Mitsubishi Electric FR-A700 Instruction Manual page 413

Parameter
To enter the Pr. 90 and Pr. 94 motor constants in [mH]
Set Pr. 71 according to the motor used:
Motor
Mitsubishi standard motor,
Mitsubishi high efficiency motor
Mitsubishi constant-torque motor
Vector control dedicated motor
Tab. 6-58: Motor selection
For other settings of Pr. 71, refer to section 6.12.2.
In the parameter setting mode, read the following parameters and set desired values.
Calculate the Pr. 94 value from the following formula.
Pr. 94
U
R1: Primary resistance
R2: Secondary resistance
l1: Primary leakage inductance
l2: Secondary leakage inductance
M: Excitation inductance
S: Slip
L1 = l1 + M: Primary inductance
L2 = l2 + M: Secondary inductance
FR-A700 EC
2
⎛ ⎞
M
×
= 1 – -------------------- - 100 [%]
⎝ ⎠
×
L1 L2
R1 l1 l2
M R2/S
Selection and protection of a motor
SF-JR
SF-JR 4P-1,5 kW oder kleiner
SF-HR
SF-JRCA 4P,
SF-TH (constant-torque)
SF-HRCA 4P
SF-V5RU
Fig. 6-94:
Motor equivalent circuit diagram
Pr. 71
0
20
40
1
50
30
I001556E
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