Dual Loop Detector LD0l
User Manual
1
lnstallation lnstructions
The LD01 is a dual channel microprocessor based detector designed specifically for parking and vehicle
access control applications.The primary function of the detector is to detect vehicle presence by means
of an inductance change caused by the vehicle passing overa wire loop buried under the road surface.
The various modes are selected by changing the position of switches on the front of the unit. The
detector oscillator is multiplexed to eliminate any possibility of crosstalk between the loops connected to
the detector. The switches allow for different loop frequency settings, sensitivity settings and
modesettings.
The unit has a number of initial selectable options for configuration of the relay outputs.
The LD01 provides visual outputs ( LED) on the front of the enclosure and relay change-over contacts at
the 11 pin connector at the rear of the enclosure. The power LED indicates that the unit has been
powered. The channel status LED's below indicate that a vehiele is present over the loop and when there
is a fault on the loop. The Presence relays are normally fail-secure and will close on a vehicle detector
loop failure but not ifthere is a powerfailure.
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Technical Data
ltems
Description
Tuning
Fully automatic
Self-tuning Range
--
50 to 1
OOOµH
Sensitivity
Four step switch selectable
Four step switch selectable
Frequency
Frequency dependent on loop size
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-
Modes
Output relays operate in the Presence (fail-secu re),
Pulse or Direction logic modes
Presence Time
Switch selectable:
Limited presence
Permanent presence
Pulse Output Duration
500 millisecond options
Response Times
Visual lndication
20 milliseconds
1 x Power LED - Red
2 x Channel Status LED - Green
-
Relay Outputs
2 x Relays rated - 5A
@
230 VAC
Reset
Reset by push button on front of enclosure
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