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more slowly; this is the "Standby" function. When a command arrives, the
control unit will reset to normal functioning (after a brief delay). This feature
is designed to reduce power consumption, as this is a very important
consideration with solar power.
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10.2.3 - Calculation of maximum number of cycles per day
This product is expressly designed to also be able to operate with the
power supply system of the PF solar energy model. Suitable technologies
have been supplied to minimise the power consumption when the auto-
mation is stopped, by turning off all the devices that are not essential to
the operation (for example the photocells or the key selector light). In this
way all the available energy is stored in the battery, and will be used for the
movement of the gate.
Caution! - When the automation mechanism is powered by PF, it
cannot and IT MUST NOT BE POWERED by the electricity grid at
the same time.
Usage limits: maximum number of cycles per day, in a given period of
the year.
The PF solar-powered system allows full energy independence for the
automation, whilst the energy produced by the solar energy panel and
stored in the battery remains higher than that consumed by the gate
manoeuvres. With a simple calculation is possible to estimate the maxi-
mum number of cycles per day that the automation can execute in a given
period of the year in order that this energy balance remains positive.
The first part of the available energy calculation, is explained in
the PF instruction manual; the second part of calculation of energy
consumed and therefore, the maximum number of cycles per day, is
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explained in this chapter.
Establish the available energy
To determine the available energy (see also the PF instruction manual)
proceed as follows:
01. In the ground map supplied in the PF kit instruction manual, locate
the system installation point; then obtain the value of Ea and the
degrees of latitude of the location (Ex. Ea = 14 and degrees = 45°N)
02. In the graphs (North or South) shown in the PF kit instruction manual,
locate the curve which relates to the degrees of latitude of the posi-
tion (ex. 45°N)
03. Choose the period of the year for which you wish to do the calcula-
tion, or choose the lowest point of the curve if you wish to carry
out the calculation for the harshest period of the year; then find the
corresponding Am value (i.e., December, January: Am= 200)
04. Calculate the available energy value Ed (produced by the panel) by
multiplying: Ea x Am = Ed (i.e. Ea = 14; Am = 200 thus Ed = 2800)
Establish the energy consumed
To calculate the energy consumed by the automation proceed as follows:
05. In the table below choose the box corresponding to the intersection of
the row with the weight and the column with the opening angle of
the gate. The box contains the severity index (K) of each manoeuvre
(i.e. WS200W with 180 Kg leaf and opening of 95°; K = 105).
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