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7.2 Clearing a Fault
If the unit is programmed to automatically restart after a particular fault, the display indicates that the unit will
restart and will count down the seconds remaining to restart on the display. The countdown can be interrupted
by pressing and holding the UP and DOWN arrow keys. The load will immediately restart.
For faults that allow an automatic restart, the default number of restarts after a fault is zero. If the end user
desires the unit to automatically restart after a fault, the number of restarts allowed and the time between fault
and restart must be programmed under 1.2.2 NUMBER OF AUTO RESTARTS.
If the drive has exceeded the programmed number of auto restarts, or if auto restarts have not been enabled,
the display will indicate the fault on the top line and the second line will read RESTART? ENTER. Press
ENTER to clear the fault and restart the load. The fault counters in the Restart Log will all be reset to zero.
See Section 3.6, Restart Log, for more information.
The 1.2.1 ENABLE RESTART parameter allows the drive to restart automatically after a fault. This parameter
also enables to drive to initialize in AUTO mode when the input power has been cycled OFF/ON and the drive
is energized. The factory default setting allows auto restarts. See Table 19 for more information.
Certain faults do not allow an auto restart. These faults generally indicate the possibility of damage to the drive
and/or the load or indicate the possibility of a dangerous condition. When this type fault occurs, the display
will read NO AUTO RESTART. When this type fault occurs, contact the factory for assistance before restarting
or troubleshoot the system thoroughly. These faults can be cleared only by cycling input power OFF/ON
or by holding the UP and DOWN arrow keys for 3 seconds.
There are several conditions where the drive will indicate a fault, but the fault will not be recorded in the fault
log. These faults occur only when the drive is energized from utility mains and is initializing. If any condition
including ground fault, pre-charge fail, high input voltage or low input voltage is detected, the display will
indicate the fault and wait for the condition to resolve before entering normal operating mode. If these
conditions occur after the drive has initialized, a fault will be logged and can be cleared in the normal manner.
WARNING: The drive may start automatically without warning when operating conditions permit. Make
certain input power is disconnected before servicing the unit or its connected loads.
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