Installation manual

Application Parameters
S1A53838 09/2011 85
F504
[Ramp switching]
Acc/Dec Pattern Selection
-
1
1
2
[Ramp 1]
[Ramp 2]
Parameter F504 determines the Acc/Dec pattern.
F505 [Commut. ramp freq.]
Acc/Dec pattern switching frequency 0.0 to [Upper limit freq] (UL)
(Hz)
0.0 Hz
If parameter F505 is set to a frequency greater than 0.0, the drive will use Acc/Dec pattern 1 above that frequency and Acc/Dec
pattern 2 above.
AU1
[Auto ramp]
Auto ramp adaptation 1
0
1
2
[Disabled]
[Enable] - [Acceleration time 1] (ACC) and [Deceleration time 1] (dEC) (see page 83
)
[ACC only] - [Acceleration time 1] (ACC) only
If parameter AU1 is set to 1 or 2, the drive will monitor its own loading level and optimize the acceleration and deceleration
ramps. The acceleration and deceleration (AU1 = 1 only) rates will be automatically adjusted between 1/8 to 8 times the settings
of [Acceleration time 1] (ACC) and [Deceleration time 1] (dEC), depending on the drive’s current rating and the load level on
the motor. ACC and dEC should be appropriately set for an average load in the application. If the load on the motor increases
rapidly during ramp up or ramp down, the auto ramp adaptation feature may not help prevent the drive from experiencing an over-
current or overvoltage.
If the application requires a consistent acceleration and deceleration time, set AU1 to 0, and set ACC and dEC manually as
needed. The manual acceleration and deceleration times can still be overridden by the [Motor Current Limit] (F601) (see page
69
) and [Overvoltage fault] (F305) (see page 128) and [Overvoltage level] (F626) (see page 128) functions.
F300 [Switch. freq. level]
Switching Frequency Level
6.0 to 16.0 kHz in 0.1 kHz steps According to
drive rating (1)
Increasing the switching frequency may reduce audible motor noise.
Increasing the switching frequency will increase the heat dissipated by the drive. The capacity of the drive may need to be derated
accordingly if the switching frequency is increased. See the derating curves in the ATV212 Installation Manual.
(5) See table page 167
.
Code Name / Description Adjustment range Factory setting
0
Output Frequency (Hz)
Time (S)
0
(1) (2) (3) (4)
Output Frequency (Hz)
Speed Reference
(1) ACC Acceleration Slope
(2) F500 Acceleration Slope
(3) F501 Deceleration Slope
(4) dEC Deceleration Slope
Acceleration/Deceleration Switching
Logic Input
Time (S)