General Information; Main Characteristics; Technical Features - Rib Acg9064 Handbuch

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ENERAL INFORMATION
ACG9064 is a magnetic loop detector, designed and manufactured
to manage two magnetic loops and to give one control pulse when
the passage of a metal body (vehicle, motor-bike, etc..) on the loop is
detected.
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ECHNICAL FEATURES
Power supply
Consumption
Connectable loop
Number of outputs
Types of outputs
Impulsive output
Exit presence
Relay contact capacity
Signal
Working temperature
Size / Weight
Range of tuning of the detector
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EALISATION OF THE SENSITIVE ELEMENT
The detectors are suitable for loops made up with an insulated copper wire with a
cross-section of at least 0.5 sq. mm. Preferably use twisted copper wires with at
least 20 twists per metre to connect the detector to the loop. Jointing in the loop
wires and in the twisted cable is not recommended. If unavoidable, jointings should
be welded and sealed in an appropriate watertight junction box to ensure best
detector operation. If the wires used for the twisted cable are especially long or in
proximity to other power cables, shielding of said wires is recommended. Earthing
of the shield should only be made at the extremity of the detector.
Excepting special cases, the detection loops should be rectangular. Install with the
longer sides placed at right angles in the direction of vehicle movement. These
sides should ideally be kept at a meter one from the other. Loop length is a function
of the width of the road surface to be monitored. A distance of no more than 300
mm is recommended between the loop and each edge of the road surface. For
loops running over a perimeter of more than ten metres two wire windings are
normally employed, while for loops with a lower perimeter three or more windings
are required, and four windings are required for loops with a perimeter below six
metres.
In order to reduce possible troubles, adjacent loops should be so laid as to
alternate three and four windings.
All permanent loop components must be secured to the road surface (Fig. 1) in
appropriate grooves made using masonry cutting tools or the like. A cross-cut at a
45° inclination must be made at the circuit angles so as to prevent the risk of the
loop cable being damaged in proximity to the apex of the right angles.
Nominal groove length: 10 ÷ 15 mm.
Nominal groove depth: 30 ÷ 50 mm.
The loop-detector connection cable must also be laid in an appropriate groove
running from one of the circuit angles along the circuit perimeter to the road surface
edge. To ensure wiring continuity between the loop and connection cable allow
for a long enough lead to reach as far as the detector before inserting the cable
inside the loop groove. After laying the required number of wire windings in the
groove along the loop perimeter, route the wire towards the road edge through the
connection cable groove.
It is advisable that connection cable length not exceed 100 metres. As loop
sensitivity diminishes proportionally to connection cable length the latter should be
kept as short as possible.
Loops are secured to road surface by means of a quick-drying compound
containing epoxy resin or asphalt mastic applied hot.
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.
M
AIN CHARACTERISTICS
- Connection of two magnetic loops
- easy control of functions through dip-switch
- 2 relay outputs with N.O. available
- Function selection by means of binary dip-switches
N.O. relay output - impulse adjustable from 0,2 to 1 second
N.O. relay output - only in presence
Led for presence of power supply - Led for state testing of the loops - Led for defective loops
80 x 79 x 40 / 110 gr
1 m
2 m
8
8
11/26 V ac/dc
40 mA st.by - 95 mA max
2
2
Impulsive and/or presence
0,5 A @ 230 V ac
-20/+55 °C
80 x 79 x 40 / 200 gr
15 - 1500 μH
10 ÷ 15 mm
loop
5 m
(recommended)
Cable 2 x 0,5 mm
(conform to CEI 20-22 II)
2 m
Cable 2 x 0,5 mm
(conform to CEI 20-22 II)
3 m
30 ÷ 50 mm
1
Detector
2
, l = 15 m
2A
Detector
5 m
(recommended)
2 , l = 15 m
2B