Issue 01/06

Parameter Description

P1336[3] Slip limit

 

 

 

Min:

0

CStat:

CUT

Datatype: U16

Unit: %

Def:

250

P-Group:

CONTROL

Active: Immediately

QuickComm.: No

Max:

600

Level

2

Compensation slip limit in [%] relative to r0330 (rated motor slip), which is added to frequency setpoint.

Index:

P1336[0] : 1st. Drive data set (DDS)

P1336[1] : 2nd. Drive data set (DDS)

P1336[2] : 3rd. Drive data set (DDS)

Dependency:

Slip compensation (P1335) active.

r1337

CO: V/f slip frequency

 

Min:

-

 

Datatype: Float

Unit: %

Def:

-

 

P-Group: CONTROL

 

Max:

-

Displays actual compensated motor slip as [%]

Dependency:

Slip compensation (P1335) active.

Level

3

3.29.1.2Resonance damping

P1338[3] Resonance damping gain V/f

 

Min:

0.00

CStat:

CUT

Datatype: Float

Unit: -

Def:

0.00

P-Group:

CONTROL

Active: Immediately

QuickComm.: No

Max:

10.00

Level

3

Defines resonance damping gain for V/f. Here, di/dt of the acitve current will be scaled by P1338 (see diagram below). If di/dt increases the resonance damping circuit decreases the inverter output frequency.

P1338

i active

-

P1338

T

f res damping

Index:

P1338[0] : 1st. Drive data set (DDS)

P1338[1] : 2nd. Drive data set (DDS)

P1338[2] : 3rd. Drive data set (DDS)

Note:

-The resonance damping function is used to dampen oscillations in the active current. These especially occur when rotating field motors are operating under no-load conditions. The parameter is not used to optimize the stabilizing behavior.

-In the V/f control modes (refer to P1300), the resonance damping controller is activate in a range from approximately 5 % up to 70 % of the rated motor frequency (P0310).

-An excessively high value results in instability (positive feedback).

MICROMASTER 440

Parameter List

6SE6400-5BB00-0BP0

163

Page 163
Image 163
Siemens 440 manual P13363 Slip limit, R1337 CO V/f slip frequency, P13383 Resonance damping gain V/f, 163