|I/O module||8 safe type A digital inputs, 4 pulse outputs, 24 VDC, 4 safe type A digital outputs, 24 VDC, 3 A, OSSD <500 µs, 2 safe type B2 digital outputs, 24 VDC, 50 mA, OSSD <500 µs, reACTION Technology|
I/O power supply
|Nominal voltage||24 VDC|
|Voltage range||24 VDC -15% / +20%|
|Integrated protection||Reverse polarity protection|
Safe digital inputs
|Nominal voltage||24 VDC|
|Input characteristics per EN 61131-2||Type 1|
|Software||Configurable between 0 and 500 ms|
|Input voltage||24 VDC -15% / +20%|
|Input current at 24 VDC||Max. 3.28 mA|
|Input resistance||Min. 7.33 kΩ|
|Error detection time||100 ms|
|Insulation voltage between channel and bus||500 Veff|
|Cable length between pulse output and input|| Max. 60 m with unshielded line
Max. 400 m with shielded line
Safe digital HS-LS outputs
Safe digital HS-HS outputs
|Installation elevation above sea level||0 to 2000 m, no limitation|
|Degree of protection per EN 60529||IP20|
|Horizontal mounting orientation||0 to 60°C|
|Vertical mounting orientation||0 to 50°C|
|Derating||See section "Derating".|
|Storage||-40 to 85°C|
|Transport||-40 to 85°C|
|Operation||5 to 95%, non-condensing|
|Storage||5 to 95%, non-condensing|
|Transport||5 to 95%, non-condensing|
|Note|| Order 2x safety-keyed terminal block separately.
Order 1x safety-keyed bus module separately.
- reACTION Technology module
- 8 high-speed safe digital inputs, sink circuit
- 4 pulse outputs
- Software input filter configurable for each channel
- 4 safe digital outputs, output type A with 3 A, source circuit
- 2 high-speed safe digital outputs, output type B with 50 mA, source circuit
- Safe reACTION task cycle times starting at 125 µs
- Integrated output protection
This reACTION Technology module is equipped with 8 high-speed safe digital inputs and 6 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 125 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 low-side" variant (output type A) is limited to actuators without reference potential (e.g. relays, valves). Type A outputs have safety-related advantages since the actuator can be cut off in its connection cable in all error scenarios. 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 have a start interlock on error in the event of network errors.
This module is designed for X20 12-pin terminal blocks.
|Automation Studio HW Upgrades||Version (Date)||Download|
|V4.2 HW Upgrade (X20SRT842)||EXE / 4 MB|
|V4.6 HW Upgrade (X20SRT842)||EXE / 2 MB|
|E115267 UL CoC X20||PDF / 847 KB|
|FS Certificate SafeDESIGNER, SafeLOGIC, SafeIO||PDF / 2 MB|
|FS Certificate mapp Safety||PDF / 8 MB|
|Data sheet X20SRTxxx - Legacy||PDF / 4 MB|
|Data sheet X20SRTxxx - mapp Safety||PDF / 2 MB|
|E-CAD (Electro or EPLAN Templates)||Version (Date)||Download|
|X20 EPLAN P8 from V2.4||EXE / 161 MB|
|Tools / Utilities / Examples||Version (Date)||Download|
|Sistema library||ZIP / 319 KB|