Auto Restart (Reset/Run) 2-25
3. The drive will then issue an internal Start command to start the drive.
4. If another auto-resettable fault occurs the cycle will repeat itself up to the
number of attempts set in [Auto Rstrt Tries].
5. If the drive faults repeatedly for more than the number of attempts set in
[Auto Rstrt Tries] with less than five minutes between each fault, the
auto-reset/run is considered unsuccessful and the drive remains in the
faulted state.
6. Aborting an Auto-Reset/Run Cycle (see
Aborting an Auto-Reset/Run
Cycle for details).
7. If the drive remains running for five minutes or more since the last reset/
run without a fault, or is otherwise stopped or reset, the auto-reset/run is
considered successful. The entire process is reset to the beginning and
will repeat on the next fault.
Beginning an Auto-Reset/Run Cycle
The following conditions must be met when a fault occurs for the drive to
begin an auto-reset/run cycle.
• The fault must be defined as an auto-resettable fault
• [Auto Rstrt Tries] setting must be greater than zero.
• The drive must have been running,
not jogging, not autotuning, and not
stopping, when the fault occurred. (Note that a DC Hold state is part of a
stop sequence and therefore is considered stopping.)
Aborting an Auto-Reset/Run Cycle
During an auto-reset/run cycle the following actions/conditions will abort
the reset/run attempt process.
• Issuing a stop command from any source. (Note: Removal of a 2-wire
run-fwd or run-rev command is considered a stop assertion).
• Issuing a fault reset command from any source.
• Removal of the enable input signal.
• Setting [Auto Rstrt Tries] to zero.
• The occurrence of a fault which is
not auto-resettable.
• Removing power from the drive.
• Exhausting an Auto-Reset/Run Cycle
After all [Auto Rstrt Tries] have been made and the drive has not
successfully restarted and remained running for five minutes or more, the
auto-reset/run cycle will be considered exhausted and therefore
unsuccessful. In this case the auto-reset/run cycle
will terminate and an
additional fault, “Auto Rstrt Tries” (Auto Restart Tries) will be issued if bit
5 of [Fault Config 1] = “1.”
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