Mitsubishi Electric 800 Series Instruction Manual page 243

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
for the restart operation.)
Pr.
65 Retry selection
H300
67 Number of retries at fault
H301 occurrence
68 Retry waiting time
H302
69 Retry count display erase
H303
 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". For Pr.67, set the number of retries at activation of
the protective function.
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 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.
242
5. PARAMETERS
5.7 (H) Protective function parameter
Name Initial value
0
0
1 s
0
Fault output during retry operation
―
Not provided
Provided
Setting range
0 to 5 A retry-making fault can be selected. (Refer to the table on
the next page.)
0 The retry function disabled.
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.
0.1 to 600 s Set the time delay from when an inverter fault occurs until the
retry operation starts.
0 Setting "0" clears the retry success counter ("retry success"
means that the inverter successfully restarts).
Retry count
No retry function
1 to 10 times
1 to 10 times
page 448
Description