Siemens LMV51 Series Basic Documentation page 284
Burner control with integrated fuel / air ratio control and load control, load control including o2 trim control for forced draft burners
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- Basic documentation (157 pages) ,
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- Manual (39 pages)
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19.11.3 Direct entry of O
If the limit values of a plant are known, and if the CO limit need not be remeasured, the
O2 min. values can be entered directly.
P
o
i
n
t
O
2
-
M
i
P
-
A
i
r
On the first line, «Point», select the point number to be changed and confirm with Enter
(point 1 can be adjusted). With the second line, «O2 Min Value», the O2 min. value can
be directly parameterized. The points will only be approached if, previously, setting
choice «P-Air Man» has been used.
19.11.4 Measuring the O
On the first line, select the point number and confirm with Enter . Now, select line «P-Air
Man» and confirm. After confirmation with Enter , the ratio control system approaches
this point on the parameterized ratio curve, that is, air rate reduction «P-Air Man» will
be set to «0». The display on the second line changes to «Actual O
then be displayed.
P
o
i
n
t
A
c
t
O
2
P
-
A
i
r
By readjusting the air rate «P-Air Man», the amount of combustion air and thus the O2
value can be reduced. «P-Air Man» corresponds to the relative air rate reduction. Dur-
ing the readjustment, all actuators on the curve parameterized as air-influencing will
travel to the relevant positions. When the O
O
Value» will be entered as the «O
2
Basic Documentation LMV5...
19 Addendum 4: LMV52... with O2 trim control and O2 module
min. values
2
:
2
n
V
a
l
u
M
a
n
min. values by lowering the air rate
2
:
3
V
a
l
u
e
M
a
n
min. value is found, the measured «Actual
2
Min Value» by pressing Enter .
2
e
:
1
.
:
0
.
Value», which will
2
:
1
.
:
2
1
.
2
0
4
3
CC1P7550en
13.08.2004
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