1st Motor Parameter %R1 (P07)/2nd Motor
Motor Constant %R1 (A21)
: Set the wiring resistance value on the primary side of
the motor for one phase in a Y-connection as a percent-
age Ohmic drop. Calculate by the following formula.
%R1=
× 100 (%)
R1 + Cable R1
V/(√3 × I)
R1: Motor primary resistance (Ω)
Cable R1: Resistance value c of output side cable
V: Motor rated voltage (V)
I: Motor rated current (A)
1st Motor Parameter %X (P08)/2nd Motor Mo-
tor Constant %X (A22)
: Set the leakage inductance for one phase in a Y
-con-
nection motor as a percentage reactance drop. Calcu-
late by the following formula.
%X =
× 100 (%)
X1 + X2 × XM/(X2+XM) + Cable X
V/(√3 × I)
X1: Motor primary leakage reactance (Ω)
X2: Motor secondary leakage reactance (primary con-
verted value)
XM: Motor excitation reactance (Ω)
Cable X: Reactance of output side cable (Ω)
V
: Motor rated voltage (V)
I: Motor rated current (A)
1st Rated Slip Frequency (P12)/2nd Rated
Slip Frequency (A26)
: Set the rated slip frequency in a Y-connection motor as
Hz.
• After setting each motor parameter, adjust the parameters according to 6-3-3 Adjustments for Sen-
sorless Vector Control on page 6-18.
•
To increase response, increase the setting of Speed Control 1 P Proportional Gain (d03)/Speed
Control 2 P Proportional Gain (A45), and decrease the setting if motor hunting occurs.
Parameter No. Function name Data Default data Unit
P06/A20
1st Motor Armature Re-
sistance/2nd Motor Ar-
mature Resistance
0.00 to 500.0 A
10.55 A
P07/A21
1st Motor Parameter
%R1/2nd Motor Motor
Constant %R1
0.00 to 50.00 %
3.17 %
P08/A22
1st Motor Parameter
%X/2nd Motor Motor
Constant %X
0.00 to 50.00 %
11.47 %
P12/A26
1st Rated Slip Frequen-
cy/2nd Rated Slip Fre-
quency
0.00 to 15.00 Hz
1.00 Hz
6-3-3
Adjustments for Sensorless Vector Control
• To use sensorless vector control, perform offline auto-tuning.
If of
fline auto-tuning cannot be performed, set the parameters of the motor in use according to
6-3-2 Motor Parameter Settings on page
6-17.
6 Vector Control and Applied Functions
6-18
M1 Series Standard Type User's Manual (I669)
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