B&R X20AI2237
2 analog voltage inputs Electrically isolated analog channels Electrically isolated sensor supplies 16-bit digital converter resolution Very high sampling rate NetTime timestamp: Moment of measurement The module is equipped with 2 voltage measurement inputs with 16-bit digital converter resolution. Each voltage input has its own sensor supply. The two channels with their respective sensor supplies are electrically isolated from each other.
Lifecycle & replacement
No manufacturer-published lifecycle data for B&R part numbers is indexed here yet. Ask IAC to check availability and an upgrade path.
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Technical specifications
Short description
| I/O module | 2 analog inputs ±10 V |
General information
| Diagnostics / Module run/error | Yes, using LED status indicator and software |
| Diagnostics / Inputs | Yes, using LED status indicator and software |
| Diagnostics / Sensor power supply | Yes, using LED status indicator and software |
| Power consumption / Bus | 0.05 W |
| Power consumption / Internal I/O | 1.05 W (Rev. ≥D0), 1.15 W (Rev. <D0) |
| Certifications / CE | Yes |
| Certifications / UKCA | Yes |
| Certifications / CRA (Cyber Resilience Act) | In preparation |
| Certifications / ATEX | Zone 2, II 3G Ex nA nC IIA T5 Gc IP20, Ta (see X20 user's manual) FTZÚ 09 ATEX 0083X |
| Certifications / UL | cULus E115267 Industrial control equipment |
| Certifications / HazLoc | cCSAus 244665 Process control equipment for hazardous locations Class I, Division 2, Groups ABCD, T5 |
| B&R ID code | 0xC9C4 |
| Status indicators | I/O function per channel, operating state, module status, sensor power supply per channel |
| Additional power dissipation caused by actuators (resistive) [W] | - |
Analog inputs
| Output format / Data type | INT |
| Output format / Voltage | INT 0x8001 - 0x7FFF / 1 LSB = 0x0001 = 305.176 µV |
| Max. error / Gain | 0.013% |
| Max. error / Offset | 0.0035% |
| Common-mode rejection / DC | 84 dB |
| Common-mode rejection / Up to 60 Hz | 84 dB |
| Common-mode rejection / Up to 10 kHz | 82 dB |
| Test voltage / Channel - Channel | 1000 VAC |
| Test voltage / Channel - Bus | 1000 VAC |
| Test voltage / Channel - Ground | 1000 VAC |
| Test voltage / Bus - Ground | 800 VAC |
| Input | ±10 V |
| Input type | Differential input |
| Digital converter resolution | ±15-bit |
| Data output rate | 10000 samples per second |
| Input impedance in signal range | 20 MΩ |
| Input protection | Up to 30 VDC, reverse polarity protection |
| Open-circuit detection | Yes, using software |
| Permissible input signal | Max. ±30 V |
| Output of digital value during overload | Configurable |
| Conversion procedure | SAR |
| Input filter | Fourth-order low-pass filter / Cutoff frequency 10 kHz |
| Max. gain drift | <0.0008%/°C |
| Max. offset drift | <0.0025%/°C |
| Common-mode range | ±14 V |
| Nonlinearity | <0.003% |
Sensor power supply
| Max. voltage ripple / Up to 100 kHz | ≤2.2 mV |
| Max. voltage ripple / Up to 1 MHz | ≤22 mV |
| Max. voltage ripple / Higher | ≤100 mV |
| Short-circuit current / Typical | <50 mA |
| Short-circuit current / Maximum | 60 mA |
| Power consumption | 0.75 W per channel |
| Nominal voltage | 25 V ±2% |
| Nominal output current | Max. 30 mA |
| Short-circuit proof | Yes, continuous |
| Behavior on short circuit | Current limiting |
Electrical properties
| Electrical isolation | Channel isolated from channel and bus Sensor power supply isolated from sensor power supply Sensor power supply not isolated from channel |
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 | IP20 |
Ambient conditions
| Temperature / Operation / Horizontal mounting orientation | -25 to 60°C |
| Temperature / Operation / Vertical mounting orientation | -25 to 50°C |
| Temperature / Derating | - |
| Temperature / Storage | -40 to 85°C |
| Temperature / Transport | -40 to 85°C |
| Relative humidity / Operation | 5 to 95%, non-condensing |
| Relative humidity / Storage | 5 to 95%, non-condensing |
| Relative humidity / Transport | 5 to 95%, non-condensing |
Mechanical properties
| Note | Order 1x terminal block X20TB12 separately. Order 1x bus module X20BM11 separately. |
| Pitch | 12.5⁺⁰.² mm |
Documentation & CAD
Files hosted by B&R Industrial Automation; links open the official download page.
Datasheets
Manuals
ECAD / EPLAN
Certificates
Get a quote for a replacement
Industrial Automation Co. stocks, sources, and repairs B&R parts — new, refurbished, or exchange units with warranty.
Specifications from the official B&R product catalog. Always confirm against the datasheet for your exact revision.