ABB S800 I/O - Language Setting; Backup; Initial Installation

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The TB820 ModuleBus Modem provides 24V d.c. short circuit proof (from the
source) and an isolated, short circuit proof 5 V dc power to the cluster’s I/O
modules by way of the electrical ModuleBus connection. One power source (single
or redundant 24V d.c.) can be connected to the power terminals (L+ & L-).
Redundant power supply can be supervised via inputs SA and SB.
Please refer to specifications in Appendix A, References  for more information.
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The Module Termination Units (MTU) are passive base units used to house the I/O
modules. They contain the process wiring terminals and a section of the
ModuleBus.
Please refer to specifications in 6,20RGXOHVDQG7HUPLQDWLRQ8QLWV and 6 
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more information.
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CLUSTER
SB
SA
L-
L+
L+
L-
F
R
ORx2ORx1
P
TB820
1
2
7
5
3
4
6
ERx
170 mm (6.7”)
58 mm (2.3”)
122 mm (4.8”)