LME71.111A1PKG-PRG21 Siemens Flame Safeguard

Overview

The Siemens LME71.111A1PKG-PRG21 is a preprogrammed, high-performance flame safeguard control assembly designed for the supervision of 1-stage or modulating forced draft oil or gas burners. This package typically consists of the LME71.000A1 base unit, the PME71.111A1 program module, and a compatible plug set. It serves as a critical safety component by managing burner startup, monitoring flame integrity via UV scanner or flame rod, and controlling safety shutoff valves to prevent hazardous conditions in industrial thermal process applications.

Features

• Comprehensive flame supervision for both startup and continuous operation
• Integrated multicolor LED for status indication and error messaging
• Digital signal handling ensures accurate control sequence timing
• Built-in BC interface for connection to PC or AZL2 remote display units
• Proof of Closure (POC) input for monitoring gas valve position and enhancing safety
• Electrical remote lockout reset facility for convenient system recovery
• Undervoltage detection to protect system components from electrical instability
• Adjustable safety parameters to suit specific application requirements

Specifications

• Model: LME71.111A1PKG-PRG21
• Mains Voltage: AC 120 V (50/60 Hz)
• Power Consumption: Approximately 12 VA
• Protection Rating: IP40 (when installed correctly)
• Operating Temperature: -20 C to +60 C
• Weight: Approximately 1.68 lbs to 5 lbs (depending on packaging)
• Approvals: UL, FM, CSA, CE
• Included Components: LME71.000A1 unit, PME71.111A1 program module, and AGG3.710 connector plug set

Applications

• Supervision of multistage or modulating forced draft gas or oil burners
• Atmospheric burners of medium to large capacity
• Industrial thermal process plants and high-demand burner cycles
• HVAC and commercial boiler systems requiring programmable purge cycles
• Systems utilizing UV flame scanners or flame rods for detection