Parameter Details
12
12.12 T: Auto-Tuning
YASKAWA SIEPC71061705H GA700 Series Technical Manual 967
■ T2-11: PM Motor d-Axis Inductance
No.
(Hex.)
Name Description
Default
(Range)
T2-11
(0735)
PM Motor d-Axis
Inductance
Sets the d-axis inductance of the motor on a per phase basis.
Determined by T2-02
(0.00 - 600.00 mH)
■ T2-12: PM Motor q-Axis Inductance
No.
(Hex.)
Name Description
Default
(Range)
T2-12
(0736)
PM Motor q-Axis
Inductance
Sets the q-Axis inductance of the motor on a per phase basis.
Determined by T2-02
(0.00 - 600.00 mH)
■ T2-13: Back-EMF Units Selection
No.
(Hex.)
Name Description
Default
(Range)
T2-13
(0755)
Back-EMF Units Selection
Sets the units that the drive uses to set the induced voltage constant.
1
(0, 1)
0 : mV/(rev/min)
1 : mV/(rad/s)
Note:
• When T2-13 = 0, the drive will use E5-24 [PM Back-EMF L-L Vrms (mV/rpm)] and will automatically set E5-09 [PM Back-EMF
Vpeak (mV/(rad/s))] = 0.0.
• When T2-13 = 1, the drive will use E5-09 and will automatically set E5-24 = 0.0.
■ T2-14: Back-EMF Voltage Constant (Ke)
No.
(Hex.)
Name Description
Default
(Range)
T2-14
(0737)
Back-EMF Voltage
Constant (Ke)
Sets the motor induced voltage constant (Ke).
Determined by T2-13
(0.0 - 2000.0)
■ T2-15: Pull-In Current Level
No.
(Hex.)
Name Description
Default
(Range)
T2-15
(0756)
Pull-In Current Level
Sets the level of the pull-in current as a percentage of E5-03 [PM Motor Rated Current (FLA)].
Usually it is not necessary to change this setting.
30%
(0 - 120%)
If the load inertia is high, increase the setting value.
■ T2-16: Encoder Pulse Count (PPR)
No.
(Hex.)
Name Description
Default
(Range)
T2-16
(0738)
Encoder Pulse Count (PPR)
Sets the number of PG (pulse generator, encoder) pulses.
1024 ppr
(1 - 15000 ppr)
Set the actual number of pulses for one full motor rotation.
■ T2-17: Encoder Z-Pulse Offset
No.
(Hex.)
Name Description
Default
(Range)
T2-17
(0757)
Encoder Z-Pulse Offset
Sets the encoder Z-pulse offset (Δθ) (pulse generator, encoder) that is listed on the motor
nameplate.
0.0 °
(-180.0 - +180.0°)
If you do not know the quantity of encoder (pulse generator, encoder) Z-pulse offset, or if you replaced the
encoder, do Z Pulse Offset Tuning and correct for the offset (Δθ) from the Z phase.
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