Siemens 6ES7326-1RF00-0AB0 Fail-Safe Digital Input Module

Fail-Safe Digital Input for SIMATIC S7 Systems

The Siemens 6ES7326-1RF00-0AB0 functions as a fail-safe digital input module for the SIMATIC S7-300 and ET 200M distributed I/O systems. This module provides 8 fail-safe digital inputs, offering reliable signal acquisition for safety-critical applications. It processes signals from emergency stop buttons, safety light curtains, and door interlocks with high integrity. An integrated clock synchronization feature ensures precise timestamping of safety events. Additionally, the module supports PROFIsafe communication protocol, enabling seamless integration with safety-oriented control networks.

Technical Specifications

Specification	Value
Model	6ES7326-1RF00-0AB0
Product Type	Fail-Safe Digital Input Module
Number of Inputs	8
Input Voltage	24 V DC
Input Current	7 mA
Safety Integrity Level	SIL 3 (IEC 61508) / PL e (ISO 13849)
Response Time	10 ms
Dimensions (W x H x D)	40 mm x 125 mm x 117 mm
Weight	Approx. 0.23 kg
Communication	PROFIsafe via PROFIBUS DP

Installation and Environmental Specifications

The module mounts onto a standard S7-300 rail, simplifying installation in control cabinets. LED indicators provide clear visual feedback for channel status and module diagnostics. The Siemens 6ES7326-1RF00-0AB0 operates reliably in industrial environments with ambient temperatures ranging from 0 °C to 60 °C. It also withstands vibration and shock conditions per IEC 60068 standards.