AFNZPxxx– DUALACE2 NEW GENERATION – User Manual Page 115/169
2) Vbatt is compared with a threshold value which comes as function of the
actual charge percentage; by this comparison the current provided by the
battery is obtained.
3) Current obtained at step 2 integrated over time returns the energy drawn
from the battery, in Ah.
4) Charge percentage is dynamically updated basing on the energy from step 3.
5) Threshold values for the battery charge can be modified by means of
BAT.MAX.ADJ. and BAT.MIN.ADJ. as to adapt the battery-charge detection
to the specific battery in use.
9.12 EVP Setup
When the EVP is set as ANALOG (see paragraph 8.2.2) the output is managed
as explained in the following example.
Considering the case in that the EVP request is concerning the lowering valve,
the MIN EVP parameter (see paragraph 8.2.2) determines the minimum current
set point applied to the valve when the position of the potentiometer is at the
minimum (MIN LOWER) (see paragraph 8.2.2).
Then, the current set point applied to the valve increases proportionally with the
potentiometer voltage up to the maximum (MAX EVP) (see paragraph 8.2.2),
reached when the position of the potentiometer is at the maximum (MAX
LOWER) (see paragraph 8.2.2).
EVP management.
If the valve is set as ON-OFF the MIN EVP parameter is disabled and the current
set point applied to the valve is only dependent by MAX EVP.
The dynamic delay seen during the modification of the current set point, in both
cases, ANALOG Valve and ON/OFF Valve, is dependent by the OPEN DELAY
and CLOSE DELAY parameters (see paragraph 8.2.2).
OPEN DELAY determines the current increase rate on EVP and it sets the time
needed to increase the current to the maximum permitted value.
CLOSE DELAY determines the current decrease rate on EVP and sets the time
needed to decrease the current from the maximum value to minimum.
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