LME71.111A1PKG-PRG14 Siemens Flame Safeguard

Overview

The Siemens LME71.111A1PKG-PRG14 is a high-performance, microprocessor-based flame safeguard assembly designed for the startup and supervision of 1-stage, direct-ignited or pilot-ignited forced draft gas burners. This preprogrammed package typically includes the LME71.000A1 basic unit, a PME71.111A1 program module, and a connector plug set, providing a comprehensive solution for industrial and commercial combustion systems. It serves as a critical safety controller, managing the ignition sequence and monitoring the flame to ensure secure burner operation in intermittent service.

Features

• Preprogrammed with a specific program sequence for efficient out-of-the-box integration
• Integrated 3-color LED signal lamp provides clear status and error messages
• Built-in 3 x 7-segment display for service information and diagnostics
• Programmable purge timing and air pressure supervision with functional checks
• Support for multiple flame detection methods including ionization probes and UV detectors
• Electrical remote lockout reset facility for convenient system management
• Undervoltage detection and restart limitation for enhanced operational safety
• BC interface for connection to operator display units or PC diagnostic tools

Specifications

• Model: LME71.111A1PKG-PRG14
• Mains Voltage: 120 V AC (50/60 Hz)
• Power Consumption: Approximately 12 VA
• Safety Class: I
• Protection Rating: IP40 (when mounted)
• Operating Temperature: -20 C to +60 C
• Designed Lifetime: 250,000 burner startup cycles (approx. 10 years)
• Shipping Weight: Approximately 1.68 lbs (0.76 kg)
• Approvals: UL, FM, CSA, and CE compliant

Applications

• Supervision of multistage or modulating forced draft burners
• Atmospheric gas burners of medium to large capacity
• Industrial process heating and commercial boiler systems
• Integration into gas trains requiring Proof of Closure (POC) and air flow supervision
• Applications utilizing UV flame detectors (QRA series) or ionization probes for flame monitoring