The following publications, for example, indicate which measures can or should be taken to secure gravity-loaded axes:
– DGUV Division Information Sheet No. 005 09/2012: Gravity-loaded axes (vertical axes)
– DIN EN ISO 16090-1:2019-12: Machine tool safety – Machining centers, milling machines, transfer machines, Annex G: Gravity-loaded axes.
The publications indicate which braking devices are suitable for safeguarding gravity-loaded axes, depending on the particular hazard situation.
The DIN standard is based on the DGUV publication, but in some cases places more stringent requirements on the solution concept. Both publications describe recommendations for cyclic brake tests. In principle, the DIN standard always requires this.
Should a person be able to stay completely or partially below the vertical axis, DIN and DGUV suggest the use of a holding brake in combination with a redundant brake system. Learn more …
For this application, STOBER offers a solution that was developed together with the company Pilz: The SD6 drive controller with the SE6 safety module offers innovative, encoder-independent safety functions and safe brake management for up to two brakes.
The comprehensive safety functions meet the requirements of DNI EN 61800-5-2 and are certified in accordance with SIL 3, PL e (Cat. 4). The SD6 drive controller meets the requirements of DGUV and DIN EN ISO 16090-1:2019-12 for safeguarding gravity-loaded axes, for example, in combination with two other STOBER components. By connecting a STOBER motor with a holding brake and the ServoStop motor adapter with integrated brake, STOBER offers a simple and safe solution for machine designers and engineers.