PROTECT PSC1: Programmable modular safety control
Safe IO extension modules
Safe axis monitoring
Safe Cross Communication - Ethernet SDDC
Safe Remote-IO communication - Ethernet SDDC
Universal communication module for field bus connection

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PROTECT PSC1 makes networked safety sub-systems possible for complex installations

The PROTECT PSC1 safety controller is compact, has a modular structure and can be used extremely flexibly. The PSC1 makes it possible to project tailor-made safety-related solutions, whether for individual machines or highly complex installations. Furthermore, the PSC1 can make a contribution towards the realization of Industry 4.0 concepts.

The PROTECT PSC1 consists of freely programmable compact PLCs with IO extension modules for signal processing of mechanical and electronic safety switchgear. The compact controllers can be equipped with a universal communication interface. This enables the selection and implementation of different fieldbus protocols easily using software. The PSC1 therefore only requires one hardware element to create a connection to most common forms of fieldbus systems – which is a significant advantage, particularly considering aspects of cost. 

The modular structure of the new Schmersal control system is of interest particularly with regard to Industry 4.0 concepts. The aim here, among other things, is to produce individualized products up to single units cost effectively. To achieve this, modularly assembled systems are often needed in which control functions are distributed on smaller, decentralized units that are networked together. Here, the PSC1 from Schmersal offers the means to configure individual protection systems on a software basis. Furthermore, safe communication between different PSC1 controllers is facilitated via Ethernet SDDC (Safe Device to Device Communication). This simplifies the setup of complex, multi-part installations with networked safety subsystems. 

Another advantage of PSC1: Owing to the optionally integrated SD bus gateway, additional non-secure diagnostic signals from connected sensors can be transmitted via a standard bus system to an automation control system. This also allows signals to be evaluated that are relevant for preventing downtimes and increasing plant availability – and this in turn facilitates a rise in efficiency.


The Schmersal PSC1 configurator is an online tool, which is available 24/7, allowing machine tool builders and machine operators to easily and quickly configure a safe control system for their equipment according to their individual needs. The PSC1 configurator is self-explanatory, easy to use and provides a meaningful planning tool for designers in just minutes. It is available as a web version here: PSC1 configurator