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E-4
5
Key operated LED display Operation
Press the key to change the parameter to 1 (sensorless vector
control + auto-tuning).
Press the ENTER key to save the changed parameter. and
the parameter are alternately displayed.
Note 1: Setting V/F control selection to (sensorless vector control) provides the same characteristics as
when (auto-tuning) is set to 2. ⇒ See 5.12
Note 2: Setting to automatically programs to .
If vector control cannot be programmed....
First read the precautions about vector control in 5.12, 6.
1) If the desired torque cannot be obtained, see 6.13, 3.
2) If auto-tuning error " " appears, see 6.13, 3.
■
(automatic torque boost) and (V/F control mode selection)
Automatic torque boost is the parameter for setting V/F control mode selection ( ) and auto-
tuning ( ) together. That is why all parameters related to change automatically when
is changed.
Automatically programmed parameters
Displays after resetting -
Check the programmed value of .
(If is not changed, it becomes 0
(V/F constant) )
-
Sensorless vector control
+ auto-tuning
Sensorless vector control
Executed
( after execution)
2) Increasing torque manually (V/F constant control)
The VF-S9 inverter is set to this control mode by factory default.
This is the setting of constant torque characteristics that are suited for such things as conveyors. It can also
be used to manually increase starting torque.
If V/F constant control is programmed after changing
,
Set V/F control mode selection to 0 (V/F constant)
⇒ See 5.12.
Note 1: If you want to increase torque further, raise the setting value of manual torque boost .
How to set manual torque boost parameter ⇒ See 5.13.
Note 2: V/F control selection to 1 (variable torque) is an effective setting for the load on such
equipment as fans and pumps. ⇒ See 5.12.