YASKAWA AC Drive GA700 High Performance Type Technical Manual
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)
When you set n8-57 = 1, do High 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 = 0.0 [Minimum Output Frequency = 0.0 Hz].
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.
