B&R X20RT8381

Name: B&R X20RT8381
Brand: B&R Industrial Automation
SKU: X20RT8381

reACTION Technology module 4 high-speed digital inputs 4 high-speed digital channels, configurable as inputs or outputs 2 high-speed analog inputs ±10 V 1 high-speed analog output ±10 V 1 ABR incremental encoder input 24 V Pulse width modulation Support of data type "REAL" for arithmetic operations Supports blackout mode This reACTION Technology module is equipped with 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 2 analog inputs and 1 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, 2 analog inputs ±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 / 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	0xF24E
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

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	2
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

Data sheet X20RT8381(de)
Data sheet X20RT8381(en)

Manuals

3D CAD models

3D File DXFSTEP X20 Double IO Slice

ECAD / EPLAN

X20 EPLAN P8 from V2.4

Certificates

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Specifications from the official B&R product catalog. Always confirm against the datasheet for your exact revision.