Eaton MVX9000 - Figure 5-37: Acceleration and Deceleration Times

Group 50 — AC Drive Control
MVX9000 User Manual 5-35
Descriptions of
Parameter Settings
50.15
Deceleration Time 2 Range: 0.01 to 600.00 seconds Default: 10s
Unit: 0.01 seconds
These parameters may be set during operation.
50.12: This parameter sets the time required for the AC drive
to ramp from 0 Hz to its Maximum Output Frequency (50.04).
The rate is linear unless S-Curve is “Enabled.”
50.13: This parameter sets the time required for the AC drive
to decelerate from the Maximum Output Frequency (50.04)
down to 0 Hz. The rate is linear unless S-Curve is “Enabled.”
The second acceleration and deceleration times (50.14 and
50.15) are identical to the standard acceleration and
deceleration times (50.12 and 50.13). The second acceleration
and deceleration times are used only when a Digital input
terminal is programmed to select between times 1 and 2
(Refer to 30.12 to 30.15) or when a frequency other than 0 is
set in parameters 50.16 and 50.17.
In Figure 5-37, the acceleration and deceleration times of the AC
drive are between 0 Hz and Maximum Output Frequency (50.04).
If the Maximum Output Frequency is 60 Hz, Minimum Output
Frequency (50.09) is 1.0 Hz, and acceleration and deceleration
times are set to 10 seconds. The actual time for the AC drive to
accelerate from start-up to 60 Hz is 9.83 seconds and the
deceleration time is also 9.83 seconds. Remember the drive
always starts timing from 0 Hz.
Figure 5-37: Acceleration and Deceleration Times
50.16
Transition Point for
Acceleration Time 1 to 2
Range: Default: 0.0
0.0 Disabled
0.1 to 400 Hz Enabled
Max. Output
Frequency 50.04
Time
Frequency
Acceleration
Time
50.12 or 50.14
Deceleration
Time
50.13 or 50.15