error (
ere
) occurs, cancel the speed mismatch detection function (d23=0). After that, perform tuning again.
If tuning while the motor is rotating cannot be selected
If the "tuning while the motor is rotating under vector control (P04*=3)" cannot be selected due to restrictions on the machinery,
perform the "tuning with the motor stops (P04*=1)" by following the procedure below. Compared to the former tuning, the
latter may show rather inferior performance in the speed control accuracy or stability, perform sufficient tests beforehand by
connecting the motor with the machinery.
(1) For Fuji standard motors 8-series, 6-series, or Fuji VG motors exclusively designed for vector control
Specify the P99* data according to the motor type.
Initialize the motor 1 parameters by setting H03 data to "2."
Specify the F04*, F05*, P02*, and P03* data according to the motor rated values.
Perform the "tuning while the motor stops (P04*=1)."
(2) For motors whose motor ratings are unknown such as ones made by other manufacturers
Specify the F04*, F05*, P02*, and P03* data according to the motor rated values printed on the motor 's nameplate.
Specify motor parameters (the data of P06*, P16* to P23*) by obtaining the appropriate values on the datasheet issued
from the motor manufacturer.
For details of conversion from data on the datasheet into ones to be entered as function code data, contact your Fuji
Electric representative.
Perform the "tuning with the motor stops (P04*=1)."
(3) Tuning (Tune while the motor stops)
Set function code P04* to "1" and press the key. (The blinking of
1
on the LED monitor will slow down.)
Enter a run command. The factory default is " key on the keypad for forward rotation." To select the terminal signal
FWD or REV as a run command, change the data of function code F02.
The moment a run command is entered, the display of
1
lights up, and tuning starts with the motor stopped.
(Maximum tuning time: Approx. 40 s.)
If the terminal signal FWD or REV is selected as a run command (F02 = 1),
end
appears upon completion of the
measurements. Turning the run command OFF completes the tuning.
If the run command has been given through the keypad or the communications link, it automatically turns OFF upon
completion of the measurements, which completes the tuning.
Upon completion of the tuning, the subsequent function code P06* appears on the keypad.
Tuning errors
Improper tuning would negatively affect the operation performance and, in the worst case, could even cause hunting or
deteriorate precision. Therefore, if the inverter finds any abnormality in the tuning results or any error in the tuning process, it
displays
er7
and discards the tuning data.
Listed below are possible causes that trigger tuning errors.
Possible tuning error causes
Details
Error in tuning results
- An interphase voltage unbalance or output phase loss has been detected.
- Tuning has resulted in an abnormally high or low value of a parameter due to the output
circuit opened.
Output current error An abnormally high current has flown during tuning.
Sequence error
During tuning, a run command has been turned OFF, or STOP (Force to stop), BX (Coast to
a stop), DWP (Protect from dew condensation), or other similar terminal command has been
received.
Error due to limitation
- During tuning, any of the operation limiters has been activated.
- The maximum frequency or the frequency limiter (high) has limited tuning operation.
Other errors An undervoltage or any other alarm has occurred.
If any of these errors occurs, remove the error cause and perform tuning again, or consult your Fuji Electric representative.
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