No. Name Setting Range Default
n8-55 Load Inertia 0 to 3 0
Setting 0: Below 1:10
The inertia ratio between the motor and the load is lower than 1:10.
Setting 1: Between 1:10 and 1:30
The inertia ratio between the motor and the load is between 1:10 and 1:30. Set n8-55 to 1 if an STo fault occurs as a result of
impact load or sudden acceleration/deceleration when n8-55 = 0.
Setting 2: Between 1:30 and 1:50
The inertia ratio between the motor and the load is between 1:30 and 1:50. Set n8-55 to 2 if an STo fault occurs as a result of
impact load or sudden acceleration/deceleration when n8-55 = 1.
Setting 3: Beyond 1:50
The inertia ratio between the motor and the load is higher than 1:50. Set n8-55 to 3 if an STo fault occurs as a result of impact
load or sudden acceleration/deceleration when n8-55 = 2.
n
n8-57: High Frequency Injection
Injects a high frequency into the motor to detect motor speed.
Note: This parameter is only available in AOLV/PM.
No. Name Setting Range Default
n8-57 High Frequency Injection 0, 1 0
Setting 0: Disabled
Disable n8-57 with SPM motors. The speed control range will be limited to approximately 1:20.
Setting 1: Enabled
Enable n8-57 with IPM motors. This allows precise speed detection in a speed control range of approximately 1:100.
Note: 1. This function generates some audible noise in the motor up to a certain speed.
2. Set E1-09 to 0.0 when using zero speed control.
n
n8-62: Output Voltage Limit (for PM Motors)
Sets the output voltage limit to prevent voltage saturation. Do not set this value higher than the actual input voltage.
Note: This parameter is only available in OLV/PM, AOLV/PM, and CLV/PM.
No. Name Setting Range Default
n8-62 Output Voltage Limit (for PM Motors)
0.0 to 250.0 Vac
<1>
200 Vac
<1>
<1> Values shown are specific to 200 V class drives. Double value for 400 V class drives.
n
n8-63: Output Voltage Limit Proportional Gain (for PM Motors)
Stabilizes constant output.
There is normally no need to change this parameter from the default value.
Note: 1. This parameter is only available in OLV/PM, AOLV/PM, and CLV/PM.
2. This parameter is available in drive software versions PRG: 1017 and later.
No. Name Setting Range Default
n8-63 Output Voltage Limit Proportional Gain (for PM Motors) 0.00 to 100.00 1.00
n
n8-64: Output Voltage Limit Integral Time (for PM Motors)
There is normally no need to change this parameter from the default value.
Note: 1. This parameter is only available in OLV/PM, AOLV/PM, and CLV/PM.
2. This parameter is available in drive software versions PRG: 1017 and later.
No. Name Setting Range Default
n8-64 Output Voltage Limit Integral Time (for PM Motors) 0.000 to 5.000 s 0.040 s
5.9 n: Special Adjustments
342
YASKAWA ELECTRIC SIEP C710636 04D U1000 Industrial MATRIX Drive Technical Manual
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