Fuji Electric FRENIC-MEGA, Инструкция по эксплуатации

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4-15
(2) Preparation of machinery
Perform appropriate preparations on the motor and its load, such as disengaging the coupling from the motor and deactivating the
safety devices.
(3) Tuning
Set function code P04* to "1" or "2" and then press the key as shown below.
The inverter waits
for a run command.
Tuning starts with the motor stopped. (Maximum tuning time: Approx. 40 to 80 s.)
If P04* = 2, after the tuning in above, the motor is accelerated to approximately 50% of the base
frequency and then tuning starts. Upon completion of measurements, the motor decelerates to a stop.
(Estimated tuning time: Acceleration time + 20 to 75 s + Deceleration time)
If P04* = 2, after the motor decelerates to a stop in
above, tuning continues with the motor stopped.
(Maximum tuning time: Approx. 40 to 80 s.)
„
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.
/
Run command ON
Enter a run command. (The factory default of a run command source is "Keypad" (F02 = 0), so
press the
or key for forward or reverse rotation, respectively. To use the terminal
command FWD or REV as a run command, change the data of function code F02.)
End of tuning
Run command OFF
Press the
key to select the tuning mode.
Use the /
key to set function code P04 to "1" or "2."
Turn the run command OFF to complete tuning. (If the run command has been given through the
keypad or the communications link, it automatically turns OFF.)
Upon completion of tuning, the subsequent function code appears.