32 Safety information and considerations
functional safety standards (eg, ISO 12100, 13849-1, IEC 62061). These are also
introduced in Functional safety; Technical guide No. 10 (3AUA0000048753 [English]).
Before you take into use any system where FSO and its safety functions are used, or
if you later modify any application parameters or the configuration related to safety,
you must ensure the safety of the entire system. This is done by verifying and
validating the correct operation of the safety application according to the system
safety verification plan. See chapter Verification and validation.
Meeting the requirements of the Machinery Directive
If the machine, where FSO is part of the safety system, is going to be sold or taken
into use in Europe, it is the responsibility of the machine builder / OEM / system
integrator to make sure that the machine is safe to use and the essential health and
safety requirements (EHSR) of the Machinery Directive are fulfilled. The
requirements in the applicable standards must also be met and the FSO module must
be used according to the instructions provided in this manual.
Responsibilities
As a component manufacturer, ABB is only responsible for the safety and conformity
of their manufactured products, not of the systems where these products are used. 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-related parts
The FSO module and the drive Safe torque off (STO) channel/function are safety
relevant, and the rest of the drive is considered as not safety relevant. For example,
the drive regular I/O cannot be used for requesting safety functions on the FSO.
Limitations of Safe torque off (STO) function
The Safe torque off function can be used for stopping the drive in the operational
mode. If a running drive is stopped by using the STO function, the drive stops by
coasting. STO function can also be used for prevention of unexpected start-up
according to the limitations of IEC 60204-1, 5.4 and ISO 14118.
The Safe torque off function does not disconnect or isolate the voltage of the main
and auxiliary circuits of the drive. Therefore maintenance work on any electrical parts
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