Toshiba TOSVERT VF-A7 Instruction Manual page 132

[Setting procedure]
Key operated LED display
MON


ENT
ENT
ENT 
Cautions in setting the auto-tuning parameter
Connect the motor before auto-tuning. Do not proceed to auto-tuning before the motor comes
to a full stop. If the auto-tuning function is activated immediately after stopping motor, it
sometimes fails to work normally because of a residual voltage.
A voltage is applied to the motor during auto-tuning, though it is too low to rotate the motor.
Usually, auto-tuning terminates in some dozens of seconds. If an error occurs, however, the
inverter trips (display ) and no motor constant is set.
The auto-tuning is incapable of tuning special motors, such as high-speed or a high slip
motors. When using such a motor, set motor constants manually as described in Section 3.
If auto-tuning causes the inverter to trip easily because of an over-voltage  or an over-
current , change the setting of the load inertia moment parameter . Refer to the
Step 2 for the adjustment of .
When the inverter is used for a crane/hoist, equip it with a protective device (mechanical
brake, etc.) with a sufficient capacity. Failure to do so might cause the crane/hoist to loose
speed and fall because the motor cannot produce sufficiently large torque during auto-tuning.
When operating a motor in vector control mode, set the carrier frequency at 2.2 kHz
or over. Failure to do so might cause the vector control to be unstable.
If auto-tuning cannot be made successfully or an auto-tuning error () occurs, set
the motor constants manually as described in Selection 3 below.
Notes about vector control: Refer to 5.10 9)
[Selection 3: Individually setting the vector control and the manual tuning]
If a tuning error  occurs during auto tuning or the sensorless vector control charact
eristic needs to be improved, you may set motor constants individually.
Title Function
 Number of motor poles
 Rated capacity of motor
 Motor type
(*1) Toshiba standard motor 1: World-energy series of totally-enclosed fan-cooled motors
Toshiba standard motor 2: World-energy 21 series of totally-enclosed fan-cooled motors
The running frequency is displayed. (Make this setting when
the motor is out of operation.) (If the monitor display momde

setting parameter
Press the Monitor key to call up the first basic parameter

(automatic acceleration/deceleration).
Select the parameter (extended parameters of 
to ) by pressing
Press the Enter key to activate the parameter .
Press the Enter key to display the parameter setting.

Change the parameter setting to  (Automatic tuning

execution) by pressing
Press the Enter key to save the change. Then,  and
the set value are displayed alternately.
,,,,,,,
 [Model dependent] [kW]
: Toshiba standard motor #1 (*1)
: Toshiba VF motor
: Toshiba V3 motor
: Toshiba standard motor #2 (*1)
: Other motors
F-36
Operation
is set at [Running frequency])

or key.
key.
Adjustment range
Default setting

Model dependent
