Siemens 440 manual P13503 Voltage soft start, 166

Models: 440

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Parameter Description

Issue 01/06

3.29.1.4Soft 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.

Level

3

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.

P1350 P0346

f

V

f

V/f characteristic

1

V

 

P 0346

t

Softstart

 

 

f

Possible Settings:

0OFF

1ON

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

MICROMASTER 440 Parameter List

6SE6400-5BB00-0BP0

Page 166
Image 166
Siemens 440 manual P13503 Voltage soft start, 166