201
9. (F) Settings for Acceleration/Deceleration
9.2 Acceleration/deceleration pattern
1
2
3
4
5
6
7
8
9
10
9.2
Acceleration/deceleration pattern
The acceleration/deceleration pattern can be set according to the application.
Linear acceleration/deceleration (Pr.29 = "0" (initial value))
• When the frequency is changed for acceleration, deceleration, etc. during inverter operation, the output frequency is
changed linearly (linear acceleration/deceleration) to reach the set frequency without straining the motor and inverter.
Linear acceleration/deceleration has a uniform frequency/time slope.
S-pattern acceleration/deceleration A (Pr.29 = "1")
• Use this when acceleration/deceleration is required for a short time until a high-speed area equal to or higher than the base
frequency, such as for the main shaft of the machine.
• The acceleration/deceleration pattern has the
Pr.3 Base frequency
(
Pr.84 Rated motor frequency
under PM motor
control) (fb) as the point of inflection in an S-pattern curve, and the acceleration/deceleration time can be set to be suitable
for the motor torque reduction in the constant-power operation range at the base frequency (fb) or more.
• Acceleration/deceleration time calculation method when the set frequency is equal to or higher than the base frequency
• Reference (0 Hz to set frequency) of acceleration/deceleration time when
Pr.3
= 60 Hz
NOTE
• For the acceleration/deceleration time setting of the S-pattern acceleration/deceleration A, set the time to
Pr.3
(
Pr.84
under
PM sensorless vector control) instead of
Pr.20 Acceleration/deceleration reference frequency
.
Pr.
Name
Initial
value
Setting range
Description
29
F100
Acceleration/deceleration pattern
selection
0
0
Linear acceleration/deceleration
1
S-pattern acceleration/deceleration A
2
S-pattern acceleration/deceleration B
Acceleration time t = (4/9) × (T/fb
2
) × f
2
+ (5/9) × T
Where T is the acceleration/deceleration time (s), f is the set frequency (Hz), and fb is the base frequency (rated motor
frequency)
Acceleration/deceleration time (s)
Set frequency (Hz)
60
120
200
400
5
5
12
27
102
15
15
35
82
305
[Linear acceleration
/ deceleration]
Output frequency
(Hz)
Time
Setting value "0"
fb
[S-pattern acceleration
/deceleration A]
Time
Output frequency
(Hz)
Setting value "1"
Содержание FR-E800
Страница 17: ...16 1 Introduction 1 3 Related manuals MEMO ...
Страница 51: ...50 2 Basic Operation 2 8 I O terminal function assignment MEMO ...
Страница 89: ...88 3 Parameters 3 4 Parameter list by function group number MEMO ...
Страница 135: ...134 5 Speed Control 5 9 Troubleshooting in the speed control MEMO ...
Страница 153: ...152 6 Torque Control 6 7 Troubleshooting in torque control MEMO ...
Страница 195: ...194 8 E Environment Setting Parameters 8 18 Current average value monitor signal MEMO ...
Страница 237: ...236 10 D Operation Command and Frequency Command 10 6 Operation by multi speed setting MEMO ...
Страница 339: ...338 13 T Multi Function Input Terminal Parameters 13 9 Start signal operation selection MEMO ...
Страница 455: ...454 16 G Control Parameters 16 13 Speed smoothing control MEMO ...
Страница 481: ...480 18 Appendix 18 4 Parameters functions and instruction codes under different control methods MEMO ...