SEW-Eurodrive INTERBUS UFI11A, Manual

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Manual – Fieldbus Interface INTERBUS UFI11A
Error Response
6 Error Response
6.1 Fieldbus timeout
Switching off the fieldbus master or a wire break in the fieldbus cabling leads to a field-
bus timeout in the UFI11A. The connected inverters are set to a safe status by zeros
being sent on the process output data. This corresponds to a rapid stop on control word
1. The fieldbus timeout error is self-resetting, meaning the inverters will begin receiving
the current process output data from the master immediately after fieldbus communica-
tion is re-established. This error response can be deactivated using P831 on the
UFI11A.
6.2 SBus timeout
If one or more inverters on the Sbus can no longer be addressed by the UFI11A, the
UFI11A enters error code 91, "System error," in status word 1 of the corresponding in-
verter. The SYS-FLT LED lights up and the error is also displayed via the diagnostic in-
terface. P815 SBus timeout delay must be set to a value other than 0 on the inverter if
it is to stop. The error is self-resetting on the UFI11A, meaning the current process data
are exchanged again immediately after communication resumes.
6.3 Unit errors
UFI11A fieldbus interfaces detect a range of hardware defects and respond with an in-
hibit condition. Refer to the list of errors for the exact error responses and measures to
remedy the problem. A hardware defect means error 91 is entered in the process input
data of the fieldbus in status word 1 of all inverters. The SYS-FLT LED on the UFI11A
then flashes evenly. The exact error code is displayed in the status of the UFI11A using
the diagnostic interface of MOVITOOLS.