RTCU LX4 pro Technical Manual V1.00
Advanced Industrial M2M/IoT Gateway
Logic IO ApS.
Ph: (+45) 7625 0210
Holmboes Allé 14
Fax: (+45) 7625 0211
8700 Horsens
Page 16 of 39
Email: [email protected]
Denmark
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
Description
22
AIN1
Analog input 1
23
AIN2
Analog input 2
24
AIN3
Analog input 3
25
AIN4
Analog input 4
26
AGND
Analog Ground
Specification for each analog input (voltage mode):
Min.
Typ.
Max.
Unit
Voltage
0
-
10
VDC
Protected against transients and
low-pass filtered
Resolution
-
-
12
Bit
Precision
-
0.5
0.6
%FSR
Cut-off frequency
-
1
-
kHz
Input impedance
-
40
-
kΩ
Specification for each analog input (current mode):
Min.
Typ.
Max.
Unit
Current
0
-
20
mA
Protected against transients and
low-pass filtered
Resolution
-
-
12
Bit
Precision
-
0.5
0.6
%FSR
Cut-off frequency
-
1
-
kHz
Input impedance
-
504
-
Ω
