Responsibilities; Intentional Misuse; Safety Considerations; Response Times - ABB FSO-21 User Manual

30 Safety information and considerations

Responsibilities

It is the responsibility of the machine builder / OEM / system integrator to make sure
that the essential health and safety requirements specified in the Machinery Directive
are met.
If you detect any failure in safety functions, contact your local ABB representative.

Intentional misuse

Use the FSO and FSE modules according to the instructions given in the user's
manuals. ABB is not responsible for any damage caused by the misuse of the
modules.
The FSO and FSE modules are not designed to protect a machine against intentional
misuse or sabotage.

Safety considerations

Note: After you initially start up the FSO module and also after you later modify any
application parameters or the configuration, you must check the safety of the entire
system by doing a verification according to the system safety verification plan and by
doing a validation of the correct operation of the safety application. See chapter
Verification and validation.


Response times

Safety function response time and FSO response times are specified in section
Response times on page 437.
The acceptable speed limits must be configured so that the speed cannot
accelerate/decelerate from an acceptable speed to a dangerous speed faster than
the response time of the FSO module.


FSO diagnostics

The FSO module performs extensive auto diagnostics tests during the runtime
operation on FSO internal parts as well as the communication and STO connection
between the FSO and the drive. The FSO goes into the Fail-safe mode if it detects a
fault.
• The communication between the FSO and the drive is diagnosed continuously.
• The STO connection between the FSO and the drive STO connector is diagnosed
during the power-up and periodically during the runtime.