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Short description
I/O module 2 full-bridge strain gauge inputs
General information
B&R ID code 0x8820
Status indicators Channel status, operating state, module status
Module run/error Yes, using LED status indicator and software
Open circuit Yes, using LED status indicator and software
Input Yes, using LED status indicator and software
Connection type
X2X Link M12, B-coded
Inputs 4x M12, A-coded
I/O power supply M8, 4-pin
Power consumption
Bus 0.75 W
Internal I/O 2.4 W
CE Yes
ATEX Zone 2, II 3G Ex nA IIA T5 Gc
IP67, Ta = 0 - Max. 60°C
TÜV 05 ATEX 7201X
UL cULus E115267
Industrial control equipment
HazLoc cCSAus 244665
Process control equipment
for hazardous locations
Class I, Division 2, Groups ABCD, T5
KC Yes
I/O power supply
Nominal voltage 24 VDC
Voltage range 18 to 30 VDC
Integrated protection Reverse polarity protection
Full-bridge strain gauge
Strain gauge factor 2 to 256 mV/V, configurable using software
Connection 4- or 6-wire connections
Input type Differential, used to evaluate a full-bridge strain gauge
Digital converter resolution 24-bit
Conversion time Depends on the configured data output rate
Data output rate 2.5 to 7,500 samples per second, configurable using software (fDATA)
Input filter
Cutoff frequency 5 kHz
Order 3
Slope 60 dB
ADC filter characteristics Sigma-delta, see section "Filter characteristics of the sigma-delta A/D converter"
Operating range / Measurement sensor 85 to 5,000 Ω
Influence of cable length See section "Calculation example", sensor cable length: Max. 30 m
Input protection RC protection
Common-mode range 0 to 3 VDC
Permissible input voltage range (with regard to the potential strain gauge GND) on inputs "Input +" and "Input -"
Insulation voltage between input and bus 500 Veff
Conversion procedure Sigma-delta
Output of digital value
Broken bridge supply line Value approaching 0
Broken sensor line Value approaching ±end value (status bit "Line status monitoring" is set in register "Module status")
Valid range of values 0xFF800001 to 0x007FFFFF (-8,388,607 to 8,388,607)
Strain gauge supply
Voltage 5.5 VDC / Max. 65 mA
Short-circuit and overload resistant Yes
Voltage drop for short-circuit protection Max. 0.2 VDC at 65 mA and 25°C
LSB value (16-bit)
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 (24-bit)
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
Electrical isolation
Bus isolated from analog input and strain gauge supply voltage

Channel not isolated from I/O power supply
Operating conditions
Mounting orientation
Horizontal Yes
Vertical Yes
Installation elevation above sea level
0 to 2000 m No limitation
>2000 m Reduction of ambient temperature by 0.5°C per 100 m
Degree of protection per EN 60529 IP67
Ambient conditions
Operation -25 to 60°C
Derating -
Storage -40 to 85°C
Transport -40 to 85°C
Mechanical properties
Width 53 mm
Height 85 mm
Depth 42 mm
Weight 190 g
Torque for connections
M8 Max. 0.4 Nm
M12 Max. 0.6 Nm
Material number:
  • 2 full-bridge strain gauge inputs
  • Data output rate configurable from 2.5 Hz to 7.5 kHz

This module is equipped with 2 inputs for evaluating full-bridge strain gauges and works with both 4-wire and 6-wire strain gauge load cells. The concept applied by the module requires compensation in the measurement system. This compensation eliminates the absolute uncertainty in the measurement circuit, such as component tolerances, effective bridge voltage or zero point offset. The measurement precision refers to the absolute (compensated) value, which will only change as a result of changes in the operating temperature.

Automation Studio HW Upgrades Version (Date) Download
V2.6 HW Upgrade (X67AI2744) EXE / 594 KB
V3.0 HW Upgrade (X67AI2744) EXE / 593 KB
V4.0 HW Upgrade (X67AI2744) EXE / 3 MB
Certificates Version (Date) Download
E115267 UL CoC X67 PDF / 84 KB
X20, X67 KC certificates PDF / 6 MB
Documentation Version (Date) Download
Data sheet X67AI2744 PDF / 2 MB
X67 System User´s Manual PDF / 19 MB
E-CAD (Electro or EPLAN Templates) Version (Date) Download
X67 EPLAN P8 EXE / 85 MB
X67 EPLAN P8 from V2.4 EXE / 105 MB
M-CAD (Mechan. Templates) Version (Date) Download
3D File DXF/STEP X67 ZIP / 1 MB

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