Rev.00 - 09.2018 | LDP1/LDP2 Single and Dual Loop Detector | © 2018 |
CARLO GAVAZZI Industri
13
EN
Dip-switch 2 & 3 - Channel selection:
Only used when dip switch 1 is set to “Manual”. Not
used if dip switch 1 is set to “Auto”.
Select the loop operating frequency by using the combination below:
(Switch 4) Delay:
To prevent false and unintentional detections of objects moving nearby to the
loop, the loop turn on delay time can be prolonged to 2 seconds. This is to ensure a stable detection
before a valid detection signal is accepted. Default detection time is 0.1 second (100ms)
(Switch 5) ASB:
In installation whereby there is high bed vehicles (i.e. trucks, lorry, tractors);
Automatic Sensing Boost (ASB) function can boost the loop sensitivity during detection. This ensures
high bed vehicles will be detected correctly. Using this switch 5, ASB can be turned on or off.
(Switch 6) Fail Mode:
Selecting “Fail Safe” will ensure that during power loss to the loop detector,
the relay contacts will activate (energized) and hence resulting the barrier to open. This is preferred
in application whereby during power loss, it is preferred to open the barrier such as in public areas,
shopping malls etc.
While selecting “Fail Secure” will ensure that during power loss to the loop detector, the relay
contacts will remain deactivated (deenergized) and hence resulting the barrier to close. This is useful
in application whereby during power loss, it is preferred to close the barrier such as in private areas,
private apartments etc.
Note: The fail safe and fail secure mentioned above is only referring to the power loss to the loop
detector and not referring to the power loss of the main source or power loss to the barrier. This is
because power is still required for the barrier to open or close regardless. If the same power source
is used for loop detector and barrier, a kind of backup power is then required.
(Switch 7) (Switch 10) Out Mode:
Relay output 1 and relay output 2 can be independently set
to be in pulse mode or presence mode.
In pulse mode, the relay only activates only for a short period when the vehicle enters or exits the loop.
In presence mode, the relay will remain activated as long as there is a vehicle parked on the loop.
Switch 7 is for relay 1 and switch 10 is for relay 2.
(Switch 8) (Switch 11) Time:
If pulse mode is selected in switch 7 or switch 10, the pulse output
duration can be set to be 0.1 second or 0.5 second duration.
Switch 8 is for relay 1 and switch 11 is for relay 2.
(Switch 9) (Switch 12) Ent|Ext:
If pulse mode is selected in switch 7 or switch 10, the pulse
output can set to be activated when vehicle enters the loop or only when the vehicle exits the loop.
Switch 9 is for relay 1 and switch 12 is for relay 2.
If presence mode is selected in switch 7 or switch 10, then switch 8/9 (relay 1) and switch 11/12
(relay 2) will change functionality.
In Presence mode, switch 8/9 (relay 1) and switch 11/12 (relay 2) are then used to set the maximum
time of an activation. If setting is different from infinite, the relay output will deactivate after the
specified time, following the table here:
