Model: 6ES7326-1BK01-0AB0
Product Overview
Commercial availability is handled through direct RFQ, model verification and export-oriented follow-up rather than public cart checkout.
Datasheet Preview
Use attached product manuals when available. If the manual is not public yet, request the full file directly through RFQ.
Commercial Path
Product pages on DRIVEKNMS are designed to verify model, brand and series first, then move the buyer into one clean quotation path.
Technical Dossier
The Siemens SIMATIC S7-300 F-Series (Failsafe) represents one of the most widely deployed safety-rated programmable logic controller platforms in global heavy industry. Certified to IEC 61508 SIL 3 and EN 954-1 Category 4, these modules are the backbone of safety instrumented systems (SIS) in petrochemical refineries, nuclear power stations, offshore platforms, chemical processing plants, and steel manufacturing facilities across Europe, Asia, and the Americas. The F-Series architecture integrates seamlessly into the broader S7-300 backplane ecosystem, allowing mixed standard and failsafe I/O configurations within a single rack — a design decision that significantly reduced engineering overhead during the platform's peak deployment era (1997–2018). The 6ES7326-1BK01-0AB0 is a 24-channel 24 VDC failsafe digital input module, one of the most commonly specified components in this family for emergency shutdown (ESD) and fire-and-gas (F&G) applications.
The S7-300 platform was introduced by Siemens in 1994 as a modular mid-range PLC. The Failsafe (F) variant emerged in the late 1990s to address growing regulatory demand for IEC 61508-compliant safety systems in process industries. Early F-Series modules operated under STEP 7 Safety with the S7 Distributed Safety library, requiring dedicated F-CPUs such as the 6ES7315-6FF04-0AB0 and 6ES7317-6FF04-0AB0.
Between 2000 and 2010, Siemens expanded the F-Series I/O range substantially, introducing higher-density digital input modules (24-channel), analog failsafe modules, and F-capable communication processors. The architecture relied on a proprietary backplane bus (K-bus) with deterministic cycle times, making it suitable for SIL 2/3 applications when configured with redundant F-CPUs.
From 2015 onward, Siemens began transitioning customers toward the SIMATIC S7-1500 F platform and the ET 200SP HA distributed I/O system, both offering TIA Portal integration, higher processing speeds, and native PROFIsafe over PROFINET. The S7-300 F-Series entered its end-of-life phase, with Siemens announcing discontinuation of several core modules. This lifecycle transition has created sustained demand for original spare parts and tested refurbished units to support installed base maintenance without full system migration.
Failsafe Digital Input Modules (F-DI)
Failsafe Digital Output Modules (F-DO)
Failsafe Analog Input Modules (F-AI)
Failsafe CPUs (F-CPU)
Power Supply Modules (PS)
Interface & Communication Modules
The S7-300 F-Series modules present specific test challenges due to their dual-channel internal architecture, watchdog timer circuits, and backplane bus communication protocols. DriveKNMS applies a structured test protocol for each unit processed:
Continue The Model Path
Move from this exact model into the matching system hub, brand archive, model-family archive or lifecycle sourcing route before sending a final RFQ list.
Related Paths
Siemens SIEMENS 6ES7972-0BB12-0XA0 Profibus Connector is listed for S7-300 RFQ review. Confirm quantity, condition and destination before quotation.
Vipa CPU313SC 313-6CF13 is listed for S7-300 RFQ review. Confirm quantity, condition and destination before quotation.
Siemens 6ES7307-1KA02-0AA0 is listed for S7-300 RFQ review. Confirm quantity, condition and destination before quotation.
