Function Block Execution Parameters - ABB Relion 650 Series Engineering Manual

Section 5
Protection and control engineering
Boolean input and output signals may need to be inverted to fulfill the logic. ACT supports to add
the inversion logic to a binary signal.
All not mandatory input signals have a default value that will be used when not connected.
5.1.4

Function block execution parameters

Three function block execution parameters have influence on the runtime execution of the
function block within the application configuration.
• Execution order
• Cycle time
• Instance number
Each time a new function block is selected these parameters have to be selected. In fixed mode
user selects parameters from the drop down lists in ACT. In automatic 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.
Execution Order and Instance Number are a combination that is predefined within a product.
The
It is possible to select a pair out of the list.
could look like.
IEC08000269 V1 EN-US
Figure 32: ACT: function block organization parameters
48
The input signal on glue logic function blocks can only be inverted if a glue logic
function block with lower execution order in the same cycle time is available.
Similar, the output signal can only be inverted if a glue logic function block with
higher execution order in the same cycle time is available. Up to two input signals
and two output signals can be inverted for glue logic blocks in the same cycle time.
Even though current is injected to the IED and the IED is connected to PCM600 in
online mode, the signal value in ACT is shown as zero.
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Figure 32 shows an example how the drop down list
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650 series
Engineering manual