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Safety sensor with cost-saving features

16 August 2021

THE SCHMERSAL Group has further developed its compact RSS260 safety sensor and equipped it with new software.

 The sensor now offers four additional, optionally selectable functions: 

  • Feedback loop monitoring  
  • Automatic restart / manual restart 
  • Reset 
  • Emergency stop monitoring  

On the F0/F1 version, the RSS260 assumes the tasks of a safety relay module, i.e. monitoring of the movable safety guard as well as of the contactors directly actuated by the sensor outputs – monitoring is carried out by the integrated logic in the sensor, rendering a separate evaluation device unnecessary.   

On the F0 version, the machine restarts automatically as soon as all safety guards have been closed. An additional ‘enable button’, without edge monitoring, can be switched into the feedback loop. The F0 version is suitable for small machines without a protective space that can be accessed behind.  

The F1 version is recommended for smaller systems, where the hazardous area can be accessed by the operator, as it has a reset function. The edge-monitored reset button must be pressed before the machine is restarted – when it is clear that the system is in a safe state and that no one is in the hazardous area. This function is consistent with the ‘manual reset function’ in accordance with EN ISO 13849-1. 

The RSS260 with Q function is suitable for machines where the use of an emergency stop switch is compulsory. 

The RFID safety sensor offers a number of positives, even in the standard version: with its compact dimensions (40 x 18 x 30 mm), the RSS260 with matching sensor-target combination is suitable for mounting on aluminium profiles as well as for use on many other door formats such as the common perspex doors and panels. The sensor has both an AS-i-Safety-at-Work interface and an interface for the Schmersal SD bus. The serial diagnostic function (SD) enables series connection of up to 31 safety sensors and solenoid interlocks, as well as the transmission of non-safe diagnostic and status data for the connected devices.