Installation manual

Application Parameters
S1A53838 09/2011 83
ACC [Acceleration time 1]
0.0 to 3200 s According to
drive rating (5)
The setting of parameter ACC determines the slope of the acceleration ramp and the time it takes for the output frequency of
the drive to increase from 0 Hz to the setting of [Max frequency] (FH) (see page 82
).
If parameter [Auto ramp] (AU1) (see page 85
) is set to 1 or 2, the acceleration ramp may be increased or decreased from the
setting of ACC, depending on the amount of load on the motor during ramp up.
If two different acceleration rates are needed, see parameter [Acceleration time 2] (F500) on page 83
.
dEC [Deceleration time 1]
0.0 to 3200 s According to
drive rating (5)
The setting of parameter dEC determines the slope of the deceleration ramp and the time it takes for the output frequency of
the drive to decrease from the setting of [Max frequency] (FH) to 0 Hz.
If parameter [Auto ramp] (AU1) is set to 1, the deceleration ramp may be increased or decreased from the setting of dEC,
depending on the amount of load on the motor during ramp down. See diagram above.
If two different deceleration rates are needed, see parameter [Deceleration time 2]
(F501) on page 83.
F500
[Acceleration time 2]
0.0 to 3200 s 20.0 s
Parameter F500 sets the second acceleration time. Switching between acceleration rates 1 and 2 is accomplished by means
of:
Parameter [Ramp switching]
(F504) (see page 85),
A particular operating frequency (see parameter [Commut. ramp freq.]
(F505) on page 85), or
A logic input assigned to functions 5, 20, 21, 30, 31 – 35, or 40 (see table beginning on page 91
)
F501
[Deceleration time 2]
0.0 to 3200 s 20.0 s
Parameter F501 sets the second deceleration time. Switching between deceleration rates 1 and 2 is accomplished by means
of:
- Parameter [Ramp switching] (F504) (see page 85
),
- A particular operating frequency (see parameter [Commut. ramp freq.] (F505) on page 85
), or
- A logic input assigned to functions 5, 20, 21, 30, 31 – 35, or 40 (see table beginning on page 91
).
(5) See table page 167
.
Code Name / Description Adjustment range Factory setting
0
Output frequency (Hz)
Time (Sec)
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)