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Chapter 5 Parameters 41
EV1000 Series General Purpose Variable Speed Drive User Manual
1
2
3
3
2
1
t
1
t
2
f
max
Frequency
Time
Fig. 5-14 Acc/Dec S Curve
t
f
Acceleration
Deceleration
Fig. 5-15 Auto Acc/Dec
Note
:
In auto Acc/Dec mode, the Acc/Dec time (F0.10,
F0.11, F3.17
~
F3.22) becomes invalid.
F2.06 S curve start time
Range: 10
~
50
%【
20.0
%】
F2.07 S curve rising time Range: 10
~
80
%【
60.0
%】
F2.06 and F2.07 are valid only when F2.05=1 (S
curve mode) and F2.06+F2.07
≤
90
%
.
S curve start time is illustrated in Fig. 5-14 as
①
,
the change rate of output frequency is increasing
from 0.
S curve rising time is illustrated in Fig. 5-14 as
②
,
the change rate remains the same.
S curve end time is illustrated in Fig. 5-14 as
③
.
The change rate decreases to 0.
S curve Acc/Dec is suitable to the start and stop
of elevetor, conveyer, etc.
F2.08 Stop mode
Range: 0, 1, 2
【
0
】
0: decelerate to stop
When the drive receives Stop command, it will
reduce output frequency to zero and stop within
preset deceleration time.
1. Coast to stop
When the drive receives Stop command, it will
stop outputting frequency and stop gradually
relying on load inertia.
2: Deceleration
+
DC braking
When the drive receives Stop command, it will
reduce output frequency within preset Dec time.
When it arrives at the frequency threshold of DC
braking, the DC braking begins. Please refer to
F2.09
~
F2.12.
F2.09 Frequency threshold
of DC brake
Range: 0.00~60.00Hz
【
0.00Hz
】
F2.10 DC brake delay time Range: 0.00~10.00s
【
0.00s
】
F2.11 DC brake current
Range: Depending on model
【
0.0
%】
F2.12 DC brake time at
stop
Range: Depending on
model
【
0.0s
】
DC braking delay time is the period from arriving
at frequency threshold
(
F2.09
)
to starting
braking.
During the period, there is no output from the
drive. This function can prevent current overshoot
of high power motor at startup.
The braking current is different depending on
drive’s model, G type: 0~150% of drive’s rated
current (max. current among the 3 phases), P
type: 0~130% of drive’s rated current (max.
current among the 3 phases).
If the brake time at stop is set at 0.0s, there is no
braking process.
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