Parameter setting procedure for dancer feedback speed control
52
• Note: Offline auto tuning time (with the initial setting)
• When offline auto tuning ends, press the STOP/RESET key on the operation panel during PU operation. For External
operation, turn OFF the start signal (STF or STR signal).
This operation resets the offline auto tuning, and the PU's monitor display returns to the normal indication.
(Without this operation, next operation cannot be started.)
NOTE
• The motor constants measured once in the offline auto tuning are stored as parameters and their data are held until the
offline auto tuning is performed again. However, performing all parameter clear resets the tuning data.
• Changing
Pr.71 (Pr.450)
after tuning completion will change the motor constant. For example, if
Pr.71
= "3" is set after tuning
is performed with
Pr.71
="0", the tuning data becomes invalid. Set
Pr.71
= "0" again for using the tuning data.
• If offline auto tuning has ended in error (see the table below), motor constants are not set. Perform an inverter reset and
restart tuning.
• When offline auto tuning with motor rotation is performed under vector control, the protective function (E.EPS) may be
activated.
∗1
The data code is used for checking the fault detail via communication or for setting
Pr.997 Fault initiation
. (Refer to the Instruction Manual
(Detailed) of the FR-A800 inverter.)
• When tuning is ended forcibly by pressing the STOP/RESET key or turning OFF the start signal (STF or STR signal) during
tuning, offline auto tuning does not end properly. (The motor constants have not been set.)
Perform an inverter reset and restart tuning.
Offline auto tuning setting
Time
No motor rotation (
Pr.96
= "1")
Approx. 25 to 120 s
(The time depends on the inverter capacity and motor type.)
With motor rotation (
Pr.96
= "101")
Approx. 40 s
(The following offline auto tuning time is set according to the acceleration/
deceleration time setting. Offline auto tuning time = Acceleration time + Deceleration
time + Approx. 30 s)
Error display
Error cause
Countermeasures
8
Forced end
Set
Pr.96
= "1 or 101" and try again.
9
Inverter protective function operation
Make the setting again.
91
The current limit (stall prevention) function is activated.
Set the acceleration/deceleration time longer.
Set
Pr.156
Stall prevention operation selection
=
"1".
92
The converter output voltage fell to 75% of the rated
voltage.
Check for the power supply voltage fluctuation.
Check the
Pr.84 Rated motor frequency
setting.
93
Calculation error
The motor is not connected.
Check the
Pr.83
and
Pr.84
settings.
Check the motor wiring and make the setting again.
94
Rotation tuning frequency setting error
(The frequency command for the tuning was given to
exceed the maximum frequency setting, or to be in the
frequency jump range.)
Check the
Pr.1 Maximum frequency
and
Pr.31 to
Pr.36 Frequency jump
settings.
Operation panel
indication
E.EPS
FR-LU08
indication
Fault 15
Name
Encoder pulse number setting error (Data code: 255 (HFF))
Description
When the rotation speed deviates from the command value range while auto tuning with motor rotation is
performed under vector control, the inverter trips.
Check point
• Check the encoder setting (
Pr.369, Pr.851,
differential line driver / complementary) and wiring.
• Load inertia is too high, or the acceleration time is too short.
• Check that the load is not too large.
Corrective action
• Check the encoder setting and wiring.
• Set the acceleration time longer.
• Reduce the load.
Vector
Vector
Vector
Summary of Contents for A800 Plus Series
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