LME73.820A1PKG Siemens Flame Safeguard

Overview

The Siemens LME73.820A1PKG is a microprocessor-based flame safeguard control assembly designed for the supervision and control of forced draft burners of medium to high capacity. This specific package includes the LME73.000A1 basic unit, the PME73.820A1 program module, and a connector plug set. It is engineered for the startup and supervision of 1-stage, 2-stage, or modulating burners in intermittent operation, providing critical safety functions such as undervoltage detection, air pressure supervision, and flame monitoring via ionization probe or UV detectors.

Features

• Integrated actuator control for one actuator via 3-position controller or analog signal
• Multicolored LED for indicating operating status and error messages
• 3 x 7-segment display for service, error, and status information
• Proof of Closure (POC) input for valve seat supervision
• Air pressure supervision with functional check of the air pressure switch during startup
• Adjustable parameters via AZL2 display unit or ACS410 software
• BC interface for connecting display or PC tools
• Designed for a lifetime of approximately 250,000 burner startup cycles

Specifications

• Model: LME73.820A1PKG
• Supply Voltage: AC 120 V (50/60 Hz)
• Components: LME73.000A1 basic unit + PME73.820A1 program module + AGG3.710 plug set
• Power Consumption: < 20 VA
• Degree of Protection: IP40 (when mounted)
• Operating Temperature: -20 C to +60 C
• Weight: Approximately 1.2 lbs (0.54 kg)
• Safety Standards: UL, FM, and CSA approved

Applications

• Supervision of gas-fired or oil-fired forced draft burners
• Multistage or modulating burners in industrial heating systems
• Commercial boiler and furnace control systems
• Burner management requiring integrated actuator position control
• Applications requiring valve proving and air-gas ratio control (depending on PME module)