Parameter List
1
1.12 n: Special Adjustment
YASKAWA TOEPYAIGA5002A GA500 DRIVE PROGRAMMING 95
No.
(Hex.)
Name Description
Default
(Range)
n8-50
(053D)
Expert
Medium Load Iq Level
(High)
Sets the load current level at which heavy load control starts where E5-03 [Motor Rated Current
(FLA)] is 100%. 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%)
n8-54
(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)
n8-56
(056F)
Expert
PM High Performance
Selection
Sets the high efficiency control method for IPM motors. Usually it is not necessary to change this
setting.
0 : Disabled
1 : Enabled (Vd)
2 : Enabled (Vd & Vq)
1
(0 - 2)
n8-57
(0574)
HFI Overlap Selection
Sets the function that detects motor speed with high frequency injection.
Note:
When you set n8-57 = 1, do High Frequency Injection Auto-Tuning.
0 : Disabled
1 : Enabled
0
(0, 1)
n8-62
(057D)
Expert
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.
Note:
When A1-02 = 8 [Control Method Selection = EZOLV], the default settings are:
• 200 V class: 230.0 V
• 400 V class: 460.0 V
200 V Class: 200.0 V, 400 V:
400.0 V
(200 V Class: 0.0 to 240.0 V,
400 V Class: 0.0 to 480.0 V)
n8-63
(057E)
Expert
Output Voltage Limit P Gain
Sets the proportional gain for output voltage control. Usually it is not necessary to change this
setting.
1.00
(0.00 - 100.00)
n8-64
(057F)
Expert
Output Voltage Limit I Time
Sets the integral time for output voltage control. Usually it is not necessary to change this setting.
0.040 s
(0.000 - 5.000)
n8-65
(065C)
Expert
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
(0.00 - 10.00)
n8-69
(065D)
Expert
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)
n8-70
(065E)
Expert
Speed Observer Control I
Time
Sets the speed estimator integral time constant. It is available when n8-72 = 1 [Speed Estimation
Method Select = Method 2]. Usually it is not necessary to change this setting.
0.0 s
(0.0 - 100.0)
n8-71
(065F)
Expert
Speed Observer Control D
Gain
Set the speed estimator differential gain. It is available when n8-72 = 1 [Speed Estimation Method
Select = Method 2]. Usually it is not necessary to change this setting.
5.00
(0.00 - 50.00)
n8-72
(0655)
Expert
Speed Estimation Method
Select
Selects the speed estimation method. Usually it is not necessary to change this setting.
0 : Method 1
1 : Method 2
1
(0, 1)
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