Chapter 5 Parameters
VFD-E Series
5-32 Revision August 2006, 01EE, SW--PW V1.03/CTL V2.03
01.13
01.12
01.21
Frequency
Time
JOG Accel. Time
JOG Decel. Time
The definition of JOG Accel./Decel. Time
01.15
JOG
Frequency
Min. output
frequency
01.05
0 Hz
01.14
01.16 aAuto-Acceleration / Deceleration
Factory Setting: 0
Settings 0 Linear acceleration / deceleration
1 Auto acceleration, linear Deceleration.
2 Linear acceleration, auto Deceleration.
3 Auto acceleration / deceleration (set by load)
4 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 starting 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.
Auto acceleration/deceleration makes the complicated processes of tuning unnecessary. It
makes operation efficient and saves energy by acceleration without stall and deceleration
without brake resistor.
In applications with brake resistor or brake unit, Auto deceleration shall not be used.
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