Lumina 38
Explanation control functions
6
The control computer determines the use of air inlets, extra inlets and fans based on the combi-table. Below is an
example of a combi-table. This may differ to your own combi-table, for example, because you use a different
number of extra fans. The combi-table shows the required values at successive positions (M1 thru M10 in the
example). The relay fans will do 20.000 m3 each and the controllable part is 25.000 m3.
M/MT-
phase
Exhaust
Inlets
Ctrl.
Mod.
Control-
lable/Extra
Relays
Inlet
(%)
Tun
(%)
Press
. (Pa)
Cap.
(m3/h)
(%)
1
2
3
1
2
3
4
5
6
7
8
9
10
M1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
22
250
M2
20
100
0
0
0
0
0
0
0
0
0
0
0
0
0
20
0
20
25000
M3
21
25
0
0
0
1
0
0
0
0
0
0
0
0
0
21
0
20
26250
M4
36
100
0
0
0
1
0
0
0
0
0
0
0
0
0
36
0
20
45000
M5
37
25
0
0
0
1
1
0
0
0
0
0
0
0
0
37
0
18
46250
M6
52
100
0
0
0
1
1
0
0
0
0
0
0
0
0
52
0
18
65000
M7
68
100
0
0
0
1
1
1
0
0
0
0
0
0
0
60
10
16
85000
M8
84
100
0
0
0
1
1
1
1
0
0
0
0
0
0
80
10
14
105000
M9
100
100
0
0
0
1
1
1
1
1
0
0
0
0
0
100
15
14
125000
M10
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
The combi-table also contains the ventilation capacity. This is used to determine the ventilation position if control
is based on ventilation capacity per hour per animal (m3/h/animal).
The required pressure in the combi-table is used to control the inlet based on the under pressure in the house.
See Optimisation based on pressure page 9.
The ventilation level is expressed as a percentage. Using this percentage the control computer can locate the
required level of control of the fan(s) in the combi-table.
Extra fans are shown in the combi-
table as value ‘0’ (off) or ‘1’ (on).
The combi-table is sub-divided into positions (M1 thru M10 in the example). If the ventilation level is between two
positions, the control computer determines the middle point of these positions. The following rules apply:
•
Controllable fans: the control computer gradually controls the ventilation position from one position to another
and also adjusts the air inlets and extra inlets.
•
Extra fans: with rising ventilation the control computer will only activate the fans when the next position has
been reached. With falling ventilation the control computer will only deactivate the fans when the lower
position has been reached.
Summary of Contents for LUMINA 38
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