Technical Data - ABB Relion 650 Series Technical Manual

Section 9
Logic
9.17.7
350
INEQUAL Reset / INHIGH Set
EqualBandHigh
Equal Band
REF or SetValue
EqualBandLow
INEQUAL Reset / INLOW Set
IEC15000261 V1 EN-US
Figure 170: Operation principle of REALCOMP
When EnaAbs is set as absolute comparison and SetValue is set less
than 0.2% of the set unit then INLOW output will never pickups.
During the above mentioned condition, due to marginal value for
avoiding oscillations of function outputs, the INLOW output will
never set.

Technical data

REALCOMP function can compare the values from milli value level to giga value
level and the maximum expectable accuracy level from the function is 10 µ.
Table 274: Number of REALCOMP instances
Function
3 ms
REALCOMP 10
INEQUAL Set / INHIGH Reset
Quantity with cycle time
8 ms
10
1MRK 511 424-UEN B
Internal
Hysteresis for
equal band
INEQUAL Set / INLOW Reset
IEC15000261-1-en.vsdx
GUID-62792FCB-B436-4034-9A08-C9FF918FF547 v1
GUID-3FDD7677-1D86-42AD-A545-B66081C49B47 v4
100 ms
10
Bay control REC650 2.2 IEC
Technical manual