The Pilz PSSu E F 2DO 2-R (315215) is a fail-safe digital output module within the Pilz PSSu modular I/O system, designed for reliable control of safety-related actuators in demanding industrial and transportation applications. Built for durability and compliance with international standards, it combines robust relay output technology with safety-focused features such as isolation, fault tolerance, and resilience to harsh operating conditions.

This module provides two digital relay outputs rated at 24 V DC, offering safe and reliable actuation of connected devices such as contactors, solenoids, relays, and signalling equipment. The use of relay-based technology ensures galvanic isolation and is particularly advantageous for applications where electrical separation is critical or where inductive and resistive loads must be reliably switched.

Safety is a core design principle of the PSSu E F 2DO 2-R. Both outputs are short-circuit proof and feature potential isolation, ensuring that failures in one output circuit cannot compromise the rest of the safety system. This architecture enhances reliability and allows the module to be integrated into high-integrity safety applications in compliance with standards such as EN ISO 13849 (PL e) and IEC 62061 (SIL 3).

The module also demonstrates excellent resilience when operating with inductive loads, capable of withstanding voltage spikes up to -50 V during switching events. This protects the internal electronics from transient energy surges and ensures long-term stability and performance.

Where the PSSu E F 2DO 2-R stands out is its suitability for the railway and transportation industry. Certified to EN 50125-3 (Railway Applications – Environmental Conditions for Equipment), it is tested for use in harsh environments typical of rolling stock and railway infrastructure. This includes exposure to vibration, temperature fluctuations, and electrical disturbances. Its certification makes it an ideal choice for applications in signalling, control systems, and safety-related automation within the railway sector, as well as for other transport-related industrial uses.

As part of the PSSu modular platform, the PSSu E F 2DO 2-R integrates seamlessly with Pilz base units and other expansion modules, offering scalability and flexibility. Its modularity allows engineers to build decentralised, distributed I/O systems tailored precisely to their application requirements, whether in traditional industrial automation or specialised railway projects.

In summary, the Pilz PSSu E F 2DO 2-R (315215) is a robust, railway-approved fail-safe output module that delivers reliable, isolated, and short-circuit-proof relay outputs for safety-critical applications. With its resilience against inductive loads, compliance with EN 50125-3, and integration into the modular PSSu system, it provides a future-proof solution for industries requiring both industrial-grade safety and railway-specific reliability.