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


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