Settings - ABB RES670 Technical Manual

Section 15
Logic
15.17.5
Table 361: REALCOMP Group settings (basic)
Name Values (Range)
EnaAbs Signed
Absolute
RefSource Set Value
Input REF
SetValue -999.999 - 999.999
SetValPrefix milli
unit
kilo
Mega
Giga
EqualBandHigh 0.10 - 10.00
EqualBandLow 0.10 - 10.00
15.17.6
484

Settings

Unit Step
- -
- -
- 0.001
- -
% 0.01
% 0.01
Operation principle
The comparison can be done in two ways,
1. Between 2 inputs, INPUT and REF
2. Between INPUT and the SetValue setting
The selection of reference value for comparison can be done through setting RefSource.
If RefSource is selected as Input REF then the reference value for comparison is taken
from second input signal (REF). If RefSource is selected as Set Value then the reference
value for comparison is taken from setting (SetValue).
Generally the inputs to the function are in SI units, but when the comparison is to be
done with respect to set level, then the user can set a value in any unit out of Milli to
Giga range in setting SetValue. The unit can be separately set with setting RefPrefix.
Internally the function handles the reference value for comparator as
SetValue*RefPrefix.
Additionally the comparison can be done either between absolute values or signed
values and it depends on the setting EnaAbs. If EnaAbs is selected as Absolute then
both input and reference value is converted into absolute values and then comparison is
done. If EnaAbs is selected as Signed then the comparison is done without absolute
conversion.
Default Description
Signed Selection for absolute or signed comparison
Set Value Selection for reference value either input or
setting
0.001 Set value for reference
unit Multiplication factor for SetValue
0.50 Equal band high limit in % of reference value
0.50 Equal band low limit in % of reference value
Phasor measurement unit RES670 2.2 ANSI
1MRK 511 408-UUS A
PID-6897-SETTINGS v2
GUID-3FA699A8-D076-4E5E-BCB8-C6B7907573D1 v2
Technical manual