EasyManua.ls Logo

Siemens LME21.130A2 User Manual

Siemens LME21.130A2
25 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
Page #1 background imageLoading...
Page #1 background image
CC1N7101en
27.11.2008
Building Technologies
HVAC Products
7
101
Burner Controls LME...
Burner controls for the supervision of 1- or 2-stage gas or gas / oil burners of
small to medium capacity, operation, with or without fan in intermittent.
The LME… and this Data Sheet are intended for use by OEMs which integrate the
burner controls in their products.
Use, features
LME… burner controls are used for the startup and supervision of 1- or 2-stage gas or
gas / oil burners in intermittent operation. The flame is supervised by an ionization
probe or flame detector QRA… with ancillary unit AGQ3…A27 for gas / oil forced draft
burners or blue–burning flames with blue-flame detectors QRC...
In terms of housing dimensions, the LME... are identical with the LGB… and LMG…
burner controls (refer to «Type summary»).
- For gas burners with or without fan to EN 298: 2003
- For gas burners with fans conforming to EN 676
- For oil burners to EN 230: 2005
- Undervoltage detection
- Air pressure supervision with functional check of the air pressure switch during
startup and operation
- Electrical remote reset facility
- Multicolor indication of fault status and operational status messages
- Limitation of the number of repetitions
- Accurate control sequence thanks to digital signal handling
- Controlled intermittent operation after 24 hours of continuous operation
Supplementary documentation
Product Range Overview LME…............................................................................ Q7101
Use
Features
Question and Answer IconNeed help?

Do you have a question about the Siemens LME21.130A2 and is the answer not in the manual?

Siemens LME21.130A2 Specifications

General IconGeneral
BrandSiemens
ModelLME21.130A2
Frequency50/60 Hz
Number of Inputs1
Number of Outputs1
Mounting typeDIN rail
Protection degreeIP20
Temperature Range-25 to +60 °C
Trip class10

Summary

Burner Controls

Warning notes

Installation notes

Electrical connection of flame detectors

Guidance on achieving disturbance- and loss-free signal transmission for flame detectors, including cable routing and insulation.

Commissioning notes

Safety check to be carried out

Details safety checks required during commissioning and maintenance, including burner startup and simulated failures.

Life cycle

Indication and diagnostics

Explains multicolor LED indication for status and faults, and transmission of diagnostics via OCI400/ACS410.

Technical data

Technical data (cont'd)

Flame supervision with ionization probe

Details detector voltage, switching thresholds, detector current, and short-circuit current for flame supervision using an ionization probe.

Flame supervision with AGQ3...A27 and UV detector QRA...

Details specifications for flame supervision using UV detector QRA... and ancillary unit AGQ3...A27.

Flame supervision with QRC... (only LME23...)

Details detector current requirements and indications for flame supervision with QRC... blue flame detector on LME23... models.

Functions

Preconditions for burner startup

Lists required conditions for burner startup, including burner control reset, contact closure, no undervoltage, and flame detector state.

Undervoltage

Describes shutdown and restart behavior based on mains voltage levels for LME41... and LME44... models.

Reversed polarity protection with ionization

Details the lockout behavior when live and neutral conductors are mixed up for ionization probe.

Functions (cont'd)

Control sequence in the event of fault

Details the response to various fault causes like mains failure, undervoltage, extraneous light, and loss of flame.

Resetting the burner control

Explains how to reset the burner control after a lockout condition using the lockout reset button.

Limitation of repetitions (only LME11..., LME41.051...)

Describes the limitation of flame establishment repetitions (max 3) before lockout for specific LME models.

Operation, indication, diagnostics

Operational status indication

Explains the use of the multicolor signal lamp (LED) for visual diagnostics and status indication.

Operation, indication, diagnostics (cont'd)

Diagnostics of the cause of fault

Explains how to activate visual and interface diagnostics using the lockout reset button and interpret error codes from LED blinks.

Connection diagram and control sequence LME11...

Connection diagram and control sequence LME21...

Connection diagram and control sequence LME22... / LME23...

Connection diagram and control sequence LME41...

Connection diagram and control sequence LME44...

Related product manuals