User Manual of A90 Series Inverter the current operating frequency of the motor, please select the appropriate mode based on the working conditions. frequency. This can be applied when the operating conditions of the motor are completely If the units place of F04.08 is 0, tracking will be performed from the maximum uncertain (for example, the motor is already rotating when the inverter is powered on). If the units place of F04.08 is 1, tracking will be performed from the stop frequency. This mode is usually applied. This mode can be applied during switching from the power frequency. If the units place of F04.08 is 2, tracking will be performed from the power frequency.
If the tens place of F04.08 is 0, search will be performed only in the command direction after speed tracking is enabled. In case that the corresponding speed is not found, the inverter will start running from the zero speed. If the tens place of F04.08 is 1, search will be performed first in the command direction after speed tracking is enabled and then in the opposite direction if no speed is found. duration is the time for the rated frequency to decrease to 0.00Hz. F04.10 : scanning speed for speed tracking from the predetermined frequency. The F04.11 : current tracking, ratio to the rated current of the inverter.
The lower the current, the less the impact on the motor is, and the higher the tracking accuracy is. If the set value is too small, the tracking result may be inaccurate, causing failure in start. The higher the current, the less the motor speed drops. This value should be increased during heavy-load tracking. 163 Function Parameter Default Function code name Unit Attribute code description setting F04.10 Deceleration time of speed tracking 0.1 - 20.0 s 2.0 ○ F04.11 Speed tracking current 30.0-150.0 (100.0 = rated current of inverter) % 50.0 ○ F04.12 Speed tracking compensation gain 0.00 - 10.00 1.00 ○