Honeywell International Inc. RTU-K03 Manual De Usuario
LONWORKS( Data Cables
Page 7
L
L
L
L
ON
ON
ON
ON
W
W
W
W
ORKS
ORKS
ORKS
ORKS
Data Cables
Data Cables
Data Cables
Data Cables
• The L
ON
W
ORKS
1
data cable must be twisted pair
• In a free topology configuration, the sum total of the sections must
not exceed 500m
• In a bus configuration, the sum total of the sections must not
exceed 2700m
• In a free topology configuration, activate the 50ohm terminator by
placing the appropriate jumper on the FTT10A plug-in of the CTU-
PLG06 board inside the TemaServer
• In a bus configuration, place two terminators (with resistance
values of 100ohm 1% ½W) at each end of the bus
• Check that the length of the L
ON
W
ORKS
data cable corresponds
to the norms indicated in Table 1.
Type of cable
Length [m] in relation to cable capacity
AWG
mm2
Ohm/Km
50nF/Km 100nF/Km 200nF/Km 500nF/Km
1uF/Km
12
3,3
5,7
2676
1892
1338
846
598
14
2
8,8
2153
1523
1077
681
482
16
1,3
14
1707
1207
854
540
382
18
0,9
21
1394
986
697
441
312
20
0,6
34
1096
775
548
346
245
22
0,35
52
886
626
443
280
198
24
0,2
85
693
490
346
219
155
Table 1: Length/capacity of L
ON
W
ORKS
data cables (m)
• The FTT10A Echelon v1.2 User Guide recommends the cables
indicated in Table 2.
Producer and model
AWG Connection to bus -
maximum total length [m]
Connection in free topology –
maximum node-node length
max. [m]
maximum node-node length
max. [m]
Belden 85102
16
2700
500
Belden 8471
16
2700
400
Level IV (twisted pair,
typically solid and
unshielded)
typically solid and
unshielded)
22
1400
400
JY (St) 2x2x0.8 (4-wire
helical twist, solid
shielded)
helical twist, solid
shielded)
20
900
320
Table 2: Recommended L
ON
W
ORKS
cables
1
L
ON
W
ORKS
®
is a trademark of Echelon Corporation