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Use
Flame supervision
CC1N7786en
07.08.2013
Burner Controls
Burner controls
•
For use on industrial furnaces
•
For burners in continuous operation
•
Without fan control and air pressure supervision
•
Flame supervision
- with QRA53... / QRA55..., flame detector
- with ionizations probe
•
With self-supervising flame signal amplifier
•
Quick startup
•
1-stage operation with interrupted pilot burner or 2-stage operation
•
Common or separate ionization probe and ignition electrode (single- or
double-electrode operation)
•
Automatic restart (repetition) or lockout after loss of flame during operation
•
Indication of program sequence
•
Remote reset facility
•
Programming mechanism in plastic housing, plugs into the base
The LGI16... and this Data Sheet are intended for use by OEMs which integrate
the burner controls in their products.
Supervision and control of oil or gas burners for use on industrial furnaces that operate
continuously for longer periods of time (>24 hours) without controlled shutdown.
QRA53... / QRA55... flame detector
-
-
Ionization probe
-
QRA53... / QRA55... flame detector and ionization probe together, e.g. with burner
with ignition burner, refer also to Data Sheet N7712
Building Technologies Division
Infrastructure & Cities Sector
7
786
LGI16...
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Summary of Contents for Siemens LGI16 Series
- Page 1 LGI16... Burner Controls Burner controls • For use on industrial furnaces • For burners in continuous operation • Without fan control and air pressure supervision • Flame supervision - with QRA53... / QRA55…, flame detector - with ionizations probe • With self-supervising flame signal amplifier •...
- Page 2 Warning notes To avoid injury to persons, damage to property or the environment, the following warning notes must be observed! Do not open, interfere with or modify the unit! • All activities (mounting, installation and service work, etc.) must be performed by qualified staff •...
- Page 3 Electrical connection of flame detectors It is important to achieve practically disturbance-free signal transmission: • Never run the detector cable together with other cables – Line capacitance reduces the magnitude of the flame signal – Use a separate cable • Observe the permissible length of the detector cables (refer to «Technical data») •...
- Page 4 Service notes • UV detector current measuring unit KF8832 is not suited for continuous operation Life cycle Burner control have a designed lifetime* of 250,000 burner startup cycles which, under normal operating conditions in heating mode, correspond to approx. 10 years of usage (starting from the production date given on the type field).
- Page 5 Mechanical design • Plug-in design LGI16... • Exchangeable unit fuse (including spare fuse) • Impact-proof plastic housing • Synchronous drive motor • Lockout relay with electric, remote reset facility • Self-supervising electronic flame signal amplifier with flame relay • Program indication in the viewing window by means of disk on the spindle of the sequence switch (refer to «Control and function diagram»...
- Page 6 Technical data Mains voltage AC 220 V –15 %...AC 240 V +10 % General unit data AC 100 V –15 %...AC 110 V +10 % Mains frequency 50...60 Hz ±6 % Unit fuse, built-in T6,3H250, DIN EN 60 127 (5 x 20 mm) External primary fuse Max.
- Page 7 Technical data (cont'd) Environmental Storage DIN EN 60721-3-1 conditions Climatic conditions class 1K3 Mechanical conditions class 1M2 Temperature range -20...+60 °C Humidity <95 % r.h. Transport DIN EN 60 721-3-2 Climatic conditions class 2K2 Mechanical conditions class 2M2 Temperature range -40...+60 °C Humidity <95 % r.h.
- Page 8 Detector current measurement (cont'd) LGI16... / ionization The measuring device must be connected between terminal 24 and the detector probe electrode (+pole to terminal 24). With ionization DC 12...100 µA 7785v03/1008 Burner Burner control Terminals in Terminals in the the control panel burner compartment LGI16...
- Page 9 Function When power is supplied to the burner control and the control loop (terminals 4 and 5) is Program sequence closed, the LGI16… will start the program sequence as shown in «Control and function program», the most important program steps being the following: •...
- Page 10 Control and function diagram 1 2 21 23 15 QRA5... Caution! Do not press lockout reset button (EK...) for more than 10 seconds! Legend • Valid for expanding flame burner •• Valid for interrupted pilot burner Flame signal amplifier Programming mechanism Indication of program sequence in viewing window 5 s ¹...
- Page 11 Connection diagram and internal diagram LGI16... QRA5... 2) GPmin. a b a b XIII b a b a VIII A BR M SM Caution! Do not press lockout reset button (EK...) for more than 10 seconds! Legend • Valid for expanding flame burner ••...
- Page 12 Legend Start of program; control loop between terminals 4 and 5 closed A – B Startup program B – C Burner operation Controlled shutdown; control loop between terminals 4 and 5 open C – D Home run of programming mechanism Ready for restart Remote indication of lockout (alarm) Main relay (load relay) with contacts (ar)
- Page 13 Dimensions Dimensions in mm LGI16... Plug-in base AGM15 / AGM15.1 7786m04/0305 27,5 27,5 2013 Siemens AG Infrastructure & Cities Sector Building Technologies Products GmbH Subject to change! 13/13 Building Technologies Division CC1N7786en Infrastructure & Cities Sector 07.08.2013...
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