LME75.831A1PKG-PRG1 Siemens Flame Safeguard

Overview

The Siemens LME75.831A1PKG-PRG1 is a comprehensive, microprocessor-based flame safeguard package designed for the supervision and control of forced draft burners of medium to large capacity. This specific kit includes the LME75.000A1 burner control base unit, the PME75.831A1 program module, and a complete plug-in connector set. Engineered for continuous operation (over 24 hours), it ensures high-level safety and efficiency in industrial and commercial combustion systems. It is capable of managing 1-stage or modulating burners and is designed for use with self-checking UV scanners, infrared scanners, or ionization probes.

Features

• Continuous Operation: Designed for high-demand applications requiring uninterrupted burner supervision for more than 24 hours.
• Versatile Flame Supervision: Compatible with self-checking UV flame detectors (like QRA7), infrared (QRI), and ionization probes.
• Integrated Valve Proving: Features a built-in function to check for valve leakage, enhancing overall system safety.
• Modular Design: The plug-in package simplifies installation and replacement of the program module to suit specific burner requirements.
• Digital Signal Processing: Ensures accurate control sequences and reliable timing for all safety-critical phases.
• Fault Diagnostics: Includes a multicolor LED and built-in display for clear indication of operational status and error codes.
• SIL3 Capable: Meets high safety integrity level standards for industrial thermoprocessing plants (EN 746-2).
• Remote Reset: Allows for electrical remote lockout reset for improved operational efficiency.

Specifications

• Model: LME75.831A1PKG-PRG1
• Components: LME75.000A1 (Base) + PME75.831A1 (Module) + Plug Kit
• Supply Voltage: AC 120 V (+10% / -15%)
• Frequency: 50/60 Hz
• Safety Level: SIL3 (Safety Integrity Level 3)
• Protection Rating: IP40 (when mounted correctly)
• Operating Temperature: -20 C to +60 C
• Weight: Approximately 5.0 lbs (package weight)
• Dimensions: Approximately 12 x 8 x 8 inches (package size)
• Life Cycle: Designed for 250,000 startup cycles (approx. 10 years)

Applications

• Industrial Burners: Ideal for 1-stage or modulating forced draft burners in industrial thermal processing.
• Heating Systems: Used in medium to large capacity boilers and commercial heating plants.
• Fuel Types: Suitable for both oil and gas burners, including atmospheric gas burners.
• Specific Burner Control: Recommended for systems requiring linkageless fuel-air ratio control or PWM fan control.
• Compliance: Designed for applications following EN 676 (gas burners), EN 267 (liquid fuel burners), and EN 746-2 (industrial thermoprocessing).