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Siemens SIPLUS S7-300 SM 326F Fail-safe DI Module

Siemens SIPLUS S7-300 SM 326F Fail-safe 8 Digital Input Module.

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ManufacturerSiemens

Part number6AG1326-1RF01-4AB0

Module Type Fail-safe Digital Input

Inputs 8x DI

Voltage 24 V DC

Sensor Type NAMUR

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8 Fail-safe Digital Inputs NAMUR Sensor Compatibility High Safety Integrity (SIL3, PLe) Conformal Coating for Harsh Environments 0-60°C Operating Temperature Designed for SIMATIC S7 F-systems

Product description

The Siemens SIPLUS S7-300 SM 326F (6AG1326-1RF01-4AB0) is a fail-safe digital input module based on the 6ES7326-1RF01-0AB0. It features 8 fail-safe digital inputs (DI) for 24 V DC NAMUR sensors. This module is designed for use in SIMATIC S7 F-systems and is certified for safety categories up to Category 4 (EN 954-1), SIL3 (IEC 61508), and PLe (ISO 13849). The SIPLUS version offers conformal coating for enhanced protection in harsh environments and operates in a temperature range of 0 to +60 °C.

This module is critical for safety-instrumented systems (SIS) where reliable detection of hazardous conditions is paramount. Applications include emergency shutdown systems, safety interlocks, and monitoring of critical process parameters in industries such as chemical processing, oil and gas, power generation, and high-risk manufacturing.

Stanlo Automation, your veteran-owned source for surplus industrial automation components, carries the Siemens 6AG1326-1RF01-4AB0. We understand the importance of safety-rated components and provide reliable access to essential parts for your safety-critical applications. Trust Stanlo for your SIPLUS and S7-300 module needs.

Technical specifications

Module Type	Fail-safe Digital Input
Inputs	8x DI
Voltage	24 V DC
Sensor Type	NAMUR
Safety Rating	Cat 4 (EN 954-1), SIL3 (IEC 61508), PLe (ISO 13849)
Temperature Range	0 to +60 °C
Coating	Conformal Coating
Base Module	Based on 6ES7326-1RF01-0AB0

Common applications

Safety Instrumented Systems (SIS)

Emergency Shutdown (ESD)

Safety Interlocks

Hazardous Area Monitoring

Process Control Safety

Machine Safety

Chemical Plants

Compatible systems

Siemens SIMATIC S7-300 F-CPUs SIMATIC Safety Integrated Software

Also known as

SIPLUS SM 326F DI8 NAMUR Siemens Fail-safe Input Module

Replaces / compatible with

Replaces or is functionally equivalent to Siemens 6ES7326-1RF01-0AB0 with added SIPLUS features.

Technical note

Expert tip

Requires an S7-300 F-CPU (Fail-safe Central Processing Unit) and appropriate safety programming in STEP 7 or TIA Portal to function as a safety input module.

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Frequently asked questions

What safety certifications does the Siemens 6AG1326-1RF01-4AB0 module hold?

The Siemens 6AG1326-1RF01-4AB0 SIPLUS module is certified for up to Category 4 according to EN 954-1, SIL3 according to IEC 61508, and PLe according to ISO 13849. These certifications ensure its suitability for high-integrity safety functions.