Internal
Hysteresis for
equal band
Equal Band
EqualBandHigh
EqualBandLow
REF or SetValue
INEQUAL Reset / INHIGH Set INEQUAL Set / INHIGH Reset
INEQUAL Reset / INLOW Set INEQUAL Set / INLOW Reset
IEC15000261 V1 EN-US
Figure 528: 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.
15.17.7 Technical data
GUID-62792FCB-B436-4034-9A08-C9FF918FF547 v1
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.
GUID-3FDD7677-1D86-42AD-A545-B66081C49B47 v1
Table 718: REALCOMP Technical data
Function Accuracy
Operate value,
EqualBandHigh
and EqualBandLow
±0.5% of set value
Reset value,
EqualBandHigh
> 0.1% of set RefPrefix
Reset value,
EqualBandLow
< 0.1% of set RefPrefix
Table 719: Number of REALCOMP instances
Function
Quantity with cycle time
3 ms 8 ms 100 ms
REALCOMP 4 4 4
1MRK 502 066-UUS B Section 15
Logic
1007
Technical manual
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