LME75.811A1PKG-PRG4 Siemens Flame Safeguard

Overview

The Siemens LME75.811A1PKG-PRG4 is a high-performance, microprocessor-based burner control package designed for the supervision and control of forced draft burners of medium to large capacity. This comprehensive set includes the LME75.000A1 base unit, the PME75.811A1 program module, and a complete plug kit. Engineered for continuous operation exceeding 24 hours, it provides a flexible and cost-effective solution for managing 1-stage or modulating burners, ensuring high safety standards with its SIL3 classification.

Features

• Microprocessor-based digital signal handling for accurate control sequences and timing
• Multicolor LED signal lamp provides clear status and fault messages for simplified diagnostics
• Integrated valve proving function and air pressure supervision for enhanced system safety
• Compatible with self-checking UV scanners, infrared scanners, and ionization probes for versatile flame monitoring
• Supports electronic fuel-air ratio control with programmable actuator modulation via PWM, analog, or 3-position signals
• Built-in BC interface for connection to remote displays (AZL2) or cloud gateways (OCI460)
• Electrical remote lockout reset facility and undervoltage detection

Specifications

• Model: LME75.811A1PKG-PRG4
• Voltage: AC 120 V (50/60 Hz)
• Operating Mode: Continuous (> 24 hours)
• Safety Level: SIL3 Capable (per DIN EN 13611)
• Degree of Protection: IP40 (when mounted)
• 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, AGG3.710 plug set

Applications

• Supervision of 1-stage or modulating forced draft burners using gas or liquid fuels
• Industrial thermoprocessing equipment in accordance with EN 746-2
• Commercial and industrial boiler systems requiring continuous burner operation
• Direct or pilot-ignited burners with pneumatic or mechanical ratio control modulation
• Safety-related combustion systems requiring high safety integrity levels (SIL3)