Overview 37
from an FSO internal fault. Some safety functions can be permanently active. If the
drive does not fulfill the commands of the FSO, the FSO stops the drive modulation
using the Safe torque off (STO) function.
If the drive is connected to a safety PLC, the safety of the fieldbus communication
can be secured with the PROFIsafe over PROFINET technology. The safety PLC is
connected to the FB module, which communicates with the FSO module. For more
information, see chapter PROFIsafe.
If a pulse encoder is used in the safety system, it is connected to the FSE-31 module,
which communicates with the drive and the FSO-21 module.
Safety functions supported by the FSO module are presented in chapter Safety
functions.
FSO module version handling
To ensure backward and forward compatibility with the ACS880/DCS880 drives, the
FSO-21 module has a version handling system. Both the FSO module and the
ACS880/DCS880 drive firmware must support the used safety functions.
You can always replace the FSO-21 module with a newer revision and use the same
configuration file with the new revision. If you replace an FSO-12 module with an
FSO-21 module, you have to re-configure the FSO module and safety functions.
Each time you make any changes in the safety system, you must do the acceptance
test to each safety function using the checklists described in chapter Verification and
validation.
Note: Due to an update in functionality related to a situation where drive modulation
is lost when SLS function is active, it is recommended to update all FSO modules to
revision H (or later).
Each new revision of the FSO-21 module supports all or most functions of previous
FSO-21 module revisions and it can be used together with previous
ACS880/DCS880 drive firmware versions. In addition, previous FSO-21 module
revisions can be used together with new ACS880/DCS880 drive firmware versions. In
this case, the drive supports only the functions of the previous FSO-21 module
revision. For more information on product compatibility, see section Compatible
products on page 18.
In Drive composer pro PC tool, each safety function and parameter group has a
version parameter. With these parameters, the user selects the desired versions.
Only the versions that are supported by both the drive firmware and the FSO module
are shown in the Drive composer pro.
To Next Page
Loading...
