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Section I :: User
A table with shielded cables recommended according to the several
installations is provided below. The indicated Belden codes meet the
specications required; cables of other manufacturers can be used
provided that the specications below are complied with.
Recommended type of shielded cable
Serial Card
3
2
1
GND
RX+/TX+
RX-/TX-
16 1,50 13,7 1173 9860
18 1,00 22,6 711 3074F
22 0,50 48,2 333 3105°
24 0,22 78,7 204 9841 o 8103
Cable impedance: 120 Ohm (essential characteristic).
Parasite capacity: about 40 pf/mt (optional characteristic).
Signal propagation time: 5 ns/mt (optional characteristic).
Depending on the estimated length of the network, the cable with lower
section can be used. For example, a AWG 22 cable is sufcient for a
maximum length of 300 m.
Note: an AWG 20/22 shielded cable (4 wires + shield) and two
branching boards (use the E968573484 KIT) must be used to connect
the terminal and sequencer when the length exceeds 50 m and reaches
a maximum of 200 m. As shown in the diagram below.
Follow these guidelines to connect the Sequencer Terminal:
o Use a 6-wire telephone cable and RJ12 connectors;
o terminate the cable as shown in the gures;
o the cable length must not exceed 50m (*).
Bianco White Blanc Weiss Blanco
Nero Black Noir Schwarz Negro
Rosso Red Rouge Rot Rojo
Verde Green Vert Gren Verde
Giallo Yellow Jaune Gelb Amarillo
Blu Blue Bleu Blau Azul marino
1
2
3
4
5
6
1 Rx/Tx-
2 Rx/Tx+
3 GND
4
5
6
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