B&R X67AI2744
2 full-bridge strain gauge inputs Data output rate configurable from 2.5 Hz to 7.5 kHz The 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 calibration in the measurement system. This calibration compensates or eliminates the absolute inaccuracies in the measurement circuit (e.g. component tolerances, effective bridge voltage or zero offset). The measuring accuracy related to an absolute (calibrated) value only changes due to the negative influence of a change in the operating temperature.
Lifecycle & replacement
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Technical specifications
Short description
| I/O module | 2 full-bridge strain gauge inputs |
General information
| Diagnostics / Module run/error | Yes, using LED status indicator and software |
| Diagnostics / Open circuit | Yes, using LED status indicator and software |
| Diagnostics / Input | Yes, using LED status indicator and software |
| Connection type / X2X Link | M12, B-coded |
| Connection type / Inputs | 4x M12, A-coded |
| Connection type / I/O power supply | M8, 4-pin |
| Power consumption / Bus | 0.75 W |
| Power consumption / Internal I/O | 2.4 W |
| Certifications / CE | Yes |
| Certifications / UKCA | Yes |
| Certifications / CRA (Cyber Resilience Act) | In preparation |
| Certifications / ATEX | Zone 2, II 3G Ex nA IIA T5 Gc IP67, Ta = 0 - Max. 60°C TÜV 05 ATEX 7201X |
| Certifications / UL | cULus E115267 Industrial control equipment |
| Certifications / HazLoc | cCSAus 244665 Process control equipment for hazardous locations Class I, Division 2, Groups ABCD, T5 |
| Certifications / KC | Yes |
| B&R ID code | 0x8820 |
| Status indicators | Channel status, operating state, module status |
I/O power supply
| Nominal voltage | 24 VDC |
| Voltage range | 18 to 30 VDC |
| Integrated protective function | Reverse polarity protection |
Full-bridge strain gauge
| Input filter / Cutoff frequency | 5 kHz |
| Input filter / Order | 3 |
| Input filter / Slope | 60 dB |
| Output of digital value / Broken bridge supply line | Value approaching 0 |
| Output of digital value / Broken sensor line | Value approaching ±end value (status bit "Line monitoring" is set in register "Module status") |
| Output of digital value / Valid range of values | 0xFF800001 to 0x007FFFFF (-8,388,607 to 8,388,607) |
| Strain gauge supply / Voltage | 5.5 VDC / Max. 65 mA |
| Strain gauge supply / Short-circuit and overload-proof | Yes |
| Strain gauge supply / Voltage drop for short-circuit protection | Max. 0.2 VDC at 65 mA and 25°C |
| Quantization / LSB value (16-bit) / 2 mV/V | 336 nV |
| Quantization / LSB value (16-bit) / 4 mV/V | 671 nV |
| Quantization / LSB value (16-bit) / 8 mV/V | 1.343 µV |
| Quantization / LSB value (16-bit) / 16 mV/V | 2.686 µV |
| Quantization / LSB value (16-bit) / 32 mV/V | 5.371 µV |
| Quantization / LSB value (16-bit) / 64 mV/V | 10.74 µV |
| Quantization / LSB value (16-bit) / 128 mV/V | 21.48 µV |
| Quantization / LSB value (16-bit) / 256 mV/V | 42.97 µV |
| Quantization / LSB value (24-bit) / 2 mV/V | 1.31 nV |
| Quantization / LSB value (24-bit) / 4 mV/V | 2.62 nV |
| Quantization / LSB value (24-bit) / 8 mV/V | 5.25 nV |
| Quantization / LSB value (24-bit) / 16 mV/V | 10.49 nV |
| Quantization / LSB value (24-bit) / 32 mV/V | 20.98 nV |
| Quantization / LSB value (24-bit) / 64 mV/V | 41.96 nV |
| Quantization / LSB value (24-bit) / 128 mV/V | 83.92 nV |
| Quantization / LSB value (24-bit) / 256 mV/V | 167.85 nV |
| 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) |
| 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 electric potential strain gauge GND) on inputs "Input +" and "Input -" |
| Insulation voltage between input and bus | 500 Veff |
| Conversion procedure | Sigma-delta |
| 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 |
| Mounting orientation / Vertical | Yes |
| Installation elevation above sea level / 0 to 2000 m | No limitation |
| Installation elevation above sea level / >2000 m | Reduction of ambient temperature by 0.5°C per 100 m |
| Degree of protection per EN 60529 | IP67 |
Ambient conditions
| Temperature / Operation | -25 to 60°C |
| Temperature / Derating | - |
| Temperature / Storage | -40 to 85°C |
| Temperature / Transport | -40 to 85°C |
Mechanical properties
| Dimensions / Width | 53 mm |
| Dimensions / Height | 85 mm |
| Dimensions / Depth | 42 mm |
| Torque for connections / M8 | Max. 0.4 Nm |
| Torque for connections / M12 | Max. 0.6 Nm |
| Weight | 190 g |
Documentation & CAD
Files hosted by B&R Industrial Automation; links open the official download page.
Datasheets
Manuals
3D CAD models
ECAD / EPLAN
Get a quote for a replacement
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Specifications from the official B&R product catalog. Always confirm against the datasheet for your exact revision.