RIB ACG9060, Руководство пользователя, Страница: 9 / 20

G
B
system is reduced by the presence of a steel reinforcement beneath the
road surface. Ideally allow for a distance of 150 mm between loop cable
and steel reinforcement.
In order to obtain an optimal working of the system it is advisable to
use the RIB loops.
Figures 2A and 2B represent examples of connection of these loops
to the detector.
W
ORKING INSTRUCTIONS
RESET/CALIBRATION PUSH-BUTTON
The RESET push-button makes it possible to initialize the detector and
automatically acquire the parameters of the loop connected for correct
functioning.
N.B. Making sure that there is no metallic mass on the loop, press the
RESET push-button to carry out an automatic calibration of the
detector.
The RESET push-button must be pressed each time the position of one
more dip-switches is varied.
LED (FIG 4)
- At power-on and during the calibration phase, the LED remains steady
for approximately 3 sec and flashes for 3 more sec.
- The led turns on when the presence of a metallic body is detected.
SETTING AT WORK
- Realize the connections for the undecal socket as shown in Fig. 4 and
subsequently insert the detector as shown in the same figure.
- Set up the frequency through the dip-switches 1 and 2 as shown in
Fig. 3. The change of frequency is mainly useful to avoid interference
between two near loops (2-3 m); in this last case it is necessary to set
up different frequencies. As a general rule the frequency must be low for
large loop and high for small loop.
In most cases, it is recommended
that the frequency is set on the MEDIUM LOW value (DIP 1-2 = ON-
OFF).
- Set up the sensitivity through the dip-switches 3 and 4 as shown in Fig.
3. Setting the sensitivity allow to forbid the detection of metallic body
with little dimensions such as bicycle and motorcycle.
- Output OUT1 may be set for impulsive (100 ms) functioning or presence
functioning through the dip-switch 8 (Fig. 3).
- Output OUT2 may be set for impulsive (100 ms) functioning with
activation on the entrance or on the exit of the loop; otherwise this output
may be set to presence functioning, through the dip-switches 6 and 7
(Fig. 3).
- Be sure that there is no metallic mass on the loop, and press the RESET
push-button to carry out an automatic calibration of the detector.
- Carry out sensitivity tests with the various types of vehicles that the
device must detect. If necessary, vary the setting of dip-switches 3 and
4 until the desired sensitivity level is obtained. It is not advisable to use
excessively high sensitivity values.
In most cases, it is recommended that the sensitivity is set on the
MEDIUM LOW value (DIP 3-4 = ON-OFF)
Once the optimal sensitivity level has been established, if necessary
enable the BOOST function using dip-switch 5.
- Presence time set up
The dip switch SW10 (see Fig. 5) allows the setting of the presence time
between 5 min and ‘infinite’, once the “presence” mode of output OUT2
and OUT1 has been set.
If 5 min is selected, the relay is energised on detecting the earth and
remains energised for 5 minutes if the earth remains on the loop, after
which the relay de-energises. When the earth abandons the loop, the
device automatically calibrates without the operator having to operate
externally.
If ‘infinite’ is selected, the relay is energised on detecting the earth and
remains energised for the entire time in which the earth remains above
the loop.
To access the dip-switch, remove the electronic card from the plastic
box.
Once the dip-switch is set, the electronic card must be re-inserted in the
plastic box by following the indications given in Fig. 6, taking care that
the card is positioned between the second and the third guide.
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