X20AI1744 - Analog input module

X20AI1744 - Analog input module

new in sealed original packaging
Normal price €537,25
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  • 1 full bridge strain gauge input
  • Data output rate adjustable from 0.1 Hz to 7.5 kHz
  • Special operating modes (synchronous mode and multiple sampling)
  • Filter level adjustable

The module works with both 4-wire and 6-wire strain gauge cells. The concept of the module requires an adjustment in the measuring system. This adjustment compensates or eliminates the absolute inaccuracies in the measuring circuit (such as e.g.: component tolerances, effective bridge voltage or zero point shift). The measurement accuracy based on an absolute (adjusted) value only changes due to the negative influence of a change in the operating temperature.


Short description

I/O module 1 full bridge strain gauge input


B&R ID code 0x1CDE
Status displays Channel status, operating status, module status
Module Run/Error Yes, via status LED and SW status
Wire break Yes, via status LED and SW status
Input Yes, via status LED and SW status
Power consumption
Bus 0.01W
I/O internal 0.5W
Additional power loss due to actuators (resistive) [W] max.+0.36 
CE Yes
ATEX Zone 2, II 3G Ex nA nC IIA T5 Gc
IP20, Ta (see X20 user manual)
FTZÚ 09 ATEX 0083X
UL cULus E115267
Industrial Control Equipment
HazLoc cCSAus 244665
Process Control Equipment
for Hazardous Locations
Class I, Division 2, Groups ABCD, T5
KC Yes

DMS full bridge

Bridge factor 2 to 256 mV/V, adjustable via software
Connection 4 or 6-wire technology
Input type Differential, for evaluating a strain gauge full bridge
Digital converter resolution 24 bits
Conversion time Depending on the set data output rate
Data output rate 0.1 - 7500 samples per second, adjustable via software (fDATA)
Input filter
Corner frequency 5 kHz
Order 3
Slope 60 dB
Filter characteristics ADC Sigma-Delta, see section "Filter characteristics of the Sigma-Delta A/D converter"
Working area / measurement sensor 85 to 5000 Ω
Influence of cable length See section "Calculation example"
Input protection RC protection
Common mode range 0 to 3 VDC
Permissible input voltage range (in relation to the potential DMS GND) at the inputs "Input +" and "Input -"
Isolation voltage between input and bus 500 Vrms
Conversion procedure Sigma Delta
Output of the digital value
Break of the bridge supply line Value approaches 0
Break of the sensor cable Value approaches ±end value (status bit "Line monitoring" in the "Module status" register is set)
valid value range 0xFF800001 to 0x007FFFFF (-8,388,607 to 8,388,607)
Bridge supply
Voltage 5.5 VDC / max. 65 mA
short-circuit and overload proof Yes
Voltage drop at short circuit protection max.0.2 VDC at 65 mA and 25°C
LSB value (related to 16 bits)
2 mV/V 336 nV
4 mV/V 671 nV
8 mV/V 1.343 µV
16 mV/V 2.686 µV
32 mV/V 5.371 μV
64 mV/V 10.74 μV
128 mV/V 21.48 μV
256 mV/V 42.97 μV
LSB value (related to 24 bits)
2 mV/V 1.31 nV
4 mV/V 2.62 nV
8 mV/V 5.25 nV
16 mV/V 10.49 nV
32 mV/V 20.98 nV
64 mV/V 41.96 nV
128 mV/V 83.92 nV
256 mV/V 167.85 nV
max. Gain drift 12 ppm/°C 
max.Offset drift 2 ppm/°C 
Nonlinearity <10 ppm 

Electrical properties

Potential separation Bus to analog input and bridge supply voltage separated
Channel to I/O supply not separated

Using conditions

Installation position
horizontal Yes
vertical Yes
Installation altitude above sea level (sea level)
0 to 2000 m No restriction
>2000 m Reduction of the ambient temperature by 0.5°C per 100 m
Protection class according to EN 60529 IP20

Ambient Conditions

horizontal installation position -25 to 60°C
vertical installation position -25 to 50°C
Derating See section "Hardware configuration"
Storage -40 to 85°C
Transportation -40 to 85°C
Operation 5 to 95%, non-condensing
Storage 5 to 95%, non-condensing
Transportation 5 to 95%, non-condensing

Mechanical properties

Note Order field terminal 1x X20TB12 separately
Order bus module 1x X20BM11 separately
Grid dimension 12.5 +0.2mm
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