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Short description
I/O module 4 digital input channels, 4 digital channels configurable as inputs or outputs, 2 analog inputs ±10 V, reACTION Technology
General information
B&R ID code 0xE55A
Status indicators I/O function per channel, operating state, module status
Module run/error Yes, using status LED and software
Outputs Yes, using status LED and software (output error status)
Inputs Yes, using status LED and software
reACTION-capable I/O channels Yes
Blackout mode
Scope Module
Function Programmable
Standalone mode No
Power consumption
Bus 0.01 W
Internal I/O 1.6 W
Additional power dissipation caused by actuators (resistive) [W] +0.8
Type of signal lines Shielded cables must be used for all signal lines, cable length: Max. 20 m
Application memory
Type 64 Mbit flash memory
Data retention 20 years at 55°C
Guaranteed erase/write cycles 100,000
CE Yes
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
Encoder power supply
Output voltage 24 VDC -15% / +20%
Output current Module-internal, max. 600 mA
Short-circuit proof, overload protection Yes
Digital inputs
Quantity 4 inputs and 4 mixed channels, configurable as inputs or outputs using software
Nominal voltage 24 VDC
Input voltage 24 VDC -15% / +20%
Input current at 24 VDC Typ. 1.3 mA
Input circuit Sink
Input filter
Hardware <3 µs
Software Default 200 ns, configurable between 200 ns and 5 ms in 10 ns intervals
Connection type 1-wire connections
Input resistance 18.16 kΩ
Switching threshold
Low <5 VDC
High >15 VDC
Insulation voltage between channel and bus 500 Veff
ABR incremental encoder
Quantity 2
Encoder inputs 24 V, asymmetrical
Counter size 32-bit
Input frequency Max. 333 kHz
Evaluation 4x
Analog inputs
Quantity 2
Input ±10 V
Input type Differential input
Digital converter resolution ±12-bit
Output format
Data type INT
Voltage INT 0x8001 - 0x7FFF / 1 LSB = 0x0008 = 2.441 mV
Input impedance in signal range 20 MΩ
Input protection Protection against wiring with supply voltage
Permissible input signal Max. ±30 V
Output of digital value during overload
Undershoot 0x8001
Overshoot 0x7FFF
Conversion procedure SAR
Input filter 3rd-order low pass / cutoff frequency 130 kHz
Max. error
Gain 0.08%
Offset 0.018%
Max. gain drift 0.003 %/°C
Max. offset drift 0.001 %/°C
Common-mode rejection
DC 86 dB
50 Hz 84 dB
Common-mode range ±12 V
Nonlinearity 0.015%
Insulation voltage between channel and bus 500 Veff
Sampling frequency 500 kHz
Digital outputs
Quantity 4 mixed channels, configurable as inputs or outputs 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 cutoff if overcurrent or short circuit occurs (see value "Peak short circuit 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
Switching delay
0 → 1 <1 µs
1 → 0 <1 µs
Switching frequency
Resistive load Min. 50 kHz, max. 500 kHz
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
Vertical Yes
Installation elevation above sea level
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
Ambient conditions
Horizontal mounting orientation -25 to 60°C
Vertical mounting orientation -25 to 50°C
Derating See section "Derating and hardware configuration"
Storage -40 to 85°C
Transport -40 to 85°C
Relative humidity
Operation 5 to 95%, non-condensing
Storage 5 to 95%, non-condensing
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
Material number:
  • 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 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 for push-pull connections.

A voltage signal of ±10 V can be read using 2 analog inputs.

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.

Mandatory Accessories
Bus modules
X20BM31 X20 bus module for double-width modules, 24 VDC keyed, internal I/O supply continuous
Terminal blocks
X20TB12 X20 terminal block, 12-pin, 24 VDC keyed
Automation Studio HW Upgrades Version (Date) Download
V4.1 HW Upgrade (X20RT8201) EXE / 3 MB
Certificates Version (Date) Download
E115267 UL CoC X20 PDF / 847 KB
Documentation Version (Date) Download
Data sheet X20RT8201 PDF / 945 KB
X20 System User´s Manual PDF / 56 MB
reACTION Technology user´s manual PDF / 5 MB
E-CAD (Electro or EPLAN Templates) Version (Date) Download
X20 EPLAN P8 from V2.4 EXE / 161 MB
M-CAD (Mechan. Templates) Version (Date) Download
3D File DXFSTEP X20 Double IO Slice ZIP / 117 KB

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