P04
Motor 1 (Auto-tuning)
The inverter automatically detects the motor parameters and saves them in its internal memory.
Basically, it is not necessary to perform tuning when using a Fuji standard motor with a standard
connection with the inverter.
In any of the following cases, perform auto-tuning since the motor parameters are different
from those of Fuji standard motors so as not to obtain the best performance under each of
these controls-- auto torque boost, torque calculation monitoring, auto energy saving
operation, automatic deceleration (anti-regenerative control), slip compensation, and torque
vector control.
• The motor to be driven is made by other manufacturer or is a non-standard motor.
• Cabling between the motor and the inverter is long.
• A reactor is inserted between the motor and the inverter.
For details of auto-tuning, refer to Chapter 4, Section 4.1.3 "Preparation before a test
run--Configuring function code data."
P06,P07
P08,P12
Motor 1 (No-load current, %R1, %X and Motor 1, Rated slip frequency)
P06 through P08 and P12 specify no-load current, %R1, %X, and rated slip frequency,
respectively. Obtain the appropriate values from the test report of the motor or by calling the
manufacturer of the motor.
Performing auto-tuning automatically sets these parameters.
No-load current (P06): Enter the value obtained from the motor manufacturer.
%R1 (P07): Enter the value calculated by the following expression.
R1+Cable R1
%R1=
V / ( 3× I
)
where,
R1: Primary resistance of the motor (Ω)
Cable R1: Resistance of the output cable (Ω)
V: Rated voltage of the motor (V)
I: Rated current of the motor (A)
%X (P08): Enter the value calculated by the following expression
X1+X2+XM / (X2+XM)+Cable X
%R1= x 100 (%)
V / ( 3× I
)
where
X1: Primary leakage reactance of the motor (Ω)
X2: Secondary leakage reactance of the motor (converted to primary) (Ω)
XM: Exciting reactance of the motor (Ω)
Cable X: Reactance of the output cable (Ω)
V: Rated voltage of the motor (V)
I: Rated current of the motor (A)
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