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Siemens SIMATIC S7 Fail-Safe Digital Input SM 326

Siemens SIMATIC S7 SM 326 Fail-safe Digital Input Module.

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ManufacturerSiemens

Part number6ES7326-1RF01-0AB0

Type Fail-safe Digital Input Module

Series SIMATIC S7 SM 326

Inputs 8 DI, 24V DC, NAMUR

Safety Rating Cat 4/SIL3/PLe

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8 fail-safe NAMUR inputs SIL3 & PLe certified Category 4 rating 24V DC operation Designed for S7 F-systems 40-pole connector

Product description

The Siemens 6ES7326-1RF01-0AB0 is a SIMATIC S7 SM 326 fail-safe digital input module. It provides 8 digital inputs (DI) with 24V DC, operating according to the NAMUR standard, and is designed for SIMATIC S7 F-systems. This module is certified for high safety integrity up to Category 4 (EN 954-1), SIL3 (IEC61508), and PLe (ISO13849), featuring a single 40-pole connector for field wiring.

This fail-safe input module is critical for safety-instrumented systems in hazardous environments and critical processes, such as those found in chemical plants, power generation, and heavy manufacturing. Its NAMUR interface is suitable for intrinsically safe field sensors, ensuring reliable signal acquisition in potentially explosive atmospheres.

Stanlo Automation, a veteran-owned distributor, offers this essential safety component. Sourcing from Stanlo ensures you receive reliable surplus parts that meet stringent industrial safety standards, backed by our commitment to quality and timely delivery.

Technical specifications

Type	Fail-safe Digital Input Module
Series	SIMATIC S7 SM 326
Inputs	8 DI, 24V DC, NAMUR
Safety Rating	Cat 4/SIL3/PLe
Connector	1x 40-pole

Common applications

Chemical plants

Power generation

Heavy manufacturing

Hazardous environments

Safety-instrumented systems

Process control

Compatible systems

SIMATIC S7 F-systems

Also known as

SIMATIC S7 SM 326 Fail-safe Input Module 8DI NAMUR Module

Replaces / compatible with

This module is part of the SIMATIC S7 F-systems and is a direct replacement for the same model number. It is announced for product cancellation on 10/01/2025.

Technical note

Expert tip

This module requires specific configuration within the SIMATIC S7 F-system software for proper fail-safe operation and diagnostics.

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Frequently asked questions

What safety standards does the Siemens 6ES7326-1RF01-0AB0 module comply with?

The Siemens 6ES7326-1RF01-0AB0 module complies with high safety standards, including Category 4 per EN 954-1, SIL3 per IEC 61508, and PLe per ISO 13849. This ensures its suitability for critical safety applications.