Lenze 9400 Bedienungsanleitung PDF herunterladen (Seite 202)

5 Motor interface

5.8 Parameterisable additional functions

202

Lenze · Servo-Inverter 9400 HighLine · Reference manual · DMS 10.0 EN · 11/2013 · TD05/06

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Distribution of the interpolation points

• The saturation characteristic is defined by 17 interpolation points which are distributed linearly

on the x axis.

• Interpolation point 17 represents 100 % of the maximum motor current in the process (C02855

).

[5-23] Saturation characteristic: Distribution of the interpolation points

Example for determining the saturation characteristic

Given values:

• Rated motor current: 5 A

• Maximum motor current: 20 A

• Maximum process current: 15 A (must be set later in C00022

)

Procedure:

1. Deactivate correction (C02859

= "OFF").

2. Set the maximum current up to which the motor is to be operated in the process in C02855

(in

this example "15 A").

•The value set in C02855

has to be greater or the same as C00022.

3. Adjust the current controller with different current setpoints and take down the corresponding

settings for Vp and Tn.

• The procedure for the adjustment is described in the chapter "Optimising the current

controller".

• The current setpoints that are to be set for the respective adjustment in C00022

result from

the scaling of the maximum process current to the x axis of the saturation characteristic.

• The interpolation points which are required to define the saturation characteristic with a

sufficient quality varies from motor to motor and thus has to be determined individually.

0 6.25 12.5 18.75 25 31.25 37.5 43.75 50 56.25 62.5 68.75 75 81.25 87.5 93.75 100

I

max

Vp

Tn

[V/A]

[ms]

234567891011121314151617

[%]

1

1 2 ... 197 198 199 200 201 202 203 204 205 206 207 ... 953 954

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