Precautions Before Auto-Tuning - YASKAWA GA800 Programming Manual

Parameters Automatically Set
C5-37 [Motor 2 Inertia]
C5-18 [Load Inertia Ratio]
C5-38 [Motor 2 Load Inertia
Ratio]
L2-06 [Kinetic Energy Backup
Decel Time]
L3-24 [Motor Accel Time @
Rated Torque]
L3-25 [Load Inertia Ratio]
n5-02 [Motor Inertia Acceleration
Time]
n5-03 [Feed Forward Control
Gain]
*1 The drive automatically sets C1-08 [Deceleration Time 4] only when C1-11 [Accel/Decel Time Switchover Freq] ≠ 0.
*2 When L2-29 = 0 [Kinetic Energy Backup Method = Single Drive KEB Ride-Thru 1], the drive will automatically adjust C1-09 [Fast Stop
Time] and will not adjust L2-06 [Kinetic Energy Backup Decel Time]. If the Fast Stop time must not change, do not do KEB Tuning.
*3 When L2-29 = 1, 2, or 3 [Kinetic Energy Backup Method = Single Drive KEB Ride-Thru 2, System KEB Ride-Thru 1, or System KEB
Ride-Thru 2], the drive will automatically adjust L2-06 [Kinetic Energy Backup Decel Time].
◆

Precautions before Auto-Tuning

Examine the topics in this section before you start Auto-Tuning.
■
Prepare for Basic Auto-Tuning
• You must input data from the motor nameplate or motor test report to do Auto-Tuning. Make sure that this data is
available before Auto-Tuning the drive.
• For best performance, make sure that the drive input supply voltage is equal to or more than the motor rated
voltage.
Note:
Better performance is possible when you use a motor with a rated voltage that is less than the input supply voltage (by 20 V for 200 V class
models or by 40 V for 400 V class models). This is very important when operating the motor at more than 90% of base speed, where high
torque precision is necessary. If the input power supply is equal to the motor rated voltage, the drive output voltage will not be sufficient, and
performance will decrease.
• Push on the keypad to cancel Auto-Tuning.
• If a Safe Disable input signal is input to the drive during Auto-Tuning, Auto-Tuning measurements will not
complete successfully. If this occurs, cancel the Auto-Tuning, then do it again.
•
Table 3.14 shows the status of input/output terminals during Auto-Tuning.
Auto-Tuning Type
Rotational
Induction Motor Auto-Tuning
Stationary
Rotational
PM Motor Auto-Tuning
Stationary
YASKAWA TOEPYAIGA8002B GA800 Drive Programming
Inertia Tuning ASR Tuning
x
x
x
-
x
x
x
x
Table 3.14 Status of Input/Output Terminals during Auto-Tuning
Mode
Rotational Auto-Tuning
Stationary Auto-Tuning 1
Line-to-Line Resistance
Z-Pulse Offset (Pole Position)
PM Rotational Auto-Tuning
PM Motor Parameter Settings
PM Stationary Auto-Tuning
PM Stationary Auto-Tuning for
Stator Resistance
Deceleration Rate Tuning
x -
x -
x -
- -
x -
x -
x -
x -
Multifunctional input
Disabled
Disabled
Disabled
Disabled
Disabled
Disabled
Disabled
Disabled
3.5 Auto-Tuning
KEB Tuning
-
-
-
*3
x
-
x
-
-
*1
Multifunctional output
Functions the same as during usual
operation.
Keeps the status at the start of
Auto-Tuning.
Keeps the status at the start of
Auto-Tuning.
Keeps the status at the start of
Auto-Tuning.
Functions the same as during usual
operation.
Disabled
Keeps the status at the start of
Auto-Tuning.
Keeps the status at the start of
Auto-Tuning.
595
3