Function Application
‑579‑
3.4.5 Slip Adjustment in Vector Control Mode
In vector control mode (F0‑01 is set to 0 or 1), this parameter can be used to adjust
the speed stability accuracy. For example, increase this parameter when the running
frequency of the motor is lower than the output frequency of the AC drive.
In FVC (F0‑01 is set to 1) mode, this parameter can be used to adjust output current of
the AC drive. For example, decrease this parameter gradually when a high‑rate AC
drive is used to control a motor with low load capacity. Note: The default settings is
applicable in most cases.
Para.
No.
Function Default
Value Range Description
F2‑06
VC slip
compensation
gain
100% 50% to 200%
In SVC mode, this parameter can be used to adjust the speed
stability accuracy. For example, increase this parameter
when the running frequency of the motor is lower than the
output frequency of the AC drive. In FVC mode, this
parameter can be used to adjust output current of the AC
drive. For example, decrease this parameter gradually when
a high‑rate AC drive is used to control a motor with low load
capacity. You do not need to change the value of this
parameter in most cases.
3.4.6 Over-Excitation in Vector Control Mode
For high‑inertia loads, vector control over‑excitation can speed up the motor
deceleration. A larger over‑excitation gain means better improvement. However,
vector control over‑excitation increases the output current of the AC drive.
Para. No. Function Default
Value Range Description
F2‑08
VC deceleration over‑
excitation gain
64 0 to 200 ‑
3.4.7 Torque Upper Limit
The following table describes the torque upper limit settings for vector control (FVC or
SVC).
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