Parameter Details
12
12.10 n: Special Adjustment
YASKAWA SIEPC71061737B GA800 Drive Technical Reference 971
3 : Beyond 1:50
Adjust in the following situations.
• The ratio between the motor inertia and machine inertia is more than 1:50
• Parameter n8-55 = 2 and the drive detects STPo because of an impact load or sudden acceleration/deceleration.
■ n8-56: PM High Performance Selection
No.
(Hex.)
Name Description
Default
(Range)
n8-56
(056F)
Expert
PM High Performance
Selection
Usually it is not necessary to change this setting. Sets the high efficiency control method for IPM
motor.
1
(0 - 2)
0 : Disabled
1 : Enabled (Vd)
2 : Enabled (Vd & Vq)
■ n8-57: HFI Overlap Selection
No.
(Hex.)
Name Description
Default
(Range)
n8-57
(0574)
HFI Overlap Selection
Sets the function that detects motor speed with high frequency injection.
0
(0, 1)
Note:
• When you set n8-57 = 1, doHigh Frequency Injection Auto-Tuning.
• When there is high frequency injection, the motor will make an excitation sound.
• When you use Zero Speed Control, set E1-09 [Minimum Output Frequency] = 0.0.
0 : Disabled
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].
1 : Enabled
The speed control range changes to 1:100 to give sufficient speed detection at low speeds.
Note:
It is not available with an SPM motor.
■ n8-62: Output Voltage Limit Level
No.
(Hex.)
Name Description
Default
(Range)
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.
200 V Class: 200.0 V, 400 V
Class: 400.0 V
(200 V Class: 0.0 to 240.0 V,
400 V Class: 0.0 to 480.0 V)
Set this parameter lower than the input power supply voltage.
Note:
• When A1-02 = 7, 8 [Control Method Selection = CLV/PM, EZOLV], this parameter is available in Expert Mode.
• When A1-02 = 8, the default setting is
–200 V Class: 230.0 V
–400 V Class: 460.0 V
■ n8-63: Output Voltage Limit P Gain
No.
(Hex.)
Name Description
Default
(Range)
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)
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