Mitsubishi Electric fr-e700 series, Instruction Manual

Page: 252 / 608

Selection and protection of a motor Parameter
6 - 98
To enter the Pr. 90 and Pr. 94 motor constants in [mH]
햲
Set Pr. 71 according to the motor used:
햲
For other settings of Pr. 71, refer to section 6.8.2.
햳
In the parameter setting mode, read the following parameters and set desired values.
Calculate the Pr. 94 value from the following formula.
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
Motor
Pr. 71
햲
Mitsubishi standard motor,
Mitsubishi high efficiency motor
SF-JR 0
SF-HR 40
Mitsubishi constant-torque motor
SF-JRCA 4P 1
SF-HRCA 50
Tab. 6-21: Motor selection
Fig. 6-40:
Motor equivalent circuit diagram
I001556E
Pr. 94 1
M
2
L1 L2
------------------- –
100 [%] =
R1 l1 l2
M R2/S
U