Double channel traffic detecting used loop detector , Green color ,
toll station used
1. Specifications of Traffic detecting loop detector (LD-200):
echnical Parameter for single channel vehicle detector
8 levels,(0 is lowest, 7 is highest)
Power LED-Red, Channel LED-Green
automatic sensitivity boost
CH1 and CH2 flow direction detection
presence signal or pulse signal
Socket mount-11pin male(JEDEC B11-88)
-40 to 80 Celsius degree
Normal Working Temperature
-40 to 70 Celsius degree
2.Differen View of Traffic detecting loop detector (LD-200)
(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
the detector energises 2 relays for the output (each can be
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:
The LD-200 series detector may be configured for any one of the
AB Logic Presence Mode(Barrier Operation)
AB Logic Pulse Mode(Counting Logic)
1. If the detector is nor working--------Press reset
2. If red led indicator is not fully it -----Check for powedr
3. If green led indicator : a) Blinks slowly-------It maybe because the loop is short circuit or the no: of turns
is not enough.
b) blinks faster-----It maybe because the loop is open or the no: of turns is too
4. If no: of turns is not enough------Lower the frequency (if
the frequency is still too high, you must add more turns).
5. If no: of turns is too many----Higher the frequency (if the
frequency is still too low, you must remove some turns).
5. LD-200 Connections:
LD-200 single channel, boxed, 1 type 11pin connects
LD-202 single channel, boxed, 1 type 11pin connects
LD-205 single channel, boxed, 2 type 11pin connects
LD-206 single channel, boxed, 2 type 11pin connects