LME71.111A1PKG-PRG6 Siemens Flame Safeguard

Overview

The Siemens LME71.111A1PKG-PRG6 is a high-performance, microprocessor-based flame safeguard control designed for the supervision and management of 1-stage or 2-stage gas or oil forced draft burners. This specific package comes preassembled and preprogrammed, featuring the LME71.000A1 base unit integrated with a PME71.111A1 program module and a complete AGG3.710 connector plug set. Engineered for medium to high-capacity industrial and commercial burner applications, it ensures safe burner startup and continuous operation by monitoring the flame and managing safety shut-off valves.

Features

• Preassembled unit including the base control, program module, and connector plug set for simplified installation
• Integrated Proof of Closure (POC) input to monitor and ensure gas valves are 100% closed for maximum safety
• Support for dual flame supervision via ionization probe, UV flame detector (QRA2, QRA4, or QRA10), or flame rod
• Programmable purge timing and configurable safety parameters to suit specific application requirements
• Multicolor LED interface providing clear status messages for operating phases and fault notifications
• Electrical remote lockout reset facility allowing for convenient system management
• Undervoltage detection and air pressure supervision with functional checks of the air pressure switch

Specifications

• Model: LME71.111A1PKG-PRG6
• Mains Voltage: AC 120 V (50/60 Hz)
• Power Consumption: Approximately 12 VA
• Safety Class: I
• Protection Rating: IP40 (when installed correctly)
• Response Time on Flame Loss: 3 seconds (factory default) or 1 second (adjustable)
• Operating Temperature: -20 C to +60 C
• Weight: Approximately 1.68 lbs (0.76 kg)
• Approvals: UL, FM, CSA, and CE compliant

Applications

• Supervision of 1-stage and 2-stage gas or oil forced draft burners in intermittent operation
• Management of industrial thermal process plants complying with EN 746-2 standards
• Control of atmospheric burners of medium to large capacity
• Suitable for use in HVAC and boiler systems requiring linkageless or basic flame safety supervision
• Integration into gas trains for commercial heating and industrial combustion plants