YASKAWA
SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual
779
Measure the Motor Acceleration Time
Use the following procedure to measure the motor acceleration time.
1. Select a control method via
A1-02 [Control Method Selection]
.
2. Disconnect the motor and load.
3. 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.
4. Set
C5 parameters [Auto Speed Regulator (ASR)]
.
5. Set
C1-01 [Acceleration Time 1] = 0
.
6. Set
L7-01 [Forward Torque Limit]
to 100%.
7. Set the frequency reference to the same value as the motor rated speed.
8. Measure the time taken by the motor to reach the rated speed.
Display
U1-05 [Motor Speed]
on the keypad and enter the Run command (forward run).
9. Stop the motor.
10. Set
n5-02
to the actual measured motor acceleration time value.
Reset all parameters changed to measure the motor acceleration time to the previous setting values.
■
n5-03: Feed Forward Control Gain
No.
(Hex.)
Name
Description
Default
(Range)
n5-03
(05B2)
Feed Forward Control Gain
Sets the ratio between load inertia and motor inertia. Inertia Tuning automatically sets the
Feedforward Control Gain value.
1.00
(0.00 - 100.00)
When you cannot do Inertia Tuning, use this procedure to set n5-03:
Set
n5-02 [Motor Inertia Acceleration Time]
.
1. Connect the motor and load.
2. Set
C1-01 [Acceleration Time 1] = 0
.
3. Use
L7-01 to L7-04 [Torque Limit]
to set the expected test run torque limit levels.
4. Set the frequency reference as specified by the high speed range of the machine.
5. Measure the length of time for the motor to reach the command reference speed.
Show
U1-05 [Motor Speed]
on the keypad and enter the Run command.
6. Stop the motor.
7. Replace the values in the this formula and set
n5-03
to the value of the formula.
•
t
accel
= Acceleration time (s)
•
f
rated
= Motor rated frequency (Hz)
•
T
Lim_Test
= Test run torque limit (%)
•
f
ref_Test
= Test run frequency reference (Hz)
WARNING!
Sudden Movement Hazard. Machinery can accelerate suddenly. Do not use this function with machinery that must
not accelerate suddenly. Sudden starts can cause serious injury or death.
Reset all of the parameters that you changed to the previous setting values.
Note:
•
If response to the speed reference is slow, increase the value set in
n5-03
.
•
Increase the value set in
n5-03
when response to the speed reference is slow.
–
The speed is overshooting.
–
A negative torque reference is output when acceleration ends.
■
n5-04: Speed Response Frequency
No.
(Hex.)
Name
Description
Default
(Range)
n5-04
(05B3)
RUN
Expert
Speed Response Frequency
Sets the response frequency for the speed reference. Usually it is not necessary to change this
parameter.
Determined by A1-02
(0.00 - 500.00 Hz)
V/f
CL-V/f
OLV
CLV
AOLV
V/f
CL-V/f
OLV
CLV
AOLV
Содержание CR700
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Страница 422: ...7 7 Storage Guidelines 422 YASKAWA SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual ...
Страница 426: ...8 2 Disposal Instructions 426 YASKAWA SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual ...
Страница 837: ...EZZ023535 2 35 1 Revision History Revision Revised Content Date First Edition 2017 08 ...
Страница 872: ...EZZ023536 2 16 Revision History Revision Revised Content Date First Edition 2017 08 ...