Operating instructions Dcontrol Date 0730
TBL02_54-GB 0730 Part-No. 00153238-GB
Page 15 / 28
7. Settings for operation
7.1 Settings for operation as a speed controller
7.1.1 Setting of output voltage via potentiometer „SET“
1. Dipswitch S1-3 ON position (control by internal potentiometer)
2. Setting the output voltage by the potentiometer “SET“ from approx. 0, 20-100 % of the applied
mains voltage, or in the range of the settings “n-min” to “n-max”.
7.1.2 Setting of output voltage via external signal or external potentiometer
1. Dipswitch S1-3 OFF position (control by an external potentiometer).
2. Setting the output voltage by the external signal or by an external potentiometer from approx.
0, 20-100 % of the applied mains voltage, or in the range of the settings “n-min” to “n-max.
7.1.3 Min. speed „n-min“ (minimum output voltage or basic speed)
If required setting of a minimum output voltage, e. g. basic speed (minimum airflow rate) of connected
fans.
Setting range:
From the counter-clockwise limit = “0“ (no “n-min“) to 15-100 % (^
approximately the mains voltage
applied).
7.1.4 Max. speed „n-max“ (derating) and Cos φ-adjustment
If required setting of a maximum output voltage, e. g. speed limiter.
Setting range:
From the clockwise limit (100 %) to 20 % (^
approx. 100 % - 20 % of the applied mains voltage).
For a given minimum output voltage to the setting “n-min“. For cos ϕ adjustment, turn “n-max“ counter-
clockwise such that the maximum output voltage will just be measured (with TRUE-RMS multimeter). This
adjustment must be made for maximum output from the fans. All flaps must be opened when using
centrifugal fans.
Cos ϕ adjustment
The output voltage from the unit depends on the inductance of the motor (cos ϕ). By this, the maximum
output voltage can already be reached below the maximum input signal
(<10 V / 20 mA). A correction is possible by setting “n-max" (cos ϕ adjustment).
set
0 100
%
n-min
0 100
%
n-max
0 100
%
The output voltage is switched off to “0” for
a controller signal less than 15 % of
approximately 15 % of the mains voltage
that is applied. For a controller signal
greater than 20 %, the output voltage is
switched on to approx. 20 % of the mains
volta
e a
lied.
n-max
n-min
100 %
50 %
U Motor
Potentiometer set / setting signal
0 1 2 3 4 5 6 7 8 9 10
0 - 10 V
10 9 8 7 6 5 4 3 2 1 0
10 - 0 V
0 2 4 6 8 10 12 14 16 18 20
0 - 20
20 18 16 14 12 10 8 6 4 2 0
20 - 0
4 5
6 7
2 8
8 10
4 12 13
6 15
216
8 18
4 20
4 - 20
20 18
416
8 15
2 13
6 12 10
4 8
8 7
2 5
6 4
20 - 4
n-min = 0 % n-max = 100
n-min = 35 % n-max = 85 %
Idealised schematic diagram
E
GND
Signal →
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