IDEC SmartRelay functions
IDEC SmartRelay Manual 125
4.3.6 Calculating the gain and offset of analog values
A sensor is connected to the analog input and converts a
process variable into an electrical signal. This value of signal
lies within the typical range of this sensor.
IDEC SmartRelay always converts the
electrical signals at
the analog input into digital values from 0 to 1000.
A voltage of 0 to 10 V at input AI is transformed internally into
a range of
values from 0 to 1000. An input voltage exceeding
10 V is shown as internal value 1000.
Because you cannot always process the range of values
from 0 to 1
000 as predetermined by IDEC SmartRelay, you
can multiply the digital values by a gain factor and then shift
the zero of the range of values (offset). This allows you to
output an analog value to the IDEC SmartRelay display,
which is proportional to the actual process variable.
Parameter Minimum Maximum
Input voltage (in V) 0 10
Internal value 0 1000
Gain -10.00 +10.00
Offset -10000 +10000
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