Mitsubishi Electric FR-D720S SC EC, Instruction Manual

Page: 288 / 512

Operation setting at alarm occurrence Parameter
6 - 138
6.12 Operation setting at alarm occurrence
6.12.1 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 you have selected automatic restart after instantaneous power failure (Pr. 57
≠
9999), re-
start operation is performed at the retry operation time which is the same of that of a power fail-
ure. (Refer to section 6.11.1 for the restart function.)
The above parameters can be set when Pr. 160 = 0.
Purpose Parameters that must be set
Refer to
section
Recover by retry operation at alarm
occurrence Retry operation Pr. 65,
Pr. 67–Pr. 69 6.12.1
Do not input/output phase failure
alarm Input/output phase failure protection
selection Pr. 251, Pr. 872 6.12.2
Detect an earth (ground) fault at
start Earth (ground) fault detection at start Pr. 249 6.12.3
Pr.
No.
Name
Initial
Value
Setting
Range
Description Parameters referred to
Refer to
Section
65
Retry selection 0 0–5 An alarm for retry can be selected.
57 Restart coasting
time 6.11.1
67
Number of retries at
alarm occurrence
0
0 No retry function
1–10
Set the number of retries at alarm occur-
rence. An alarm output is not provided
during retry operation.
101–110
Set the number of retries at alarm occur-
rence.
(The setting value of minus 100 is the
number of retries.)
An alarm output is provided during retry
operation.
68
Retry waiting time 1 s 0.1–600s
Set the waiting time from when an
inverter alarm occurs until a retry is
made.
69
Retry count display erase 0 0
Clear the number of restarts succeeded
by retry.