Siemens LFE1 Series - Page 15

15/19
Building Technologies CC1N7461en
21.08.2018
Connection examples and sequence diagrams
Actuator control by the LFE1...
No load control.
When using UV flame detector QRA..., terminal 13 must be connected to earth.
LFE1
1 2
13
14
15
16
12
19
18 8 9 4
3
22
21
20
17 6 5 7 11
P (R)
c1
e1
M
M1 M2
M
c2
e2
H
SB
N (Mp)
ION
+
LF
EK2
L2
LP
P
c1
T
W
R1
GP
P
T
e1
c1
1
2 11
N
LK
a
z
M
d1
e2
c2
Z
GV1
GV2
GV3
d1
d1
7461a03/0207
Luft
Gas
M
LK
GV3
GV2
GV1
7461a04/1196
A
B
C
D
E
22
21
21/d1
18/c1/d1
20
LK "a"
LK "z"
t11 t1 t12 t11 tn t6 t12
7461a05/0301
Air damper control (detailed).
Attention!
In the case of burners with no air damper or with an air damper not controlled
by the burner control, terminals 20, 21 and 22 must be interconnected and
circuit path 18-c1-21 becomes obsolete.
L2
A B C
D
E F G H
I
K
L
t8
tn t6 t6
t7
t7
t11 t1
t12 t1
TSA
t3
t4
t5
TSA
t3
t4
t5
Kl. 3
17
22/21
6
5
7
11
13/14
13/15
12
M1
M2
LK
Z
GV1
GV2
GV3
FW
7461a06/0301
Connection examples
for expanding flame
burners