Siemens Burner Management Systems Lmv 51.100 C2, Supply voltage: 230 V AC

Product Details

The Siemens LMV series (Linkageless Management System) represents the high-end tier of burner control. Unlike traditional controllers (like the LME or LFL), the LMV system replaces mechanical cams and linkages with electronic actuators, allowing for high-precision fuel-to-air ratio control. The system is primarily divided into two platforms: LMV2/3 (for mid-range burners) and LMV5 (for high-capacity industrial burners).   Here are the specific models and their technical details. 1. LMV Base Unit Models The model number identifies the burner complexity and fuel type it can handle. Model Series Fuel Type Complexity Key Features LMV26 Gas / Oil 2 Actuators Single fuel, electronic ratio control. LMV27 Gas / Oil 2 Actuators Integrated Gas Valve Proving (leak test). LMV36 Dual Fuel 2 Actuators Basic dual-fuel control. LMV37 Dual Fuel 3 Actuators Support for VFD (Variable Frequency Drive). LMV51 Dual Fuel 4 Actuators Industrial powerhouse; integrated PID load control. LMV52 Dual Fuel Up to 6 Actuators Support for $O_2$ Trim and Efficiency monitoring. 2. Technical Specifications (Base Units) Supply Voltage: 120V AC or 230 V AC (Suffix A1 = 120V, A2 = 230V. Frequency: 50- 60Hz}. Power Consumption: < 30VA}. Safety Level: SIL3 rated (highest safety standard for burners). Communication: Internal CAN bus for actuators; Modbus RTU for BMS integration. Ambient Temp: -20°C to +60°C. Mounting: DIN rail or screw mounting inside a control cabinet (IP00 rating). 3. Essential System Components The LMV base unit cannot function without these peripheral devices: A. User Interfaces (AZL) These are the screens used to program the fuel/air curves. AZL21: Small, icon-based display for LMV2/3. AZL23: Text-based display for LMV2/3. AZL52: High-resolution text display for LMV5 (supports graphics and trend logs). B. Actuators (SQM) These replace the mechanical linkages and rods. SQM33: Compact stepper motor (up to 3 Nm} torque). SQM85/91: Large industrial actuators (up to 60{ Nm} torque). Precision: 0.1° resolution for extremely tight combustion control. C. Detectors & Modules QRA / ION: Flame sensors (UV or Ionization). PLL52: The O2 Trim module (only for LMV52). 4. Performance Capabilities Curve Points: Allows for up to 15 individual points to be set for the air/fuel ratio across the burner's firing range (Low fire to High fire). VFD Control: The LMV37 and LMV5 series can control the combustion air fan speed via a 4- 20mA or 0-10textVsignal to save electricity. 5. Typical Suffix Meanings When ordering, pay attention to the end of the model string: .200: Standard version. .300: Version with extended functions (like FGR - Flue Gas Recirculation). A2: 230V operation.