ABB S800 I/O User Manual page 10

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The FCI communicates with the Advant Controller, ModuleBus Modems and the I/O
modules.
read status and configuration of modules and channels. The FCI has a connector for
the TB810/TB811 Optical ModuleBus Port.
The FCI provides 24V d.c. (from the source) and an isolated 5V d.c. power to the
base cluster's I/O modules (12 maximum) by way of the ModuleBus connections.
One power source (single or redundant 24V d.c.) can be connected to the power
terminals (L+ & L-) of the FCI. A replaceable fuse for the 24V supply to the I/O
modules is located under the fuse cover.
1:1 redundant power sources can be supervised by connecting the power sources
POWER OK status signals to terminals SA and SB.
The size, type and direction of data to be transferred on the AF 100 bus depends on
and is determined by the I/O module type. The FCI can be configured to send or
transmit dynamic data over the Advant Fieldbus 100 with cycle times in the interval
of 1 to 4096 ms.
6
The FCI handles the I/O modules operations such as read and write data,
84 mm (3.3")
SERVICE
CI810
AF 100
1 2
L+ L+ SA
- -
L L
SB
+
-
SH
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T1 T2
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4 6
3 7
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2 8
1 9
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5
6
4
3 7
x 1
2 8
1 9
0
+ Tx
-
SH
Rx
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122 mm (4.8")
3BSE 020 925R101