LME22.331C2

Product Description

Home > Products > Siemens > Burner Control Need Siemens LME22.331C2? Burner Control for Gas burners, forced draft burners. Supplied with full traceability and documentation. Request a quote and... Price & Availability It is part of the LME22 series, designed for use with Siemens QRA55 or QRA57 flame detectors (UV sensors). The control provides automatic burner sequencing, flame monitoring, and safety shutdown in case of fault. It features a 2-second safety time, a pre-purge time of 30 seconds, and a post-ignition time of 2 seconds. The LME22.331C2 operates with a nominal voltage of AC 230 V and has a power consumption of 8 VA (including burner control). It is housed in a compact, flame-retardant plastic casing with a width of 106 mm, height of 88 mm, and depth of 56 mm, and is designed for panel mounting with screw terminals. The device is certified to EN 298 and UL 372 standards, ensuring high safety and reliability in industrial burner applications. The LME22.331C2 is a direct replacement for earlier LME22 models and is compatible with Siemens QRA55 and QRA57 flame detectors, as well as various actuators and valves. Its robust design and precise timing make it suitable for a wide range of commercial and industrial burners, including those in heating plants, process heat generation, and thermal oil systems. The Siemens LME22.331C2 is a microprocessor-based burner control for intermittent operation of forced draft gas burners. Basic Product Information Flame monitoring with UV sensor (QRA55/QRA57) Safety time 2 seconds, pre-purge time 30 seconds AC 230 V operating voltage, 50/60 Hz Compact design for panel mounting, screw terminals Certified to EN 298 and UL 372 Microprocessor-based burner control for intermittent operation Technical Specifications Version & Model Difference The LME22.331C2 is part of the LME22 series, which includes variants like LME22.331A2 and LME22.331B2. The 'C2' suffix indicates a specific configuration with a 30-second pre-purge time and 2-second safety time. Compared to earlier versions, the C2 model has updated firmware for improved flame signal processing and compatibility with newer UV sensors. It is also a direct replacement for older LME22.331A2 models, offering the same mounting and wiring but with enhanced performance. Application Scenarios Which flame detector should be used with the LME22.331C2? The LME22.331C2 is designed to work with Siemens QRA55 or QRA57 UV flame detectors. These sensors detect the UV radiation from the flame and send a signal to the control. Can the LME22.331C2 be used for both gas and oil burners? Yes, the LME22.331C2 is suitable for both gas and oil burners, provided that the appropriate flame detector (UV sensor) is used. It is commonly used in forced draft burners. What is the pre-purge time of the LME22.331C2? The pre-purge time is 30 seconds. This is the duration of the pre-purge phase where the burner fan runs to clear any residual gases before ignition. What is the safety time of the Siemens LME22.331C2? The safety time is 2 seconds, meaning the control will shut down the burner within 2 seconds if no flame is detected after ignition. Siemens 6ES7214-1BH50-0XB0 PLC CPU (Type-1) Siemens 6ES7231-4HF50-0XB0 Analog Input Module Siemens 6ES7231-5PD50-0XB0 Analog RTD Module Siemens 6ES7231-5QF50-0XB0 Analog TC Module (S7-1200) Siemens 6ES7233-4HF50-0XB0 Analog IO Module (SM 1234) Siemens 6ES7216-2BD23-0XB0 PLC CPU (Type-2) Siemens 6ES7223-1BH22-0XA0 PLC IO Module (Type-1) Siemens 6ES7223-5PH50-0XB0 PLC IO Module (Type-2)