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Siemens Simatic S7-300 Digital Input

The Siemens 6ES7 326-1BK02-0AB0 is a failsafe digital input module from the SIMATIC S7-300 series (SM 326). This module is designed for safe acquisition of digital signals in safety-oriented automation systems and is typically used in machine and plant control systems. The module processes 24 digital input signals at 24 V DC and supports diagnostic and safety functions for reliable plant operation.

Thanks to integrated Safety Integrated technology, the module meets high safety standards up to Category 4 according to EN 954-1, SIL3 according to IEC 61508, and Performance Level e according to ISO 13849. This makes the unit particularly suitable for safety-related applications such as emergency stop circuits, safety door monitoring, or safety interlocks.

The module features a 40-pin connection and can be installed centrally in S7-300 controllers or decentrally in ET 200M systems via PROFIBUS or PROFINET. The integrated diagnostic functions detect faults or signal errors at an early stage and report them to the control system.

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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
* Connection: 1× 40-pin
* For use in SIMATIC S7-300 and ET 200M

Typical areas of application:

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

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