Lenze DSD Manuel d'utilisateur télécharger pdf (Page 180)

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101

7Applications

7.19 Fan

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Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23

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7.19.2.5 Fan load characteristic

[7-177] Load characteristics of the fan

7.19.2.6 Additional moment of inertia

Symbol Description

M(n) Selection of the load characteristic of the fan

• Fans generally have a square-law load characteristic.

 Constant characteristic (M ≈ constant)

 Square-law characteristic (M ≈ n²)

 Rated point of the fan

 Note!

Please use Inverter Drives 8400 in the "VFCplus eco" operating mode.

• The energy-optimised and sensorless operation as well as motor management

with demand-oriented motor control are very well suited for fans with quadratic

load characteristics.

Symbol Description

add

Moment of inertia of the fan.

• Value can be entered directly or calculated using a inertia calculator.

Inertial calculator

( 407)

1 2 ... 175 176 177 178 179 180 181 182 183 184 185 ... 495 496

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Lenze DSD Manuel d'utilisateur Page 180

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