37
☞
These graphs apply only if the minimum and maximum capacity setting
has not been changed.
The minimum and maximum capacity can be adjusted using the VU Control
Unit or the laptop/PC. This means that the graphics of the fan change.
Example
Min. Capacity 50% and Max. Capacity 70% means 50% at 0V and 70% at
10V at the 0-10V controls input.
8e
8.3 Relationship between speed and current at 0-10V controls input
When connecting regulators, the speed of the MX is controlled by varying the
voltage at the 0-10V controls input. Measurement of the voltage between the
GND clampsand the 0-10V controls input allows for the speed of the fan to
be derived from one of the graphs given below. The current can be measured
either by the MX [two clamps of the 0-10 V controls input] or the switch/
regulator connection.
8d
Adjustment example
If you wish to adjust an MX 20/10 to two speeds using a SAG 0-2: 750 and
1000rpm, follow the example below.
• Turn the switch to position ‘1’.
• Rotate the n1 potentio-meter until the voltage between the GND and E
soll
clamps is 3.8V. This corresponds with 750rpm, see the characteristic of the
MX 20/10 below.
• Now turn the switch to position ‘2’. Now rotate the n2 potentio-meter until
5.5V is given, which corresponds with 1000 rpm.
8f
The fan is connected in accordance with the applicable diagram.
☞
A number of diagrams may be simultaneously applicable. For
example: an MX-ZMV may be included in a network and at the
same time connected to a DNG 31.
SAG 0-2
n
2
n
1
+ 10V
EN
E
soll
GND
2000
1500
1000
500
0
0
2
4
6
8
10
E
soll
- GND (V)
0
25
50
75
100
V
3.8
5.5
toerental (min
-1
)
capaciteit (%)
toerental (min
-1
)
2000
1500
1000
500
0
0
2
4
6
8
10
Esoll - GND (V)
2000
1500
1000
500
0
0
2
4
6
8
10
Esoll - GND (V)
2000
1500
1000
500
0
0
2
4
6
8
10
Esoll - GND (V)
0
30
50
75
100
0
25
50
75
100
capaciteit (%)
toerental (min
-1
)
capaciteit (%)
toerental (min
-1
)
capaciteit (%)
toerental (min
-1
)
capaciteit (%)
0
25
50
75
100
2000
1500
1000
500
0
0
2
4
6
8
10
Esoll - GND (V)
0
25
50
75
100
0
10
50%
Capacity (%)
70%
2
4
6
8
0
Esoll - GND (V)
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