YASKAWA GA700 - Precautions before Auto-Tuning

Startup Procedure and Test Run
3
3.8 Auto-Tuning
YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual 199
Parameters
Automatically Set
Inertia Tuning ASR Tuning
Deceleration Rate
Tuning
KEB Tuning
L3-25 [Load Inertia
Ratio]
x x - x
n5-02 [Motor Inertia
Acceleration Time]
x x - -
n5-03 [Feed Forward
Control Gain]
x x - -
*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 base voltage that is less than the input supply voltage (20 V for 200 V class
models and 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 3.16 gives information about the terminal operations of digital inputs and outputs during Auto-Tuning.
Table 3.16 Status of Input/Output Terminals during Auto-Tuning
Auto-Tuning Type Mode Digital Input Digital Output
*1
Induction Motor Auto-
Tuning
Rotational Rotational Auto-Tuning Disabled
Functions the same as
during usual operation.
Stationary
Stationary Auto-Tuning Disabled
Keeps the status at the
start of Auto-Tuning.
Stationary Auto-Tuning
for Line-to-Line
Resistance
Disabled
Keeps the status at the
start of Auto-Tuning.
PM Motor Auto-Tuning
Rotational
Z-Pulse Offset Tuning Disabled
Keeps the status at the
start of Auto-Tuning.
PM Rotational Auto-
Tuning
Disabled
Functions the same as
during usual operation.
Stationary
PM Motor Parameter
Settings
Disabled Disabled
PM Stationary Auto-
Tuning
Disabled
Keeps the status at the
start of Auto-Tuning.
PM Stationary Auto-
Tuning for Stator
Resistance
Disabled
Keeps the status at the
start of Auto-Tuning.
EZ Tuning Stationary
Motor Parameter Setting Disabled Disabled
Stationary Auto-Tuning
for Line-to-Line
Resistance
Disabled
Keeps the status at the
start of Auto-Tuning.