Mitsubishi Electric FR-F820-00046, Instruction Manual

Page: 336 / 940

(H) Protective function parameter Parameters
5 - 164
5.7.7 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 5-415 and page 5-423 for the restart operation.)
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.
●
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
logic)" or "164 (negative logic)" in any of Pr. 190 to Pr. 196 (output terminal function selection) to
assign the function.
Pr. Name
Initial
value
Setting
range
Description
65
H300
Retry selection 0 0 to 5
A retry-making fault can be selected.
(Refer to tab. 5-69 on page 5-165.)
67
H301
Number of retries at fault
occurrence
0
0 No retry function
1 to 10
Set the number of retries at a fault occurrence.
A fault output is not provided during the retry
operation.
101 to 110
Set the number of retries at a fault occurrence.
(The setting value minus 100 is the number of retries.)
A fault output is provided during the retry operation.
68
H302
Retry waiting time 1 s 0.1 to 600 s Set the waiting time from a fault occurrence to a retry.
69
H303
Retry count display erase 0 0
Clears the number of successful restarts made by
retries.
Pr. 67 setting Fault output during retry operation Retry count
0
⎯
No retry function
1 to 10 Not provided 1 to 10 times
101 to 110 Provided 1 to 10 times
Tab. 5-68: Setting the retry function parameters