Siemens LAE10 Quick Guide

Landis & Staefa Division CC1N7781E June 01, 1999 3/8
– UV detector QRA... (refer to data sheet 7712)
– Selenium photocell detectors RAR7 and RAR8 (refer to data sheet 7713)
– Flame rectification probe
Flame supervision by making use of the electrical conductivity of the flame in
conjunction with the rectifying effect is only possible with gas and blue-flame
burners.
Since the flame signal amplifier responds only to the d.c. component of the flame
signal (ionization current), a short-circuit across the detector electrodes cannot
simulate a flame signal.
CE conformity Mains voltageAC 220 V -15 %...AC 240 V +10 %
According to the directives of the European Union AC 100 V -15 %...AC 110 V +10 %
Electromagnetic compatibility EMC
89 / 336 EEC incl. 92 / 31 EEC Mains frequency 50...60 Hz ±6 %
Directive for gas appliances 90 / 396 EEC
Low voltage directive 73 / 23 EEC Prefuse (external) max. 10 A (slow)
Environmental conditions Power consumption 4.5 VA
Transport IEC 721-3-2
Climatic conditions class 2K2 Max. contact rating 2 A
Temperature range -20...+60 °C
Humidity < 95 % r.h. Degree of protection IP 40
Mechanical conditions class 2M2 provided cable entry is in
Operation IEC 721-3-3 compliance with IP 40
Climatic conditions class 3K5
Temperature range -20...+60 °C Mounting orientation optional
Humidity < 95 % r.h.
Condensation, formation of ice and ingress
of water are not permitted!
LAE10 LFE10
Weight without plug-in base 305 g 395 g
Weight with normal plug-in base 380 g 470 g
Weight with high plug-in base 415 g 505 g
Flame supervision Series 02
LFE10 LFE10 LAE10
Rectification probe UV detector Selenium cell
Required min. detector current in µA
- At AC 100 V and AC 220 V min. 8 150 8
- At AC 110 V and AC 240 V min. 9 200 8
Max. possible detector current in µA
- At AC 100...110 V and AC 220...240 V approx. 100 approx. 650 approx. 25
Perm. length of connecting cables 20 m ¹) 20 m ¹) 20 m ²)
¹) In case of greater distances, use low-capacitance cable (total max. 2 nF), such as single-core RG62
²) Run detector cables separately, at least 5 cm away from other cables and, in case of greater distances, use
selenium photocell detector RAR8
A
C
FE
M
QRA...
Illumination of flame
Electrolytic capacitor 100 µF, DC 10 V
Detector electrode
Microammeter
UV detector
Ignition may affect the ionization current!
Remedy: exchange the connections on the primary side of the ignition transformer
Flame detectors
Technical data
Measurement circuits
FE
M
+-
LFE10
810
QRA...
A
M
+-
LFE10
109
C
-
+
A
M
+-
910
LAE10
77 81a 07 / 119 8
-
+
+

Siemens LAE10 Specifications

General

Brand	Siemens
Model	LAE10
Category	Security Sensors
Language	English