Accessmatic accesloop500 Manual De Usuario página 19

accesloop
500 5242
Opening your life
2. nstallation Guide
Loop shape and turns
Loop is normally rectangle, the two longer sides is perpendicular to the direction of vehicle (metal object) motion. The length of longer
side depends on the width of road, usually 0.5m less than road width at both ends. Loop perimeter≥10m, 2 turns ； 6m≤Loop perimeter
<10m， 3-4turns ； Loop perimeter <6m， more than 5 turns.
Crosstalk
When two loop con gurations are in close proximity, one loop magnetic eld is disturbed by another. This phenomenon, known as
crosstalk, will cause false detection and deadlock.
It could be eliminated by ：
A ： Changing loop operating frequency by making di erent turn number for same-sized loops, such as 4 turns for one, 6 turns for
another.
B ： Increasing space between two loops to Min.2m;.
C ： Shielding for feeder cable。 The copper single-core wire is the preference for loop cable and feeder. Cable and feeder should be an
unbroken wire, or be welded together well if terminals are necessary. wire should be heat-oxidation resistant with sectional area not less
than 1mm2.
D ： Length of feeder should be 5 m at most , and feeder should be inter-twisted not less than 20 times per meter.
Metal reinforcer
Metal reinforcer (such as rebar) below road surface will a ect the changes of loop inductance, so 2 turns more than normal loop is
suggested.
Electrical data
Parameter LD 5242
Working voltage 24VAC/DC±10%
20 ~ 1500uH
Sensor range
Sensitivity 0.02%~0.2% (4 grade selection)
Reaction time 100ms
Frequency 2 degree selection
Output 2 relay outputs - (5A/AC230V) - CH1 Rpresence relay - CH2 presence relay
Presence mode Permanent / limited
Indicator IPower Indicator: Red LED - Status Indicator: Green LED
Isolation Transformer - Voltage Regulating Tube
Internal Protection
Voltage Dependent Resistor - Thermal Protection
Operating temperature - 40°C ~ 80°C
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