Real Less Than Or Equal Comparator Ler - ABB RELION REX640 Technical Manual

Protection and control

Hide thumbs Also See for RELION REX640:

Table of Contents

Basic functions

Table 327: GER Input signals

Table 328: GER Output signals

Real less than or equal comparator LER

Function block

Figure 182: Function block

Functionality

The real less than or equal comparator function LER compares real input REAL_IN1

with the real input REAL_IN2 and activates the binary output OUT if REAL_IN1 is

equal to or less than REAL_IN2 + TOLR or less than REAL_IN2 input. That is, if

REAL_IN1 ≤ (REAL_IN2 + TOLR) or REAL_IN1 < (REAL_IN2), OUT = 1, else OUT = 0.

GER function blocks do not have the hysteresis feature. Oscillating

outputs should be avoided when comparing analog signals that have

closely varying values.

LER function blocks do not have the hysteresis feature. Oscillating

outputs should be avoided when comparing analog signals that have

closely varying values.

Real input 1

Real input 2

Tolerance for compar-

Output value

1MRS759142 F

Technical Manual