Less Than Check For Real Signals Ltr - ABB RELION 630 Series Technical Manual

Section 3
Basic functions
3.32.1.17
156
Functionality
The function compares the integer inputs INT_IN1 and INT_IN2 and activates the
binary output OUTPUT, if INT_IN1 is greater than or equal to INT_IN2.
If INT_IN1 ≥ INT_IN2, OUTPUT = 1, else OUTPUT = 0.
Logic function blocks do not have the hysteresis feature. Oscillating
outputs should be avoided when comparing analog signals that have
very closely varying values.
Signals
Table 156: GEI Input signals
Name Type
INT_IN1 INTEGER
INT_IN2 INTEGER
Table 157: GEI Output signals
Name Type
OUTPUT BOOLEAN

Less than check for real signals LTR

Function block
GUID-853AED74-6085-4A2C-AA93-8890593A483C V1 EN
Figure 91: Function block
Functionality
The function compares the real inputs REAL_IN1 and REAL_IN2 and activates the
binary output OUTPUT, if REAL_IN1 is less than REAL_IN2.
If REAL_IN1 < REAL_IN2, OUTPUT = 1, else OUTPUT = 0.
Logic function blocks do not have the hysteresis feature. Oscillating
outputs should be avoided when comparing analog signals that have
very closely varying values.
Default Description
0 Integer input 1
0 Integer input 2
Description
Binary output
PML630/Compact Load-Shedding Solution
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