ABB POW-01C switch power panel

Description

DSAI 133 is a 32 channel analog input board, POW-01C which can also be used in pairs, for a redundant

connection. It is used with DSTA 002A and DSTK 152.

3.2.1.5 DSAI 133N, Safety Analog Inputs

The Safety Analog Input (SAI) board used with Safeguard 400 Series is DSAI 133N.This is

based on the DSAI 133 for the standard S100 I/O system. POW-01C The connection units are made with

dual connections. The DSAI 133N board is used with connection unit DSTA N040 (shunt

resistor 2×125 ohm in series) which includes logic board DSTA N041.

The AI-board database configuration is equal to DSAI 133. Channel 32 is used by the SAI

software for test values to indicate if field values or test values are applied on the other 31

channels.

The loop signals are connected POW-01C to the connection unit. This unit contains:

• Terminals for connection of 31 single ended analog input signals. Power distribution for

field devices.

• The logic board is equipped with circuits for generation of test signals, as well as logic

which controls the sequential alternation between field values and test values.

The input board DSAI 133N contains:

• The hardware used is based upon a standard DSAI 133 board, with 32 channels. The AI

board starts to synchronize with the input channel test sequence as soon as the start-up

phase is finished. When it is synchronized with the connection unit, cyclic diagnostics will

be executed.

• Software to distinguish between test values and field values. The field values are updated

every 248 ms.

The operation of the analog input board is POW-01C monitored. The monitoring task executes with a cycle

of one second.

3.2.1.6 DSAI 110, Analog Inputs

DSAI 110 is an input board, used with connection unit DSTA N012 or DSTA N013. The loop

signals are connected to the connection unit. This unit contains terminals for connection of 32

single ended 8-bit analog input signals, as well as power distribution for field devices.

3.2.1.7 DSDI 110A, Digital Inputs

The DSDI 110A digital input set uses the standard, 32 channels 24VDC, DSDI 110A digital

input boards and a DSTD N007 POW-01C termination board with signal splitting. The field power are

supplied through the termination board and can be single or redundant.

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