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160 Rockwell Automation Publication 2097-UM001D-EN-P - November 2012
Chapter 8 Kinetix 300 Drive Safe Torque-off Feature
Important Safety Considerations
The system user is responsible for the following:
•
Validation of any sensors or actuators connected to the drive system
•
Completing a machine-level risk assessment
•
Certification of the machine to the desired ISO 13849-1 performance
level
•
Project management and proof testing
•
Programming the application software and the device configurations in
accordance with the information in this safety reference manual and the
drive product manual
Safety Category 3 Requirements
Safety-related parts are designed with these attributes:
•
A single fault in any of these parts does not lead to the loss of the safety
function
•
A single fault is detected whenever reasonably practicable
•
Accumulation of undetected faults can lead to the loss of the safety
function, which results in an uncontrolled coast to stop
Stop Category Definition
Stop category 0 is achieved with immediate removal of power to the actuator.
Performance Level and Safety Integrity Level (SIL) CL3
For safety-related control systems, Performance Level (PL), according to ISO
13849-1, and SIL levels, according to EN 61508 and EN 62061, include a rating
of the systems ability to perform its safety functions. All of the safety-related
components of the control system must be included in both a risk assessment and
the determination of the achieved levels.
See the ISO 13849-1, EN 61508, and EN 62061 standards for complete
information on requirements for PL and SIL determination.
IMPORTANT
In the event of drive or control failure, the most likely stop category is category
0. When designing the machine application, timing and distance should be
considered for a coast to stop. For more information regarding stop categories,
see EN 60204-1.