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REACT V
Performance checks.
Y
U
CA CB
1
2
3
4
A
B
Figure 11. Shows connection of a voltmeter to check the actual
value on the normal version.
Formulas for calculating air flow
The following applies for analogue control.
Control signal 0..10 V DC give the following formulas:
• Calculation of the current pressure (V
value of the control signal (Y):
Y
V
= V
+
act
min
10 V DC
• Calculation of the current actual value (U) when you know
the value of the
V
act
U = 10 V DC
V
nom
Control signal 2..10 V DC gives the following formulas:
• Calculation of the current flow (V
value of the
the control signal (Y):
Y – 2 V DC
V
= V
+
act
min
8 V DC
• Calculation of the current actual value (U) when you know
the value of the
U = 2 V DC + 8 V DC
8
Swegon reserves the right to alter specifications.
4,00 V
V DC
) when you know the
act
(V
– V
)
max
min
current flow (V
):
act
) when you know the
act
(V
– V
)
max
min
current flow (V
):
act
V
act
V
nom
Y
U
CA CB
1
2
3
4
A
B
Figure 12. Shows connection of a voltmeter to check the actual
value on the spring return.
Key to formulas opposite:
Y = control signal in [V] DC
U
= actual value signal in [V] DC, always refers to 0-V
*
V
= current air flow in [l/s, m
act
V
= set min. flow in [l/s, m
min
V
= set max. flow in [l/s, m
max
V
= nominal flow in [l/s, m
nom
Note! Does not indicate damper position.
*
20200928
4,00 V
V DC
nom
/h]
3
/h]
3
/h]
3
/h], see tables page 2 & 3.
3
.
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