Toshiba VF-A7 Setting motor constants, Selection 1 Setting by the automatic V/f mode

6.20 Setting motor constants

 ：Auto-tuning

 ：Slip frequency gain

 ：Motor constant #1

 ：Motor constant #2

 ：Motor constant #3

 ：Motor constant #4

 ：Motor constant #5

 ：Number of motor poles

 ：Rated capacity of motor

 ：Motor type

 ：Auto-tuning prohibition

Warning

Mandatory

・Do not set the motor parameter #3(Exciting inductance: ) less than or equal to a half of default value. If the motor parameter #3(Exciting inductance: ) was set at a extremely small value, stall prevention function would work and output frequency would rise.

When using the vector control or the automatic torque boost, it is necessary to set (tuning) motor constants. You can set motor constants by any of the following three methods.

After setting by one of three methods, drive the motor.

1)Using the automatic V/f mode setting () to make the setting of the motor control mode selection () and the auto-tuning parameter () at a time

2)Setting the motor control mode () and the auto-tuning parameter () individually

3)Setting the motor control mode () and setting motor constants manually

<Note> If tuning error () occurs when the power is turned on, set the motor type  at  (others).

[Selection 1: Setting by the automatic V/f mode]

This is the simplest way of setting. With the automatic control parameter, you can set the automatic torque boost, the sensorless vector control and the auto-tuning parameter at a time.

Automatic V/f mode ＝ (Automatic torque boost + auto-tuning)

Automatic V/f mode ＝ (Sensorless vector control + auto-tuning)

Automatic V/f mode ＝ (Automatic energy-saving + auto-tuning)

Refer to 5.2 for details of this setting.

[Selection 2: Individually setting the vector control and the auto-tuning]

This is the method for individually setting the vector control and the auto-tuning. You need to set the control mode with the motor control mode selection , before auto-tuning setting.

Set the auto-tuning ＝ (Automatic tuning execution)

[Parameter setting]

Title	Function	Adjustment range	Default setting
		: Without auto-tuning (internal table)
	Auto-tuning	: Motor constant initialization ( after execution)	
		: Automatic tuning execution ( after execution)

Here are the setting conditions for each type of motor.

	Applicable motor		Auto-tuning
Type	motor poles	Capacity
	4P	Same capacity as the inverter	Not required
Toshiba		Different capacity from the inverter
standard motor	others	Same capacity as the inverter	Required
		Different capacity from the inverter
Other motors

F-35