Example Star Field Bus - ABB Symphony Harmony Series Instructions Manual

N TFB 01
N OTE : FO R FIV E TR A N S M ITTE R S :
M A X IM U M TOTA L B U S L E N G T H = 1200 M (393 7 FT)
A + B + C + D + E = 1200 M (393 7 FT)
Figure 2-8. Example Star Field Bus
Installation Complete
WBPEEUI260045A0
6 5 4 3 2
TB 4
– + – + –
F B 15 F B 14 F B 13
8 7 6 5 4 3 2
TB 3
– + – + – + –
F B 12 F B 11 F B 10 F B 9
8 7 6 5 4 3 2
TB 2
– + – + – + –
FB 8 FB 7 F B 6 F B 5
8 7 6 5 4 3 2
TB 1
– + – + – + –
FB 4 FB 3 F B 2 F B 1
Do not mix one channel inputs and two channel inputs on the
same termination unit. Whenever any termination unit is
wired for two channel input, all inputs to that particular termi-
nation unit must be wired for two channel input. If a termina-
tion unit is wired for one channel input, all inputs to that
particular termination unit must be wired for one channel
input.
The termination unit is ready for operation when:
1. The termination unit is installed on the field termination
panel.
2. The cables are connected.
3. Power wiring is connected and applied to the termination
unit.
A
1
100 M (328 F T)
+
B
100 M (328 F T)
1
+
1
50 0 M (16 40 FT)
+
D
250 M (820 FT )
1
E
+
250 M (820 FT )
Installation Complete
C
T 0 39 92 A
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