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YASKAWA
SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual
Figure 11.98 Setting Feed Forward Control
■
Preparation Before Executing Feed Forward Control
Perform any of the following procedures before executing feed forward control.
•
Run Auto-Tuning to set motor parameters.
When Auto-Tuning cannot be performed, manually set
E2 parameters
using the information found on the motor
nameplate or test reports.
•
Set
C5 parameters [Auto Speed Regulator (ASR)]
individually to adjust the speed control loop (ASR).
•
Perform Inertia Tuning if a motor can be connected to a machine and rotated when running Auto-Tuning.
Parameters related to Feed Forward control are automatically adjusted when Inertia Tuning is carried out.
•
If the inertia tuning process cannot be performed, refer to
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 o2-04
(0.001 - 10.000 s)
If Inertia Tuning process cannot be performed, calculate the motor acceleration time as illustrated below or
measure the motor acceleration time and set
n5-02
to this value.
Calculate the Motor Acceleration Time
Derive the motor acceleration time using the following expression.
•
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)
The motor acceleration time can also be derived using the following calculation expression.
•
f
rated
= Motor rated frequency (Hz)
•
P = Number of motor poles
V/f
CL-V/f
OLV
CLV
AOLV
V/f
CL-V/f
OLV
CLV
AOLV
Содержание CR700
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