SICK: Flexi Net – Powerful Safety Controller for Stationary & Mobile Applications

September 10, 2026
Flexi Net: A Dynamic Safety Controller for Modern Machines & Networked Plants
Flexi Net is a powerful safety controller up to PL e for modern machines and networked plants. The scalable control architecture enables CPU expansion by up to twelve modules, such as Flexi IOs and gateways, as well as the networking of several machines in a production line. Flexi Net provides the ability to configure up to 512 function blocks in the logic, especially for complex applications.
TÜV-certified modules make engineering much easier. Cycle times of just 4 ms underscore the performance of Flexi Net. Sensors can be flexibly integrated into the safety controller – also via EFI pro and Flexi Loop. Safe Motion via integrated HTL inputs and application-specific function blocks also meets the requirements of mobile robots.
Flexi Net at a Glance
Features
- Main module can be expanded with twelve Flexi I/O modules
- Powerful logic with up to 512 function blocks
- Safe communication via EFI-pro
- Safe Motion via HTL interface and CANopen
- Response time (Fast shut off): 4.5 ms
- Supports common fieldbuses
- Compatible with Safety Configuration Deployment and Flexi Loop
Benefits
- Scalable and future-proof for stationary and mobile requirements
- Individual safety solutions thanks to versatile configuration options in the Safety Designer
- Simple sensor integration and control networking thanks to safe communication along the production line
- Cost-efficient, safe movement monitoring
- Reduced safety distances thanks to short response times
- Seamless integration into standard machine controllers for comprehensive diagnostics
- Fast configuration transfer and commissioning
- Reduced wiring and number of inputs thanks to safe series connection
For more information on SICK Sensor solutions HERE














