Chapter 9. Basic functions
9.4Accel/Decel time and unit setting
zAccel/Decel time setting based on Max frequency
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Drive |
| ACC |
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| [Accel time] |
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| dEC |
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| [Decel time] |
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Function |
| F21 | [Max frequency] | - | |||||
group 1 |
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Function |
| H70 |
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| [Frequency Reference | 0 | |||
group 2 |
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| for Accel/Decel] | |||||
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| H71 |
| [Accel/Decel Time setting | - | ||
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Min/Max
Range
0/6000
0/6000
0/400
0/1
0/2
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| Unit |
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5.0sec
10.0sec
60.0Hz
0
1
Set the desired Accel/Decel time at ACC/dEC in Drive group.
If H70 is set to 0 {Max frequency}, Accel/Decel time is the time that takes to reach the max freq from 0 Hz.
Desired Accel/Decel time unit is settable at the H71.
Accel/Decel time is set based on F21 – [Max frequency]. For instance, if F21 is set to 60Hz, Accel/Decel time 5 sec, and run frequency 30Hz, time to reach 30Hz would be 2.5 sec.
Max. freq. |
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60Hz |
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Run Freq. |
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30Hz |
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Run |
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command |
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Accel time | Decel time |
More precise time unit can be set corresponding to load characteristics as shown below.
Code | Parameter Name | Setting | Set | Description |
| range | value | ||
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H71 |
| 0.01~600.00 | 0 | Unit: 0.01 sec. |
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| [Accel/Decel Time |
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| 0.1~6000.0 | 1 | Unit: 0.1 sec. | |
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| 1~60000 | 2 | Unit: 1 sec. |
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