LME75.811A1PKG-PRG1 Siemens Flame Safeguard

Overview

The Siemens LME75.811A1PKG-PRG1 is a comprehensive flame safeguard package designed for the commissioning and supervision of single-stage or modulating forced draft burners. This kit is specifically engineered for continuous operation, making it suitable for industrial applications that run for more than 24 hours without interruption. The package includes the LME75.000A1 burner control base unit, the PME75.811A1 program module, and a complete plug kit (AGG3.710) to simplify installation and wiring. Built with microprocessor-based technology, it ensures accurate control sequences and reliable flame monitoring for high-demand combustion systems.

Features

• Continuous Operation: Designed to supervise burner systems running for extended periods exceeding 24 hours.
• Integrated Valve Proving: Features a built-in function to check for valve leakage, enhancing system safety.
• Self-Checking Compatibility: Optimized for use with self-checking UV scanners (like the QRA7), infrared scanners, or ionization probes.
• Digital Signal Processing: Ensures high precision in control sequences and timings.
• Safety Interlocks: Independent wiring for safety interlocks provides specific fault indication for rapid troubleshooting.
• User Interface: Equipped with a multi-color LED signal lamp and compatible with the AZL2 display unit for detailed status and error diagnostics.
• Flexible Actuator Control: Supports integrated actuator control via 3-position controller, analog signal (0-10V, 4-20mA), or PWM blower speed management.
• SIL3 Capable: Suitable for use in safety-related industrial applications up to Safety Integrity Level 3.

Specifications

• Model: LME75.811A1PKG-PRG1
• Mains Voltage: AC 120 V (50/60 Hz)
• Power Consumption: Approximately 20 VA
• Safety Class: IP40 (when installed)
• Operating Temperature: -20 C to +60 C
• Design Lifetime: 250,000 burner startup cycles (approx. 10 years)
• Components Included: LME75.000A1 base, PME75.811A1 module, and AGG3.710 plug set
• Approvals: UL, FM, CSA, CE, and SIL3 rated

Applications

• Supervision of 1-stage or modulating forced draft gas burners.
• Industrial thermoprocessing plants in accordance with EN 746-2.
• Commercial and industrial boiler systems requiring continuous or high-demand operation.
• Use in linkageless burner management systems when paired with Siemens SQM actuators.
• Direct or pilot-ignited burner systems for both gaseous and liquid fuels.