ABB RELION REX640 - 3.22.5.2 Functionality; 3.22.5.3 Signals

3.22.5.2 Functionality
The real equal comparator function EQR compares the real input REAL_IN1 with the
real input REAL_IN2 and activates the binary output OUT if REAL_IN1 is within the
region of REAL_IN2 + TOLR and REAL_IN2 –TOLR, that is, if REAL_IN1 ≥ (REAL_IN2
– TOLR) and REAL_IN1 ≤ (REAL_IN2 + TOLR), OUT = 1, else OUT = 0.
If inputs REAL_IN1 or REAL_IN2 are outside the range, then OUT is set to 0.
Equal region
Equal region
REAL_IN2+TOLR
REAL_IN2-TOLR
REAL_IN2
Figure 177: Region of EQR comparison
EQR requires a positive value for TOLR, otherwise it may not function
properly. The TOLR value can be set using SETRGAPC.
EQR function blocks do not have the hysteresis feature. Oscillating
outputs should be avoided when comparing analog signals that have
closely varying values.
3.22.5.3 Signals
Table 323: EQR Input signals
Name Type Default Description
REAL_IN1 FLOAT32 0 Real input 1
REAL_IN2 FLOAT32 0 Real input 2
TOLR FLOAT32 0 Tolerance for compar-
ison
Table 324: EQR Output signals
Name Type Description
OUT BOOLEAN Output value
1MRS759142 F Basic functions
REX640
Technical Manual
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