Handbook Ucontrol type-lines PXDM Date 06/04
TBL02_55-GB06/04 Part.-No. 00153239-GB
Page 62 / 105
8.6.3 Settings for operation modes 5.01 and 5.02
Air Volume control
together with centrifugal fans by means of a ring conduit in the inlet duct. The controller calculates
the air volume of the fan (m
3
/h) from the pressure differential between the suction side and the inlet duct
For the following modes of operation::
5.01 Volume control, Setpoint in m3/h (m3/s)
5.02 Volume control for ventilation systems setpoint depending on outdoor temperature Setpoint
in Pa (hPa, mbar) and temperature in °C.
Setpoint 1
Setting in measurning range ( depending on measuring range of pressure sensor and
programmed „K Factor“)
Setpoint 2
„Setpoint 2“ (factory setting OFF)
e.g. reduced value for night operation. Switch over by digital input .
(As long as no allocation has been carried out: Display: - - - - - F IO Setup).
Pband (Control range)
The control response can be adjusted to the system conditions
- small control range
= greater amplification and shorter control times
- big control range = longer control times and higher controller stability
Min. Speed „n-min“ (minimum output voltage )
If required setting of a minimum output voltage e. g. basic speed (minimum airflow rate) of
connected fans.
Setting range: 0 % → 20 % up to 100 % (or Max. speed).
Max. Speed „n-max“ (maximum output voltage)
If required setting of a maximum output voltage, e. g. speed limiter.
Setting range: 100 % up to „Max speed“.
Manual mode
OFF = automatic control as function of the set parameters
ON = automatic control without function, speed setting in menu “Speed manual“
Speed manual
Manual speed setting without influence by the external signal
Activation by menu „Manual mode“ or external contact at digital input (F IO Setup).
For information about deactivated regulation the adjusted value for manual speed
is indicated alternating with the actual value
Controller
DSG
+ -
D
p
0 -100 %
0-10 V Sensor signal
↓P ↑ ESC
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