Siemens 440 - Manual (Page 166)

Parameter Description Issue 01/06
MICROMASTER 440 Parameter List
166 6SE6400-5BB00-0BP0
3.29.1.4 Soft starting
P1350[3] Voltage soft start Min: 0
CStat: CUT Datatype: U16 Unit: - Def: 0
P-Group: CONTROL Active: first confirm QuickComm.: No Max: 1
Selecting the soft starting function.
With soft starting, the flux in the motor is established with some delay. This ensures that the motor only
rotates in the required direction of rotation even with existing residual magnetism. When activated, at
powered-on, the output voltage is ramped-up to the value of the characteristic voltage within the
magnetizing time P0346.
f
V
t
1
P0346
P1350 P0346
V/f characteristic Softstart
V
f
f
Possible Settings:
0 OFF
1 ON
Index:
P1350[0] : 1st. Drive data set (DDS)
P1350[1] : 2nd. Drive data set (DDS)
P1350[2] : 3rd. Drive data set (DDS)
Note:
The settings for this parameter bring benefits and drawbacks:
-
P1350 = 0: (jump to boost voltage)
Benefit: flux is built up quickly
Drawback: motor may move
- P1350 = 1: (smooth voltage build-up)
Benefit: motor less likely to move
Drawback: flux build-up takes longer
Level
3