Prepare a 24 Vdc power supply and perform the connections
as shown in fig.14.
In this way the token insertion slot only opens when a vehicle is
on the presence loop. The token insertion commands the
barrier opening and the de-count of the vehicle; the barrier
closes again when the transit loop is disengaged (using logic P
on FAAC barriers, mod.620 - 640).
To program and use the detector FG2 operate as follows (the
recommended setting is indicated in grey):
On the front part you may find green LEDs (loop check),
red LEDs (loop status), programming microswitches
and the reset push-button. The red LEDs light on when a
metallic mass is detected; the green
LEDs are normally on: they
turn off to signal a
loop malfunctioning and can also
flash to indicate
a temporary fault:
in this condition the loop
operates regularly and the
Reset push-button can be pressed
to acknowledge the signal.
Below you will find the
Programming table of the microswitches:
Never change the setting of
microswitch SW7 and of both
switches under the LEDs (they must
be positioned to the right).
Sensitivity
The detector sensitivity can be set on four different levels: each
of the 2 loops has an independent setting.
SW1
SW2
LOOP 1 SENSITIVITY (presence)
OFF
OFF
LOW
ON
OFF
MEDIUM
– LOW
OFF
ON
MEDIUM
– HIGH
ON
ON
HIGH
SW3
SW4
LOOP 2 SENSITIVITY (transit)
OFF
OFF
LOW
ON
OFF
MEDIUM
– LOW
OFF
ON
MEDIUM
– HIGH
ON
ON
HIGH
Frequency selection
The detector operating frequency can be set on two levels
using the dip SW5. The detector automatically changes the
frequencies of both loops. Frequency depends furthermore on
the loop shape, on the number of windings and on the cable
total length.
SW5
FREQUENCY
OFF
LOW
ON
HIGH
Presence Time and Reset
The presence time can be set using the microswitch SW6. At
the end of the p
resence time, the detector signals “loop free”
and self-calibrates. The presence time starts when the loop is
engaged. An automatic reset is performed when the detector is
activated, changing the dip SW6 setting or pressing the Reset
push-button.
SW6
PRESENCE TIME (Self-calibration)
OFF
5 MINUTES
ON
INFINITE
Microswitch SW7
This microswitch must be programmed as shown below to
enable the correct operation of the system.
Relay 2 logic
When programming the microswitch SW8 you can choose if the
Relay 2 has to work in “presence” (contact active as long as the
loop is engaged) or “pulse on disengagement” logic (200 ms
pulse when loop 2 is disengaged).
SW8
RELAY 2 LOGIC
OFF
PRESENCE
ON
PULSE ON LOOP 2 DISENGAGEMENT
N.B.: For any further explanations on the detector FG2
operation, please refer to the specific instructions of the
product.
8
SW7
OFF
ENGLISH
ENGLISH
