Operation Setting At Alarm Occurrence - Mitsubishi Electric FR-D720S SC EC Instruction Manual

Operation setting at alarm occurrence

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