58/126
The speed increases linearly as the valve opens. Speed 3 is reached when the valve is fully open (see
“EC motor auto-
matic speed control logic with 0..10 V modulating outputs” page 28
).
Icon
turns off when the valve closes again, in which case the fan stops if
I28
=0 or 3. The fan maintains speed 1 if
I28
=1 or 2. The fan maintains speed selected manually if
I28
=4 or 5.
Wiring diagram
N L
DI
1
GN
D
DI
2
AI1 GN
D
AI2
DO
2
GN
D
AI3 GN
D
T1
T2
S1
S2
T3
CO
M
N
L
M1
0..
10
V
~
+
-
V1
DO
1
V2
R1
AO1 GN
D
230Vac
AO2
G
G0
24Vac
V3
R2
Y G0
A +
B
-
MODBUS RTU
(TH-xMxxx)
N.B.: only standard EC motors can be used for this application (
M14
=1).