ABB Advant Controller 450 User Manual

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Use empirical formulae to permit practical estimation of the memory requirement of the
different functions. Please refer to Section 3.1.13, Memory Calculation. For detailed
information regarding the memory requirements of different PC elements, see the reference
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Inaccuracy expressed as drift in time max. 0.1 ms/s
(stand-alone system)
When a controller is included in a control network, the clock is
synchronized to a master clock, for example the clock in an operator station
or a dedicated controller.
The accuracy is then related to the master clock accuracy.
Relative error in time when synchronized via network max. 3 ms
You can synchronize one or several controllers via external minute
pulse signal. The aim is to synchronize to an accurate external clock
and, in the case of several controllers, to keep the relative error
in time low.
Relative error in time when synchronized
via external minute pulse signal max. 2 ms
Relative time error with time-tagged events, see Section 3.2.3, Process Interface.
The external synchronization input is, from an electrical viewpoint, compliant with PC
standards. For data, see Table 3-13 below.
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redundant CPU system min. 2 hours
(after ≥20 h of recharging)
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Input signal
(opto coupled input type)
“0” = -50 to + 2 V
“1” = +12 to + 60 V
Filter time constant ≤1 ms
Pulse length >10 ms
Triggers at positive flank

ABB Advant Controller 450 Specifications

General

Brand	ABB
Model	Advant Controller 450
Category	Controller
Language	English