25SU3-2100 Fireye Amplifier

Overview

The Fireye 25SU3-2100 is a microprocessor-based flame safeguard amplifier designed to detect the presence or absence of flame in single or multi-burner industrial environments. Engineered for 19-inch rack mounting, it provides high-performance flame signal processing and maximizes burner discrimination by accurately differentiating between various scanner pulse rates. This module is essential for ensuring combustion safety in demanding process heating applications.

Features

• Keypad entry system with an eight-character alpha-numeric LED display for easy configuration
• Password protection to prevent unauthorized alteration of programmed parameters
• Capacity to analyze pulse inputs from two flame scanners (A and B) simultaneously or independently
• Two programmable logic programs (Scanner Option 1 and 2) selectable via external dry contact
• Adjustable flame failure response time (FFRT) ranging from 1 to 6 seconds
• Adjustable independent flame relay pull-in and drop-out thresholds and delay-on times
• Integrated 4-20mA analog output for scalable flame signal measurement
• Remote communication capabilities to PLCs using Modbus or Allen-Bradley DF1 protocols
• Front panel LED status indicators for immediate visual diagnostics

Specifications

• Model Number: 25SU3-2100
• 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
• Dynamic Range: 1900 pulses per second
• Outputs: One fused DPDT form C flame relay and one SPDT form C marginal alarm relay
• Contact Ratings: Minimum 40mA @ 24 VDC/250 VAC; Maximum 3A @ 24 VDC or 4A @ 250 VAC
• Operating Temperature: -4 degree F to +140 degree F (-20 degree C to +60 degree C)
• Dimensions: 5.06″ H x 7.0″ D x 1.98″ W (10HP width)
• Shipping Weight: Approximately 1.2 lbs (0.5 kg)
• Approvals: CE approved

Applications

The 25SU3-2100 is primarily used in industrial burner management systems for monitoring complex multi-burner configurations. It is compatible with a variety of Fireye scanners, including the 45UV5, 45RM, and 45FS1 series. Its ability to discriminate between flames makes it ideal for utility boilers, large industrial furnaces, and chemical process heaters where multiple burners are in close proximity. It is designed for integration into standard 19-inch rack systems, such as the Fireye 60-2471 series racks.