3.12 n: Special Adjustment
240 YASKAWA TOEPYAIGA8001B GA800 Drive Maintenance & Troubleshooting
No.
(Hex.)
Name Description
Default
(Range)
n8-37
(0564)
Expert
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.
Note:
• 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.
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.
Note:
• 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.
250 Hz
(0 - 1000 Hz)
n8-41
(0568)
Expert
HFI P Gain
Sets the response gain for the high frequency injection speed estimation.
Note:
• Set n8-35 = 1 [Initial Pole Detection Method = High Frequency Injection] or n8-57 = 1 [HFI
Overlap Selection = Enabled] to enable this parameter.
• 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)
Expert
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)
n8-46
(0539)
Expert
PM Phase Compensation
Gain
Sets the gain to compensate for phase differences. Usually it is not necessary to change this setting.
0.3
(0.0 - 10.0)
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%
(0 - 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 - +200.0%)
n8-50
(053D)
Medium Load Iq Level
(High)
Sets the load current level to start high efficiency control as a percentage of E5-03 [PM Motor Rated
Current (FLA)]. Usually it is not necessary to change this setting.
80%
(50 - 255%)
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.
Note:
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)]
Determined by A1-02
(0 - 200%)
n8-52
(053F)
Expert
ACR P Gain
Sets the proportional gain of the current regulator. Usually it is not necessary to change this setting.
10.0
(-100.0 - 100.0)
n8-54
(056D)
Expert
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 : Below 1:10
1 : Between 1:10 and 1:30
2 : Between 1:30 and 1:50
3 : Beyond 1:50
0
(0 - 3)
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