IAC

B&R X20SRT402

reACTION Technology module 4 high-speed safe digital inputs, sink circuit 4 pulse outputs Software input filter configurable for each channel 2 high-speed safe digital outputs, output type B with 0.2 A, source circuit Safe reACTION task cycle times starting at 150 µs Integrated output protection This reACTION Technology module is equipped with 4 high-speed safe digital inputs and 2 high-speed safe digital outputs. It is designed for a nominal voltage of 24 VDC. The module can be used to read in digital signals and to control actuators in safety-related applications up to PL e or SIL 3. Ultrafast reACTION Technology makes it possible to control internal I/O channels with cycle times down to 150 µs. All commands that can be used for reACTION programs are available 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 is equipped with filters that are individually configurable for switch-on and switch-off behavior. The module also provides pulse signals for diagnosing the sensor line. The outputs are designed using semiconductor technology so that the safety-related characteristics do not depend on the number of switching cycles. The "high-side high-side" variant (output type B) is required for actuators with reference potential (e.g. enable inputs on frequency inverters). It is important to observe the special notices for the cabling in this case. The safe digital output modules are equipped with an error interlock in the event of network errors. This module is designed for X20 12-pin terminal blocks.

Lifecycle & replacement

Lifecycle status not indexed

No manufacturer-published lifecycle data for B&R part numbers is indexed here yet. Ask IAC to check availability and an upgrade path.

IAC stocks legacy spares and exchange units and quotes upgrade paths. Send us the nameplate details and we will confirm a compatible replacement.

Technical specifications

Short description
I/O module4 safe type A digital inputs, 4 pulse outputs, 24 VDC, 2 safe type B2 digital outputs, 24 VDC, 0.2 A, OSSD <10 µs, reACTION Technology
General information
System requirements / Automation Studio4.2.5 or later
System requirements / Automation Runtime4.2 or later
System requirements / SafeDESIGNER4.2.2 or later
System requirements / Safety Release1.10 or later
System requirements / mapp Technology Packagemapp Safety 5.7.0 or later
Diagnostics / Module run/errorYes, using LED status indicator and software
Diagnostics / OutputsYes, using LED status indicator and software
Diagnostics / InputsYes, using LED status indicator and software
Support / reACTION-capable I/O channelsYes
Blackout mode / ScopeModule
Blackout mode / FunctionProgrammable
Blackout mode / Standalone modeYes
Power consumption / Bus0.4 W
Power consumption / Internal I/O2.5 W
Additional power dissipation caused by actuators (resistive) [W] / Safe digital HS-HS outputs0.4
Additional power dissipation caused by actuators (resistive) [W] / Pulse outputs0.8
Electrical isolation / Channel - BusYes
Electrical isolation / Channel - ChannelNo
Certifications / CEYes
Certifications / UKCAYes
Certifications / CRA (Cyber Resilience Act)In preparation
Certifications / Functional safetycULus FSPC in preparation ANSI UL 1998 in preparation
Certifications / Functional safety #2IEC 61508:2010, SIL 3 EN 62061:2005/A2:2015, SIL 3 EN ISO 13849-1:2015, Cat. 4 / PL e IEC 61511:2004, SIL 3
Certifications / Functional safety #3EN 50156-1:2004
Certifications / ATEXZone 2, II 3G Ex nA nC IIA T5 Gc IP20, Ta (see X20 user's manual) FTZÚ 09 ATEX 0083X
Certifications / ULcULus E115267 Industrial control equipment
B&R ID code0xE7EC
Status indicatorsI/O function per channel, operating state, module status
Max. I/O cycle time800 µs
Type of signal linesShielded lines must be used for all signal lines.
Safety characteristics
EN ISO 13849-1:2015 / Mission timeMax. 20 years
IEC 61508:2010, IEC 61511:2004, EN 62061:2013 / PFH / PFHd / openSAFETY wiredNegligible
IEC 61508:2010, IEC 61511:2004, EN 62061:2013 / PFH / PFHd / openSAFETY wireless<1*10⁻¹⁴ * Number of openSAFETY packets per hour
IEC 61508:2010, IEC 61511:2004, EN 62061:2013 / Proof test interval (PT)20 years
Safe digital inputs / EN ISO 13849-1:2015 / CategoryCat. 3 when using individual input channels, Cat. 4 when using input channel pairs (e.g. SI1 and SI2) or more than 2 input channels
Safe digital inputs / EN ISO 13849-1:2015 / PLPL e
Safe digital inputs / EN ISO 13849-1:2015 / DC>94%
Safe digital inputs / EN ISO 13849-1:2015 / MTTFD per channel100 years when using individual input channels, 2500 years when using input channel pairs (e.g. SI1 and SI2) or more than 2 input channels
Safe digital inputs / IEC 61508:2010, IEC 61511:2004, EN 62061:2013 / SIL CLSIL 3
Safe digital inputs / IEC 61508:2010, IEC 61511:2004, EN 62061:2013 / SFF>90%
Safe digital inputs / IEC 61508:2010, IEC 61511:2004, EN 62061:2013 / PFH / PFHd per channel<1*10⁻¹⁰
Safe digital inputs / IEC 61508:2010, IEC 61511:2004, EN 62061:2013 / PFD per channel<2*10⁻⁵
Safe digital outputs / EN ISO 13849-1:2015 / CategoryCat. 3 if parameter "Disable OSSD = Yes - Warning", Cat. 4 if parameter "Disable OSSD = No"
Safe digital outputs / EN ISO 13849-1:2015 / PLPL d if parameter "Disable OSSD = Yes - Warning", PL e if parameter "Disable OSSD = No"
Safe digital outputs / EN ISO 13849-1:2015 / DC>60% if parameter "Disable OSSD = Yes - Warning", >94% if parameter "Disable OSSD = No"
Safe digital outputs / EN ISO 13849-1:2015 / MTTFD per channel100 years if parameter "Disable OSSD = Yes - Warning", 2500 years if parameter "Disable OSSD = No"
Safe digital outputs / IEC 61508:2010, IEC 61511:2004, EN 62061:2013 / SIL CLSIL 2 if parameter "Disable OSSD = Yes - Warning", SIL 3 if parameter "Disable OSSD = No"
Safe digital outputs / IEC 61508:2010, IEC 61511:2004, EN 62061:2013 / SFF>60% if parameter "Disable OSSD = Yes - Warning", >90% if parameter "Disable OSSD = No"
Safe digital outputs / IEC 61508:2010, IEC 61511:2004, EN 62061:2013 / PFH / PFHd per channel<5*10⁻⁸ if parameter "Disable OSSD = Yes - Warning", <1*10⁻¹⁰ if parameter "Disable OSSD = No"
Safe digital outputs / IEC 61508:2010, IEC 61511:2004, EN 62061:2013 / PFD per channel<1*10⁻³ if parameter "Disable OSSD = Yes - Warning", <2*10⁻⁵ if parameter "Disable OSSD = No"
I/O power supply
Nominal voltage24 VDC
Voltage range24 VDC -15% / +20%
Integrated protective functionReverse polarity protection
Safe digital inputs
Input filter / Hardware≤130 µs
Input filter / SoftwareConfigurable between 0 and 500 ms
Switching threshold / Low<5 VDC
Switching threshold / High>15 VDC
Quantity4
VariantType A
Nominal voltage24 VDC
Input characteristics per EN 61131-2Type 1
Input circuitSink
Input voltage24 VDC -15% / +20%
Input current at 24 VDCMin. 2 mA to max. 3.28 mA
Input resistanceMin. 7.33 kΩ
Error detection time100 ms
Insulation voltage between channel and bus500 Veff
Line length between signal source (pulse output or external signal) and inputMax. 60 m with unshielded line Max. 400 m with shielded line
Safe digital HS-HS outputs
Quantity2
VariantFET, 2x positive switching, type B2, output level readable
Nominal voltage24 VDC
Nominal output current0.2 A
Total nominal current0.4 A
Output protectionSee section "Inrush current behavior for output channels".
Braking voltage when switching off inductive loadsMax. 45 VDC
Error detection time1 s
Insulation voltage between channel and bus500 Veff
Peak short-circuit currentSee section "Inrush current behavior for output channels".
Leakage current when the output is switched off<100 µA
RDS(on)5 Ω
Switching voltageI/O power supply minus voltage drop due to RDS(on)
Max. switching frequencySee section "Inrush current behavior for output channels".
Test pulse lengthMax. 10 µs
Max. capacitive load100 nF
Current on loss of ground
IOUT<100 µA
IGND<200 mA
Pulse outputs
Quantity4
VariantPush-Pull
Nominal output current50 mA
Output protectionShutdown of individual channels in the event of overload or short circuit
Peak short-circuit current0.5 A for 120 µs
Short-circuit current15 mAeff
Leakage current when the output is switched off0.1 mA
RDS(on)80 Ω
Switching voltageI/O power supply minus voltage drop due to RDS(on)
Total nominal current200 mA
Operating conditions
Mounting orientation / HorizontalYes
Mounting orientation / VerticalYes
Installation elevation above sea level0 to 2000 m, no limitation
Degree of protection per EN 60529IP20
Ambient conditions
Temperature / Operation / Horizontal mounting orientation0 to 60°C
Temperature / Operation / Vertical mounting orientation0 to 50°C
Temperature / DeratingSee section "Derating".
Temperature / Storage-40 to 85°C
Temperature / Transport-40 to 85°C
Relative humidity / Operation5 to 95%, non-condensing
Relative humidity / Storage5 to 95%, non-condensing
Relative humidity / Transport5 to 95%, non-condensing
Mechanical properties
NoteOrder 2x safety-keyed terminal block separately. Order 1x safety-keyed bus module separately.
Pitch25⁺⁰.² mm

Documentation & CAD

Files hosted by B&R Industrial Automation; links open the official download page.

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.