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Siemens LMV51.000C2 User Manual

Siemens LMV51.000C2
327 pages
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Based on the following
software versions:
LMV50... : V10.30
LMV51... : V05.20
LMV51.3… : V05.20
LMV52.2.. : V05.20
LMV52.4... : V10.30
Int. LR module: V02.10
Int. VSD module: V01.50
AZL52...: V05.10
PLL52...: V01.50
CC1P7550en
22.05.2018
Building Technologies
LMV50… / LMV51... / LMV52…
Burner management system for forced draft
burners with the main functions:
- Burner control
- Fuel-air ration control
- Boiler controller / load controller
LMV50…
with specific functions for industrial applications
LMV52...
with additional O2 trim control
Basic Documentation
The LMV5 and this Basic Documentation are intended for OEMs which integrate
the burner controls in their products!

Table of Contents

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Siemens LMV51.000C2 Specifications

General IconGeneral
ManufacturerSiemens
Frequency50/60 Hz
Communication ProtocolModbus RTU
Operating Temperature-20 °C to +60 °C
Output SignalRelay outputs
Ambient Temperature-20...+60 °C

Summary

Safety notes

Warnings

General safety warnings and precautions for LMV5 operation and installation.

Mounting notes

Guidelines and regulations for safe and proper mounting of the LMV5 unit.

Installation notes

Electrical wiring, connection, and installation requirements according to national and local regulations.

Electrical connection of ionization probe and flame detector

Guidelines for disturbance-free signal transmission and safe electrical connection of probes.

Commissioning notes

Safety checks to be performed during commissioning and maintenance work.

Setting and parameterization notes

Important notes regarding parameter settings, burner identification, and software usage.

General

Burner control

Description of inputs and outputs

Details the basic characteristics of the burner control's inputs and outputs.

Flame signal input and flame detector

Information on available connection facilities for flame detection.

Self-test function LMV5 / QRI / QRA7

Description and graphical representation of the self-test function for flame detectors.

Separate flame supervision (only LMV50 / LMV52)

Configuration options for separate flame supervision using multiple detectors.

Standardization of flame signal display AZL5

Function and procedure for standardizing the flame signal display on the AZL5.

External flame supervision (LMV50 / LMV52)

How to perform flame supervision using an external approved flame safeguard.

High temperature supervision (only LMV50)

Supervision of combustion chamber wall temperature for high-temperature plants.

Safety loop / burner flange (X3-04 pin 1 / X3-03 pin 1)

Details on the safety loop input, its function, and typical contacts.

Manual lockout / reset

How to manually lock the system and reset lockout or alarm states.

External boiler controller ON/OFF = heat request (X5-03 pin 1)

Using an external controller signal for heat request input.

External boiler controller OPEN/CLOSED or STAGE2 / STAGE3 (X5-03 pin 2 / X5-03 pin 3)

Inputs for external controllers supporting stage/mode selection and their configuration.

Gas pressure switch - valve proving or valve closure contacts (X9-03 pin 2)

Input for gas valve proving (PS-VP) or closed position indicator (CPI).

Gas pressure switch-min (X9-03 pin 4)

Input for gas pressure switch-min, crucial for gas shortage detection.

Start release - gas / CPI (X7-03 pin 2)

Input for gas start release or CPI function, detailing configurations.

Gas pressure switch-max (X9-03 pin 3)

Input for gas pressure switch-max to monitor gas pressure limits.

Oil pressure switch-min (X5-01 pin 2)

Input for oil pressure switch-min, vital for monitoring oil pressure.

Oil pressure switch-max (X5- 02 pin 2)

Input for oil pressure switch-max to monitor oil pressure limits.

Ignition, type SI (X4-02)

Output for connecting ignition transformers or electronic igniters for gas and oil firing.

Parameters

Details on important time parameters for burner control sequences.

Time parameter

Lists key time parameters affecting the control sequence.

Reaction time for loss of flame / safety time in operation

Setting reaction time for flame loss and calculating safety time.

Gas valve proving

Function and steps for gas valve proving, ensuring safety during gas firing.

Lockout phase (phase 00) / safety phase (phase 01)

Describes the lockout and safety phases, including their characteristics and transitions.

Prepurging

Details on prepurge time determination and skipping prepurging.

Gas shortage program

How the system handles insufficient gas pressure with selectable start attempts.

Fuel-air ratio control (FARC)

Actuator addresses

Defines addresses and parameters for actuators like air, fuel, and auxiliary actuators.

Activating / deactivating the actuators

How to activate/deactivate actuators and define air influencing actuators for O2 trim.

Direction of rotation of the actuators

Setting the direction of rotation (standard/reversed) for actuators.

Control sequence

How program phases are controlled by the burner and fuel-air ratio system.

Startpoint operation

Bringing actuators to ratio control positions after ignition for high modulation range.

Approaching low fire in phase 50 / 54

Specifying actuator behavior for approaching low fire in phases 50 or 54.

Actuator speed in normal operation = OperatRampMod

Setting actuator speed for modulating operation with defined ratio control curves.

Multistage operation

Configuring multistage operation for oil firing, defining load points.

Position check, dynamic safety time

Definition and implementation of safety time for fuel-air ratio control actuator positions.

Limitation of load range

Defining burner's working range by limiting low-fire and nominal load.

Overload protection

How actuators are deactivated to prevent damage from overtemperatures.

Boiler controller / load controller

Operating modes load controller

How the LMV5 can operate with internal, external, or BACS load controllers.

Operating mode 1 (ExtLC X5-03)

Using an external load controller (e.g., RWF5) with contact outputs.

Operating mode 2 (intLC)

Using the internal load controller of the LMV5 for standard applications.

Operating mode 3 (int LC bus)

BACS control via bus with internal load controller and external interface.

Operating mode 4 (int LC X62)

BACS control via analog input with internal load controller.

Operating mode 5 (Ext LC X62)

Translating analog load signal to CAN bus protocol for external control.

Operating mode 6 (Ext LC bus)

BACS control with digital predefined load via bus.

Manual / automatic burner startup

Defining burner operation mode as manual or automatic startup.

Control (characteristics)

Load controller operation modes: modulating or multistage.

Modulating control

How LMV5 operates in modulating mode for gas and oil, PID algorithm use.

Manual setting of the PID control parameters

Manually setting PID parameters (P, I, D) or using adaption function.

Adaption / self-setting of PID controller parameters

How the load controller identifies the system and calculates PID parameters.

Multistage control

Configuring multistage operation for oil firing based on reaction thresholds.

Integrated temperature limiter function

Safety-related function to limit temperature, working like a 2-position controller.

Cold start thermal shock protection – modulating operation

How output steps are predefined for modulating operation.

Cold start thermal shock protection – multistage operation

Output steps defined by burner stages for multistage control.

Display and operating unit AZL5

Assignment of AZL5 terminals

Details the pin assignments for AZL5 interfaces: CAN, COM1 (PC), COM2 (BACS).

Lockout and error messages

Displays for safety phase, lockout, and examples of lockout/error history messages.

Standard parameterizations (inclusive entry of password)

Procedure for selecting main menu items and changing standard parameters.

Entry of password (PW)

Process for entering passwords to access parameter settings.

Addressing / function assignment of actuators

Procedure for addressing actuators and defining their addresses and functions.

Setting the fuel-air ratio control curves

Overview of setting fuel-air ratio control curves through selection menus.

Adjusting the curves by introducing or editing an individual point

Step-by-step guide to editing curvepoints, including adding or deleting them.

Curve setting via manual operation

Adjusting burner curves manually with optional point storage.

Adaption of the load controller's PID parameters

Sequence steps for starting the PID parameter adaption process.

Burner identification / backup - restore

Storing burner ID for data transfer and backup/restore operations.

TÜV test

Performing loss-of-flame and safety limit thermostat tests, caution notes included.

Commissioning instructions for the LMV5

Basic configuration

Initial configuration steps including burner identification and fuel train selection.

Addressing the actuators

Procedure for addressing actuators and selecting their types.

LMV50/LMV51. activating and deactivating the actuators

Activating/deactivating auxiliary actuators and VSD for fuel type and application.

Settings for gas-fired operation

Setting fuel-air ratio control system for gas-fired operation, including program stops.

Checking and presetting the actuator positions for gas ignition

Checking and adapting actuator positions for gas ignition.

Setting the curve

Manually adjusting burner output and curve settings to rated capacity.

Creating a new curvepoint

Steps to create a new curvepoint using manual operation and actuator optimization.

Checking and presetting the ignition positions for firing on oil

Checking and adapting ignition positions for oil firing.

Ignition positions

Setting and verifying ignition positions for actuators after burner control stops in phase 36.

Setting the burner stages

Changing actuator positions at ignition load or first burner stage.

Extra functions of the LMV5

Valve leak test (valve proving)

Function for detecting leakage rates during valve proving.

Commissioning instructions for the LMV5

Configuring the load controller

Configuring operating modes and sensor inputs for the load controller.

Control parameters of the load controller

Defining control parameters via standard sets, individual settings, or automatic adaption.

Automatic adaption

Acquiring system data for automatic PID parameter calculation.

Temperature limiter function

Configuration of the integrated temperature limiter function.

Cold start thermal shock protection (CSTP)

Activation and deactivation of thermal shock protection for modulating and multistage control.

Mounting , electrical installation and service

Installation

Requirements for IP40 protection, ambient temperature, unit mounting, and condensation.

Electrical connections and wiring

Guidelines for wiring, separation of low-voltage, protection against shock, and cable types.

Power supply to the LMV5

How the LMV5 is powered via transformer AGG5.2 and bus topology considerations.

Duties of the authorized inspector

Correct parameterization of the system

Documenting fuel-air ratio control and O2 trim control parameters.

Fuel-air ratio control system

Importance of setting values for actuators, fuel, and air for correct operation.

O2 trim control (only with LMV52 system)

Overview of LMV52's O2 trim control features and operating modes.

Technical data

LMV5 and AZL5

Technical specifications for LMV5 and AZL5, including mains voltage and safety class.

VSD module

VSD module

General information and function of the VSD module.

Inputs / outputs

Details on VSD module inputs and outputs, including release and alarm contacts.

Configuring the VSD

Configuring the VSD based on connected motor type and ramps.

Configuring speed acquisition

Selecting and parameterizing speed sensors for motor speed acquisition.

Speed standardization

Automatic measurement function for standardizing motor speed.

Configuring the fuel meter

Parameterizing fuel meters for volume units and throughput.

O2 trim control with LMV52 and PLL52

General

Overview of LMV52 features including O2 trim control, actuators, VSD, and fuel throughput.

Functioning principle of O2 trim control

How residual O2 control reduces combustion air based on control deviation.

Precontrol

How precontrol calculates air rate reduction based on learned burner behavior.

O2 trim control

Overview of operating modes for O2 trim controller and O2 alarm.

Operating modes of O2 trim controller / O2 alarm

Deactivating or activating O2 trim controller/alarm via parameter settings.

Burner start mode for O2 trim control (only LMV52.4, only in operating modes O2 Control and conAutoDeac)

Special startup modes for burners with metal mesh for O2 controller operation.

Initializing and release of the O2 trim controller

How the LMV52 initializes and releases the O2 trim controller.

Limiting the O2 trim controller manipulated variable with shutdown

Setting min/max values for O2 trim controller manipulated variable with shutdown.

Deactivating O2 trim control via a contact

Two methods to deactivate O2 trim control via mains voltage signal at input X5-03 pin 2.

O2 alarm

Using O2 alarm with or without O2 trim control, defining minimum and maximum values.

Switch-off criteria of the O2 alarm

Criteria for O2 minimum and maximum value alarms and system reactions.

O2 Sensor test

Detecting aged QGO20 sensors by measuring internal resistance.

PLL52 O2 module

Connecting PLL52 and QGO20 for residual oxygen control on LMV52.

Configuring the PLL52

Configuring connected sensors via AZL5, including QGO20 and temperature sensors.

Configuring the system

Making plant-dependent basic configurations, including actuators and VSDs.

Actuators / VSDs

Activating/deactivating actuators and VSDs, defining air influencing actuators for O2 trim.

Commissioning the O2 trim control system

Steps for commissioning the O2 trim control system.

Setting fuel-air ratio control

Adjusting ratio control curves and ensuring sufficient excess O2.

Setting the O2 alarm

Adjusting O2 alarm, initially deactivated for safety.

Setting O2 trim control

Setting O2 trim controller, ensuring ratio control curves and loads are correctly set.

Setting fuel-air ratio control

Setting excess O2 on ratio control curve for various environmental conditions.

Flue gas recirculation (FGR) function (LMV50/LMV51.3/LMV52)

Function principle of flue gas recirculation (FGR)

How FGR reduces NOx by feeding flue gas back to combustion chamber.

Parameter for the flue gas recirculation (FGR) function

Defines the way auxiliary actuator 3 is driven based on FGR mode.

Setting electronic fuel-air ratio control in connection with flue gas recirculation (FGR)

Setting electronic fuel-air ratio control with FGR in Time or Temperature mode.

Settings in Time or Temperature mode (without temperature compensation)

Setting fuel-air ratio control curves without FGR influence.

Settings in temperature-compensated mode (only LMV52.4)

Setting FGR curves with temperature compensation for LMV52.4.

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