504 Fault tracing
User-selectable events for safety fieldbus failures
The table below lists user-selectable events related to safety fieldbus failures.
1)
If you select Fault for parameter SBUSGEN.10 STO indication passivation, the FSO module generates a
warning at the passivation, and a fault only after the system is at the Safe state.
Note: If you select None for parameter SBUSGEN.10 STO indication passivation, the FSO module generates
no event when it detects a failure in the safety fieldbus communication.
Auxiliary codes
Faults, warnings and events have 32-bit auxiliary codes, which help in finding the
problem. See the tips in the Drive Composer PC tool for more information on the
auxiliary codes.
FSO recovery
External fault
An external fault in a safety circuit can lead either to safe state or fail-safe state
activation in FSO module. Safe state means STO activation with software indication
according to Faults, warnings and events table on page 491. Resetting the drive is
needed before resuming normal operation.
With fail-safe state, STO is activated and a relevant fault code is shown, and in this
case, drive reset and FSO reboot are required before resuming normal operation.
If FSO enters the fail-safe state because of external fault that can be repaired,
resuming to normal operation can take place after FSO reboot. The steps for
recovering from the fault situation are as follows:
1. Check the reason for the event from the Drive composer event log.
2. Repair the cause of the fault by following the instructions in column What to do of
the table Faults, warnings and events.
3. Reboot the FSO with one of the methods below:
• Disconnect the X112 connector and reconnect it (power off and on), or
• Reboot the FSO with the Reboot FSO button in the Drive composer pro PC
tool (Safety settings), or
Incident Events depending on
the event type selection (parameter SBUSGEN.10)
Fault Warning Event
Problem in the
safety fieldbus
communication
AAB6 FSO safebus
passivation (warning)
1)
AAB6 FSO safebus
passivation
BAB6 FSO safebus
passivation
System at safe
state
7A99 FSO passivated AA99 FSO passivated BA99 FSO passivated
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