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INSTALLATION
When the cables go outdoor is mandatory to use shielded cables. The
cables’ shielding must be connected to the respective ground
connectors (-V).
For internal wiring without shielded cables is recommended an
electrical environment where the cables are well separated, even at
short runs, especially to the power cables or external cables which
can be essentially subjected to interference or lighting.
Use 4-wire (or 5-wire, if the sensor is provided with input disable)
cables for the connections to the sensors. Make sure that the cables
correspond in size to the norms indicated in Table 4 (maximum voltage
drop on the cable = 0.1V):
Cable length(m) = 0.1V / (I[A] load x 2 x (res [Ohm/km] /1000))
I load max for each sensor = 100mA (400mA overall)
Length (m)
Type of cable
in relation to current absorbed by sensor
AWG
mm2
ohm/Km
20 [mA]
50 [mA] 100 [mA] 200 [mA] 500 [mA]
12
3,3
5,7
439
175
88
44
18
14
2
8,8
284
114
57
28
11
16
1,3
14
179
71
36
18
7
18
0,9
21
119
48
24
12
5
20
0,6
34
74
29
15
7
3
22
0,35
52
48
19
10
5
2
24
0,2
85
29
12
6
3
1
Table 4. Sensor Cable Length
