Safety Brake Systems for Vertical Axis Applications

Gravity-Loaded Axis Protection in Robotics and Automation

Safety considerations for vertical axes in robotics and automated systems are critical for personnel protection and equipment integrity. mayr® power transmission presented the latest generation of ROBA® topstop® safety brakes and associated monitoring systems at sps 2025 in Nuremberg.

System Architecture and Operating Principles

The ROBA® topstop® safety brake operates on a fail-safe principle, engaging automatically when de-energized. This design ensures load retention during power interruptions or emergency stop conditions, preventing uncontrolled axis movement. The brake units are positioned between motor and output, enabling retrofit installation in existing systems.

The mechanical design addresses industrial environment requirements through sealed interfaces utilizing O-ring gaskets for dust and moisture protection. Standard configurations achieve IP66 ingress protection rating. Adaptable flange dimensions facilitate integration with various drive configurations. The system maintains load security even when drives are dismounted, supporting maintenance and transport operations.

Monitoring Technology

The ROBA® brake-checker® module provides brake condition monitoring without additional sensors. System diagnostics are performed through analysis of current and voltage characteristics, enabling condition-based maintenance strategies. Monitored parameters include switching time, coil temperature, and functional reserve capacity.

Integration with the ROBA® gateway module enables network connectivity for data transmission to remote maintenance systems. This configuration supports digital twin implementations and provides operational transparency within drive systems. The architecture facilitates predictive maintenance approaches through continuous monitoring data availability.

Design Validation and Standards Compliance

mayr® provides engineering support through a validation tool incorporating B10d safety characteristic values for system dimensioning per DIN EN ISO 13849-1 requirements. The structured checklist documents compliance with fundamental safety principles and enables standardized brake assessment procedures.

The ROBA® topstop® has received TÜV certification as a “well-tried component” under category 1 classification.

Technical Specifications

• Ingress Protection: IP66 (standard configuration)
• Operating Mode: Fail-safe (de-energized engagement)
• Monitoring Method: Sensorless, current/voltage analysis
• Standards Compliance: DIN EN ISO 13849-1
• Connectivity: Standardized plug interface

Application Sectors

The technology is deployed across multiple industrial sectors including filling systems, machine tools, packaging machinery, elevator systems, wind energy installations, and stage technology applications.