LME71.112A1PKG-PRG4 Siemens Flame Safeguard

Overview

The Siemens LME71.112A1PKG-PRG4 is a high-performance, microprocessor-based flame safeguard assembly designed for the startup and supervision of multistage or modulating forced draft gas or oil burners. This package includes the LME71.000A1 base unit pre-programmed with the PME71.112A1 program module and includes a connector plug set for streamlined installation. Engineered for intermittent operation, this controller ensures safety by managing fuel valves and monitoring flame signals via ionization probes or UV detectors, specifically configured for applications that do not require a purge cycle.

Features

• Digital signal handling for high-precision control sequences and repeatable timing
• Multicolor LED indicator provides visual feedback for operating status and detailed error codes
• Integrated BC interface allows for connection to remote display units or PC diagnostic tools
• Electrical remote lockout reset facility for convenient system management
• Air pressure supervision with functional testing of the air pressure switch during startup
• Proof of Closure (POC) input for monitoring valve positions to ensure 100% shut-off safety
• Undervoltage detection mechanism to protect the burner system during power fluctuations
• Versatile flame supervision compatible with UV scanners (QRA series) or ionization probes

Specifications

• Model: LME71.112A1PKG-PRG4
• Mains Voltage: AC 120 V (+10% / -15%)
• Frequency: 50/60 Hz
• Power Consumption: Approximately 12 VA
• Protection Rating: IP40 (when mounted)
• Operating Temperature: -20 C to +60 C
• Weight: Approximately 1.2 lbs to 2.0 lbs
• Assembly Components: LME71.000A1 base unit, PME71.112A1 module, AGG3.710 plug set
• Safety Features: Non-purge configuration, POC switch support

Applications

• Supervision of medium to large capacity forced draft gas and oil burners
• Ideal for industrial thermal process plants and commercial boiler systems
• Used in modulating or multistage burner applications requiring linkageless control
• Suitable for atmospheric gas burners and forced draft burners in intermittent operation
• Integration into gas trains for HVAC systems where specialized pre-programming (PRG4) is required