Chapter 5 Parameters_VFD-B Series
Revision 10/2005, BE13, SW V4.08 5-35
01-13
01-12
01-21
Frequency
Time
JOG Accel. Time
JOG Decel. Time
The definition of JOG Accel./Decel. Time
01-14
JOG
Frequency
Min. output
frequency
01-05
0 Hz
01-22
01 – 15
aAuto-Acceleration / Deceleration
Factory Setting: 00
Settings 00 Linear acceleration / deceleration
01 Auto acceleration, linear Deceleration.
02 Linear acceleration, auto Deceleration.
03 Auto acceleration / deceleration (set by load)
04 Auto acceleration / deceleration (set by Accel/Decel Time setting)
With Auto acceleration / deceleration it is possible to reduce vibration and shocks during starting/stopping the
load.
During Auto acceleration the torque is automatically measured and the drive will accelerate to the set
frequency with the fastest acceleration time and the smoothest start current.
During Auto deceleration, regenerative energy is measured and the motor is smoothly stopped with the
fastest deceleration time.
But when this parameter is set to 04, the actual accel/decel time will be equal to or more than parameter
Pr.01-09 ~Pr.01-12 and Pr.01-18 to Pr.01-21.
Auto acceleration/deceleration makes the complicated processes of tuning unnecessary. It makes operation
efficient and saves energy by acceleration without stall and deceleration without braking resistor.
In applications with brake resistor or brake unit, Auto deceleration shall not be used.
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