Mitsubishi Electric FR-A800 Series Instruction Manual page 428

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. (For restart operation,
refer to page 628
Pr.
65
Retry selection
H300
67 Number of retries at fault
H301 occurrence
68
Retry waiting time
H302
69 Retry count display
H303 erase
 Setting the retry function (Pr.67, Pr.68)
• When the inverter protective function is operating (fault indication), the retry function automatically cancels (resets) the
protective function after the time set in Pr.68. The retry function then restarts the operation from the starting frequency.
• The retry function is enabled when the Pr.67 setting is other than "0". Set the number of retries at activation of the protective
function in Pr.67.
Pr.67 setting
0
1 to 10
101 to 110
• 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 seconds.
• 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.
 Retry count check (Pr.69)
• Reading the Pr.69 value provides the cumulative number of successful restart times made by retries. The cumulative count
in Pr.69 increases by 1 when a retry is successful. Retry is regarded as successful when normal operation continues
without a fault for the Pr.68 setting multiplied by four or longer (3.1 seconds at the shortest). (When retry is successful, the
cumulative number of retry failures is cleared.)
• Writing "0" in Pr.69 clears the cumulative count.
Pr.68
Inverter
output
frequency
0
Fault occurrence
Retry success count
Y64
Downloaded from ManualsNet.com
and page 635 for selection.)
Initial
Name
value
0
0
1 s
0
Fault output during retry
operation
—
Not available
Available
Retry success
Pr. 68 × 4
(If it is below 3.1s, 3.1s is set.)
Retry start
Success count + 1
ON
Retry success example
search engine
Setting range
0 to 5 Faults which trigger the retry operation can be selected.
0 The retry function disabled.
Set the number of retries at a fault occurrence.
1 to 10
A fault output is not provided during the retry operation.
Set the number of retries at a fault occurrence. (The setting value minus
101 to 110 100 is the number of retries.) A fault output is provided during the retry
operation.
Set the time delay from when an inverter fault occurs until the retry
0.1 to 600 s
operation starts.
Setting "0" clears the retry success counter ("retry success" means that
0
the inverter successfully restarts).
Retry count
No retry function
1 to 10 times
1 to 10 times
Pr.68
Inverter
output
frequency
0
Time
First
retry
Fault
occurrence
Fault signal
(ALM)
ON
Y64
Description
Pr.68 Pr.68
Second Third
retry retry
Retry failure
Fault Fault
occurrence occurrence
ON ON
Retry failure example
5.10 (H) Protective function parameter
1
2
3
4
5
6
7
8
9
10
Time
(E.RET)
ON
427
5. PARAMETERS