mode best suitable instance is selected automatically. Depending on the function
block type not all three parameters are selectable. The cycle time may be predefined
to one value. The instance number is a counter for the total possible number of
function blocks of that type used within an application configuration.
The
Execution Order
and
Instance Number
are a combination that is predefined
within a product. It is possible to select a pair out of the list.
example how the drop down list could look like.
IEC08000269.vsd
IEC08000269 V1 EN
Figure 35:
ACT: function block organization parameters
The
Cycle Time
can be selected to 3, 5, 10, 100 or 200 ms. Depending on function
block type and the 630 series product only one or more possibilities may be available.
•
REF630 and REM630 have functions running in 5, 10, 100 and 200 ms cycles.
•
RET630 and REG630 have functions running in 3, 10, 100 and 200 ms cycles.
A minus sign in front of the cycle time, for example -200ms, indicates
that the application is time driven, otherwise the application is
analogue data driven. Analogue data driven applications require
sample values from Analogue input modules - in case the physical
module is broken, applications are not executed. Time driven
applications are executed periodically regardless of the status of the
analogue signal processing.
The application execution is organized in time classes.
•
3 ms
•
For transformer differential protection and analog signal monitoring.
•
Binary I/O and circuit breaker control supporting the fast protection
functions.
•
The task starts on data change given by the analog signal scanning
•
5 ms
1MRS756800 F
Section 5
Protection and control engineering
630 series
57
Engineering Manual
