This parameter defines when the reference of the motor potentiometer is set to 0.
There are 3 selections in the reset function: no reset, reset when the drive stops, or reset
when the drive is powered down.
Selection
number
Selection name
Description
0
No reset
The last motor potentiometer frequency reference is kept
through the stop state and kept in memory if a powerdown
occurs.
1
Stop state
The motor potentiometer frequency reference is set to 0
when the drive goes to the stop state, or when the drive is
powered down.
2
Powered down
The motor potentiometer frequency reference is set to 0 only
when a powerdown occurs.
P3.3.22 REVERSE DIRECTION (ID 15530)
Use this parameter to permit running in reverse direction.
10.4
RAMPS AND BRAKES SETUP
P3.4.1 RAMP 1 SHAPE (ID 500)
Use this parameter to make the start and the end of the acceleration and deceleration ramps
smoother.
With the parameter Ramp 1 Shape, you can make smoother the start and the end of the
acceleration and deceleration ramps. If you set the value to 0, you get a linear ramp shape.
The acceleration and deceleration act immediately to the changes in the reference signal.
When you set the value between 0.1 and 10 s, you get an S-shaped acceleration or
deceleration ramp. Use this function to reduce mechanical erosion of the parts and current
spikes when the reference changes. You can modify the acceleration time with parameters
P3.4.2 (Acceleration Time 1) and P3.4.3 (Deceleration Time 1).
VACON · 128
PARAMETER DESCRIPTIONS
10
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