Lumina 17
Explanation control functions
4
2.1.2
Extra fans
Extra fans can only be switched on or off via a relay. They are usually used when the controllable fans are running
at maximum or in combination with controllable fans to achieve a gradual increase in ventilation.
Figure 3: Example of an extra fan switched on and off from the control computer by a relay
2.1.3
Combi-table
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)
Ventilation Exhaust
Inlets
Position
Cont. Cont.
Extra
Extra fans
Relay (0 – 1)
Cap.
Inlet
Extra
Pres-
sure
%
%
1
2
3
4
5
m3/h
%
%
Pa
M1
1
1
0
0
0
0
0
0
400
1
0
0
M2
14
100
0
0
0
0
0
0
5600
14
0
0
M3
15
50
A
0
0
0
0
0
6000
15
0
0
M4
30
100
A
0
0
0
0
0
12000
30
0
0
M5
40
100
A
0
0
0
0
0
16000
40
0
0
M6
55
100
A
1
0
0
0
0
22000
55
0
0
M7
66
100
A
1
1
0
0
0
26400
66
0
0
M8
75
100
A
1
1
1
0
0
30000
75
0
0
M9
88
100
A
1
1
1
1
0
35200
88
0
0
M10
100
100
A
1
1
1
1
1
40000
100
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 6.
Combi-table
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.
