Omron SYSDRIVE RV Series User Manual page 116

Control Name (Parameter
Method Number)
Carrier frequency
selection (C6-02)
Open-loop
vector con-
trol (A1-02
Middle output fre-
= 2)
quency voltage
(E1-08)
Minimum output fre-
quency voltage
(E1-10)
ASR proportional gain
1 (C5-01) and
ASR proportional gain
2 (C5-03)
ASR integral time 1
(high-speed) (C5-02)
and
ASR integral time 2
(low-speed) (C5-04)
ASR switching fre-
quency (C5-07)
Flux vector
control
(A1-02 = 3)
ASR primary delay
time (C5-06)
Carrier frequency
selection (C6-02)
* The setting is given for 200 V Class Inverters. Double the voltage for 400 V Class Inverters.
Do not change the Torque Compensation Gain (C4-01) from its default setting of 1.00 when using open-
•
loop vector control.
If speeds are inaccurate during regeneration in open-loop vector control, enable Slip Compensation During
•
Regeneration (C3-04 = 1).
Use slip compensation to improve speed control during V/f control (A1-02 = 0).
•
Set the Motor Rated Current (E2-01), Motor Rated Slip (E2-02), and Motor No-load Current (E2-03), and
then adjust the Slip Compensation Gain (C3-01) to between 0.5 and 1.5. The default setting for V/f control
is C3-01 = 0.0 (slip compensation disabled).
To improve speed response and stability in V/f control with a PG (A1-02 = 1), set the ASR parameters
•
(C5-01 to C5-05) to between 0.5 and 1.5 times the default. (It is not normally necessary to adjust this set-
Table 4.6 Adjusted Parameters (Continued)
Factory
Performance
Setting
• Reducing motor
magnetic noise
Depends
• Controlling hunting
on capac-
and vibration at low
ity
speeds (10 Hz or
less)
• Improving torque at Depends
low speeds on capac-
• Controlling shock at ity and
startup voltage
• Torque and speed
response
20.00
• Controlling hunting
and vibration
• Torque and speed
response
0.500 s
• Controlling hunting
and vibration
Switching the ASR
proportional gain and
integral time accord- 0.0 Hz
ing to the output fre-
quency
• Controlling hunting
0.004 s
and vibration
• Reducing motor
magnetic noise Depends
• Controlling hunting on the
and vibration at low capacity
speeds (3 Hz or less)
Adjustment Suggestions
Recom-
mended Adjustment Method
Setting
• Increase the setting if
motor magnetic noise is
0 to high.
default • Reduce the setting if hunt-
ing or vibration occurs at
low speeds.
• Increase the setting if
Default to
torque or speed response is
Default + 3
slow.
*
• Reduce the setting if shock
to 5 V
at startup is large.
• Increase the setting (by
increments of 5) if torque
10.00 to
or speed response is slow.
50.00
• Reduce the setting if hunt-
ing or vibration occurs.
• Reduce the setting if
torque or speed response is
0.300 to
slow.
1.000 s
• Increase the setting if hunt-
ing or vibration occurs.
Set the output frequency at
which to change the ASR
0.0 to max. proportional gain and inte-
output fre- gral time when the same val-
quency ues cannot be used for both
high-speed and low-speed
operation.
• Reduce the setting (by
increments of 0.01) if
torque or speed response is
0.004 to
show.
0.020 s
• Increase the setting if
machine rigidity is low and
the system vibrates easily.
• Increase the setting if
motor magnetic noise is
high.
2.0 kHz to
• Reduce the setting if hunt-
default
ing or vibration occurs at
low to middle-range
speeds.
21
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