4-11
The default value of the speed regulator is set low to prevent your system from oscillation (hunting). However, hunting
may occur during tuning due to machinery-related conditions, causing a tuning error (
er7
) or a speed mismatch error
(
ere
). If a tuning error (
er7
) occurs, reduce the gain for the speed regulator; if a speed mismatch 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) Data setting
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)."
(2) Tuning
(Tune while the motor stops)
Set function code P04* to "1" and press the
key.
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.
The moment a run command is entered, tuning starts with the motor stopped.
(Maximum tuning time: Approx. 40 s.)
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 on the keypad.
e
f
g
h
i
ACC ACC
DEC DEC
Tuning operation
Approx. 50% of the base frequency
Summary of Contents for FRENIC-MEGA
Page 36: ...2 6 Unit inch mm Refer to Section 2 3 3 9...
Page 356: ...MEMO...
