YASKAWA GA800 Programming Manual page 492

2.10 n: Special Adjustment
Note:
Do rotational Auto-Tuning before you adjust n4-63, n4-64 [Speed Estimate Response@Low Freq], n4-65 [Flux Estimate Response@High
Freq], and n4-66 [Flux Estimate Response @Low Freq].
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n4-64: Speed Estimate Response@Low Freq
No.
Name
(Hex.)
n4-64 Speed Estimate
Response@Low Freq
(1B84)
If better response of speed estimation is necessary, or if the motor oscillates, or if there is a large quantity of torque
ripple, increase the setting value in 10.0 unit increments.
Note:
Do rotational Auto-Tuning before you adjust n4-63 [Speed EstimateResponse@High Freq], n4-64, n4-65 [Flux Estimate Response@High
Freq], and n4-66 [Flux Estimate Response @Low Freq].
■
n4-65: Flux Estimate Response@High Freq
No.
Name
(Hex.)
n4-65 Flux Estimate
Response@High Freq
(1B85)
If the drive detects oS [Overspeed] in no-load conditions, or if the speed does not become stable in the high speed
range, increase or decrease the setting value in 0.05 unit increments.
■
n4-66: Flux Estimate Response @Low Freq
No.
Name
(Hex.)
n4-66 Flux Estimate Response
@Low Freq
(1B86)
If the drive detects oS [Overspeed] in no-load conditions, or if the speed does not become stable in the low speed
range, increase or decrease the setting value in 0.05 unit increments.
■
n4-67: Estimate Gain Switchover Freq
No.
Name
(Hex.)
n4-67 Estimate Gain Switchover
Freq
(1B87)
When the output frequency ≥ n4-67, the drive will select n4-63 and n4-65. When the output frequency < n4-67, the
drive will select n4-64 and n4-66.
■
n4-68: Speed Estimation Filter Time
No.
Name
(Hex.)
n4-68 Speed Estimation Filter
Time
(1B88)
If the motor speed oscillates in the high speed range, set the value to 0.010 s.
492
V/f CL-V/f OLV CLV AOLV
Sets the responsiveness of the speed estimation in low speed ranges, where 0 ≤ the output frequency,
which is < n4-67 [Estimate Gain Switchover Freq].
V/f CL-V/f OLV CLV AOLV
Sets the responsiveness of the magnetic flux estimation in high speed ranges, where the output
frequency is ≥ n4-67 [Estimate Gain Switchover Freq]. Usually it is not necessary to change this
setting.
V/f CL-V/f OLV CLV AOLV
Sets the responsiveness of the magnetic flux estimation in low speed ranges, where 0 ≤ the output
frequency, which is < n4-67 [Estimate Gain Switchover Freq]. Usually it is not necessary to change
this setting.
V/f CL-V/f OLV CLV AOLV
Sets the switching frequency for estimation gain for these parameters:
n4-63 [Speed EstimateResponse@High Freq]
n4-64 [Speed Estimate Response@Low Freq]
n4-65 [Flux Estimate Response@High Freq]
n4-66 [Flux Estimate Response @Low Freq]
Usually it is not necessary to change this setting.
V/f CL-V/f OLV CLV AOLV
Sets the primary delay time constant for the speed estimation value. Usually it is not necessary to
change this setting.
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
YASKAWA TOEPYAIGA8002B GA800 Drive Programming
Default
(Range)
60.0
(0.1 - 300.0)
Default
(Range)
1.00
(0.50 - 3.00)
Default
(Range)
1.50
(0.50 - 3.00)
Default
(Range)
6.00 Hz
(0.00 - E1-04 setting)
Default
(Range)
0.001 s
(0.001 - 0.010 s)