Eaton PowerXL DC1 Series - Second Acceleration and Deceleration Time

6 Drives control
6.2 Second acceleration and deceleration time
106 DC1 variable frequency drive 12/13 MN04020003Z-EN www.eaton.com
6.2 Second acceleration and deceleration time
Figure 62: Acceleration and deceleration times
A frequency of 0 Hz and maximum output frequency f
max
(P-01) will always be the
reference points for the acceleration and deceleration times set in parameters P-03
and P-04.
The values for the acceleration time t
1
and the deceleration time t
2
are
calculated as follows:
t
1
=
P-01 x P-03
t
2
=
P-01 x P-04
P-09 P-09
￫
The defined acceleration (P-03) and deceleration times (P-04)
apply for all changes to the frequency reference value.
If the start-release (FWD, REV) is switched off, the output
frequency (f
Out
) is immediately set to zero. The motor runs down
uncontrolled. If a controlled run-down is requested (with value
from P-04), parameter P-05 must be 0.
Starting friction and load inertia can lead to longer acceleration
times for the drive than those configured in P-03. Large gyrating
masses and the load being driven can lead to longer deceleration
times for the drive than that configured in P-04.
[Hz]
t [s]
f
out
P-09
P-01
P-03
P-04
t
1
t
2
PNU ID Access rights Value Description DS
RUN ro/rw
P-01 129 ✓ rw 0 - 250 Hz
(max. 500 Hz)
Maximum frequency / maximum speed
– shown in Hz or rpm (for P-10 > 0)
P-10 = 0 → P-02 - 5 x P-09 → Hz
P-10 > 0 → P02 - 5 x P-09 x 60 s → rpm
50.0
P-03
131 ✓ rw 0.1 - 600 s Acceleration time (acc1) 5.0
P-04 132 ✓ rw 0.1 - 600 s Deceleration time (dec1) 5.0
P-09 137 – rw 25 - 500 Hz Rated motor frequency (￫ motor rating plate)
Note:
This parameter value is also automatically applied as
the cut-off frequency for the V/Hz characteristic curve.
50.0
1)