User Manual of EM760 High-Performance Inverter Fig. 6-16 Schematic Diagram of Acceleration and Deceleration Time As shown in the figure above, the acceleration time is defined as the time of acceleration from 0.00 Hz to the reference frequency of acceleration/deceleration time; and the deceleration time is defined as the time of deceleration from the reference frequency of acceleration/deceleration time to 0.00 Hz. The actual acceleration/deceleration time varies according to the ratio between the set frequency and reference frequency.
The reference frequency of acceleration/deceleration time is set by function code F15.09 that represents the reference frequency of acceleration/deceleration time. If F15.09=0, the reference frequency depends on the function code F00.16 (maximum frequency). Assuming F00.16=100.00Hz, the acceleration (deceleration) time is expressed as the time for the output frequency to increase (decrease) from 0.00Hz (100.00Hz) to 100.00Hz (0.00Hz). If F15.09=2, the reference frequency depends on the function code F18.01 (set frequency).
Assuming F18.01=100.00Hz, the acceleration (deceleration) time is expressed as the time for the output frequency to increase (decrease) from 0.00Hz (100.00Hz) to 100.00Hz (0.00Hz). If the motor 1 is running at the normal (e.g. non-PLC/PID) speed (e.g. non-torque) and the acceleration/deceleration time terminals (19: acceleration and deceleration time terminal 1; 20: acceleration and deceleration time terminal 2) are invalid, the acceleration/deceleration time 1 and acceleration/deceleration time 2 can be switched by setting F15.10 to 1, as detailed in the figure below.
118 Function code Function codename Parameter description Unit Default setting Attribute F15.10 Automatic switching of acceleration and deceleration time 0: Invalid 1: valid 0 〇 F15.11 Switching frequency of acceleration time 1 and 2 0.00 to maximum frequency F00.16 Hz 0.00 ● F15.12 Switching frequency of deceleration time 1 and 2 0.00 to maximum frequency F00.16 Hz 0.00 ●