ABB S800 I/O User Manual page 40

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Installation of an I/O Station with redundant FCIs requires two CI820 FCIs and a
TB815 Interconnection Unit
the base cluster by an electrical ModuleBus extension cable. From the TB815
ModuleBus connector, a TK801V0xx cable is connected to the first MTU via a
TB806 Cable Adapter-in module.
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The redundant FCIs can either be mounted on a separate DIN rail or the same one as
the I/O modules. Room must be allowed to the left and right of the FCIs for
disconnection from the TB815 for removal
The total length of the ModuleBus extension, from the TB815, and ModuleBus
segments of the I/O modules must not exceed 2.5 meters (8.2 feet).
30
(Figure
F R
P
T1 T2
PR
DU
SERVICE
STN. ADDR
5
6
4
3 7
x 10
2 8
1
9
0
5
6
4
3 7
x 1
2 8
CI820 TB815
1 9
0
SWX.X/Y
L+L+ SA
AF100
SB
L- L-
+
-
SH
SH
2-4). They are connected to the I/O modules of
M
O
D
U
L
E
B
U
S
SERVICE
CI820
SWX.X/Y
L+ L+ SA
L- L- SB
Tx
Rx
(Figure 2-5).
F R
P
T2
T1
PR DU
STN. ADDR
5
6
4
3 7
x 10
2 8
1
9
0
5
4 6
3 7
x 1
2 8
1 9
0
AF100
+
-
SH
SH
3BSE 020 923R101