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The key settings for 4-20mA sensors connected to the 4-20mA input are:
Measurement Type: Analog
Analog Type: 4-20mA
The built-in 4-20mA connection has an internal 200 Ohm load consisting of transient protection and a
precision 100 Ohm sense resistor. External load resistors should also be 100 Ohm for the system to
operate down to voltages between 10-12VDC. In some cases, the 4-20mA sensor may need supply
voltages > 12VDC to operate. The supply voltage needs to be greater than the minimum voltage the
sensor requires plus the maximum voltage across the load resistance (2V for 100 ohms).
The key settings for 4-20mA sensor connected to A and B are:
Measurement Type: Analog
Analog Type: 0-5V A or B.
Add a 100 Ohm load resistor between A or B and Signal ground.
5.12
Connecting Status Sensors
A status output is a switch that is open or closed. Up to two status outputs are supported using either of
the digital inputs (DIN#1 or DIN#2). An internal pull-up resistor on DIN#1 or DIN#2 provides the excitation
voltage for the switch.
Measurement result will be zero when the switch is open and one when the switch is closed.
Summary of Contents for SUTRON XLINK 100
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