Automatic Systems
Logic D1 v06-02-en0802.doc
ERB-PM
Technical manual
19/31
2.5.5.3. Vehicle Presence Detector Boards DP139 and DP239
The Vehicle Presence Detector boards make it possible to manage one (DP139) or two (DP239)
induction loops to detect the presence of the vehicles. They are plugged on connectors X3 (
1:3
) and
X4 (
1:4
) of the board AS1200.
A.
CONNECTIONS
The board DP139 single channel (for one loop) or DP239 double channels (for two loops) are
connected to connector X3 (
1:3
) or X4 (
1:4
) of the AS1200.
The functions and connections of the sensors depend on the address allocated to each board
according to the table of various addresses in § 2.5.5.1.
Sensor Boards.
Loop 1 of the board plugged on connector X3 (
1:3
) has to be connected to the terminals 19 and
20 in X7
↑
and loop 2 to the terminals 21 and 22.
Loop 3 of the board plugged on connector X4 (
1:4
) has to be connected to the terminals 41 and
42 in X7
↓
and loop 4 to the terminals 43 and 44.
NOTE:
Pay attention to the correspondence of the pins when installing the boards.
When switched on, the lit red LED (
6:2
) confirms the correct positioning of the board.
6:7
6:6
6:5 6:4
6:3
6:2 6:1
Fig. 6 - DP 239
B.
INDICATIONS
The RESET button (
6:1) CANNOT BE USED
when the board is connected as this will disturb
the dialogue between the board and the micro-controller. This button is only used during
manufacturing. In case of a problem with the DP or accidental use of this button, the logic must
be reinitialised by switch-off the main power supply during 2 seconds.
The constantly lit red LED 2 (
6:2
) indicates that the board is in operation.
The green LED3 (
6:3
) indicates the status of the loop 1 on the boards DP139 and DP239.
The green LED 1 (
6:4
) indicates the status of the loop 2 on the board DP239.
Indications of the green LED:
Connected loop:
Is lit for the time of the creation of the field for the loop when
powered-on and in the event of detection on the loop.
Remains off at rest.
If a problem occurs: for example, a breaking of the loop,
it flashes every second to indicate the defect.
Unconnected loop:
lights when power-on, goes off, lights up again for 1 second,
goes off again and remains off.
