LME75.811A1PKG Siemens Flame Safeguard

Overview

The Siemens LME75.811A1PKG is a comprehensive burner control package designed for the supervision of forced draft burners of medium to large capacity in continuous operation. This all-in-one kit simplifies installation by providing the LME75.000A1 microprocessor-based base unit along with the PME75.811A1 program module and a complete connector plug set. Engineered for high-demand industrial thermal process applications, it offers extreme flexibility in flame monitoring, supporting self-checking UV scanners, infrared scanners, and ionization probes. Its integrated functionality includes actuator control, valve proving, and a multi-color LED display for clear operational status and fault diagnostics.

Features

• Continuous operation support for uninterrupted burner supervision exceeding 24 hours
• Universal flame supervision compatible with self-checking UV, infrared scanners, and flame rods
• Integrated actuator control for load-dependent modulation via 3-position or analog signals
• Built-in valve proving function to ensure fuel train integrity before and during operation
• Multi-color LED interface provides real-time status messages and detailed fault code indication
• Digital signal handling for high-precision control sequences and repeatable safety timing
• Modbus RTU or BACnet communication capabilities via optional modules for system integration
• Password-protected parameterization allowing for customized safety configurations and purge times
• Robust safety design including undervoltage detection and remote lockout reset facility

Specifications

• Model: LME75.811A1PKG
• Supply Voltage: AC 120 V (50/60 Hz)
• Base Unit: LME75.000A1
• Program Module: PME75.811A1
• Safety Integrity Level: SIL3 Capable (per DIN EN 13611)
• Degree of Protection: IP40 (when installed)
• Operating Temperature: -20 C to +60 C
• Design Lifetime: 250,000 start cycles (approx. 10 years)
• Power Consumption: Approximately 3 VA
• Package Components: Base unit, program module, and AGG3.710 plug set

Applications

• Supervision of 1-stage or modulating forced draft gas and oil burners
• Industrial thermoprocessing plants compliant with EN 746-2 standards
• Direct or pilot-ignited burner systems in commercial and industrial boilers
• Integration with SQM4 or SQM5 actuators for electronic fuel-air ratio control
• Continuous-run combustion systems requiring self-checking flame detection for safety compliance