11.7 A

Power supply: 460 VAC, three-phase, 50 / 60 Hz

Enclosure rating: NEMA 12

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

Signal interface: Analog speed command, speed feedback, compatible with Nexus control bus

Compatible master controllers: PPC4000, PPC6000, NX6300

Suitable load: Combustion air blower motor

Certifications: UL listed, CE compliant

Product type: Original Fireye Nexus blower inverter

Supported Functions

This VFD follows firing demand signals transmitted by the host combustion controller and dynamically modulates blower motor speed. It provides comprehensive motor protection including overload, overvoltage, undervoltage, phase loss and short-circuit protection. Operators can view running frequency, motor current, cumulative runtime and fault history via the local keypad, and configure acceleration and deceleration ramps to avoid airflow surges during ignition, load adjustment and shutdown. It works together with PXMS pressure transmitters and oxygen trim probes to realize closed-loop energy-saving combustion control.

Core Functions

The rugged NEMA 12 cabinet offers dependable protection against dust, moisture and vibration commonly found in boiler rooms. Pre-assembled internal hardware reduces field wiring workload and shortens commissioning time for burner retrofit projects. Its stable high-torque output and fine speed resolution support precise air-fuel tuning for low-emission combustion, and it serves as direct drop‑in substitution for existing NXVFD754A 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 460V power supply, blower motor full load current rating and Nexus controller signal compatibility before ordering; this drive is purpose-built for combustion blowers and requires engineering evaluation for general motor applications.

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