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Building Technologies
Basic Documentation LMV5...
CC1P7550en
8 Display and operating unit AZL5
22.05.2018
8.3.6.3 Setting modulating ratio control
Refer to selection menu
Setti ngs G as
8.3.6.4 Setting multistage ratio control
With multistage fuel-air ratio control, the position values can be changed in 2 different
ways:
1. Presetting the positions with no response by the actuators to fine-adjust the points
later using
followed
.
2. Setting the switching and operating positions from «below» using
followed
. This
means that stage 1 must be adjusted first, followed by the next switching on point,
etc.
A
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a
t
o
r
§
P
o
s
i
t
i
o
n
s
F
o
l
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o
w
e
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N
o
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f
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When the switch on/off and operating positions have been parameterized with
not
followed
, the values can be changed. The system maintains its current load stage.
The menu offers the choice of
followed
or
not followed
.
The display is maintained while the settings are made.
When accessing the menu, the operating positions
Stage 1
appear.
By pressing the
Selection
buttons, the entered positions of all switching and operating
points can be viewed.
This has no impact on the system, even if
followed
was selected:
If
followed
is selected, parameterization is made as follows:
P
o
i
n
t
I
A
i
r
:
2
8
.
5
:
B
S
1
I
A
u
x
1
:
2
8
.
4
O
2
I
:
4
.
3
I
:
S e t t i n g m u l t i s t a g e f u e l - a i r r a t i o c o n t r o l
f o l l o w e d
The startup is made similar to modulating operation, including automatic entry of the
ignition positions in the operating positions
Stage 1
, if these still display invalid values
(showing via XXX.X as a value).
P
o
i
n
t
I
A
i
r
:
2
8
.
5
:
B
S
1
I
A
u
x
1
:
2
8
.
4
O
2
I
:
4
.
3
I
:
For fine adjustment of that point, confirm by pressing
Enter
.
P
o
i
n
t
I
A
i
r
:
2
8
.
5
:
B
S
1
I
A
u
x
1
:
2
8
.
4
O
2
I
:
4
.
3
I
:
This causes output stage 1 to be approached. Here, the actuator to be adjusted can be
selected. Again, confirm by pressing
Enter
.
P
o
i
n
t
I
A
i
r
:
2
8
.
5
:
B
S
1
I
A
u
x
1
:
2
8
.
4
O
2
I
:
4
.
3
I
:
