ABB Advant Controller 450 User Manual

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3-40 3BSE 002 415R701 Rev A
There is a “stall level” between the different levels. This means that the system must execute all
functions, including all PC-control operations, at least each fifth second for the system to
continue operation. If an operator station or an engineering tool is connected to the controller,
a warning consisting of a system message is presented on the display screen if all functions are
not executed within a 30-minute period. This protection is provided to guarantee that all
functions in an Advant Controller 450 have sufficient time to perform their tasks.
The user is not normally concerned with priority levels since these are managed automatically
by the system, but the user should be aware of the priority system and stall level if the system is
heavily loaded.
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Clock (Timer task)
PC and I/O with cycle times, 10, 20, 40 ms
Interrupt-controlled DI
PC and I/O with cycle times 50, 100, 200 ms
and 250, 500 ms, 1 sec, 2 secs
AI-channels with cycle times 5, 10, 30, 60, 300 and 600 secs
 Order handling from operator stations type AS 500 OS, MV 800/1
 MasterBus 300
System status
 Data Set-communication
 Trend data logging
 Event handling to operator stations type AS 500 OS, MV800/1
 Printer
 Handling of values for presentation on AS 500 OS, MV800/1
 EXCOM
 Engineering tool handling
 MasterView 320
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ABB Advant Controller 450 Specifications

General

Brand	ABB
Model	Advant Controller 450
Category	Controller
Language	English