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Building Technologies
Basic Documentation LMV5...
CC1P7550en
8 Display and operating unit AZL5
22.05.2018
8.3.6 Setting the fuel-air ratio control curves
The following chapter deals with the parameterization of the
Fuel-air ratio control
.
S e l e c t i o n m e n u
R a t i o c o n t r o l
The selection menu looks as follows:
G
a
s
S
e
t
t
i
n
g
s
1)
O
i
l
S
e
t
t
i
n
g
s
2)
A
u
t
o
m
/
M
a
n
u
a
l
/
O
f
f
3)
T
i
m
e
s
4)
N
u
m
F
u
e
l
A
c
t
u
a
t
o
r
s
5)
S
h
u
t
d
o
w
n
B
e
h
a
v
6)
P
r
o
g
r
a
m
S
t
o
p
7)
The selection of 3) through 7) leads to standard parameterizations of the specified
parameters.
The selection of 1) leads to:
S e l e c t i o n m e n u
S e t t i n g s G a s
Only the data associated with the currently active type of fuel can be parameterized.
S
p
e
c
i
a
l
P
o
s
i
t
i
o
n
s
1)
C
u
r
v
e
P
a
r
a
m
s
2)
L
o
a
d
L
i
m
i
t
s
3)
L
o
a
d
m
a
s
k
o
u
t
4)
A
u
x
A
c
t
u
a
t
o
r
5)
Calling up 1) (
HomePos..., PrepurgePositions
...), 3) through 5) leads to standard
parameterizations of the specified parameters.
Selection of 2) leads to:
S e l e c t i o n m e n u
C u r v e P a r a m
( m o d u l a t i n g )
P
o
i
n
t
|
L
o
a
d
:
2
3
.
2
:
1
|
F
u
e
l
:
2
3
.
2
M
a
n
|
A
i
r
:
4
1
.
6
|
A
u
x
:
3
3
.
3
I
A
u
x
2
:
2
9
.
2
only LMV52
I
A
u
x
3
:
1
3
.
8
LMV50/LMV51.3/
LMV52
I
V
S
D
:
4
5
.
0
LMV50/LMV51.3/
LMV52
In this example, the ignition positions are copied to the first point of the curve. This is
always made automatically when the ignition positions are defined but no point on the
curve has as yet been entered. The preliminary load value entered is the position value
of the fuel actuator. This point is also automatically approached as the low-fire point. If
the installer attempts to reach submenu
CurveParams
before the ignition positions are
defined, point number «1» appears.
But the position fields display «XXXX», indicating that the data are
invalid
. When
making the parameter settings, the installer is guided, starting with entry of the ignition
positions and coarse adjustment of the low- and high-fire positions to fine adjustment of
the curve settings with up to 15 curvepoints.
