Pego NECTOR, Руководство по эксплуатации и обслуживанию

Страница: 38 / 64

NECTOR
Page 38
OPERATION AND MAINTENANCE MANUAL
Rev. 03-21
PRESSURE DECREASING (Graph 2):
With pressure values of the pressure probe equal to or greater than point (D) the analog output will
be 10V.
Between point (D) and point (E) the analogue output will have a value proportional to the value of
the pressure probe starting from the maximum value of 10V and reaching the minimum value iMv.
With pressure values lower than point (E) and higher than point (F) the constant analogue output
will be at the minimum value iMv. The analog output of the regulator will be 0V for probe pressure
values less than or equal to the point (F) representing the "Set point" value.
The digital output fans 1 represents "capacitor fan inverter enable" and is ON for pressure values
greater than or equal to the set point and OFF for lower values.
Graph 2
MANAGEMENT IN CASE OF ALARMS
With the fan 1 output alarm input active, the analogue output is immediately brought to 0V and
digital output no. 1 is subsequently opened (inverter enable is removed).
The related alarm (EU1) is also signalled on the display.
EVAPORATOR FAN MANAGEMENT
If Ao1=1 the evaporator fans are managed with the 0-10V output and the speed is set through the
FsE parameter (from 20% = 2V to 100% = 10V).
In case of standby or alarms, the analogue output is immediately raised to 0V.
DECREASING delivery pressure
Analog
output
Fan
Output No.1
Delivery pressure
(BAR)
Delivery pressure
(BAR)
Possible inverter enabling