YASKAWA GA800 Series, Техническое описание

Страница: 960 / 1016

12.10 n: Special Adjustment
960 YASKAWA SIEPC71061737B GA800 Drive Technical Reference
Figure 12.145 Configure Feed Forward Control
■
Before You Use Feed Forward Control
Do one of these procedures before you use feed forward control.
•
Run Auto-Tuning to set motor parameters.
When you cannot do Auto-Tuning, manually set motor parameters with the information on the motor nameplate or
test reports. Set the
E2 parameters
for induction motors. Set the
E5 parameters
for PM motors.
•
Set
C5 parameters [Automatic Speed Regulator (ASR)]
individually to adjust the speed control loop (ASR).
•
If you can connect a motor to a machine and rotate it during Auto-Tuning, do Inertia Tuning.
The drive automatically adjusts feed forward parameters during Inertia Tuning.
•
If you cannot do Inertia Tuning, refer to Figure 12.145 and set the parameters related to feed forward control
individually.
■
n5-01: Feed Forward Control Selection
No.
(Hex.)
Name Description
Default
(Range)
n5-01
(05B0)
Feed Forward Control
Selection
Sets the feed forward function.
0
(0, 1)
0 : Disabled
1 : Enabled
■
n5-02: Motor Inertia Acceleration Time
No.
(Hex.)
Name Description
Default
(Range)
n5-02
(05B1)
Motor Inertia Acceleration
Time
Sets the length of time for the motor to accelerate from the stopped to the maximum frequency with a
single motor at the rated torque. Inertia Tuning automatically sets the motor acceleration time.
Determined by C6-01, E5-
01, and o2-04
(0.001 - 10.000 s)
If you cannot do Inertia Tuning, calculate the motor acceleration time as shown here or measure the motor
acceleration time and set
n5-02 to this value.
Calculate the Motor Acceleration Time
Use this formula to find the motor acceleration time:
•
J
Motor
= Moment of inertia of motor (kg m
2
)
•
n
rated
= Motor rated speed (min
-1
, r/min)
•
T
rated
= Motor rated torque (N m)
You can also use this formula to find the motor acceleration time:
V/f CL-V/f OLV CLV AOLV OLV/PM OLV/PM AOLV/PM CLV/PM EZOLV
V/f CL-V/f OLV CLV AOLV OLV/PM OLV/PM AOLV/PM CLV/PM EZOLV