4.11 Acc/Dec Pattern Configuration
Acc/Dec gradient level patterns can be configured to enhance and smooth the inverter’s
acceleration and deceleration curves. Linear pattern features a linear increase or decrease to the
output frequency, at a fixed rate. For an S-curve pattern a smoother and more gradual increase
or decrease of output frequency, ideal for lift-type loads or elevator doors, etc. S-curve gradient
level can be adjusted using codes ADV- 03–06 in the Advanced group.
ADV
0–1
03
S-curve Acc start
gradient
Acc S Start 40
1–100
%
04
Acc S End 40
1–100
%
05
S-curve Dec start
gradient
Dec S Start 40 1–100 %
06
Dec S End 40 1–100 %
Acc/Dec Pattern Setting Details
ADV-03 Acc S Start
Sets the gradient level as acceleration starts when using an S-curve, Acc/Dec
pattern. ADV- 03 defines S-curve gradient level as a percentage, up to half of
total acceleration.
If the frequency reference and maximum frequency are set at 60 Hz and ADV-
03 is set to 50%, ADV- 03 configures acceleration up to 30 Hz (half of 60 Hz).The
inverter will operate S-curve acceleration in the 0-15 Hz frequency range (50%
of 30 Hz). Linear acceleration will be applied to the remaining acceleration
within the 15–30 Hz frequency range.
ADV-04 Acc S End
Sets the gradient level as acceleration ends when using an S-curve Acc/Dec
pattern. ADV- 03 defines S-curve gradient level as a percentage, above half of
total acceleration.
If the frequency reference and the maximum frequency are set at 60 Hz and
ADV-04 is set to 50%, setting ADV- 04 configures acceleration to increase from
30 Hz (half of 60 Hz) to 60 Hz (end of acceleration). Linear acceleration will be
applied within the 30-45 Hz frequency range. The inverter will perform an S-
curve acceleration for the remaining acceleration in the 45–60 Hz frequency
range.
ADV-05 Dec S Start –
ADV-06 Dec S End
Sets the rate of S-curve deceleration. Configuration for codes ADV-05 and ADV-
06 may be performed the same way as configuring codes ADV-03 and ADV-04.