RIB ACG9063 Manuel page 9

In the case of two contiguous loops, keep a minimum distance of at least two metres
between each.
Note: The inductive activity and hence the sensitivity of the loop detection 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.
WORKING 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. 3)
POWER - RED LED PRESENCE OF POWER SUPPLY
This LED remains always ON when the power supply is present.
DETECT - RED LED STATE OF TESTING OF THE LOOP
This LED comes ON when there is a vehicle on the loop or when the Loop is defective.
LOOP FAULT - RED LED DEFECTIVE STATE OF LOOP
This LED comes ON when the circle of the loop is open or when there is a short circuit, and it
is used to signal when the loop is defective.
SETTING AT WORK
- Realize the connections for the undecal socket as shown in Fig. 3 and subsequently insert
the detector as shown in the same figure.
- Set up the frequency through the DIP 6 as shown in TABLE 1. 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 LOW value (DIP 6 ON).
- Set up the sensitivity through the DIP 7-8-9 as shown in TABLE 1. Setting the sensitivity
allow to forbid the detection of metallic body with little dimensions such as bicycle and
motorcycle.
- The impulsive exit can be enabled by using the DIP 1 (Diagram 1) and it is possible to select a
time between 0,2 s (DIP 1 in OFF) and 1 s (DIP 1 in ON).
- If the Exit presence is used, the relay comes on when a vehicle is detected by the loop and
stays on all the time until the vehichle leaves the loop area.
- 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 7-8-9 until the desired sensitivity level is obtained.
DIP 5 ON => "SENSITIVITY AMPLIFIER". This feature is used to increase the sensitivity in order to
keep the detection contact active even in the case of very high vehicles or during
the passage of a tractor with a trailer.
METHOD BY IMPULSE
DIP 2 OFF => the relè activated immediately at the commitment of the loop;
DIP 2 ON => relè activated at the release of the loop.
PERMANENT PRESENCE
DIP 3 ON => this ensures that the detection of the vehicle is maintained even when parked on
the loop for a long period.
FILTER OPTION
DIP 4 ON => you can select a delay of 2 s between interception of the vehicle and switching
of relè output.
This delay is normally used to prevent erroneous detection of small or fast moving objects.
TIME IN EXTENSION
DIP 10 ON => the result will be an extension of time of the impulsive output of 2 s.
TABLE 1
DIP SWITCH N° FUNCTION
1 PULSE TIME
2 PULSE METHOD
3 PERMANENT PRESENCE
4 FILTER
5 SENSITIVITY AMPLIFIER
6 FREQUENCY
SENSITIVITY 2% (LOW)
SENSITIVITY 1%
SENSITIVITY 0,5%
SENSITIVITY 0,2%
7-8-9
SENSITIVITY 0,1%
SENSITIVITY 0,05%
SENSITIVITY 0,01% (HIGH)
SENSITIVITY 0,02%
10 TIME IN EXTENSION
9
ON OFF
1 s 0,2 s
AT THE
AT THE RELEASE OF
COMMITMENT OF
THE LOOP
THE LOOP
ON OFF
OFF
2 s
ON OFF
LOW HIGH
DIP 7-8-9 ON -
DIP 7-8 ON DIP 9 OFF
DIP 7-9 ON DIP 8 OFF
DIP 7 ON DIP 8-9 OFF
DIP 8-9 ON DIP 7 OFF
DIP 8 ON DIP 7-9 OFF
DIP 9 ON DIP 7-8 OFF
- DIP 7-8-9 OFF
OFF
2 s
G
B