24
Andover Controls
Input Voltage Range Selection Switches (UI-8-10-10V Only)
The UI-8-10-10V module allows you to choose from two input voltage ranges. Selection
is accomplished by using a switch arrangement that is similar to the operation of the pull-
up resistor switches. The Voltage Range switches allow you to select a range (0-5 V) or
(0-10 V) for each input.
The 0-5V range allows connections to signals that do not exceed 5.00V. The 0-10V range
allows connection to signals up to 10.00V. In this mode the circuit actually uses the same
input measuring circuit as the 0-5V range, however, it divides the voltage present by two
thereby limiting the internal circuitry to 0-5V. When you read a 0-10V input the actual
reading will be 0-5V. You must adjust your readings for the higher range via formula.
Switching to 10V inputs dramatically lowers the impedance of the input to
4.4 K
Ω
.
This small 8-position switch module is located to the right of the pull-up selector switch
and is accessible from the front of the module when the door is opened.
UI-8-10
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