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
voltage applied.
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
→
