3.16 T: Motor Tuning
254 YASKAWA TOEPYAIGA8001B GA800 Drive Maintenance & Troubleshooting
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.
0 : mV/(rev/min)
1 : mV/(rad/sec)
0
(0, 1)
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
(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%)
T2-16
(0738)
Encoder Pulse Count (PPR)
Sets the number of PG (pulse generator, encoder) pulses.
1024 ppr
(1 - 15000 ppr)
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°)
◆ T3: ASR and Inertia Tuning
No.
(Hex.)
Name Description
Default
(Range)
T3-00
(1198)
Control Loop Tuning
Selection
Sets the type of Control Auto-Tuning.
0 : Inertia Tuning
1 : ASR (Speed Regulator)
2 : Deceleration Rate Tuning
3 : KEB Tuning
Note:
Settings 0 and 1 are available only when A1-02 = 3, 7 [Control Method Selection = CLV, CLV/
PM].
0
(0 - 3)
T3-01
(0760)
Test Signal Frequency
Sets the frequency of the test signal applied to the motor during Inertia Tuning. Usually it is not
necessary to change this setting.
3.0 Hz
(0.1 - 20.0 Hz)
T3-02
(0761)
Test Signal Amplitude
Sets the amplitude of the test signal applied to the motor during Inertia Tuning. Usually it is not
necessary to change this setting.
0.5 rad
(0.1 - 10.0 rad)
T3-03
(0762)
Motor Inertia
Sets the inertia of the motor. This value uses the test signal response to calculate the load inertia.
Note:
The display units for the default setting and setting range are different for different models:
• 0.0001 kgm
2
units (setting range: 0.0001 kgm
2
to 6.0000 kgm
2
): 2004 to 2021, 4002 to 4012
• 0.001 kgm
2
units (setting range: 0.001 kgm
2
to 60.000 kgm
2
): 2030 to 2211, 4018 to 4103,
T103
• 0.01 kgm
2
units (setting range: 0.01 kgm
2
to 600.00 kgm
2
): 2257 to 2415, 4140 to 4720, T140
to T720
Determined by o2-04, C6-
01, and E5-01
(0.0001 - 600.00 kgm
2
)
T3-04
(0763)
System Response Frequency
This parameter uses the load inertia value from the Inertia Tuning process to automatically calculate
and set C5-01 [ASR Proportional Gain 1].
10.0 Hz
(0.1 - 50.0 Hz)
◆ T4: EZ Tuning
No.
(Hex.)
Name Description
Default
(Range)
T4-01
(3130)
EZ Tuning Mode Selection
Sets the type of Auto-Tuning for EZOLV control.
0 : Motor Parameter Setting
1 : Line-to-Line Resistance
0
(0, 1)
T4-02
(3131)
Motor Type Selection
Sets the type of motor.
0 : Induction (IM)
1 : Permanent Magnet (PM)
2 : Synchronous Reluctance (SynRM)
0
(0, 1, 2)
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