Dual Way Traffic Detection System Gate Loop Detector With Two Relays

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1. Application:

1. To arm card readers and ticket dispensers.
2. As a barrier/gate/door closing detector.
3. As a barrier/gate/door opening detector (Free exit).
4. To generate pulses for counting vehicles.
5. vehicles in parking and vehicle access control applications.

2. Specifications of Traffic detecting loop detector (LD-200):

3.Troubleshooting:

4.Description:

(1)Loop detectors in recent years have become a popular tool having innumerable applications in policing,

right from surveillance operations to traffic control. Automation of gates and doors

has become a popular usage of the loop detector.

(2)The loop consists of several loops of wire and consideration ,should be giving to the loop

sensitivity when installing on different surfaces. Setting the correct sensitivity allows the loop

to operate with maximum detection (8 levels via a trimpot). When detection occurs,

the detector energises 2 relays for the output (each can be configured individually).

This energising of the relay can be configured into different modes, by selecting the respective dip switch.

(3)Fault Output:   Blinks slowly: It maybe because the loop is short circuit or the no:of turns is not enough.
Blinks faster: It maybe because the loop is open or the no: of turns is too many.

(4)Modes of operation:

5. Description:

1) Reset Switch : The reset switch enables the detector to be manually reset during  commissioning and testing . This results in the detector re-tuning the sensing loop and becoming ready for vehicle detection 

2) Selectable Pulse Time : This feature sets the length of time that the pulse relay will be energized for 1 Second or 0.5 Seconds 

3) Switch Selectable Sensibility: 11 levers adjustable sensitivity setting are available on the switches to allow flexibility in configuration.

4) Pulse Relay Selection : The Pulse Relay may be configured to energize on detection of a vehicle or when the vehicle leaves the loop 

5) Sensitivity Boost : This feature sets the undetect level to maximum sensitivity and is used to prevent loss of detection of high-bed vehicles 

6) Switch Selectable Frequency : 4 frequency settings are available to prevent cross-talk between adjacent loops 

7) Filter Option : This option is used to provide a delay between detection of the vehicle and  switchiing of the output relay . This relay is normally used to prevent false detection of small or fast moving objects 

8) Permanent Presence Option : This feature ensure detection of the vehicle will be maintained when the vehicle is parked over the loop for extended periods .

6. LD-200 Connections:

Loop detector order information:

LD-100  single channel, boxed, 1 type 11pin connects 100-240VAC
LD-102  single channel, boxed, 1 type 11pin connects 12-24VADC
LD-105  single channel, boxed, 2 type 11pin connects 100-240VAC
LD-106  single channel, boxed, 2 type 11pin connects 12-24VADC

Tag : 

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