YASKAWA U1000 iQpump Drive, Technical Manual

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u
Fine-Tuning Advanced Open Loop Vector Control for PM Motors
Table 6.5 Parameters for Fine-Tuning Performance in AOLV/PM
Problem Parameter No. Corrective Action Default
Suggested
Setting
• Poor torque or speed
response
• Motor hunting and
oscillation
ASR Proportional Gain
1
(C5-01)
ASR Proportional Gain
2
(C5-03)
• Gradually increase the setting in increments of 5 if
motor torque and speed response are too slow.
• Reduce the setting if motor hunting and oscillation
occur.
• Only adjust parameter C5-03 when C5-05 > 0.
10.00
5.00 to 30.00
<1>
• Poor torque or speed
response
• Motor hunting and
oscillation
ASR Integral Time 1
(C5-02)
ASR Integral Time 2
(C5-04)
• Reduce the setting if motor torque and speed response
are too slow.
• Increase the setting if motor hunting and oscillation
occur.
• Only adjust parameter C5-04 when C5-05 > 0.
0.500 s
0.300 to
1.000 s
<1>
Difficulty maintaining
the ASR proportional
gain or the integral time
at the low or high end of
the speed range
ASR Gain Switching
Frequency (C5-07)
Switch the drive between two different ASR proportional
gain and integral time settings based on the output
frequency.
0.0%
0.0 to
Max r/min
Motor hunting and
oscillation
ASR Primary Delay
Time Constant (C5-06)
Increase the setting if the load is less rigid and subject to
oscillation.
0.010 s
0.016 to
0.035 s
<1>
Motor stalling makes
normal operation
impossible
Motor parameters
(E1- oo , E5- oo )
Check the motor parameter settings. - -
Oscillation at constant
output when U6-02
displays -10% or more.
Output Voltage Limit
Proportional Gain (for
PM Motors) (n8-63)
Decrease the output voltage limit proportional gain
(n8-63).
Note: The speed response will be slow if the
setting is too low.
1.00
0.10 to 1.00
Decrease in
decrements of 0.1
<1> Optimal settings will differ between no-load and loaded operation.
u
Fine-Tuning Closed Loop Vector Control for PM Motors
Table 6.6 Parameters for Fine-Tuning Performance in CLV/PM
Problem Parameter No. Corrective Action Default
Suggested
Setting
• Poor torque or speed
response
• Motor hunting and
oscillation
ASR Proportional Gain
1 (C5-01)
ASR Proportional Gain
2 (C5-03)
• Gradually increase the setting in increments of 5 if
motor torque and speed response are too slow.
• Reduce the setting if motor hunting and oscillation
occur.
• Perform ASR Gain Auto-Tuning if possible
20.00
10.00 to
50.00
<1>
• Poor torque or speed
response
• Motor hunting and
oscillation
ASR Integral Time 1
(C5-02)
ASR Integral Time 2
(C5-04)
• Reduce the setting if torque and speed response are too
slow.
• Increase the setting if motor hunting and oscillation
occur.
0.500 s
0.300 to
1.000 s
<1>
Difficulty maintaining
the ASR proportional
gain or the integral time
at the low or high end of
the speed range
ASR Gain Switching
Frequency (C5-07)
Switch the drive between two different ASR proportional
gain and integral time settings based on the output
frequency.
0.0%
0.0 to
Max r/min
Motor hunting and
oscillation
ASR Primary Delay
Time Constant (C5-06)
Increase the setting if the load is less rigid and subject to
oscillation.
0.016 s
0.004 to
0.020 s
<1>
Motor stall makes
normal operation
impossible
Motor parameters (E1-
oo , E5- oo )
Check the motor parameter settings. - -
Overshoot or
undershoot at speed
changes with high
inertia load
Feed Forward Control
Selection (n5-01)
Inertia Auto-Tuning
(T2-01 = 8)
Set parameter n5-01 to 1 to Enable Feed Forward then
perform Inertia Tuning. Manually set parameters C5-17,
C5-18, and n5-03 if Inertia Tuning is not possible.
0 1
6.2 Motor Performance Fine-Tuning
360 YASKAWA ELECTRIC SIEP C710636 04D U1000 Industrial MATRIX Drive Technical Manual