B&R X20RT8401
reACTION technology module 4 high-speed digital inputs 4 high-speed digital channels, configurable as inputs or outputs 1 high-speed analog input ±10 V 1 high-speed analog output ±10 V 1 ABR incremental encoder input 24 V Pulse width modulation 24 VDC and GND for encoder supply Supports blackout mode This reACTION technology module has 4 high-speed digital inputs and 4 high-speed digital mixed channels. All connections are designed for 1-wire connections. All inputs are designed for sink connections; the outputs are designed for push-pull connections. A voltage signal of ±10 V can be read or output using an analog input and analog output, respectively. Ultrafast reACTION Technology makes it possible to control the integrated I/O channels with response times down to 1 μs. All of the commands that can be used for reACTION programs are provided as function blocks in special libraries (e.g. AsIORTI). Programming in compliance with IEC 61131-3 requirements takes place in the Function Block Diagram editor in Automation Studio. The module supports blackout mode. In blackout mode, programmable module functionality persists even if the network fails.
Lifecycle & replacement
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Technical specifications
Short description
| I/O module | 4 digital input channels, 4 digital channels configurable as inputs or outputs, 1 analog input ±10 V, 1 analog output ±10 V, reACTION Technology |
General information
| Diagnostics / Module run/error | Yes, using LED status indicator and software |
| Diagnostics / Outputs | Yes, using LED status indicator and software (output error status) |
| Diagnostics / Inputs | Yes, using LED status indicator and software |
| Diagnostics / Channel type | Yes, using software |
| Support / reACTION-capable I/O channels | Yes |
| Blackout mode / Scope | Module |
| Blackout mode / Function | Programmable |
| Blackout mode / Standalone mode | No |
| Power consumption / Bus | 0.01 W |
| Power consumption / Internal I/O | 1.7 W |
| Application memory / Type | 64 Mbit flash memory |
| Application memory / Data retention | 20 years at 55°C |
| Application memory / Guaranteed erase/write cycles | 100,000 |
| 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 / DNV | Temperature: B (0 to 55°C) Humidity: B (up to 100%) Vibration: B (4 g) EMC: B (bridge and open deck) |
| Certifications / CCS | Yes |
| Certifications / LR | ENV1 |
| Certifications / KR | Yes |
| Certifications / ABS | Yes |
| Certifications / BV | EC33B Temperature: 5 - 55°C Vibration: 4 g EMC: Bridge and open deck |
| B&R ID code | 0xE55C |
| Status indicators | I/O function per channel, operating state, module status |
| Additional power dissipation caused by actuators (resistive) [W] | +1.1 |
| Type of signal lines | Shielded lines must be used for all signal lines, line length: Max. 20 m |
Encoder power supply
| Output voltage | 24 VDC -15% / +20% |
| Output current | Module-internal, max. 600 mA |
| Short-circuit proof, overload protection | Yes |
Digital inputs
| Input filter / Hardware | <3 µs |
| Input filter / Software | Default 200 ns, configurable between 200 ns and 5 ms in 10 ns intervals |
| Switching threshold / Low | <5 VDC |
| Switching threshold / High | >15 VDC |
| Quantity | 4 standard inputs and 4 mixed channels, configuration as input or output using software |
| Nominal voltage | 24 VDC |
| Input voltage | 24 VDC -15% / +20% |
| Input current at 24 VDC | Typ. 1.3 mA |
| Input circuit | Sink |
| Connection type | 1-wire connections |
| Input resistance | 18.16 kΩ |
| Insulation voltage between channel and bus | 500 Veff |
ABR incremental encoder
| Quantity | 1 |
| Encoder inputs | 24 V, asymmetrical |
| Counter size | 32-bit |
| Input frequency | Max. 333 kHz |
| Evaluation | 4x |
Analog inputs
| Output format / Data type | INT |
| Output format / Voltage | INT 0x8001 - 0x7FFF / 1 LSB = 0x0008 = 2.441 mV |
| Output of digital value during overload / Undershoot | 0x8001 |
| Output of digital value during overload / Overshoot | 0x7FFF |
| Max. error / Gain | 0.08% |
| Max. error / Offset | 0.018% |
| Common-mode rejection / DC | 86 dB |
| Common-mode rejection / 50 Hz | 84 dB |
| Quantity | 1 |
| Input | ±10 V |
| Input type | Differential input |
| Digital converter resolution | ±12-bit |
| Input impedance in signal range | 20 MΩ |
| Input protection | Protection against wiring with supply voltage |
| Permissible input signal | Max. ±30 V |
| Conversion procedure | SAR |
| Input filter | Third-order low-pass filter / Cutoff frequency 130 kHz |
| Max. gain drift | 0.003 %/°C |
| Max. offset drift | 0.001%/°C |
| Common-mode range | ±12 V |
| Nonlinearity | 0.015% |
| Insulation voltage between channel and bus | 500 Veff |
| Sampling frequency | 500 kHz |
Digital outputs
| Switching delay / 0 → 1 | <1 µs |
| Switching delay / 1 → 0 | <1 µs |
| Switching frequency / Resistive load | Max. 500 kHz |
| Quantity | 4 mixed channels, configuration as input or output using software |
| Variant | Push-Pull |
| Nominal voltage | 24 VDC |
| Switching voltage | 24 VDC -15% / +20% |
| Nominal output current | 100 mA |
| Total nominal current | 400 mA |
| Connection type | 1-wire connections |
| Output circuit | Sink or source |
| Output protection | Thermal shutdown in the event of overcurrent or short circuit (see value "Short-circuit peak current") |
| Diagnostic status | Output monitoring with delay <700 ns |
| Leakage current when the output is switched off | Approx. 25 µA |
| RDS(on) | 140 mΩ |
| Residual voltage | <0.4 V at nominal current 100 mA |
| Max. continuous current | 100 mA |
| Peak short-circuit current | <10 A |
| Switch-on in the event of overload shutdown or short-circuit shutdown | Approx. 3 ms |
| Insulation voltage between channel and bus | 500 Veff |
Analog outputs
| Max. error / Gain | 0.15% |
| Max. error / Offset | 0.05% |
| Output format / Data type | INT |
| Output format / Voltage | INT 0x8000 - 0x7FFF / 1 LSB = 0x0008 = 2.441 mV |
| Quantity | 1 |
| Output | ±10 V |
| Digital converter resolution | ±12-bit |
| Conversion time | 2 μs |
| Settling time on output change over entire range | 5 μs |
| Switch on/off behavior | Internal enable relay for startup |
| Output protection | Short-circuit proof |
| Load per channel | Max. ±10 mA, load ≥1 kΩ |
| Short-circuit proof | Current limiting ±65 mA |
| Output filter | First-order low-pass filter / cutoff frequency 22 kHz |
| Max. gain drift | 0.022 %/°C |
| Max. offset drift | 0.032%/°C |
| Error caused by load change | Max. 0.14%, from 10 MΩ → 1 kΩ, resistive |
| Nonlinearity | 0.005% |
| Insulation voltage between channel and bus | 500 Veff |
Electrical properties
| Electrical isolation | Channel isolated from bus Channel 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 | See section "Derating and hardware configuration". |
| 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 2x terminal block X20TB12 separately. Order 1x bus module X20BM31 separately. |
| Pitch | 25⁺⁰.² mm |
Documentation & CAD
Files hosted by B&R Industrial Automation; links open the official download page.
Datasheets
Manuals
3D CAD models
ECAD / EPLAN
Certificates
- 64331_A1 BV Certificate of Compliance X20
- 64331_A1 BV Certificate of Compliance X20(de)
- CCS Type Approval Certificate - X20
- E115267 UL Certificate of Compliance X20
- EU Data Act - X20 IO - Connected Product Information Notice
- EU Declaration ATEX X20
- EU Declaration of conformity PLC X20
- KR Type Approval Certificate MIL39390-AC003 (X20 System)
- Lloyds Register (X20 only)
- TAA00000BJ DNV Type Approval Certificate X20
- UK Declaration PLC X20
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Specifications from the official B&R product catalog. Always confirm against the datasheet for your exact revision.