Soft Starting; Voltage Soft Start - Siemens MICROMASTER 440 Parameter Manual

Parameter Description
3.29.1.4

Soft starting

P1350[3]

Voltage soft start

CStat: CUT
P-Group: CONTROL
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.
V/f characteristic
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
166
Datatype: U16
Active: first confirm
P1350 P0346
V
1
f
P 0346
Softstart
Unit: -
QuickComm.: No
V
t
f
MICROMASTER 440
Issue 01/06
Level
Min: 0
3
Def: 0
Max: 1
Parameter List
6SE6400-5BB00-0BP0