4.13 Operation setting at fault occurrence
Recover by retry operation at fault
Output fault code from terminal
Do not input/output phase loss alarm
4.13.1 Retry function (Pr. 65, Pr. 67 to Pr. 69)
If a fault occurs, the inverter resets itself automatically to restart. You can also select the fault for a retry.
When automatic restart after instantaneous power failure is selected (Pr. 57 Restart coasting time
operation is performed at retry operation as at an instantaneous power failure. (Refer to page 136 for the restart
Number of retries at fault
Retry waiting time
Retry count display erase
The above parameters can be set when Pr. 160 User group read selection = "0". (Refer to page 173)
Retry success example
Retry success count
Retry failure example
Fault code output function
Input/output phase loss
Success count + 1
Operation setting at fault occurrence
Parameter that must be Set
Pr. 65, Pr. 67 to Pr. 69
Pr. 251, Pr. 872
0 to 5
A fault for retry can be selected. (Refer to the next page)
No retry function
Set the number of retries at fault occurrence.
1 to 10
A fault output is not provided during retry operation.
Set the number of retries at fault occurrence. (The
101 to 110
setting value of minus 100 is the number of retries.)
A fault output is provided during retry operation.
Set the waiting time from when an inverter fault occurs
0 to 10s
until a retry is made.
Clear the number of restarts succeeded by retry.
Retry operation automatically resets a fault and
restarts the inverter at the starting frequency when the
time set in Pr. 68 elapses after the inverter is tripped.
Retry operation is performed by setting Pr. 67 to any
value other than "0". Set the number of retries at fault
occurrence in Pr. 67.
When retries fail consecutively more than the number
of times set in Pr. 67, a retry count excess fault (E.RET)
occurs, resulting in inverter trip.
(Refer to retry failure example)
Use Pr. 68 to set the waiting time from when the
inverter trips until a retry is made in the range 0 to 10s.
Reading the Pr. 69 value provides the cumulative
number of successful restart times made by retry. The
cumulative count in Pr. 69 is increased by 1 when a
retry is regarded as successful after normal operation
continues without faults occurring for more than four
times longer than the time set in Pr. 68 after a retry
(When retry is successful, cumulative number of retry
failure is cleared.)
Writing "0" in Pr. 69 clears the cumulative count.
During a retry, the Y64 signal is on. For the Y64 signal,
assign the function by setting "64 (positive operation)"
or "164 (negative operation)" in any of Pr. 190 to Pr. 196
(output terminal function selection) .
Changing the terminal assignment using Pr. 190 to Pr. 196
(output terminal function selection) may affect the other
functions. Make setting after confirming the function of each