ABB i-bus
®
KNX
Planning and application
FCC/S 1.X.X.1 | 2CDC 508 200 D0211 Rev A 362
Threshold value speed 0 <-> 1
0
Threshold value speed 1 <-> 2
30
Threshold value speed 2 <-> 3
70
Threshold hysteresis
10
The following switchover points apply:
Control value
Fan speed
0 %
1 %
0
1
10 %
1
34 %
35 %
36 %
1
2
2
Control value
Fan speed
50 %
2
74 %
75 %
76 %
2
3
3
85 %
3
100 %
3
Table 39: Switching up
Control value
Fan speed
100 %
99 %
3
3
80 %
3
66 %
65 %
64 %
3
2
2
50 %
2
Control value
Fan speed
26 %
25 %
24 %
2
1
1
15 %
1
1 %
0 %
1
0
Table 40: Switching down
12.2.7
Fan operation functional diagram
The following illustration indicates the sequence in which the fan control functions are processed.
Group objects that lead to the same box have the same priority and are processed in the sequence
in which the telegrams are received.
