Rievtech ELC Series - Page 130

EN
Programmable Relay ● User Manual for ELC, EXM and PR Series 130 2020 v6.0 ● © Rievtech Co.,
Ltd. ● www.rievtech.com
A 0 to 1 transition at input En saves the value of the signal
at the analogue input Ax. This saved process variable is
referred to as “Aen”.
Both the analogue actual values Ax and Aen are multiplied
by the value of parameter A (gain), and parameter B (offset)
is then added to the product, i.e.
(Ax ∙ gain) + offset = Actual value Aen, when input En
changes from 0 to 1, or
(Ax ∙ gain) + offset = Actual value Ax.
Output Q is set when the signal at input En = 1 and if the
actual value of input Ax is out of range of Aen ± Delta.
Output Q is reset, when the actual value of input Ax lies
within the range of Aen +- Delta, or when the signal at
input En changes to lo.
Analogue Differential Trigger
Description of function
The output is set and reset depending on a configurable
threshold and a differential value.
Connection
Description
Input Ax
You apply the analogue signal to
be analysed at input Ax.
Use the analogue inputs AI1...AI8,
the analogue outputs AQ1 and
AQ2.
0 - 10 V is proportional to 0 - 1000
(internal value).
Parameter
A: Gain
Range of values: ± 10.00
B: Zero offset
The range of values: ± 10,000
On: On threshold
The range of values: ±20,000
Delta: Differential value for
calculating the off parameter
The range of values: ± 20,000
p: Number of decimals
Range of values: 0, 1, 2, 3
Output Q
Q is set or reset, depending on the
threshold and difference values.
Parameter p (number of decimals)
Applies only to the display of On, Off and Ax values in a
message text.
Does not apply to the comparison of On and Off values!
(The compare function ignores the decimal point.)
Timing diagram A: Function with a negative difference
Delta