Main Characteristics; Technical Features - RIB ACG9063 Manual De Instrucciones

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ACG9063 and ACG9060 are two undecal, skirt-board, electromagnetic detectors especially

designed and built for the management of magnetic loops and for generating two command

signals upon a metal body of considerable size, such as a motor vehicle, motor cycle, etc.,

passing over them.

TECHNICAL 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

REALISATION 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.

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.