The Output Extensions by Schmersal are engineered to expand the functionality of safety control systems by providing additional safety outputs for machine control and shutdown functions. These modules are part of the PROTECT SRB series, designed for safe signal processing in industrial automation systems.
They work in conjunction with safety relays and controllers to evaluate safety signals from devices such as emergency stop buttons, safety switches, guard locking systems, and sensors, ensuring that all connected equipment responds correctly to safety commands.
Output extensions are particularly useful in applications where multiple actuators or machines must be controlled simultaneously. By expanding the number of available outputs, these modules allow a single safety system to manage complex operations without compromising safety integrity.
These modules operate using conventional relay technology with internally redundant circuits and positively driven contacts, ensuring high reliability and fail-safe operation.The system also supports safe shutdown functions (STOP 0 and STOP 1) in accordance with EN 60204-1, making it suitable for critical safety applications.
Advanced variants include features such as adjustable drop-out delays, multiple signalling outputs, and LED status indicators, allowing better monitoring, diagnostics, and control of machine processes.
With modular design and easy DIN-rail mounting, these output extensions can be seamlessly integrated into control panels and automation systems, providing a scalable and efficient solution for modern industrial safety requirements.
Key Features & Specifications
• Expansion of safety outputs for complex automation systems
• Compatible with safety relays and controllers (SRB series)
• Safe signal evaluation for E-STOP, safety switches, and interlocks
• Support for STOP 0 and STOP 1 safety functions (EN 60204-1 compliant)
• Internally redundant relay design with positively driven contacts
• Multiple safety contacts and signalling outputs (e.g., 4 safety outputs, 2 signalling outputs depending on model)
• Adjustable drop-out delay for controlled shutdown applications
• LED status indicators for diagnostics and monitoring
• DIN rail mounting for easy installation
• High safety performance (up to Category 4 / PL e depending on system configuration)
• Compatible with PLC and industrial automation systems
Applications
Output Extensions by Schmersal are widely used in:
• Industrial automation and machine safety systems
• Conveyor and material handling equipment
• Robotic work cells and automated production lines
• Packaging and processing machinery
• Multi-machine safety control systems
• Manufacturing plants requiring distributed safety outputs
The Output Extensions by Schmersal provide a scalable and reliable solution for expanding safety control systems, enabling efficient signal distribution, enhanced machine safety, and seamless integration into modern industrial automation environments.
