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Siemens LMO24.111C2 User Manual

Siemens LMO24.111C2
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CC1N7130en
22.08.2013
Building Technologies Division
Infrastructure & Cities Sector
7
130
Oil Burner Controls
LMO14...
LMO24...
LMO44...
Microcontroller-based oil burner controls for the startup, supervision and control
of forced draft oil burners in intermittent operation. Standard versions with an oil
throughput up to 30 kg / h, special versions above 30 kg / h.
The LMO14..., LMO24..., LMO44... and this Data Sheet are intended for use by
OEMs which integrate the burner controls in their products.
Use, features
The LMO... are designed for the startup and supervision of 1- or 2-stage forced draft oil
burners in intermittent operation. Yellow-burning flames are supervised with photo
resistive detectors QRB..., blue-burning flames with blue-flame detectors QRC...
In terms of housing dimensions, electrical connections and flame detectors, the LMO...
are identical with the LOA... oil burner controls.
- Oil burners with fans to EN 267
- Burner controls for use with atomization oil burners of monoblock design to
DIN EN 230:2005-10
- LMO44... for use with stationary direct-fired air heaters
- Undervoltage detection
- Electrical remote reset
- Bridging contact for oil preheater
- Monitoring of time for oil preheater
- Accurate and reproducible control sequence thanks to digital signal handling
- Controlled intermittent operation after 24 hours of continuous operation
- Limitation of the number of repetitions
- Multicolor indication of fault status and operational status messages
Use
General features
Distribuitor: FLAME POWER SRL 021-3121727 ; 0744-340566 contact@arzatoare.ro ; www.arzatoare.ro
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Siemens LMO24.111C2 Specifications

General IconGeneral
BrandSiemens
ModelLMO24.111C2
CategoryControl Unit
LanguageEnglish

Summary

Use and General Features

Application of LMO Controls

Describes the intended use of LMO burner controls for startup and supervision of oil burners.

Key General Features

Lists essential features like EN 267 compliance, monoblock design, and digital signal handling.

Safety and Installation Guidelines

General Safety Precautions

Critical warnings on unit modification, qualified staff, electrical isolation, and shock hazards.

Mounting and Installation Notes

Guidelines for proper mounting, installation, wiring, and compliance with electrical regulations.

Flame Detector Wiring

Best practices for wiring flame detectors to ensure reliable signal transmission.

Commissioning Notes

Commissioning Safety Checks

Safety checks for burner startup, detector function, and simulated flame loss.

Standards and Certificates

EEC Directives and ISO Certifications

Compliance with EEC directives, ISO standards, and EN 230 identification codes.

Service Notes

Service Adapter Usage

Proper use of service adapters KF8885, KF8833, KF8840 for burner control diagnostics.

Life Cycle

Designed Lifetime

Details the designed lifetime of burner controls in startup cycles and operational years.

Disposal Notes

Electronic Component Disposal

Instructions for disposing of electronic components according to local legislation.

Mechanical Design and Type Summary

Housing Features and Internal Components

Describes the impact-proof housing and internal components like microcontroller and signal lamp.

Indication and Diagnostics Features

Covers multicolor status indication and data transmission for diagnostics.

LMO Series Type Comparison

Compares LMO series types, voltage, capacity, reset, and LOA equivalents.

Ordering Information

Burner Controls and Accessories

Lists oil burner controls, connection accessories, and flame detectors.

Interface and Software Options

Details interface OC1400, PC software ACS400/ACS410, and demo cases.

Test Adapters and Lockout Reset Extensions

Information on test adapters KF8885/KF8833/KF8840 and lockout reset button extensions.

Technical Data

General Unit Specifications

Provides mains voltage, frequency, power consumption, weight, and safety class.

Environmental Conditions

Specifies storage, transport, and operation conditions for temperature and humidity.

Permissible Currents and Cable Lengths

Lists permissible currents for terminals and maximum cable lengths for detectors.

Flame Supervision and Measurement

Detector Current Specifications

Details detector current requirements and permissible values for QRB and QRC detectors.

Operational Status Indication

Explains the meaning of green LED status indications for flame signal stability.

Detector Current Measurement Circuit

Illustrates the measurement circuit for detector current using QRB and QRC detectors.

Function and Control Sequence

Preconditions for Startup

Lists conditions like reset, closed contacts, and no undervoltage for burner startup.

Undervoltage Protection

Describes safety shutdown on low mains voltage and restart on voltage recovery.

Controlled Intermittent Operation and Fault Handling

Explains automatic shutdown after 24 hours and fault handling including lockout reset.

Limitation of Repetitions

Details the maximum number of repetitions allowed for flame loss during operation.

Operation, Display, and Diagnostics

Key Operating Elements

Identifies the lockout reset button (EK) and multicolor signal lamp (LED) for operation and diagnostics.

Diagnostic Choices

Outlines visual diagnostics and interface diagnostics using OCI400/PC software.

Operational Status Indication

Explains the color code table for the multicolor signal lamp indicating operating states.

Fault Diagnostics

Activating Visual Diagnostics

How to activate visual diagnostics by pressing the lockout reset button for over 3 seconds.

Error Code Table

Lists red blink codes for the signal lamp and corresponding possible causes of fault.

Quitting Fault Diagnostics

Procedure to quit fault diagnostics and restart the burner by resetting the control.

Connection Diagrams and Control Sequences

LMO14 Connection and Control Sequence

Provides internal diagram, connection diagram, and control sequence for LMO14 series.

LMO24 Connection and Control Sequence

Shows internal diagram, connection diagram, and control sequence for LMO24 series.

LMO44 Connection and Control Sequence

Details internal diagram, connection diagram, and control sequence for LMO44 series.

Legend and Symbols

Component and Signal Legend

Defines abbreviations for components (AL, BV, EK, FS, etc.) and signals.

Control Sequence Legend

Explains symbols and notations used in the control sequence diagrams (A, B, C, D, timings).

Dimensions

LMO Unit Dimensions

Provides overall dimensions of the LMO burner control unit in millimeters.

Plug-in Base and Reset Button Extension Dimensions

Shows dimensions for the AGK11 plug-in base and AGK20 lockout reset button extensions.

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