
103
Setting of acceleration/deceleration time
and acceleration/deceleration pattern
4
CAUTION
⋅
In S-shaped acceleration/deceleration pattern A
(refer to page 105)
, the set time is the period required to reach the base
frequency set in
Pr. 3 Base frequency
.
⋅
Acceleration/deceleration time formula when the set frequency is the base frequency or higher
⋅
The RT signal can be assigned to the input terminal using any of
Pr. 178 to Pr. 189 (Input terminal function selection)
. Changing the
terminal assignment using
Pr. 178 to Pr. 189 (input terminal function selection)
may affect the other functions. Set parameters after
confirming the function of each terminal.
REMARKS
⋅
The RT signal acts as the second function selection signal and makes the other second function valid.
(Refer to page 127)
⋅
The RT signal is assigned to the RT terminal in the default setting. By setting "3" to any of
Pr. 178 to Pr. 189 (Input terminal function
selection)
, you can assign the RT signal to the other terminal.
⋅
If the
Pr. 20
setting is changed, the
Pr. 125 and Pr. 126 (frequency setting signal gain frequency)
settings do not change. Set
Pr. 125
and Pr. 126
to adjust the gains.
⋅
When the
Pr. 7, Pr. 8, Pr. 44 and Pr. 45
settings are 0.03s or less, the acceleration/deceleration time is 0.04s. At that time, set
Pr.
20
to "120Hz" or less.
⋅
If the acceleration/deceleration time is set, the actual motor acceleration/deceleration time cannot be made shorter than the
shortest acceleration/deceleration time determined by the mechanical system J (moment of inertia) and motor torque.
♦
Parameters referred to
♦
Pr. 3 Base frequency
Refer to page 89
Pr. 10 DC injection brake operation frequency
Refer to page 113
Pr. 29 Acceleration/deceleration pattern selection
Refer to page 105
Pr. 125, Pr. 126 (Frequency setting gain frequency)
Refer to page 179
Pr. 178 to Pr.189 (Input terminal function selection)
Refer to page 124
Pr. 999 Automatic parameter setting
Refer to page 310
⋅
Guideline for acceleration/deceleration time when
Pr. 3 Base frequency
= 60Hz (0Hz to set frequency)
t =
4
×
T
×
f
2
+
5
T
T: Acceleration/deceleration time setting value(s)
f : Set frequency(Hz)
9
(Pr.3)
2
9
Frequency setting (Hz)
60
120
200
400
Acceleration/
deceleration time (s)
5
5
12
27
102
15
15
35
82
305
Содержание -NAFR-F720-00167-NA
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