10
TK_S014 – Installation Manual
24
0,2
85
693
490
346
219
155
Table 2. Length/Capacity of LONWORKS
Data Cables (m)
The FTT10A Echelon
v1.2 User Guide recommends the cables indicated in Table 3.
Producer and Model
AWG Connection to bus
-maximum total
length [m]
Connection in
free topology –
maximum node-
node length
max. [m]
Connection in free
topology –
maximum total
wire length. [m]
Belden 85102
16
2700
500
500
Belden 8471
16
2700
400
500
Level IV (twisted-pair,
typically solid and
unshielded)
22
1400
400
500
JY (St) 2x2x0.8 (4-wire
helical twist, solid
shielded)
20
900
320
500
TIA Cat5
/
900
250
450
Table 3. Recommended LONWORKS
Cables
Input wires
Use a twisted pair cable for the contacts connections.
For outdoor wiring 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 whom can be essentially subjected to interference.
The following table lists wire gauges and distances for Inputs.
Cable type
Max distance (m)*
AWG
mm2
Ohm/km
12
3.3
5.7
2193
14
2
8.8
1420
16
1.3
14
893
18
0.9
21
595
20
0.52
34
368
22
0.35
52
240
24
0.2
85
147
26
0.13
137
93
Table 4 Length of Input cables
*One-volt voltage drop is considered typical.
Readers wires