ABB S800 I/O - Power Supply

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The SD811 and SD812 are switch-mode power supply units which convert the
mains voltage to 24 volts d.c. These power supplies can be utilized for non-
redundant and redundant applications and do not require additional load-sharing
control equipment or diode voting units.
Please refer to specifications in Section A.1, SD811/SD812 Power Supply Module,
24V d.c.  for more information.
The S800 I/O station can be powered by a single or redundant supply voltage of
24V d.c., see Figure 1-7, Figure 1-8. Two power supplies with 120/230V inputs and
24V d.c. outputs are available to supply the I/O station and its field circuits.
The SD811 Power Supply provides 2.5A at 24V d.c. and the SD812 Power Supply
provides 5A at 24V d.c. See Power Supply Connections for details.
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I/O modules
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