Mitsubishi Electric FR-A820-00046 Instruction Manual page 769

Fr-a800 series
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Parameters
● The pre-charge function valid/invalid settings and pre-charge ending conditions are as follows:
Pr. 127 setting
9999
Other than 9999
Tab. 5-238: Settings of the pre-charge function
When two or more ends conditions are satisfied, the pre-charge operation ends by the first-
satisfied condition.
NOTES
During the pre-charge operation, it is regarded as integrated value=estimated value. The motor
speed may drop shortly from the automatic switchover frequency depending on the parameter
settings.
Parameter changes and switchover to the second PID control are applied immediately. If PID con-
trol has not started when the settings were changed, PID control starts with changed settings. (If
PID control has already started, these settings do not apply. If the changed settings already satis-
fies a condition to start PID control, the PID control starts as soon as these are changed.)
The pre-charge also ends when PID control is set to invalid, the start command has been turned
OFF, and output has been shut off.
FR-A800
Pre-charge ending condition setting
Pr. 761 setting
Pr. 762 setting
9999
9999
Other than 9999
9999
Other than 9999
Other than 9999
(A) Application parameters
Pre-charge
function
X77 signal
Disabled
Not assigned
Assigned
Not assigned
Assigned
Not assigned
Enabled
Assigned
Not assigned
Assigned
Valid pre-charge ending
condition
X77
Time
Time
X77
Result
Result
X77
Result
Time
Result
Time
X77
5 - 567

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