Parameter Description | Issue 01/06 |
3.29.1V/f control technique
P1310[3] Continuous boost |
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| Min: | 0.0 | |
CStat: | CUT | Datatype: Float | Unit: % | Def: | 50.0 |
| CONTROL | Active: Immediately | QuickComm.: No | Max: | 250.0 |
Level
2
P1310 causes a voltage boost depending on the output frequency (see diagran). At low output frequencies the output voltage is low to keep the flux level constant. However, the output voltage may be too low
-for magnetisation the asynchronous motor
-to hold the load
-to overcome losses in the system.
To compensate these effects, the output voltage can be increased using parameter P1310.
Defines boost level in [%] relative to P0305 (rated motor current) applicable to both linear and quadratic V/f curves according to the diagram below:
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| Linear V/f | |
| Boost voltage |
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Vmax |
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| Validity range |
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Vn |
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(P0304) |
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| o | OFF | ||
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| actual V Boost |
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VConBoost,100 |
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| al | V |
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| = 0) | P1310 active | ||||
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| VConBoost,50 |
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0 | fBoost,end |
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| fn | f max | f |
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| (P0310) | (P1082) |
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| Boost voltage |
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Vmax
Validity range
t
t
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Vn (P0304)
VConBoost,100
actual VBoost
VConBoost,50
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| 13 |
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N | o | (P |
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ON
OFF
f
P1310 active
1
0
t
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0 | fBoost,end | fn | fmax | f |
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| (P1316) | (P0310) | (P1082) |
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where voltage values are given
VConBoost,100 = P0305⋅ P0350⋅ P1310
100
V= VConBoost,100
ConBoost,502
Index: |
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P1310[0] | : 1st. Drive data set (DDS) |
P1310[1] | : 2nd. Drive data set (DDS) |
P1310[2] | : 3rd. Drive data set (DDS) |
156 | MICROMASTER 440 Parameter List |