25SU3-2000 Fireye Amplifier

Overview

The Fireye 25SU3-2000 is a high-performance, 19-inch rack-mounted flame safeguard amplifier designed to detect the presence or absence of flame in single or multi-burner industrial environments. It excels in burner discrimination by accurately differentiating pulse rates from scanners, ensuring high reliability in complex combustion systems. This CE-approved module operates on 24 VAC or 24 VDC and supports remote communication for integration with PLCs and SCADA systems.

Features

• Keypad Entry System with password protection to prevent unauthorized parameter changes.
• Eight-character alpha-numeric LED display and front panel status indicators for real-time diagnostics.
• Dual Scanner Support capable of analyzing pulse inputs from two scanners (A and B) independently or in combination.
• Dual Logic Programs (Scanner Option 1 and 2) allowing users to select different operating parameters for different scanner configurations.
• Adjustable Thresholds and Timing including independent flame relay pull-in/drop-out thresholds and Flame Failure Response Time (FFRT) from 1 to 6 seconds.
• Remote Communication via Allen-Bradley DF1 or MODBUS RTU protocols for PLC integration.
• Scalable Analog Output (4-20mA) specifically for measuring and monitoring the flame signal.

Specifications

• Input Voltage: 24 VAC (+10%, -15%) 50/60 Hz or 24 VDC (+/-10%).
• Power Consumption: 5 VA with one scanner; 7.5 VA with two scanners.
• Outputs: One DPDT flame relay (fused at 1.5A), one SPDT marginal alarm relay, and one 4-20mA analog output.
• Dynamic Range: 1900 pulses per second.
• Temperature Range: Operating: -4F to +140F (-20C to +60C); Storage: -4F to +176F (-20C to +80C).
• Dimensions: 5.06″ H x 7.0″ D x 1.98″ W (10HP front panel width).
• Agency Approvals: CE Approved, FM Approved, and CSA Approved.

Applications

The 25SU3-2000 is primarily used in industrial combustion and burner management systems. It is ideal for multi-burner process heating installations where precise flame discrimination is required to distinguish between target flames and background radiation. It is commonly integrated into Fireye rack-based systems (full, half, or surface mount) to provide centralized flame safeguard control for large-scale boilers and furnaces.