2
0
1
6
-1
1
14
Manual LC10-*
Commissioning
5
Commissioning
When the operating voltage is applied to the device automatic adjustment with the loop takes
place. The output relays are switched in the switch position "loop not allocated". The
adjustment takes 2 s, then the device is ready for operation. Automatic adjustment also takes
place when both sensitivity switches 3 and 4 (Loop 1) and 5 and 6 (Loop 2) are set to "OFF"
and then set to another switch position. The adjustment can be carried out separately for loop 1
and loop 2.
5.1
Test function
The loop detector is provided with an integrated test function, which enables the loop
frequency and sensitivity to be optimally set without additional devices or instrumentation.
Display of the recommended sensitivity
The vehicle must be driven onto the loop. The loop detector measures and stores the
frequency change. When switches 3 and 4 are changed over the recommended sensitivity is
indicated by flashing of LED 1 (Loop 1).
In addition to LC10-2:
When switches 5 and 6 are changed over the recommended sensitivity
is indicated by flashing of LED 2 (Loop 2).
Measurement of the loop frequency
The loop frequency can be measured via the LED. Set switches 3 and 4 from "OFF" to "ON".
The LED indicates the loop frequency via a signal sequence:
5.2
Loop geometry
The size and shape of the loop are determined by the respective application. Generally, the
maximum sensitivity of the induction loop is achieved if the loop is no larger than the vehicle to
be detected. This principle must in particular be observed if the sensitivity is reduced by steel
reinforcements within the floor.
Detection of passenger cars and forklifts
Adjust sensitivity step 3
LED
1
2
3
loop frequency
33 kHz
LED
3 x 10 kHz
3 x 1 kHz
1
2
3
roadway
driving direction
~ 0,5 m
1,5m
