74
YASKAWA
TOEPC71061752B GA500 Drive Installation & Primary Operation
automatically set parameters
C1-02 [Deceleration Time 1]
(high speed range) and
C1-08
[Deceleration Time 4]
(low speed range).
■
KEB Tuning
KEB Tuning automatically sets parameters used for the KEB Ride-Thru function and for the
overvoltage suppression function.
Control Tuning automatically sets the parameters in
to the best values.
Table 9.9 Parameters set in Control Tuning
Parameters Automatically Set
Deceleration Rate Tuning
KEB Tuning
C1-02 [Deceleration Time 1]
x
-
C1-08 [Deceleration Time 4]
x
-
C1-09 [Fast Stop Time]
-
x
L2-06 [Kinetic Energy Backup Decel
Time]
-
x
L3-25 [Load Inertia Ratio]
-
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 you must not
change the Fast Stop time, 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 you do Auto-Tuning.
•
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 you operate 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.
•
shows the status of multi-function input/output terminals during Auto-Tuning.