Chapter 5
– Data programming
DIN NANO 3RK
Page 23
Rev. 01-16
With
mOd=2
you will have the Condenser fan control with 0-10V analogue output and of sideband-type
adjustment.
The LED icon (11) turns on to identify the fan condenser control.
The adjustment pressure sensor (terminals 23 /24) is connected to the output probe sensor.
With mOd=2, the NO and Seq variables are not used and digital outputs 2 and 3 are deactivated.
The adjustment follows the operation of graph no.3 with the increase of the output pressure and the
decrease of graph no.4.
Output pressure INCREASE
(Graph no.3):
The analogue output of the adjuster will be 0V for output pressure probe less or equal to point (B)
representing the "SET point + iOv offset" value.
If the output pressure probe value is higher than point (B), you will have the analogue output at 10V for the
maximum BOv time. BOv is the Fans Boost times for which the adjuster output is increased by 100% in order
to help the start-up of the fans.
Between points (B) and (C), the analogue output will have a value proportional to the value of the output
pressure probe starting from the minimum value of the parameter (iMv) up to the maximum value of 10V.
With output pressure probe values equal or higher than point (C), you will have a 10V analogue output.
Digital output no.1 represents "the condenser fans inverter activation" and is ON for pressure values higher
than or equal to the set point and OFF for lower values.
Graph no.3
