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B&R X20AIB744
4 full-bridge strain gauge inputs5 kHz data output rate for all 4 channelsIndependently configurable strain gauge factor and filter level for each of the 4 channels…
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Description
4 full-bridge strain gauge inputs5 kHz data output rate for all 4 channelsIndependently 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.
Specification
| I/O module | 4 full-bridge strain gauge inputs |
|---|---|
| B&R ID code | 0xE286 |
| 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 |
| Bus | 0.01 W |
| Internal I/O | 1 W |
| Additional power dissipation caused by actuators (resistive) [W] | +1.43 |
| CE | Yes |
| UKCA | Yes |
| CRA (Cyber Resilience Act) | In preparation |
| ATEX | Zone 2, II 3G Ex nA nC IIA T5 Gc IP20, Ta (see X20 user’s manual) FTZÚ 09 ATEX 0083X |
| UL | cULus E115267 Industrial control equipment |
| 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) |
| 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 electric potential strain gauge GND) on inputs “Input +” and “Input -“ |
| Insulation voltage between input and bus | 500 Veff |
| Conversion procedure | Sigma-delta |
| 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) |
| Voltage | 5.5 VDC / Max. 65 mA per channel |
| Short-circuit and overload-proof | Yes |
| 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 isolation | Bus isolated from analog input and strain gauge supply voltage Channel not isolated from channel and I/O power supply |
| Horizontal | Yes |
| Vertical | Yes |
| 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 |
| Horizontal mounting orientation | -25 to 60°C |
| Vertical mounting orientation | -25 to 50°C |
| Derating | See section “Hardware configuration” |
| Storage | 5 to 95%, non-condensing |
| Transport | 5 to 95%, non-condensing |
| Operation | 5 to 95%, non-condensing |
| Note | Order 1x terminal block X20TB1F separately. Order 1x bus module X20BM11 separately. |
| Pitch | 12.5+0.2 mm |
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