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Siemens LMV5 Series Burner Management Controls

Siemens LMV5 Series Burner Management Controls

Siemens
Siemens LMV5 Series is an advanced microprocessor-based burner management system for medium- to high-capacity industrial gas and oil forced-draft burners. It combines burner sequencing, flame supervision, electronic fuel-air ratio control, gas valve proving, and load control in an integrated platform. The LMV50, LMV51, and LMV52 families offer model-specific actuator control, PID load control, and optional VSD functionality. LMV52 additionally supports oxygen trim control with the PLL52 module and QGO20 oxygen sensor. Suitable for industrial boilers, combustion equipment, and process heating systems.

Product Description

Siemens Burner Controls LMV5 Series

Siemens LMV5 Series is a microprocessor-based burner management system developed for the control, monitoring, and safety supervision of medium- to high-capacity industrial forced-draft burners operating on gas or oil.

The LMV5 platform integrates burner sequencing, ignition control, flame supervision, electronic fuel-air ratio control, and gas valve proving. Depending on the selected model, integrated PID load control and variable-speed fan control are available to support industrial combustion management.

The product family includes LMV50, LMV51, and LMV52. LMV52 offers oxygen trim control when used with compatible Siemens PLL52 and QGO20 components.

Key Features

  • Microprocessor-based burner management and sequence control
  • Integrated flame supervision and burner safety functions
  • Electronic fuel-air ratio control for gas and oil burners
  • Integrated gas valve proving system
  • Model-dependent PID temperature or pressure load control
  • Variable Speed Drive (VSD) functionality on supported models
  • Oxygen trim control with LMV52, PLL52 and QGO20
  • Configuration and operation using AZL52 or Siemens ACS450 software
  • System communication bus for compatible Siemens components

Siemens LMV5 Series Models

Model Description
LMV50 Industrial burner management system with integrated electronic fuel-air ratio and load control. Supports up to 5 actuators, depending on configuration.
LMV51 Burner management system with electronic fuel-air ratio control. Load control, VSD and actuator capacity depend on the model variant.
LMV52 Burner management system with electronic fuel-air ratio control, load control and oxygen trim capability. Supports up to 6 actuators.

Compatible System Components

  • AZL52 Display and Operating Unit
  • SQM45 / SQM48 / SQM9x Actuators
  • QRI2 / QRA Flame Detectors
  • QRB1 / QRB3 Flame Detectors
  • PLL52 Oxygen Control Module for LMV52
  • QGO20 Oxygen Sensor for LMV52
  • Siemens ACS450 PC Software

Compatibility and available features depend on the individual model, software version and burner configuration.

Industrial Applications

  • Industrial steam and hot water boilers
  • Industrial gas and oil burner systems
  • Industrial process heating equipment
  • Medium- to high-capacity forced-draft burners
  • Combustion systems requiring electronic fuel-air ratio control
  • Applications requiring oxygen trim control with LMV52

Product Selection Guidelines

Select the appropriate LMV5 controller according to supply voltage, fuel type, burner operating sequence, actuator quantity, flame detector compatibility, load control requirements and optional oxygen trim functions.

Important: Installation, commissioning and safety-related parameterization must be performed by qualified personnel following Siemens technical documentation and applicable safety requirements.

Specifications

Siemens LMV5 Series Technical Specifications

Brand Siemens
Series LMV5 Series
Product Type Burner Management System
Models LMV50 / LMV51 / LMV52
Control Technology Microprocessor-based
Burner Type Medium- to High-Capacity Forced-Draft Burners
Fuel Type Gas / Oil
Supply Voltage AC 120 V or AC 230 V (-15% / +10%), depending on model
Mains Frequency 50 / 60 Hz ±6%
Power Consumption <30 W (Typical)
Fuel/Air Ratio Control Electronic
Load Control Model-dependent integrated load control
Gas Valve Proving Integrated
PID Control Temperature or Pressure Control on supported models
Oxygen Trim Control Available with LMV52 using PLL52 and QGO20
Actuator Control LMV50: Up to 5 actuators
LMV51: Up to 4 or 5 actuators depending on model
LMV52: Up to 6 actuators
When VSD is activated on applicable 5-actuator models, up to 4 actuators can be controlled
Compatible Actuators SQM45 / SQM48 / SQM9x
Display and Operating Unit AZL52
PC Software ACS450
System Communication System-bound communication bus
Housing Protection IP00; IP40 must be ensured through appropriate installation
Applicable Standards DIN EN 298, DIN EN 1643, DIN EN 12067-2, DIN EN 13611, ISO 23552-1, DIN EN 60730-2-5
Reference Document Siemens Datasheet CC1N7550en (08.06.2025)

Model Comparison Table

Model Supply Voltage Maximum Actuators Oxygen Trim
LMV50.320E2 AC 230 V 5* No
LMV51.000E2 AC 230 V 4 No
LMV51.100E2 AC 230 V 4 No
LMV51.300E2 AC 230 V 5* No
LMV52.200E2 AC 230 V 6 Yes, with compatible components
LMV52.400E2 AC 230 V 6 Yes, with compatible components

Note: *For the applicable 5-actuator models, activation of the VSD module limits actuator control to 4. Technical specifications and available functions vary by model and system configuration. Refer to Siemens CC1N7550en before ordering or installation.