LME71.111A1PKG-PRG25 Siemens Flame Safeguard

Overview

The Siemens LME71.111A1PKG-PRG25 is a comprehensive, microprocessor-based flame safeguard control package designed for the supervision of one- or two-stage gas forced-draft burners. This preprogrammed assembly serves as a critical safety unit for industrial thermal processes, managing burner startup and continuous operation to ensure combustion safety. It is typically supplied as a preassembled kit that includes the LME71.000A1 base unit, a PME71.111A1 programming module, and a complete connector plug set, facilitating a streamlined installation process.

Features

• Microprocessor-based control ensures high precision and reliable burner supervision
• Integrated multicolor LED signal lamp provides clear status and error messages
• Built-in display monitors flame signal strength and identifies specific safety interlock faults
• Programmable purge timing and configurable safety parameters to suit specific applications
• Electrical remote lockout reset facility for improved operational convenience
• Proof of Closure (POC) input for monitoring gas valve status and ensuring 100% closure
• Supports multiple flame detection methods including UV scanners and ionization probes
• BC interface allows for connection to AZL23 display units or PC service tools

Specifications

• Model: LME71.111A1PKG-PRG25
• Input Voltage: AC 120 V (50/60 Hz)
• Power Consumption: Approximately 12 VA
• Safety Class: I (with terminal base)
• Protection Rating: IP40 (when properly mounted)
• Operating Temperature: -20 C to +60 C
• Weight: Approximately 1.2 lbs to 1.68 lbs
• Approvals: UL listed, FM approved, CSA certified, and CE compliant
• Operation: Intermittent (at least one controlled shutdown every 24 hours)

Applications

• Supervision of multistage or modulating forced-draft oil and gas burners
• Management of atmospheric burners with medium to large capacity
• Industrial thermal process applications requiring linkageless burner management
• Commercial HVAC and boiler systems using 110V power supplies
• Burner configurations requiring pilot or direct ignition sequences