Name: Fireye 25SU3-2000 19 inch European rack mounted flame protection amplifier - MASSIVE
Brand: Fireye

Description

Fireye 25SU3-2000 19 inch European rack mounted flame protection amplifier

Product Introduction

The Fireye 25SU3‑2000 is a 19‑inch Euro‑rack mounted flame safeguard amplifier for industrial combustion safety systemsAutomatic …. It receives pulse‑based input signals from up to two remote flame scanners, processes raw flame pulse data, and delivers relay outputs plus analog measurement signals to burner management systems (BMS). It provides continuous flame presence verification, flame‑failure trip protection, and marginal‑flame pre‑alarm function for single‑burner or multi‑burner installations. Programmable thresholds and dual‑scanner logic allow accurate target‑burner discrimination to avoid false flame detection caused by adjacent burner cross‑talk in large furnaces and boilers. Designed for continuous‑duty heavy‑industry environments, it offers local keypad configuration, on‑board display, and serial communication for system integration.

Fireye 25SU3-2000

Main Technical Specifications

Parameter	Specification
Model	25SU3‑2000
Device Type	Flame safeguard amplifier, rack‑mount module
Mechanical Format	19‑inch Euro‑rack standard card format
Power Supply	24 VAC / 24 VDCAutomatic …
Scanner Input	2‑channel pulse input for flame scanners (Channel A / B)
Dynamic Pulse Rate Range	0‑1900 pulses per second
Analog Output	4‑20 mA proportional flame‑strength signalAutomatic …
Flame Failure Response Time (FFRT)	Programmable: 1‑6 secondsAutomatic …
Relay Outputs	Flame‑on relay; Marginal‑alarm relay
Programmable Parameters	Pull‑in threshold, drop‑out threshold, marginal alarm setpoint, scanner logic modes, delay timers
Human‑Machine Interface	Local keypad + digital display for real‑time pulse‑rate reading and parameter setup
Communication	Modbus / DF1 serial remote communication capabilityAutomatic …
Operating Environment	Industrial cabinet‑mount; resistant to vibration and electrical noise

Typical Applications

Utility‑power boilers, multi‑burner fossil‑fuel boilers (gas, oil, pulverized coal)
Petrochemical process heaters and refinery furnaces
Steel‑plant combustion furnaces and thermal‑processing equipment
Large‑scale industrial burners with requirement for cross‑flame discrimination
Retrofit upgrade for legacy burner‑safety systems with 19‑inch rack cabinet infrastructure
Continuous‑process plants where false‑trip or lost‑flame hazards must be strictly controlled

Technical Pitfalls to Avoid

Scanner‑Amplifier Mismatch: This unit works with pulse‑output type flame scanners only. DC‑output UV detectors cannot drive the 25SU3‑2000 correctly; wrong scanner type leads to unstable or zero flame reading.
Cross‑flame interference in multi‑burner furnaces: Without proper scanner‑logic configuration, the amplifier may pick up adjacent‑burner flame pulses and falsely report “flame present” after target‑burner extinction. Always tune pull‑in / drop‑out thresholds according to real‑site pulse‑rate data.
Improper FFRT setting: Too‑short FFRT causes nuisance trips; too‑long FFRT compromises combustion‑safety compliance. FFRT shall comply with local boiler‑safety codes.
Noise‑prone field wiring: Scanner signal cables must be separated from high‑power‑cable runs. Poor shielding or shared cable trays produce pulse‑signal corruption, drifting 4‑20 mA values and random relay chatter.
Ignoring marginal‑alarm function: Operators sometimes disable marginal‑alarm relays. Degrading scanner lenses or cable degradation will not trigger early warning, resulting in sudden unplanned flame‑failure trips.
Wrong supply voltage: Do not feed 120 VAC / 230 VAC to this module; power input must strictly follow 24 VAC / 24 VDC requirement, otherwise permanent hardware damage occursAutomatic ….
Retrofit compatibility risk: When replacing older Fireye 25SU series modules, verify cabinet rack pin‑out, scanner wiring and logic‑mode mapping; direct drop‑in swap without parameter review frequently causes safety‑logic deviation.