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Safety functions

The robot implements configuration-independent, software-integrated safety functions. Every safety function and every safe input/output is designed in accordance with EN ISO 13849-1 to Performance Level d (PLd) in a Category 3 architecture, corresponding to SIL 2 according to IEC 62061. According to ISO 10218-1:2025, the required performance level may vary depending on the safety function. This robot is a Class II robot in accordance with ISO 10218-1:2025.

Non-parameterizable safety functions (always active):

  • Safe Stop (STO) of the drives and brakes in the base module and in each drive module
  • Safe inputs/outputs (electrical characteristics according to IEC 61131-2)
  • Emergency stop circuit (stop category [0/1] according to IEC 60204-1)
  • Operating mode selection by key switch
  • Fixed, safely reduced speed in manual, HGC and recovery modes (SLS, ≤ 250 mm/s)

Configurable safety functions (RobSafety):

  • Configurable, safely reduced speed in automatic mode (SLS)
  • Safe speed reduction by means of safe trigger inputs (basis for SSM)
  • Safe spatial and axis boundaries / virtual protection zones (SLP)
  • Configurable assignment and response of the safe inputs
WARNING

Hazards associated with robot operation

Operating the robot under unauthorized conditions can result in uncontrolled axis movements and cause serious injury.

► Make sure that the modules and grippers are properly connected and powered so that no hazards arise during operation or in the event of a power outage.

► The system may only be operated using a security configuration that was specified in the risk assessment.

► If external safety devices are used, they must comply with Category 3, Performance Level d, as specified in EN ISO 13849-1.

► The built-in digital inputs and outputs of end effectors (if present) are not protected by the safety functions of RobCo.

Configuration of security functions based on risk assessment

The use and configuration of safety functions and interfaces must comply with the requirements of the risk assessment for each robot application (see Risk assessment).

The stopping time and stopping distance of the robot must be taken into account as part of the risk assessment for the application.

Failure in the safety chain

If the robot system detects a fault in the safety chain – such as an emergency stop being triggered – an emergency stop is initiated.