Mitsubishi Electric FR-F820-00046 Instruction Manual page 382

• According to the Pr.71 (Pr.450) setting, the range of the motor constant parameter setting values and units can be
changed. The changed settings are stored in the EEPROM as the motor constant parameters.
 Changing the motor constants (when setting motor constants in units of
Ω, mH, or A)
• Set Pr.71 as follows.
IPM motor
SPM motor
• Set desired values as the motor constant parameters.
First motor Second
Pr. motor Pr.
90 458 Motor constant (R1)
92 460 Motor constant (L1)/d-axis inductance (Ld)
93 461 Motor constant (L2)/q-axis inductance (Lq)
706 738 Induced voltage constant (phi f)
859 860 Torque current/Rated PM motor current
Motor induced voltage constant (phi f)
1412 1413
exponent
*1 For the FR-F820-02330(55K) or lower, and FR-F840-01160(55K) or lower.
*2 For the FR-F820-03160(75K) or higher, and FR-F840-01800(75K) or higher.
NOTE
• If "9999" is set, tuning data will be invalid. The MM-EFS or MM-THE4 constant is used for the IPM motor MM-EFS or MM-
THE4, and the inverter internal constant is used for a PM motor other than MM-EFS or MM-THE4.
• 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) ×
n
10 [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 (when setting a motor constants in the
internal data of the inverter)
• Set Pr.71 as follows.
IPM motor
SPM motor
Motor
MM-EFS (1500 r/min specification) / MM-THE4
MM-EFS (3000 r/min specification)
Other than MM-EFS/MM-THE4
Name
Motor
MM-EFS (1500 r/min specification) / MM-THE4
MM-EFS (3000 r/min specification)
Other than MM-EFS/MM-THE4
Pr.71 setting
210
240
8090
9090
Setting range
increments
*1
0 to 50 Ω, 9999 0.001 Ω
*2
0 to 400 mΩ, 9999 0.01 mΩ
*1
0 to 500 mH, 9999 0.01 mH
*2
0 to 50 mH, 9999 0.001 mH
*1
0 to 500 mH, 9999 0.01 mH
*2
0 to 50 mH, 9999 0.001 mH
0 to 5000 mV (rad/s), 9999 0.1 mV (rad/s)
*1
0 to 500 A, 9999 0.01 A
*2
0 to 3600 A, 9999 0.1 A
0 to 2, 9999 1
Pr.71 setting
213 (214)
243 (244)
8093 (8094)
9093 (9094)
5.10 (C) Motor constant parameters
Setting
Initial value
*1
*2
*1
*2
*1
9999
*2
*1
*2
5. PARAMETERS
1
2
3
4
5
6
7
8
9
10
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