IDEC SmartRelay installation and wiring
33
IDEC SmartRelay Manual
Connecting a potentiometer to inputs I7 / I8
To allow you to achieve 10 V as the maximum value when
you completely turn the potentiometer once, you must con
-
nect a series resistor on the potentiometer’s input side re-
gardless of the input voltage (see figure below).
We suggest the following sizes of potentiometers and asso-
ciated series resistors:
When using a potentiometer and 10 V input voltage as the
maximum value, you must ensure that with a connected in
-
put voltage of 24 V, 14 V must release via the series resistor
so that a maximum of 10 V are supplied when you turn the
potentiometer one full rotation. With a voltage of 12 V, this
can be neglected.
Note
The FL1B-J2B2 expansion module provides additional analog in-
puts.
Always use twisted and shielded cables for analog signals, and
keep these as short as possible.
Voltage Potentiometer Series Resistor
12 V 5 kΩ−
24 V 5 kΩ 6.6 kΩ
Courtesy of Steven Engineering, Inc. ● 230 Ryan Way, South San Francisco, CA 94080-6370 ● General Inquiries: (800) 670-4183 ● www.stevenengineering.com
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