OBID
®
Installation
ID AWE 3000/6000.A-A
FEIG ELECTRONIC GmbH
Page 47 of 55
H40591-4de-ID-B.doc
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11.3. Circuitry of the digital inputs
The evaluation unit has 2 digital inputs. These are passive, 24V optocoupler inputs, which means
that the 24V=-voltage has to be supplied externally. As far as the standard version is concerned,
input 1 suppresses the opening pulse at relay 1. In this case, the output of a direction detector is
connected in order to suppress the detection of leaving vehicles equipped with a vehicle trans-
ponder for car parks with a combined entrance and exit. Input 2 is used for optional functions. All
inputs are to be found on terminal strip X3.
Configuration of terminal strip X3 – digital inputs (24V, passive)
Terminal
Name
Explanation
X 3.1
IN +
Optocoupler anode input 1
X 3.2
IN -
Optocoupler cathode input 1
X 3.3
IN +
Optocoupler anode input 2
X 3.4
IN -
Optocoupler cathode input 2
Chart 5:
Terminal strip X3
11.4. How to connect the antenna
OBID
®
-antennas are connected to terminal X1. Usually, one antenna is jammed to X1.1 and X1.4,
while the middle terminals X1.2 and X1.3 remain idle.
In case two antennas are connected, terminals X1.1 and X1.2 are used for the first and X1.3 and
X1.4 for the second antenna. The polarity of both antennas may be corrected by interchanging the
connections. This might become necessary for reverse polarization, separately installed ground
loops (see also chapter
12.3. Polarity check of the induction loops of the OBID
-ground antenna
)
11.5. Terminal plan for the synchronization of OBID
®
- antennas
The evaluation unit with the plug-in bridge position J50 (Bild 6) on "M" is the master unit. It emits
the synchronization signal at terminals X2.3 (SO+) and X2.4 (SO-). This signal of the master se-
lection unit is lead to inputs X2.1 (SI+) and X2.2 (SI-) of the slave selection units. (plug-in bridge
position J50 on "S"). If another evaluation unit has to be synchronized, the synchronization signal
of terminals X2.3 (SO+) and X2.4 (SO-) of the slave station can be used. Each following synchro-
nized evaluation unit has to be operated in the slave mode. Illustr. 4 shows the serial connection of
the synchronization signal.
