Mitsubishi Electric 800 Series Instruction Manual page 444

NOTE
• Setting "9999" disables the tuning data. The inverter internal constant is used.
• To change a motor induced voltage constant of PM motors, the setting in Pr.706 Induced voltage constant (phi f) or Pr.738
Second motor induced voltage constant (phi f) must be changed. If the constant after the change exceeds the setting
range of Pr.706 or Pr.738 (0 to 5000 mV (rad/s)), set Pr.1412 Motor induced voltage constant (phi f) exponent or Pr.1413
Second motor induced voltage constant (phi f) exponent. Set a value in the exponent n in the formula, Pr.706 (Pr.738) ×
10n [mV (rad/s)], to set the induced voltage constant (phi f).
• When Pr.71 (Pr.450) = "8093, 8094, 9093, or 9094", or Pr.1412 (Pr.1413) = "9999", the motor induced voltage constant is as
set in Pr.706 (Pr.738). (No exponent setting)
Changing the motor constants (If setting a motor constants in the
internal data of the inverter)
• Set Pr.71 as follows.
Motor
IPM motor 8093 (8094)
SPM motor 9093 (9094)
• Set given values as the motor constant parameters. The displayed increments of the read motor constants can be changed
with Pr.684 Tuning data unit switchover.
First Second
motor motor
Pr. Pr.
90 458 Motor constant (R1)
Motor constant (L1)/d-
92 460
axis inductance (Ld)
Motor constant (L2)/q-
93 461
axis inductance (Lq)
Induced voltage
706 738
constant (phi f)
Torque current/Rated
859 860
PM motor current
Motor induced voltage
1412 1413 constant (phi f)
exponent

For the FR-A860-01080 or lower.

For the FR-A860-01440 or higher.
NOTE
• 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:
• Setting "9999" disables the tuning data. The inverter internal constant is used.
• To change a motor induced voltage constant of PM motors, the setting in Pr.706 Induced voltage constant (phi f) or Pr.738
Second motor induced voltage constant (phi f) must be changed. If the constant after the change exceeds the setting
range of Pr.706 or Pr.738 (0 to 5000 mV (rad/s)), set Pr.1412 Motor induced voltage constant (phi f) exponent or Pr.1413
Second motor induced voltage constant (phi f) exponent. Set a value in the exponent n in the formula, Pr.706 (Pr.738) ×
10n [mV (rad/s)], to set the induced voltage constant (phi f).
• When Pr.71 (Pr.450) = "8093, 8094, 9093, or 9094", or Pr.1412 (Pr.1413) = "9999", the motor induced voltage constant is as
set in Pr.706 (Pr.738). (No exponent setting)
Parameters referred to ???????
Pr.9 Electronic thermal O/L relay
Pr.71 Applied motor page 423
Pr.178 to Pr.189 (Input terminal function selection)
Pr.800 Control method selection
Pr.71 setting
Pr.684 = 0 (initial value)
Name
Setting
range
0 to ***, 9999
To slightly increase Pr.90 value (5%)
If Pr.90 = "2516" is displayed
The value can be calculated with "2516  1.05 = 2641.8". Therefore set Pr.90 = "2642".
(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)
page 317
page 415
page 137
(C) Motor constant parameters
Pr.684 = 1
Setting
Setting range
increments
0 to 50 Ω, 9999

0 to 400 mΩ, 9999
0 to 500 mH, 9999
0 to 50 mH, 9999
0 to 500 mH, 9999
0 to 50 mH, 9999
1
0 to 5000 mV/s/rad,
9999
0 to 500 A, 9999
0 to 3600 A, 9999
0 to 2, 9999
Initial
Setting
value
increments
0.001 Ω

0.01 mΩ
 
0.01 mH
 
0.001 mH
 
0.01 mH
 
0.001 mH
 
9999
0.1 mV/(rad/s)
0.01 A
 
0.1 A
 
1
PARAMETERS
5
GROUP
C
443