Retry Function - Mitsubishi Electric FR-A820-00046 Instruction Manual

(H) Protective function parameter
5.10.8

Retry function

This function allows the inverter to reset itself and restart at activation of the protective function (fault
indication). The retry generating protective functions can be also selected.
When the automatic restart after instantaneous power failure function is selected (Pr. 57 "Restart
coasting time" ≠ 9999), the restart operation is also performed after a retry operation as well as after
an instantaneous power failure. (Refer to page page 5-581 and page 5-590 for the restart operation.)
Pr.
65
H300
67
H301
68
H302
69
H303
Setting the retry function (Pr. 67, Pr. 68)
● When the inverter protective function is operating (fault indication), the retry function automat-
ically cancels (resets) the protective function after the time set in Pr. 68. The retry function then
restarts the operation from the starting frequency.
● Retry operation is enabled when Pr. 67 ≠ "0". For Pr. 67, set the number of retries at activation of
the protective function.
Pr. 67 setting
101 to 110
Tab. 5-120: Setting the retry function parameters
● When retries fail consecutively more than the number of times set in Pr. 67, a retry count excess
(E.RET) occurs, resulting in an inverter retries. (Refer to the retry failure example.)
● Use Pr. 68 to set the waiting time from a protective function activation to a retry in the range of
0.1 to 600 s.
● During retry operation, the during retry (Y64) signal is ON. For the Y64 signal, set "64 (positive
operation)" or "164 (negative operation)" in any of Pr. 190 to Pr. 196 (output terminal function
selection) to assign the function.
5 - 318
Name
Retry selection
Number of retries at fault
occurrence
Retry waiting time
Retry count display erase
Fault output during retry operation
⎯
0
1 to 10 Not provided
Provided
Initial Setting
Description
value range
A retry-making fault can be selected.
0 0 to 5
(Refer to tab. 5-121 on page 5-319.)
0 No retry function
Set the number of retries at a fault occurrence.
1 to 10
A fault output is not provided during the retry
0
operation.
Set the number of retries at a fault occurrence.
101 to 110 (The setting value minus 100 is the number of retries.)
A fault output is provided during the retry operation.
1 s 0.1 to 600 s Set the waiting time from a fault occurrence to a retry.
Clears the number of successful restarts made by
0 0
retries.
Parameters
Retry count
No retry function
1 to 10 times
1 to 10 times