Mitsubishi Electric FR-D720S SC EC, Инструкция по эксплуатации

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Parameter Operation setting at alarm occurrence
FR-D700 SC EC 6 - 139
Retry operation automatically resets a fault and restarts the inverter at the starting frequency
when the time set in Pr. 68 elapses after the inverter is tripped.
Retry operation is performed by setting Pr. 67 to any value other than "0". Set the number of re-
tries at fault occurrence in Pr. 67.
When retries fail consecutively more than the number of times set in Pr. 67, a retry count excess
fault (E.RET) occurs, resulting in inverter trip. (Refer to retry failure example in Fig. 6-77.)
Use Pr. 68 to set the waiting time from when the inverter trips until a retry is made in the range
0.1s to 600s. (When the setting value is "0s", the actual time is 0.1s.)
Reading the Pr. 69 value provides the cumulative number of successful restart times made by
retry. The cumulative count in Pr. 69 is increased by 1 when a retry is regarded as successful
after normal operation continues without faults occurring for more than four times longer than
the time set in Pr. 68 after a retry start. (When retry is successful, cumulative number of retry fail-
ure is cleared.) Writing "0" to Pr. 69 clears the cumulative count.
During a retry, the Y64 signal is on. For the Y64 signal, assign the function by setting "64" (pos-
itive logic) or "164" (negative logic) to any of Pr. 190, Pr. 192 or Pr. 197.
I001178E
Fig. 6-76: Retry success example
I001179E
Fig. 6-77: Retry failure example
Output frequency
Pr. 68
×
5
Retry success
Retry success count
Success count + 1
Alarm occurrence
Retry start
Time
Output frequency
Alarm signal
Retry failure E.RET
Time
First
retry
Second
retry
Third
retry
Alarm
occurrence
Alarm
occurrence
Alarm
occurrence