LME75.831A1PKG Siemens Flame Safeguard

Overview

The Siemens LME75.831A1PKG is a high-performance microprocessor-based flame safeguard package designed for the supervision of 1-stage or modulating forced draft burners in continuous operation. This comprehensive kit includes the LME75.000A1 basic unit, the PME75.831A1 program module, and a complete plug kit to simplify installation and ordering. Engineered for industrial and commercial burner applications, it provides essential safety functions including burner sequencing, flame monitoring, and integrated valve proving. Its modular design allows it to work with a variety of flame detectors, such as self-checking UV scanners, infrared scanners, or ionization probes, ensuring reliable performance in high-demand environments.

Features

• Designed for continuous operation exceeding 24 hours of uninterrupted service
• Integrated valve proving function for enhanced gas train safety
• Compatible with self-checking UV scanners, infrared scanners, and flame rods
• Digital signal handling for high-precision control and repeatable sequencing
• Multi-color LED indicator provides clear status and fault message signaling
• Configurable safety parameters to tailor performance to specific application needs
• Independent wiring for safety interlocks to facilitate rapid fault diagnosis
• SIL 3 capable, meeting high safety integrity standards for industrial thermal processing

Specifications

• Model: LME75.831A1PKG
• Supply Voltage: AC 120 V (50/60 Hz)
• Power Consumption: Approx. 3 VA
• Degree of Protection: IP40 (when mounted)
• Operating Temperature: -20 C to +60 C
• Design Lifetime: 250,000 burner startup cycles (approx. 10 years)
• Safety Class: I (according to EN 60730-1)
• Components: LME75.000A1 Base Unit, PME75.831A1 Module, Plug Kit

Applications

• Supervision of 1-stage or modulating forced draft gas and oil burners
• High-demand industrial thermal processing plants (conforming to EN 746-2)
• Commercial boiler systems requiring continuous or intermittent operation
• Integration with Siemens SQM4 or SQM5 actuators for electronic fuel-air ratio control
• Direct or pilot-ignited burners for HVAC and process heating equipment