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LD Language Elements
132
SR2MAN01 11/2007
Illustration:
Configuration from the front panel of the smart relay, of the hysteresis-type
comparator with constant reference value:
In this case: The comparison condition is verified when the power to the input
terminal Ie is between 2.5 Vand 5.5 V.
Configuration of a single comparator from the front panel:
(If neither x1 nor x2 are not set to R, parameter R does not appear.
Description:
Number Parameter Description
1 Type of comparison
The number that follows ANALOG corresponds
to the selected comparison operator.
2 Comparison formula Formula used for comparison.
3 Parameter lock Locking prevents locked parameters from
being modified from the front panel of the
smart relay using the PARAMETERS menu.
4 Parameters of the comparison
formula
Parameters of the comparison formula.
2
Menu / OK
-+
x 1 - H ≤ ξ 2 ≤ x 1 + H
A 1 A N A L O G 7
R = 4 . 0 x 1 = R
H = 1 . 5 x 2 = I e
2
3
4
5
1
2
Menu / OK
6 +
x 1 ≤ x 2
A 1 A N A L O G 5
x 1 = I d
x 2 = I e
2
3
4
1