Analog I/O; Analog Inputs - Logic IO RTCU NX-900 Technical Manual

RTCU NX-900 Technical Manual V1.01
Advanced M2M/IIoT Gateway

Analog I/O

Analog inputs

The RTCU NX-900 device has four analog inputs which can be configured individually to work
either as voltage or current measurement inputs by using the configuration jumper. The range in
voltage mode is 0-10VDC and in current mode 0-20mA.
The conversion resolution is 12 bit.
By default the analog inputs are configured as voltage inputs and are converted to a digital value
with a resolution of 10-bit before being presented to the application (0..1023). The application can
change the resolution to the full 12 bit (0..4095). Please consult the RTCU IDE for further details.
The input signal is connected between AINx and AGND. AGND must be connected to the
reference of the connected equipment. Please be aware that deviations may occur, as the system is
very noise sensitive. Avoid long, unshielded wires and high current, fast changing signals routed
parallel to the analog signals.
The inputs are low-pass filtered, ESD- and transient-protected.
As default the inputs are configured as voltage inputs. For placement and configuration of the
hardware jumpers inside the device, please refer to the device configuration guide in Appendix A.
Analog input terminals
Terminal Name Description
AI1 Analog input 1 – Voltage
Analog input 1 – Current
AI2 Analog input 2 – Voltage
Analog input 2 – Current
AI3 Analog input 3 – Voltage
Analog input 3 – Current
AI4 Analog input 4 – Voltage
Analog input 4 – Current
AGND Analog ground
AGND Analog ground
Logic IO ApS.
Holmboes Allé 14
8700 Horsens
Denmark
Jumper Setting
JPAI1 not installed (default)
JPAI1 installed
JPAI2 not installed (default)
JPAI2 installed
JPAI3 not installed (default)
JPAI3 installed
JPAI4 not installed (default)
JPAI4 installed
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