User Manual of EM760 High-Performance Inverter When the speed tracking start mode (F04.00=1) is selected, the inverter will be subject to speed tracking according to the setting of F04.08 during the start. For quicker tracking to the current operating frequency ofthe motor, please select the appropriate mode based on the working conditions. If the units place ofF04.08 is 0, tracking will be performed from the maximum frequency. This can be applied when the operating conditions ofthe motor are completely uncertain (for example, the motor is already rotating when the inverter is powered on). If the units place ofF04.08 is 1, tracking will be performed from the stop frequency.
This mode is usually applied. If the units place of F04.08 is 2, tracking will be performed from the power frequency. This mode can be applied during switching from the power frequency. If the tens place ofF04.08 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 ofF04.08 is 1, search will be performed first in the command direction after speed tracking is enabled and then in the opposite direction ifno speed is found. F04.10 : scanning speed for speed tracking from the predetermined frequency.
The duration is the time for the rated frequency to decrease to 0.00Hz. F04.11 : current tracking, ratio to the rated current ofthe 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. F04.12 : tracking intensity, usually taking the default value. When the tracking speed is high and the overvoltage protection is enabled, you can try to increase this value. 6.4.2 Stop method F04.19=0 :
deceleration to stop The motor decelerates to stop according to the set deceleration time [default setting: based on F00.15 (deceleration time 1)]. F04.19=1: free stop When the stop command is valid, the inverter will stop output immediately, and the motor will freely coast to stop. The stop time depends on the inertia ofthe motor and load.
113 Function code Function codename Parameter description Unit Default setting Attribute F04.10 Deceleration time of speed tracking 0.1~20.0 s 2.0 〇 F04.11 Speed tracking current 30.0-150.0 (100.0 = rated current of inverter) % 50.0 〇 F04.12 Speed tracking compensation gain 0.00~10.00 1.00 〇 Function code Function codename Parameter description Unit Default setting Attribute F04.19 Stop mode 0: slow down to stop 1: Free stop 0 〇