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Siemens Simatic S7-300 Digital Input

The Siemens 6ES7 326-1BK02-0AB0 is a fail-safe digital input module from the SIMATIC S7-300 series (SM 326). The module is designed for the reliable acquisition of digital signals in safety-related automation systems and is typically used in machine and plant control applications. It processes 24 digital input signals at 24 V DC and supports diagnostic and safety functions to ensure dependable plant operation. ([Industrie Mall][1])

With its integrated Safety Integrated technology, the module fulfills high safety requirements up to Category 4 as per EN 954-1, SIL3 according to IEC 61508, and Performance Level e according to ISO 13849. This makes it particularly suitable for safety-critical applications, such as emergency stop circuits, safety door monitoring, or safety interlocks. ([Industrie Mall][1])

The module features a 40-pin connector and can be used both centrally within S7-300 controllers and decentrally in ET 200M systems via PROFIBUS or PROFINET. Thanks to integrated diagnostic functions, errors or signal issues are detected early and reported to the controller. ([TURLL Automation][2])

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Technical data:

* Type: Digital Input Module SM 326 F-DI
* Article number: 6ES7 326-1BK02-0AB0
* 24 digital inputs
* Input voltage: 24 V DC
* Fail-safe design (Safety Integrated)
* Diagnostic alarm and safety monitoring
* Safety level: SIL3 / PL e / Category 4
* Connector: 1× 40-pin
* Compatible with SIMATIC S7-300 and ET 200M systems

Typical applications:

* Safety-oriented machine control systems
* Emergency stop and safety circuits
* Plant and process automation
* Industrial systems with safety-relevant sensors

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