Instruction manual

PARAMETERS
105
Note: 1. Pr. 90 to Pr. 94 values may only be read when the Pr. 80 and Pr. 81 settings are other than
"9999" (advanced magnetic flux vector control selected).
2. Set "9999" in Pr. 90 to Pr. 94 to use the standard motor constants (including those for the
constant-torque motor).
3. Set "3" (standard motor) and "13" (constant-torque motor) in Pr. 71 to use the constants
measured in the offline auto tuning. Set "4 and 14 in Pr. 71 and change the motor constants to
change the values measured in the offline auto tuning.
4. As the motor constants measured in the offline auto tuning have been converted into internal data
(****), refer to the following setting example when making setting:
Setting example: To slightly increase Pr. 90 value
When Pr. 90 is displayed "2516", set 2642, i.e. 2516×1.05=2641.8, in Pr. 90.
(The value displayed has been converted into a value for internal use. Hence, simple addition of a
given value to the displayed value has no significance.)
 To set the motor constants without using the offline auto tuning data
The Pr. 92 and Pr. 93 motor constants may either be entered in [
Ω
] or in [mH]. Before starting
operation, confirm which motor constant unit is used.
z To enter the Pr. 92 and Pr. 93 motor constants in [Ω]
<Operating procedure>
1. Set "801" in Pr. 77. Only when the Pr. 80 and Pr. 81 settings are other than "9999", the parameter
values of the motor constants (Pr. 90 to Pr. 94) can be displayed. Though the parameter values
of other than the motor constants (Pr. 90 to Pr. 94) can also be displayed, they are parameters
for manufacturer setting and should be handled carefully without misuse.
2. Set any of the following values in Pr. 71:
Star Connection
Motor
Delta Connection Motor
Standard motor 5 6
Setting
Constant-torque motor 15 16
3. In the parameter setting mode, read the following parameters and set desired values:
Parameter
Number
Name Setting Range
Setting
Increments
Factory
Setting
90
Motor constant R1
0 to 10Ω, 9999 0.001Ω 9999
91
Motor constant R2
0 to 10Ω, 9999 0.001Ω 9999
92
Motor constant X1
0 to 10Ω, 9999 0.001Ω 9999
93
Motor constant X2
0 to 10Ω, 9999 0.001Ω 9999
94
Motor constant X
0 to 500Ω, 9999 0.01Ω 9999
4. Refer to the following table and set Pr. 84:
Parameter
Number
Name Setting Range
Setting
Increments
Factory
Setting
84 Rated motor frequency 50 to 120Hz 0.01Hz 60Hz
5. Return the Pr. 77 setting to the original value.
Note: 1. Pr. 90 to Pr. 94 values may only be read when the Pr. 80 and Pr. 81 settings are other
than "9999" (advanced magnetic flux vector control selected).
2. Set "9999" in Pr. 90 to Pr. 94 to use the standard motor constants (including those for the
constant-torque motor).
3. If "star connection" is mistaken for "delta connection" or vice versa during setting of Pr.
71, advanced magnetic flux vector control cannot be exercised normally.
4