Cung Cấp Flame Safeguard Siemens Lfs1.11A2

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 p******ocell 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).
Use
2/40
Building Technologies CC1N7782en
18.04.2018
Use, features
The flame detectors are used in conjunction with control unit LEC1 or with freely
programmable controllers in the following applications:
- Dual supervision of burners / supervision of the main flame or of the ignition and
main flame by 2 flame safeguards with the same or different flame detectors
- Multiflame supervision / plants with several burners whose flames must be
supervised individually by one or several flame detectors, but whose startup and
supervision is carried out centrally and simultaneously by only one control unit
- The flame safeguards are also used as flame indication units in combustion
plants with manual startup
- Flame signal display via multicolor LED signal lamp
- Flame signal display via DC 0...10 V output signal (display only)
- Can be parameterized via BCI communication interface
- Potential-free signal contacts with double insulation
- Undervoltage detection
Supplementary documentation
ASN Title Documentation
number
Document type
LEC1 Control unit CC1N7761 Data Sheet
AGK11.7 Connection accessories for small
burner controls CC1N7201 Data Sheet
AZL21 / AZL23 Display and operating units CC1N7542 Data Sheet
LFS1 Flame safeguard CC1A7782 User documentation
ACS410
PC software for microprocessor
controlled burner controls and
flame safeguards
CC1J7352 Installation and Operating
Instructions
OCI410 BCI interface between flame
safeguard and PC CC1N7616 Data Sheet
QRA4 / QRA4M UV flame detector CC1N7711 Data Sheet
QRA2 / QRA2M
QRA10 / QRA10M UV flame detector CC1N7712 Data Sheet
RAR9 P******ocell detector CC1N7713 Data Sheet

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