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E-4
2) The vector control (Increasing the starting torque and operating with a higher accuracy)
Set the automatic V/f mode setting at (vector control (speed) and auto-tuning).
By setting the automatic V/f mode setting at (vector control (speed control) and auto-
tuning), the motor reach its full potential and produce large torque even at low speeds. Also, you
can minimize motor speed fluctuations caused by load fluctuations for more accurate operation.
This mode of control is best suited to conveyor and crane/hoist application as operated in speed
control mode.
[Setting procedure]
Key operated LED display Operation
The running frequency is displayed. (Make this setting when the
motor is out of operation.)(If the monitor display selection
parameter is set at [Running frequency])
Press the [MON] key to call up the first basic
parameter (automatic acceleration/deceleration).
Switch to the parameter (Automatic V/f mode setting)
by pressing the key.
Press the Enter key to display the parameter setting (set
value).
Change the parameter setting to 2 (sensor-less vector
control and auto-tuning) by pressing the key.
Press the Enter key to save the change. Then, and
the set value are displayed alternately.
Note 1) The same characteristic can be obtained by setting the motor control mode selection
parameter
at (vector control) and the auto-tuning parameter at . Refer
to 5.10 for details.
2) Setting
at causes to be set at automatically.
To operate the inverter in energy-saving mode
Set the automatic V/f mode setting at (automatic energy-saving + auto tuning).
When the automatic V/f mode setting is set at , the inverter passes a current
commensurate with the load to save energy.
[Setting procedure]
Key operated LED display Operation
The running frequency is displayed. (Make this setting when the
motor is out of operation.)(If the monitor display mode setting
parameter is set at [Running frequency])
Press the [MON] key to call up the first basic parameter
(Automatic acceleration/deceleration).
Switch to the parameter (Automatic V/f mode setting)
by pressing the key.
Press the Enter key to display the parameter setting (set
value). (The value is always .)
Change the parameter setting to (automatic energy-saving
and auto-tuning) by pressing the key.
Press the Enter key to save the change. Then, and the
parameter set value are displayed alternately.
ENT
ENT
If you fail to make the setting for vector control ...,
First, read the notes on vector control in 9) of section 5.10)
1) If the expected torque cannot be obtained => Selection 3 in 6.20
2) If the auto-tuning error message is displayed => Selection 3 in 6.20
MON
ENT
ENT
MON