LME73.812A1PKG-PRG4 Siemens Flame Safeguard

Overview

The Siemens LME73.812A1PKG-PRG4 is an advanced, microprocessor-based flame safeguard assembly designed for the supervision and control of multistage or modulating forced draft gas or oil burners. This specific package includes the LME73.000A1 burner control base unit, the PME73.812A1 program module, and a complete plug kit. It is engineered for intermittent operation in medium to high-capacity combustion systems, providing critical safety functions such as automatic safety shutdown and integrated flame supervision. The LME73 series is particularly noted for its ability to provide closed-loop control by driving and proving actuator positions for purge and ignition, ensuring high precision in industrial and commercial burner applications.

Features

• Modular design allows for flexible system integration and easier maintenance or servicing
• Integrated flame supervision compatible with ionization probes or UV flame detectors
• Closed-loop actuator control specifically designed to pair with SQM4 or SQM5 actuators
• Drive and prove functionality ensures actuators are in the correct position for purge and ignition
• Multicolor LED signal lamp provides clear status and fault notifications for diagnostics
• Password-protected parameters ensure that critical safety settings are only accessible by authorized personnel
• Digital signal handling provides accurate control sequences and reliable operation
• BC interface allows for connection to remote displays like the AZL2 or PC-based diagnostic tools

Specifications

• Model: LME73.812A1PKG-PRG4
• Input Voltage: AC 120 V (50/60 Hz)
• Program Module: PME73.812A1 (includes modulating actuator control with independent ignition position)
• Operating Life: Designed for 250,000 burner startup cycles (approx. 10 years)
• Components Included: LME73.000A1 base unit, PME73.812A1 module, and plug set
• Enclosure Material: Durable molded plastic housing
• Dimensions: Approximately 12 x 8 x 8 inches
• Weight: Approximately 5 lbs (2.27 kg)
• Compliance: Tested to meet international standards such as EN 298, UL, and CSA

Applications

• Supervision of modulating forced draft burners in industrial and commercial plants
• Management of gas and oil-fired heating systems requiring precise fuel-air ratio control
• Boiler rooms, furnaces, and large-scale thermal processing plants
• Systems utilizing linkageless control with SQM series actuators for high-demand burner cycles
• Applications requiring independent ignition positions and adjustable purge timing