Product Setup Guide; Channel Selection - Allmatic A1H-U Manual De Instrucciones

8. Product Setup Guide

The following section gives a general introduction of how to adjust the Loop Detector. Note that changes
performed on the DIP switches will not take effect until the product has been restarted. The sensitivity
dials can be adjusted while the product is running and will take effect immediately without restart.
When the Loop Detector is powered on or reset, it will automatically adjust to its surroundings. For this
reason, it is important to keep the loop free of any vehicle during start-up/reset. If a vehicle is parked
on top of the loop during start-up/reset, this vehicle will not be detected. Only after the vehicle has
been removed, the Loop Detector will automatically recover to normal operation.
WARNING: Before making any changes to the product settings, make sure no persons or vehicles
can be hit by any closing/opening mechanisms connected to the output of the Loop Detector.

8.1 Channel Selection

The Loop Detector can operate on four different frequency channels. This allows up to four individual
loops to operate in close proximity of each other without mutual influence. If two separate Loop
Detectors are operating on the same frequency channel, they may interfere with each other and cause
false detections, if the loops are placed too close. Changing the frequency channel on one of the
detectors can eliminate this problem.
When the Automatic Channel Mode is selected, the Loop Detector scans all four channels during the
first 10 seconds after start up. Based on this measurement the Loop Detector selects the channel which
is least exposed to disturbance from neighbouring loops and other electrical or magnetic sources of
noise. After automatic channel selection is completed, the power LED flashes white to indicate which
channel is selected e.g. three flashes shows channel three is selected.
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Rev.00 - 09.2021 | A1H-U Single Loop Detector | © 2021 | Allmatic
Loop
Trafic flow
Channel 1
Loop
Channel 4
L11 L12 E1
R21 R22 R23
5 6
4 7 LOOP
3 8
2 9 RELAY 1
1 10
SENSITIVITY RELAY 2
R11 R12 R13
A1 A2 E2 Loop
Channel 3
L11 L12 E1
R21 R22 R23
5 6
4 7 LOOP
3 8
2 9 RELAY 1
1 10
SENSITIVITY RELAY 2
R11 R12 R13
A1 A2 E2
L11 L12 E1
R21 R22 R23
5 6
4 7 LOOP
3 8
2 RELAY 1 9
1 10
SENSITIVITY RELAY 2
R11 R12 R13
A1 A2 E2
L11 L12 E1
R21 R22 R23
5 6 LOOP
4 8 7
3 9 RELAY 1
2 10
1 RELAY 2
SENSITIVITY
R11 R12 R13
Loop
A1 A2 E2
Channel 2
Trafic flow