Parameter List
3
3.12 n: Special Adjustment
YASKAWA TOEPYAIGA8001B GA800 Drive Maintenance & Troubleshooting 237
No.
(Hex.)
Name Description
Default
(Range)
n4-66
(1B86)
Flux Estimate Response
@Low Freq
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.
1.50
(0.50 - 3.00)
n4-67
(1B87)
Estimate Gain Switchover
Freq
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.
6.00 Hz
(0.00 - E1-04 setting)
n4-68
(1B88)
Speed Estimation Filter
Time
Sets the primary delay time constant for the speed estimation value. Usually it is not necessary to
change this setting.
0.001 s
(0.001 - 0.010 s)
n4-69
(1B89)
Flux Control Response
Unifies control of magnetic flux to make motor vibrations more stable.
1.00
(0.00 - 60.00)
n4-70
(1B8A)
Speed Command Comp @
Low Freq
Sets the function to make the drive more stable when operating at low speeds. Usually it is not
necessary to change this setting.
1.00 Hz
(0.00 - 6.00 Hz)
n4-71
(1B8B)
Expert
Flux Estimation Method
Sets the flux estimation method. Usually it is not necessary to change this setting.
0 : Method 1
1 : Method 2
0
(0, 1)
n4-72
(1B8C)
Speed Feedback Mode
Sets the requirement for an encoder option when A1-02 = 4 [Control Method Selection = Advanced
Open Loop Vector].
0 : Without Encoder
1 : With Encoder
0
(0, 1)
n4-73
(1B8D)
PGo Recovery Selection
Sets the restart mode to Without Encoder Mode or the With Encoder Mode when an encoder is
disconnected.
0 : Without Encoder
1 : With Encoder
0
(0, 1)
n4-74
(1B8E)
Limit of Flux Loop
Sets the control level for flux loop control output.
250%
(100 - 500%)
◆ n5: Feed Forward Control
No.
(Hex.)
Name Description
Default
(Range)
n5-01
(05B0)
Feed Forward Control
Selection
Sets the feed forward function.
0 : Disabled
1 : Enabled
0
(0, 1)
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 C6-01, E5-
01, and o2-04
(0.001 - 10.000 s)
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)
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)
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