Level up your safety with the SX6 safety module from STOBER

The sixth generation range offers powerful drive controllers for high-efficiency, multi-axis applications. It includes the compact SC6 stand-alone device as well as the SI6, which eliminates the need for redundant power supply units thanks to a central supply module and was designed for controller-based applications in multi-axis drive systems.

The SX6 safety module represents a brand-new addition to the range and can be equipped as an option for both series. It is suitable for safety-related applications up to SIL 3, PL e (category 4) in accordance with DIN 61800-5-2 or DIN EN ISO 13849-1. The SX6 enables the conventional Safe Torque Off (STO), Safe Stop 1 (SS1) and Safe Stop 2 (SS2) stop functions.

A specific highlight is that the STO safety function can also be activated individually for each axis on multi-axis controllers. The SX6 also features Safely-Limited Speed (SLS) and Safe Speed Range (SSR), Safe Direction (SDI), Safely-Limited Increment (SLI) and Safe Operating Stop (SOS).

Explains Martin Preece, Head of the STOBER's UK Subsidiary: "We have developed the SX6 safety module in close collaboration with safe automation technology specialist Pilz.

"To enhance the productivity and availability of the machine, we have broadened the monitoring systems for safety functions beyond the fundamental standardised requirements."

Continues Martin: "Through position-based limit value monitoring and the proactive suppression of interference signals, we can achieve the desired limit values with minimal disruption.

"Featuring a consistent two-channel structure, the SX6 tests the integrated components upon every device start-up, after every STO and during operation. This eliminates cyclical function tests of safety functions that are subject to documentation at the end-customer's location."

STOBER has also revised the switch-off channels of the STO and SS1 stop functions. At five and six milliseconds, respectively, they have become significantly faster. These short-worst- case response times, minimised safety distances and, above all, fast restoration of availability significantly reduce downtimes for customers and thus increase system availability.

SX6 is controlled via EtherCAT. This is based on the secure Safety-over-EtherCAT protocol (Fail Safe over EtherCAT, FSoE).

Concludes Martin: "What's more, no special motors, encoders, cables or standstill or speed monitors are required to operate the SX6. When servicing is required, companies can use an SD card as a data storage device to transfer an existing safety configuration to other controllers quickly and easily. It represents a new level of safety for a wide variety of industries and applications."