Components and Operation
Revision 04 (English), Date: 26.04.2016
10
2.3.1
Connection Plan of the 12+1 Pin Socket
The connection plan for the system used is:
The current consumption is approx. 100 mA. The input F
sel
1 to 3 for selection of a loop
frequency have to be connected according to the following table:
Pin 9 is an electronic switchable contact to +24 V and has a limited current output of
20 mA. It is switched to +24 V when a guide wire with the correct current and frequen-
cy settings, is detected. It is possible to set the detection threshold via a potentiometer.
The capacity and offset of the DC voltages U
sum
and U
dif
are in the range ±10 V se-
table over potentiometers.
2.3.2
External signal processing (not included within the systems
scope of delivery)
As it can be seen from Figure 6 on page 19 in the annex, the course, the difference
voltage takes between its maxima is on the whole linear. The maxima occur in both di-
rections exact at the point designated by the installation height, therefore with an in-
stallation height of 200 mm the maximums occur 200 mm left and right of the wire.
Pin #
Function
Pin #
Function
1
+24 V
8
Do not connect.
2
GND
9
„Guide wire detected“
3
F
sel
1 *)
10
F
sel
3 *)
4
F
sel
2 *)
11
U
sum
5
Do not connect.
12
U
dif
6
Do not connect.
PE
Shield
7
Do not connect.
*) = as it is of advantage for large loops to use as low a frequency as possible,
Fsel 1-3 should be left unconnected. They are internally connected over a 10
KOhm resistor to GND.
Table 5
Connection Plan of the 1+1 Pin Socket
5100 Hz
5700 Hz
6300 Hz
7000 Hz
7800 Hz
9000 Hz
10000 Hz
12000 Hz
F
sel
1
O
+
O
+
O
+
O
+
F
sel
2
O
O
+
+
O
O
+
+
F
sel
3
O
O
O
O
+
+
+
+
-
O = connect pin with GND or leave open
-
+ = connect pin with +24 V
Table 6
Frequency selection over the three Fsel inputs
