5-47
H04, H05 Auto-reset (Times and Reset interval)
To automatically exit from the alarm status and restart the inverter, use the retry
functions. The inverter automatically exits from Alarm mode and restarts without
issuing a block alarm even if it has entered the forced Alarm mode. If the inverter
has entered Alarm mode many times in excess of the number of times specified by
function code H04, it issues a block alarm and does not exit Alarm mode for re-
starting.
Listed below are the recoverable alarm statuses of the inverter.
Alarm status
LED monitor
display
Alarm status
LED monitor
display
Overcurrent protection
0c1
,
0c2
or
0c3
Braking resistor
overheated
dbh
Overvoltage protection
0u1
,
0u2
or
0u3
Motor overloaded
0l1
Heat sink overheated
0h1
Inverter overloaded
0lu
Motor overheated
0h4
Number of reset times (H04)
Set the number of reset times for automatic exit from Alarm mode. If the inverter has
entered Alarm mode during the retry times specified, the inverter issues a block
alarm and will not exit from Alarm mode for restarting.
If the "auto-reset" function has been specified, the inverter may automatically restart
and run the motor stopped due to a trip fault, depending on the cause of the tripping.
Design the machinery so that human body and peripheral equipment safety is en-
sured even when the auto-resetting succeeds.
Otherwise an accident could occur.
Reset interval (H05)
Sets the latency time for automatic exit from Alarm mode. Refer to the timing
scheme diagram below.
Operation timing chart
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