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Short description
I/O module 4 full-bridge strain gauge inputs
General information
B&R ID code 0xE286
Status indicators Channel status, operating state, module status
Diagnostics
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
Power consumption
Bus 0.01 W
Internal I/O 1 W
Additional power dissipation caused by actuators (resistive) [W] +1.43
Certifications
CE Yes
EAC Yes
UL cULus E115267
Industrial control equipment
ATEX Zone 2, II 3G Ex nA nC IIA T5 Gc
IP20, Ta (see X20 user's manual)
FTZÚ 09 ATEX 0083X
Full-bridge strain gauge
Strain gauge factor 2 to 256 mV/V, configurable using software
Connection 4-wire connections
Input type Differential, used to evaluate a full-bridge strain gauge
Digital converter resolution 24-bit
Conversion time 200 µs
Data output rate 5000 samples per second and per channel (fDATA)
Input filter
Cutoff frequency 2.5 kHz
Order 3
Slope 60 dB
ADC filter characteristics Sigma-delta, see section "Filter"
Operating range / Measurement sensor 85 to 5000 Ω
Influence of cable length Twisted and shielded conductors, cable length as short as possible, cable routing separate from load circuits, without intermediate terminal to sensor
Input protection RC protection
Common-mode range 0.6 to 3.8 VDC
Permissible input voltage range (with regard to the potential strain gauge GND) on inputs "Input +" and "Input -"
Isolation 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 "Open circuit" 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 per channel
Short-circuit and overload resistant Yes
Quantization
LSB value
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 35 ppm/°C
Max. offset drift 15 ppm/°C
Nonlinearity <10 ppm
Electrical properties
Electrical isolation Bus isolated from analog input and strain gauge supply voltage
Channel not isolated from channel and 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 IP20
Ambient conditions
Temperature
Operation
Horizontal mounting orientation -25 to 60°C
Vertical mounting orientation -25 to 50°C
Derating See section "Hardware configuration"
Storage -40 to 85°C
Transport -40 to 85°C
Relative humidity
Operation 5 to 95%, non-condensing
Storage 5 to 95%, non-condensing
Transport 5 to 95%, non-condensing
Mechanical properties
Note Order 1x terminal block X20TB1F separately.
Order 1x bus module X20BM11 separately.
Spacing 12.5 +0.2 mm
Material number:
X20AIB744
Description:
  • 4 full-bridge strain gauge inputs
  • 5 kHz data output rate for all 4 channels
  • Independently configurable strain gauge factor and filter level for each of the 4 channels

This module works with 4-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 offset. The measurement precision refers to the absolute (compensated) value, which will only change as a result of changes in the operating temperature.

Mandatory Accessories
Bus modules
X20BM11 X20 bus module, 24 VDC keyed, internal I/O supply continuous
X20BM15 X20 bus module, with node number switch, 24 VDC keyed, internal I/O supply continuous
Terminal blocks
X20TB1F X20 terminal block, 16-pin, 24 VDC keyed
Automation Studio HW Upgrades Version (Date) Download
V3.0 HW Upgrade (X20AIB744) EXE / 5 MB
V4.0 HW Upgrade (X20AIB744) EXE / 2 MB
Certificates Version (Date) Download
E115267 UL CoC X20 PDF / 825 KB
FTZU 09 ATEX 0083X PDF / 697 KB
Documentation Version (Date) Download
Datasheet X20AIB744 PDF / 2 MB
X20 System User´s Manual PDF / 50 MB
E-CAD (Electro or EPLAN Templates) Version (Date) Download
X20 EPLAN P8 from V2.4 EXE / 161 MB
M-CAD (Mechan. Templates) Version (Date) Download
3D File DXF/STEP X20 Electronic module ZIP / 10 KB
3D File STEP X20 I/O-Slice ZIP / 872 KB
Dimensions PDF X20 Electronic module PDF / 3 KB

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