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Parameter Description
P1312
Issue 10/06
Starting boost
CStat:
CUT
P-Group: CONTROL
Datatype: Float
Active: Immediately
Unit: %
QuickComm.: No
Min:
Def:
Max:
0.0
0.0
250.0
Level
2
Applies a constant linear offset (in [%] relative to P0305 (rated motor current)) to active V/f curve (either
linear or quadratic) after an ON command and is active until
1) ramp output reaches setpoint for the first time respectively
2) setpoint is reduced to less than present ramp output
This is useful for starting loads with high inertia.
Setting the starting boost (P1312) too high will cause the inverter to limit the current, which will in turn
restrict the output frequency to below the setpoint frequency.
ge
lta
o
v
ut
f
tp
u
V/
O
al = 0)
m
r 0
No 130
P
(
where voltage values are given
V StartBoost ,100 = P0305 ⋅ P0350 ⋅
V StartBoost ,50 =
P1312
100
V StartBoost ,100
2
Example:
Setpoint = 50Hz. Ramping up with starting boost. During ramp up, setpoint changed to 20Hz. As soon as
setpoint changed, starting boost removed because setpoint smaller than present ramp output.
Note:
See parameter P1310
Level
r1315
CO: Total boost voltage
Min: Datatype: Float
Unit: V
Def:
P-Group: CONTROL
Max: -
4
Displays total value of voltage boost (in volts).
P1316
Boost end frequency
CStat:
CUT
P-Group: CONTROL
Datatype: Float
Active: Immediately
Unit: %
QuickComm.: No
Min:
Def:
Max:
0.0
20.0
100.0
Level
3
Defines point at which programmed boost reaches 50 % of its value. This value is expressed in [%] relative
to P0310 (rated motor frequency).
The default frequency is defined as follows:
fBoost min = 2 ⋅ (
153
Pmotor
+ 3)
Note:
-
The expert user may change this value to alter the shape of the curve, e.g. to increase torque at a
particular frequency.
Default value is depending on inverter type and its rating data.
Details:
See diagram in P1310 (continuous boost).
102
MICROMASTER 420 Parameter List
6SE6400-5BA00-0BP0