Siemens LFS1.11A2

44 ซ.บรมราชชนนี 70 ถ.บรมราชชนนี ศาลาธรรมสพน์ ทวีวัฒนา กทม. 10170.
website: https://www.add-furnace.com/ โทร: 02-888-3472
Line ID: @add11 Wechat ID: add0883001122
7
782
Flame safeguard
LFS1...
Flame safeguard with approval for continuous operation for the supervision of oil
flames and gas flames in applications with an ionization probe and a photocell
detector RAR9.
Flame safeguard for intermittent operating mode with UV flame detectors QRA2 /
QRA2M / QRA4 / QRA4M / QRA10 / QRA10M.
LFS1 and this Data Sheet are intended for OEMs using the LFS1 in or on their
products.
Use, features
Use
LFS1 units are designed for the supervision of oil burners and gas burners in
combination with control unit LEC1, burner control LME39.xxxRP, or with
programmable logic controllers.
Typical fields of application range from industrial burners up to the highest security level
SIL3 and in the field of ship burners.
Flame supervision:
- Takes place with photocell detector RAR9 with approval for continuous
operation, in the case of LFS1.1 (firing on oil).
- Takes place with an ionization probe with approval for continuous operation or
with UV flame detector QRA2 / QRA2M / QRA4 / QRA4M / QRA10 / QRA10M in
intermittent operation, in the case of LFS1.2 (firing on gas).
Building Technologies
CC1N7782en
18.04.2018

Siemens LFS1.11A2 Specifications

General

Brand	Siemens
Model	LFS1.11A2
Category	Safety Equipment
Language	English

Summary

Flame Safeguard LFS1 Overview

Product Description and Features

Detailed description of the LFS1, its applications, and key capabilities.

Use and Flame Supervision

Explanation of the LFS1's intended use and flame supervision methods.

Documentation and Compliance

Application and Features Details

Further details on LFS1 usage, features, and flame supervision.

Safety and Certification

General Warning Notes

Critical safety warnings and precautions for handling and installation.

Standards and Certificates

Installation and Electrical Details

Mounting and Installation Guidelines

Instructions for physical mounting and installation procedures.

Electrical Connection of Flame Detectors

Design and Technical Features

LFS1 Design Features

Description of the LFS1's internal design and components.

Voltage Protection Features

Flame Supervision Methods

Ordering and Parameterization

Product Type Summary and Ordering

Lists LFS1 types, specifications, and ordering information.

Parameterization Guidelines

Connection Diagrams

LFS1.1 with RAR9 Wiring Diagram

LFS1.2 with QRA Detectors Wiring Diagram

LFS1.2 with QRA2 MQRA10 M Wiring Diagram

Operational Modes and Sequences

LFS1 Program Sequence Overview

Overview of the LFS1's operational program sequence and timings.

Operation with Control Unit LEC1

Describes LFS1 operation in conjunction with the LEC1 control unit.

Dual Supervision Mode of Operation

Explains the mode of operation for dual flame safeguard supervision.

2 Manual Burner Supervision

Details the operation for supervising two manually controlled burners.

Multiflame Supervision with LEC1

Describes multiflame supervision using the LEC1 control unit.

Multiflame Supervision with PLC (Intermittent)

Operation with a PLC for multiflame intermittent modes.

PLC Supervision with Pilot Burner (Intermittent)

Operation with a PLC for pilot burner and main burner supervision.

Operation, Indication, and Diagnostics

Visual Diagnostics and Indicators

Error Cause Diagnostics