Verification and validation 461
12. Verify by disconnecting the PROFINET cable from the fieldbus adapter that
correct FSO module is passivated and SSE function is activated.
13. Make sure that the drive event log does not contain any unexpected entries. See
chapter Fault tracing for details.
14. Make sure that the diagnostic messages at the safety controller station (PLC) do
not contain any unexpected entries.
Validation of the safety encoder interface
It is necessary to validate the encoder interface and the safety functions using the
safe speed information from the safety encoder.
Make sure that the FSE-31 safety encoder interface and the safety encoder are
commissioned correctly according to the FSE module manual and the instructions of
the encoder manufacturer. See the commissioning test chapter in the FSE module
manual.
The following steps validate the diagnostic reaction of the FSO and FSE modules in
case of cable faults of the safety encoder.
If an encoder or FSE module failure occurs, the reaction depends on the value of
parameter S_ENCGEN.11 FSE diagnostic failure reaction (STO, No STO, or Est
switch not active load).
Validation procedure:
1. Make sure that the correct installation instructions are followed when installing the
safety encoder (see the FSE module manual and the encoder manual).
2. Make sure that safety encoder is configured into use via FSO-21 parameters
according to the instructions given in section Configuring the safety encoder
interface on page 313.
3. Make sure that there are no configuration or sanity check errors present in the
safety configuration.
4. Make sure that the encoder resolution (parameter 92.10 Pulses/revolution in the
safety configuration of the FSO module) is set according to the specification of the
installed encoder.
5. Make sure that the encoder diagnostics parameters S_ENCGEN.11
,
S_ENCGEN.14
, and 92.17 are configured according to the encoder, and the
application requirements.
6. Make sure that drive parameter 90.45 Motor feedback fault = Warning. Note: For
a DCS880 drive, the equivalent parameter/setting is 31.35 Motor feedback fault =
EMF/Warning.
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