YASKAWA AC Drive GA700 High Performance Type Technical Manual
No.
(Hex.)
Name
Description
Default
(Range)
Ref.
n8-01
(0540)
Expert
Pole Position Detection Current
Sets the Initial Rotor Position Estimated Current as a percentage where E5-03 [PM Motor Rated Current (FLA)] = 100%. Usually it is not necessary to change this setting.
50%
(0 - 100%)
Details
n8-02
(0541)
Pole Alignment Current Level
Sets the current at the time of polar attraction as a percentage where E5-03 [PM Motor Rated Current (FLA)] = 100%. Usually it is not necessary to change this setting.
80%
(0 - 150%)
n8-03
(0542)
Pole Position Detection Time
Sets the length of the Current Starting Time, which is used for Z Pulse Offset Tuning. Usually it is not necessary to change this setting.
1.5 s
(1.5 - 5.0 s)
n8-04
(0543)
Pole Alignment Time
Sets the length of the Polar Attraction Time, which is used for Z Pulse Offset Tuning. Usually it is not necessary to change this setting.
n8-11
(054A)
Observer Calculation Gain 2
Sets the gain for speed estimation. Usually it is not necessary to change this setting.
Determined by n8-72
(0.0 - 1000.0)
n8-14
(054D)
Polarity Compensation Gain 3
1.000
(0.000 - 10.000)
n8-15
(054E)
Polarity Compensation Gain 4
0.500
n8-21
(0554)
Motor Back-EMF (Ke) Gain
0.90
(0.80 - 1.00)
n8-35
(0562)
Initial Pole Detection Method
Sets how the drive detects the position of the rotor at start.
When you operate an SPM motor, set n8-35 = 0. When you operate an IPM motor, you can set n8-35 = 0 to 2.
When you set n8-35 = 1, doHigh Frequency Injection Auto-Tuning.
Determined by A1-02
(0 - 2)
n8-36
(0563)
HFI Frequency Level for L Tuning
Sets the injection frequency for high frequency injection.
Set n8-35 = 1 [Initial Pole Detection Method = High Frequency Injection] or n8-57 = 1 [HFI Overlap Selection = Enabled] to enable this parameter.
The drive automatically calculates this value when High Frequency Injection Auto-Tuning completes successfully.
500 Hz
(200 - 1000 Hz)
n8-37
(0564)
HFI Voltage Amplitude Level
Sets the high frequency injection amplitude as a percentage where 200 V = 100% for 200 V class drives and 400 V = 100% for a 400 V class drives. Usually it is not necessary to change this setting.
20.0%
(0.0 - 50.0%)
n8-39
(0566)
HFI LPF Cutoff Freq
Sets the low-pass filter shut-off frequency for high frequency injection.
250 Hz
(0 - 1000 Hz)
n8-41
(0568)
HFI P Gain
Sets the response gain for the high frequency injection speed estimation.
When A1-02= 6 [Control Method Selection = AOLV/PM] and you do High Frequency Injection Auto-Tuning, the drive automatically sets this parameter .
2.5
(-10.0 - +10.0)
n8-42
(0569)
HFI I Time
Sets the integral time constant for the high frequency injection speed estimation. Usually it is not necessary to change this setting.
0.10 s
(0.00 - 9.99 s)
n8-45
(0538)
Speed Feedback Detection Gain
Sets the internal speed feedback detection reduction unit gain as a magnification value. Usually it is not necessary to change this setting.
0.80
(0.00 - 10.00)
n8-47
(053A)
Pull-in Current Comp Filter Time
Sets the time constant the drive uses to align the pull-in current reference value with the actual current value. Usually it is not necessary to change this setting.
5.0 s
(0.0 - 100.0 s)
n8-48
(053B)
Pull-in/Light Load Id Current
Sets the d-axis current that flows to the motor during run at constant speed as a percentage where E5-03 [PM Motor Rated Current (FLA)] = 100%.
30%
(20 - 200%)
n8-49
(053C)
Heavy Load Id Current
Sets the d-axis current to that the drive will supply to the motor to run it at a constant speed with a heavy load. Considers E5-03 [PM Motor Rated Current (FLA)] to be 100%. Usually it is not necessary to change this setting.
Determined by E5-01
(-200.0 - 0.0%)
n8-51
(053E)
Pull-in Current @ Acceleration
Sets the pull-in current allowed to flow during acceleration/deceleration as a percentage of the motor rated current.
Parameter A1-02 [Control Method Selection] selects which parameter is the motor rated current.
A1-02 = 5 [OLV/PM]: E5-03 [PM Motor Rated Current (FLA)]
A1-02 = 8 [EZOLV]: E9-06 [Motor Rated Current (FLA)]
(0 - 200%)
n8-54
(056D)
Voltage Error Compensation Time
Sets the time constant that the drive uses when adjusting for voltage errors.
1.00 s
(0.00 - 10.00 s)
n8-55
(056E)
Motor to Load Inertia Ratio
Sets the ratio between motor inertia and machine inertia.
0
(0 - 3)
n8-57
(0574)
HFI Overlap Selection
Sets the function that detects motor speed with high frequency injection.
When you set n8-57 = 1, do High Frequency Injection Auto-Tuning.
Use this setting with SPM motors. The speed control range is approximately 1:20.
When n8-57 = 0, you cannot set E1-09 [Minimum Output Frequency] ≤ 1/20 of the value of E1-06 [Base Frequency].
The speed control range is 1:100. It gives sufficient speed detection at low speeds.
It is not available with an SPM motor.
The speed control range 1:100 is the momentary operation area. When you operate the motor continuously, make sure that the drive capacity and motor capacity are acceptable.
(0, 1)
n8-62
(057D)
Output Voltage Limit Level
Sets the output voltage limit to prevent saturation of the output voltage. Usually it is not necessary to change this parameter.
When A1-02 = 7, 8 [Control Method Selection = CLV/PM EZOLV], this parameter is available in Expert mode.
200 V Class: 230.0 V
400 V Class: 460.0 V
200 V Class: 200.0 V,
400 V Class: 400.0 V
(200 V Class: 0.0 to 230.0 V, 400 V Class: 0.0 to 460.0 V)
n8-65
(065C)
Speed Fdbk Gain @ oV Suppression
Sets the gain of internal speed feedback detection suppression while the overvoltage suppression function is operating as a magnification value. Usually it is not necessary to change this parameter.
1.50
n8-69
(065D)
Speed Observer Control P Gain
Usually it is not necessary to change this setting. Sets the Proportional gain that the drive uses for speed estimation.
1.00
(0.00 - 20.00)
n8-72
(0655)
Speed Estimation Method Select
Selects the speed estimation method. Usually it is not necessary to change this setting.
1
n8-74
(05C3)
Light Load Iq Level
Set n8-48 [Pull-in/Light Load Id Current] to the percentage of load current (q-axis current) that you will apply, where E5-03 [PM Motor Rated Current (FLA)] = a setting value of 100%.
(0 - 255%)
n8-75
(05C4)
Medium Load Iq Level (low)
Set n8-78 [Medium Load Id Current] to the percentage of load current (q-axis current) that you will apply, where E5-03 [PM Motor Rated Current (FLA)] = a setting value of 100%.
n8-77
(05CE)
Heavy Load Iq Level
Set n8-49 [Heavy Load Id Current] to the percentage of load current (q-axis current) that you will apply, where E5-03 [PM Motor Rated Current (FLA)] = a setting value of 100%.
90%
n8-78
(05F4)
Medium Load Id Current
Sets the level of the pull-in current for mid-range loads.
0%
n8-79
(05FE)
Pull-in Current @ Deceleration
Sets the pull-in current that can flow during deceleration as a percentage of the E5-03 [PM Motor Rated Current (FLA)].
When n8-79 = 0, the drive will use the value set in n8-51 [Pull-in Current @ Acceleration].
n8-84
(02D3)
Polarity Detection Current
Sets the current that the drive uses to estimate the initial motor magnetic pole as a percentage where E5-03 [PM Motor Rated Current (FLA)] = 100%.
100%
n8-94
(012D)
Flux Position Estimation Method
Sets the criteria that the drive uses to find changes in speed or load. Usually it is not necessary to change this setting.
Set n8-57 = 1 [HFI Overlap Selection = Enabled] to enable this parameter. Increases the stability when the speed or load suddenly change, for example with rapid acceleration/deceleration or impact loads.
Determined by d5-01
n8-95
(012E)
Flux Position Est Filter Time
Sets the time constant of the filter used for the recognition criteria value for speed and load changes. Usually it is not necessary to change this setting.
30 ms
(0 - 100 ms)
