ABB Advant Controller 450 User Manual

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S400 I/O units communicate with the Advant Controller 450 using MasterFieldbus.
See the outline presentation of MasterFieldbus in Section 1.7.7, Communication or the separate
documentation mentioned.
Process variables, connected via S400 I/O units and S100 I/O boards, are available in the
process data base in the same way. The high performance of MasterFieldbus makes the delay in
process scanning due to fieldbus communication negligible in most applications.
However, time-tagged events have comparatively reduced accuracy.
If an S400 I/O unit loses its contact with Advant Controller 450 for any reason, it enters “local
mode.” In this mode, it maintains its output signals at their most recent correct values or to a
predetermined value, as selected by the user. These safe values are set in the Advant Controller
450 data base and transferred to the unit at start-up. Normal operation is resumed when the
connection is re-established.
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A basic S400 I/O unit for binary signals has 32 channels. You can expand it with another
32 channels by adding an expansion unit. Analog units have 20 channels and cannot be
expanded.
Basic units are ready for direct connection to MasterFieldbus. Expansion units are connected to
the basic units by means of short ribbon cables.
The units are enclosed and equipped with a built-in power supply including a separate, isolated
supply for sensors. The enclosure is in accordance with IEC 529, IP20. All external connections
are made by plug detachable screw terminals. You can mount the units directly on a wall, or,
more commonly, in a protective enclosure on a mounting plate, or on DIN mounting rails.
All units have LED indicators for power supply and communication. Digital units also have
LEDs for indication of the status of each I/O channel.
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DSDX 452
ABB Master
237 mm (9.3”)
192 mm (7.6”)

ABB Advant Controller 450 Specifications

General

Brand	ABB
Model	Advant Controller 450
Category	Controller
Language	English