Ramps And Brakes Set-Up - Honeywell HVAC400x Applications Manual

Selection number Selection name
0 No reset
1 Stop state
2 Powered down
P3.3.22 REVERSE DIRECTION (ID 15530)
You can use this parameter to permit running in reverse direction.
10.4

Ramps and Brakes Set-Up

P3.4.1 FORME DE LA RAMPE 1 (ID 500)
You can use this parameter to make the start and the end of the acceleration and deceleration ramps smoother.
Using the parameter Ramp 1 Shape, you can smooth 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. You can
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).
P3.4.2 ACCELERATION TIME 1 (ID 103)
You can use this parameter to set the time that is necessary for the output frequency to increase from zero
frequency to maximum frequency.
RESETTING THE POTENTIOMETER
Hz
ID103, ID104
ID500
Fig. 18. The acceleration/deceleration curve (S-shaped)
HVAC400X – APPLICATION MANUAL
Description
The last motor potentiometer frequency reference is kept through the
stop state and kept in memory if a power-down occurs.
The motor potentiometer frequency reference is set to 0 when the
drive goes to the stop state, or when the drive is powered down.
The motor potentiometer frequency reference is set to 0 only when a
power-down occurs.
ID500
103
t
EN2B-0417GE51 R0719