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Flame supervision
Min. detector current required
at AC 230 V
Max. permissible detector
current with no flame
Max. detector current that can
occur
Instrument's +pole
Length of detector cable
In the same cable as the
control lines
Separate cable in cable duct
3-core cable
2-core cable for the detector
line (bl, sw); separate single-
core cable for the live con-
ductor (br)
Shielded cable (e.g. RG62,
shield insulated)
Shield
22
Siemens Building Technologies
HVAC Products
LAL1... with
QRB1...
QRC1...
95 µA
80 µA
12 µA
12 µA
160 µA
130 µA
To terminal
To terminal
23
23
Max. 30 m
---
Max. 1000 m
---
---
Max. 1 m
---
Max. 20 m
---
---
---
---
LAL1...
23
22
LAL4...
7153v01/0498
+
bl
sw
µA DC
QRB1...
QRC1...
LAL2... / LAL3... with
QRB1...
8 µA
0.8 µA
35 µA
To termi-
To terminal 22
nal 22
Not per-
mitted
20 m
RAR7...: 30 m
---
---
200 m
RAR8...: 100 m
To termi-
nal 23
LAL1...
23
1
22
LAL4...
br
7153v05/0498
+
µA DC
LAL4... with
RAR...
QRB1...
6,5 µA
95 µA
0.7 µA
12 µA
30 µA
160 µA
To terminal
23
---
Max. 30 m
Max. 1000 m
---
---
---
---
---
---
---
LAL2...
23
LAL3...
22
7153v02/0498
+
+
µA DC
QRB1...
RAR...
QRC1...
80 µA
12 µA
130 µA
To termi-
nal 23
---
---
Max. 1 m
Max. 20 m
---
---
LAL2...
24
LAL3...
7153v03/0498
µA DC
+
7/20
CC1N7153en
14.10.2002
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