Comparator For Real Inputs - Realcomp - ABB REC670 Applications Manual

Section 16
Logic
16.14
16.14.1
16.14.2
16.14.3
506

Comparator for real inputs - REALCOMP

Identification
Function description
Comparator for real inputs
Application
The function gives the possibility to monitor the level of real values in the system
relative to each other or to a fixed value. It is a basic arithmetic function that can be
used for monitoring, supervision, interlocking and other logics.
Setting guidelines
Setting procedure on the IED:
EnaAbs: This setting is used to select the comparison type between signed and absolute
values.
• Absolute: Comparison is performed with absolute values of input and reference.
• Signed: Comparison is performed with signed values of input and reference.
RefSource: This setting is used to select the reference source between input and setting
for comparison.
• Input REF: The function will take reference value from input REF
• Set Value: The function will take reference value from setting SetValue
SetValue: This setting is used to set the reference value for comparison when setting
RefSource is selected as Set Value. If this setting value is less than 0.2% of the set unit
then the output INLOW will never pickup.
RefPrefix: This setting is used to set the unit of the reference value for comparison
when setting RefSource is selected as SetValue. It has 5 unit selections and they are
Milli, Unity, Kilo, Mega and Giga.
EqualBandHigh: This setting is used to set the equal condition high band limit in % of
reference value. This high band limit will act as reset limit for INHIGH output when
INHIGH.
IEC 61850 IEC 60617
identification identification
REALCOMP Real<=>
1MRK 511 401-UUS A
GUID-0D68E846-5A15-4C2C-91A2-F81A74034E81 v1
ANSI/IEEE C37.2
device number
GUID-5F7B1683-9799-4D27-B333-B184F8861A5B v1
GUID-DE69FF5B-7D34-4A30-9060-214E98BFF798 v2
Bay control REC670 2.2 ANSI
Application manual