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RTCU LX4 pro Technical Manual V1.00
Advanced Industrial M2M/IoT Gateway
Analog Inputs
The RTCU LX4 pro has four analog inputs, which can be configured individually to work either as
voltage or current measurement inputs using the configuration jumpers. The range in voltage mode is
0..10 VDC, and in current mode 0..20mA.
The conversion resolution is 12 bit.
The input signal is connected between AINx and AGND. Therefore, 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 significant fast-changing signals routed
parallel to the analog signals.
The inputs are low-pass filtered, ESD- and transient protected.
By default, the inputs are configured as voltage inputs. For replacement and configuration of the
hardware jumpers inside the device, please refer to the device configuration guide in Appendix D.
Analog input pins
Pin
Name
22
AIN1
23
AIN2
24
AIN3
25
AIN4
26
AGND
Specification for each analog input (voltage mode):
Voltage
Resolution
Precision
Cut-off frequency
Input impedance
Specification for each analog input (current mode):
Current
Resolution
Precision
Cut-off frequency
Input impedance
Logic IO ApS.
Holmboes Allé 14
8700 Horsens
Denmark
Description
Analog input 1
Analog input 2
Analog input 3
Analog input 4
Analog Ground
Min.
Typ.
Max.
0
-
10
-
-
12
-
0.5
0.6
-
1
-
-
40
-
Min.
Typ.
Max.
0
-
20
-
-
12
-
0.5
0.6
-
1
-
-
504
-
Unit
VDC
Protected against transients and
Bit
low-pass filtered
%FSR
kHz
kΩ
Unit
mA
Protected against transients and
Bit
low-pass filtered
%FSR
kHz
Ω
Page 16 of 39
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Fax: (+45) 7625 0211
Email: support@logicio.com
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