E6581158
E-6
5
If vector control cannot be programmed....
First read the precautions about vector control in 5.11, 8.
1) If the desired torque cannot be obtained ⇒ see 6.17,2
2) If auto-tuning error “GVP” appears ⇒ see 6.17,3
Q CW(automatic torque boost) and RV (V/F control mode selection 1)
Automatic torque boost is the parameter for setting V/F control mode selection 1 (RV) and auto-
tuning (H) together. That is why all parameters related to change automatically when CW is
changed.
Automatically programmed parameters
CW RV H
Displays after resetting -
Check the programmed value of RV. (If
CW is not changed, it becomes 0 (V/F
constant)
-
Automatic torque boost +
auto-tuning
Automatic torque boost
Executed
( after execution)
Vector control + auto-tuning Sensorless vector control
Executed
( after execution)
Energy saving + auto-tuning
Automatic energy saving
Executed
( after execution)
4) Increasing torque manually (V/F constant control)
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 CW,
Set V/F control mode selection 1 RV = (V/F constant).
⇒ see 5.11
Note 1: To further increase torque, increase the torque boost amount 1XD.
How to set the torque boost amount 1XD ⇒ see 5.12
Note 2: V/F control selection 1 RV= 1 (variable torque) is an effective setting for the load on such
equipment as fans and pumps. ⇒ see 5.11
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