Pego NECTOR, Руководство по эксплуатации и обслуживанию

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NECTOR
Page 37
OPERATION AND MAINTENANCE MANUAL
Rev. 03-21
FAN SPEED MANAGEMENT - 0-10V OUTPUT
Parameters: Ao1 (3°), An5 (3°), Au1/2 (3°), FsE (2°).
CONDENSER FAN MANAGEMENT
If Ao1=2, An5=3 and AU1/2 = +/- 9 the condenser fans are managed with the 0-10V output and
sideband type adjustment. The configured auxiliary digital output (AU1 or AU2) is used as consent.
The fan speed adjustment follows the operation of graph no. 1 as the delivery pressure read by the
probe An5 increases and graph no. 2 as it decreases.
INCREASING pressure (Graph 1):
The analog output of the regulator will be 0V for probe pressure values less than or equal to the
point (B) representing the “StP parameter se iOu offset" value.
If the pressure value of the pressure probe exceeds point (B) the analog output will be 10V for the
maximum time bOu. bOu is the Fan Boost time for which the regulator output is increased to 100%
to help the fans start.
Between point (B) and point (C) the analogue output will have a value proportional to the value of
the pressure probe starting from the minimum value of the parameter (iLv) until reaching of the
maximum value of 10V.
With pressure values of the pressure probe equal to or greater than point (C) the analog output will
be 10V.
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 1
5.31
INCREASING delivery pressure
Analog
output
Fan
Output No.1
Delivery pressure
(BAR)
Delivery pressure
(BAR)
Possible inverter enabling