IDEC SMARTRELAY User Manual page 202

IDEC SmartRelay functions
4.4 Special functions list - SF
Timing diagram
Functional description
A 0 to 1 transition at input En saves the value of the signal at the analog input Ax. This saved
process variable is referred to as Aen .
Both the analog actual values Ax and Aen are multiplied by the value at parameter A (gain),
and parameter B (offset) is then added to the product:
(Ax gain)
(Ax gain)
Output
range of Aen -
Output
, or when the signal at input En changes to lo.
1
Setting the Par parameter
The gain and offset parameters are used to adapt the used sensors to the respective
application.
View in programming mode:
View in parameter assignment mode (example):
190
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offset Actual value Aen, when input En changes from 0 to 1, or
offset Actual value Ax.
is set when the signal at input En
to Aen .
2 1
is reset, when the actual value at input Ax lies within the range of Aen -
1 and if the actual value at input Ax is out of
to Aen
2
IDEC SmartRelay Manual