Vacon 100X series, Applications Manual

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Parameters vacon • 142
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6
6.2.15 Automatic Reset
P3.10.1
AUTOMATIC FAULT RESET
0: Disabled
1: Enabled
The automatic reset function deletes fault state when the fault cause has been eliminated and
the wait time P10.2 has elapsed. Parameter P10.4 determines the maximum number of auto-
matic resets that can be effected during the trial time set by parameter P10.3. The time count
starts from the first automatic reset. If the number of faults detected during the trial time ex-
ceeds the values of trials, the fault status becomes permanent and a reset command is need-
ed.
P3.10.2 W
AIT TIME
Time after which the converter attempts to restart the motor automatically after the fault has
been cleared.
P3.10.3 A
UTOMATIC RESET TRIES
Trials attempted during one hour.
P3.10.4 R
ESTART
F
UNCTION
We can chose what kind of start function we want to use when doing an autoreset of the drive.
If run command is kept active during the autoreset sequence.
0= Flying Start
1= Start Function (according to P3.2.4)
P3.10.5
TO
P3.10.7 U
NDERLOAD
R
ESET TIME
1 -3
Undervoltage fault is reset without limitations, also when P10.1 is not active. The drive will re-
start according the delay times defined by the parameters P14.1.1 to P14.1.4.
Underload (dry run) fault is reset when P3.10.1 is active, without limitations in number, but ac-
cording to a specific time schedule.
At first fault, autoreset is done after time 1 (P3.10.5). If underload fault happens again, after the
number of tries defined in P3.10.8, delay becomes time 2 (P3.10.6).
Similarly, delay will change to time 3 (P3.10.7) if further tries are unsuccessful.
Five minutes of correct working will reset the tries counter.
Any other fault:
Generic autoreset is enabled by P3.10.1. Faults will be reset after the wait time (P3.10.2), un-
less the number of faults in a hour overcomes the threshold in P3.10.3. Any fault event, apart
undervoltage and underload, causes counter increasing.
Note : fault led (red) blinks during the autoreset wait time.
P3.10.8 U
NDERLOAD
T
RIES
T1, T2
Trials attempted during Underload Reset time 1 and Underload Reset time 2.