New CMMT-AS-S3 servo drive
Ben Lloyd, Product Manager for Electric Automation at Festo, explains: “The CMMT-AS-S3 delivers the power and precision Festo customers expect, but with extended and integrated safety features. We’ve packaged everything into a compact servo drive that requires no additional wiring or modules, delivering space and cost savings and reducing complexity while meeting the highest standards of functional safety.”
The CMMT-AS-S3 servo drive offers advanced safety and performance in applications ranging from 300 W to 12 kW. Enabling users to achieve up to PLe, SIL3, Category 3 & 4 safety levels, the new servo drive features Safe Torque Off (STO), Safe Brake Control (SBC), Safe Stop 1 and 2 (SS1 and SS2) and Safe Operating Stop (SOS), as well as Safe Maximum Speed (SMS), and Safely Limited Speed (SLS). The CMMT-AS-S3 can be used to achieve extended safety in linear or rotational motion applications in conjunction with all Festo mechanics.
Software engineers benefit from seamless integration with the Festo overall pneumatic and electric automation portfolio with multi-protocol support for common Ethernet-based fieldbuses, such as EtherCAT, EtherNet/IP™, PROFINET and ModbusTCP,
Standard safety parameters can be set without using software, but programming the CMMT-AS-S3 via the Festo Automation Suite (FAS) saves time and offers guidance at every stage. An intuitive graphical interface makes it simple to achieve safety setup, validation, commissioning, programming, diagnostics, and firmware updates. FAS saves commissioning time by offering realistic preset values and guided validation of safety functions. It also supports I/O and fieldbus configuration and the ability to generate validation reports.
About Festo
Festo is a global leader in automation technology setting international standards in industrial automation and technical education. The company provides pneumatic and electric automation solutions for factory and process automation across a wide range of industries.
Digitalisation, artificial intelligence and the rapidly growing LifeTech sector, including medical technology and laboratory automation, are becoming increasingly important areas of innovation for Festo. Sustainability, reducing its CO2 footprint, digital learning, innovation, performance and speed are key drivers for the company's future.
Festo products and services are available in 176 countries. With around 20,600 employees in more than 250 branch offices in around 60 countries, the company achieved a turnover of €3.33 billion in 2025. More than 8% of this is reinvested in research and development, and as a learning company, 1.5% of turnover is invested in basic and further training.
Festo Didactic, the company’s technical education and training division, is a leading global provider of technical training solutions, offering comprehensive digital and physical learning environments for industrial skills development.
