ABB Advant Controller 450 User Manual

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The S800 I/O provides distributed I/O to the Advant Controller 450 controller using the Advant
Fieldbus 100 (AF 100). See the outline presentation of Advant Fieldbus 100 in Section 1.7.7,
Communication or the separate documentation mentioned for all details.
Process variables, connected via S800 I/O modules and S100 I/O boards, are available in the
process data base in the same way. The high performance of Advant Fieldbus 100 makes the
delay in process scanning due to fieldbus communication negligible in most applications.
However, time-tagged events have comparatively reduced accuracy for modules without
internal sequence of event handling.
If an S800 I/O module 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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The mechanics components of the S800 I/O are characterized by the following features:
• Highly modularized mechanics with four basic parts; Communication Interface modules
(or Field Communication Interface module), Optical Modulebus modem, I/O modules and
field wiring termination Units (MTUs) (Module Termination Units) which act as I/O module
carriers. The communication interface modules, Optical Modulebus modem and MTUs are
mounted on standard DIN-mounting rails according to DIN EN50033-35*15.
• All modules have plastic injection moulded enclosures which provide safety protection
degree IP20 according to IEC 529.
• I/O modules are protected from destruction by a mechanical keying arrangement if an attempt
is made to insert a module type in a position with a different key code than the factory set
code of the I/O module. MTUs have keys which are set to key code of its I/O module’s key
code.
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ABB Advant Controller 450 Specifications

General

Brand	ABB
Model	Advant Controller 450
Category	Controller
Language	English