Chapter. 6
– Options
DIN NANO FSC
Page 21
USER AND MAINTENANCE MANUAL
Rev. 03-18
As you can see in Chart 3, the variation of the output follows the same trend shown in the previous sections
(for simplicity's sake, the fan initial start-up BOv boost is not shown in the chart): however, it is possible to
see that varying the minimum fan speed actually changes the entire operating curve, according to the
external temperature.
FIXED SPEED MODE (mOd = 3)
In this mode, the 0-10 V fan control output takes on a fixed value, equal to parameter iMv. The enabling
analogue output and digital output are active only if the NDINFSC controller is enabled. When the enabling is
received, the fans go to full speed (iHv) for a BOv time period (fan boost), then the fans go to the value set in
iMv.
In this mode the alarms EH, EL, E0 and E1 are disabled, and it is not necessary to connect the temperature
or pressure probes to the analogue inputs.
Graph. nr.3
5.12.4
