LME41.051C2 Siemens Burner Control

Overview

The Siemens LME41.051C2 is a microprocessor-based burner control unit designed for the startup and supervision of 1- or 2-stage gas or gas/oil burners. Engineered for intermittent operation, this control unit is suitable for small to medium-capacity burners with or without fan assistance. It serves as a modern replacement for the legacy LGB and LMG burner control series, featuring digital signal handling to ensure high-precision control sequences. The LME41.051C2 is a critical safety component that manages ignition, flame monitoring, and shutdown sequences to prevent hazardous conditions in industrial heating applications.

Features

• Digital signal processing for accurate control sequences and high repeatability
• Undervoltage detection to prevent improper startup or operation during power fluctuations
• Air pressure supervision with a functional check of the air pressure switch during startup
• Multicolor LED indication for fault status and operational messages
• Electrical remote reset facility for efficient system management
• Controlled intermittent operation, requiring a restart after a maximum of 24 hours of continuous use
• Built with heat-resistant and flame-retardant plastic housing

Specifications

• Model: LME41.051C2
• Supply Voltage: AC 230 V (+10% / -15%)
• Mains Frequency: 50…60 Hz
• Power Consumption: 12 VA
• Safety Time (TSA): Max. 5 seconds
• Prepurge Time (t1): 1 second
• Degree of Protection: IP40 (when mounted correctly)
• Operating Temperature: -20 C to +60 C
• Weight: Approximately 160g
• Flame Supervision: Ionization probe or QRA flame detector (with AGQ3 ancillary unit)

Applications

• Used for the startup and supervision of 1- or 2-stage gas burners in intermittent operation
• Suitable for automatic forced draft burners for gaseous fuels in accordance with EN 676
• Designed for integration by original equipment manufacturers (OEMs) into burners and boilers
• Applicable for commercial and industrial heating systems, including industrial boilers, furnaces, and kilns
• Ideal for atmospheric burners and systems requiring specific safety shut-off and ignition sequences