Operating Instructions

Descriptions of Parameter Settings
Descriptions of Parameter Settings
102 | 443
Auto-acceleration / Auto-deceleration
Pr.
Explanation
Settings
Default
01-44
Auto-acceleration and
auto-deceleration setting
0: Linear acceleration and deceleration
1: Auto-acceleration and linear deceleration
2: Linear acceleration and auto-deceleration
3: Auto-acceleration and auto- deceleration
4: Stall prevention by auto-acceleration and
auto-deceleration (limited by Pr.01-12–Pr.01-21)
0
● 0 (linear acceleration and deceleration): the drive accelerates and decelerates according to the setting for
Pr.01-12–01-19.
● 1 or 2 (auto/linear acceleration and auto/linear deceleration): the drive auto-tunes the acceleration and
deceleration to effectively reduce the mechanical vibration during the load start-up and stop and makes the
auto-tuning process easier. It does not stall during acceleration and does not need a brake resistor during
deceleration to stop. It can also improve operation efficiency and save energy.
● 3 (auto-acceleration and auto-deceleration–decelerating by the actual load): the drive auto-detects the load
torque and automatically accelerates from the fastest acceleration time and smoothest start-up current to the
setting frequency. During deceleration, the drive automatically determines the loaded regenerative energy to
steadily and smoothly stop the motor in the fastest deceleration time.
● 4 (stall prevention by auto-acceleration and deceleration–reference to the acceleration and deceleration time
settings): if the acceleration and deceleration time are within a reasonable range, the actual acceleration and
deceleration time refer to the Pr.01-12–01-19 settings. If the acceleration and deceleration time are too short,
the actual acceleration and deceleration time are greater than the acceleration and deceleration time settings.
Fig. 43: