4.18 Operation setting at fault occurrence
Recover by retry operation at fault
Output fault code from terminal
Do not output input/output phase
The motor is decelerated to stop at
motor thermal activation
4.18.1 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 ≠ "9999"), restart
operation is performed at retry operation as at an instantaneous power failure. (Refer to page 266 for the restart
Number of retries at fault
Retry waiting time
Retry count display erase
Retry success example
Retry success count
Retry failure example
Fault code output function
Input/output phase failure
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 tripped due
to the fault.
⋅ 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, and the inverter trips.
(Refer to retry failure example)
⋅ Use Pr. 68 to set the waiting time from when an inverter
fault occurs until a retry is made in the range 0 to 10s.
(When the setting value is "0s", the actual time is 0.1s.)
⋅ 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 start.
(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
logic)" or "164 (negative logic)" in any of Pr. 190 to Pr.
196 (output terminal function selection) .
When terminal assignment is changed using Pr. 190 to Pr.
196, the other functions may be affected. Set parameters
after confirming the function of each terminal.