Program features 133
Drive faults
Drive faults are considered as critical and non-critical faults. See chapter Fault tracing
on page 289.
• critical faults trip the drive immediately, drive stops modulation and closes the
brake.
• non-critical faults allow the drive to continue modulation until start command is
removed, that is the elevator continues travel to the destination floor and drive
trips when it is stopped.
Automatic fault reset
The Automatic fault reset function resets pre-defined drive faults to ensure the
operation of the drive in temporary fault situations.
When any one of the selected faults occur, a trial time defined with parameter 46.82
AUTORST TRL TIME starts and a fault reset is generated. You can define the
number of resets to be generated within the trial time with parameter 46.81
AUTORESET TRIALS. With parameter 46.83 AUTORESET DELAY, you can also
define for how long the drive waits after a fault before attempting a fault reset.
Settings
Diagnostics
Manual fault reset
In addition to automatic fault reset, faults can also be reset from an external source
selected with parameter 46.80 FAULT RESET.
Settings
Parameters Additional information
46.81 AUTORESET TRIALS Defines the number of the automatic fault resets the drive performs within
the time defined with parameter 46.82.
46.82 AUTORST TRL TIME Defines the time within which automatic fault resets are performed after
the drive has tripped on a fault.
46.83 AUTORESET DELAY Defines for how long the drive will wait after a fault before attempting an
automatic fault reset.
46.84 AUTORESET SEL Selects the faults to be automatically reset.
Signals Additional information
Actual signals
05.02 LIFT FW Elevator fault status word with fault bits.
Parameters Additional information
46.80 FAULT RESET Selects the source for the fault reset signal.
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