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IDEC SmartRelay functions
193
IDEC SmartRelay Manual
Functional description
The function fetches the analog signal of input Ax.
This value is multiplied by the value of the A (gain) parame-
ter, and parameter B (offset) is then added to the product, i.e.
(Ax • gain) + offset = actual value Ax.
The actual value Ax is output at AQ.
Analog output
If you interconnect this special function with a real analog
output, note that the analog output can only process values
between 0 and 1000. To do this, you may need to connect
an additional amplifier between the analog output of the spe-
cial function and the real analog output. Using this amplifier,
you standardize the output range of the special function to a
value range of 0 to 1000.
Scaling an analog input value
You can influence the analog input value of a potentiometer
by interconnecting an analog input with an analog amplifier
and an analog memory marker.
• Scale the analog value at the analog amplifier for further
use.
• Connect, for example, the time base for parameter T of a
time function (e.g. On-/Off-delay, Chapter 4.4.3) or the on
and/or off limit specification of an up/down counter
(Chapter 4.4.13) to the scaled analog value.
For more information with programming examples refer to
the online help for WindLGC.
Preset of the Par parameter
The gain and offset parameters are used to adapt the sen-
sors to the relevant application.
View in programming mode (example):
B3 +
A
=02.50
B
=-00300
p
=0
Gain
Offset
Decimals in the message text
Courtesy of Steven Engineering, Inc. ● 230 Ryan Way, South San Francisco, CA 94080-6370 ● General Inquiries: (800) 670-4183 ● www.stevenengineering.com