Lenze EMB9352−C Manuel d'utilisateur télécharger pdf (Page 86)

Dimensioning

Dimensioning examples

Complex movement



EDBMB935X DE/EN/FR 13.0

5.4.3 Complex movement

A complex movement is to be braked (e.g. multiple drive axes).

Provided data:

ƒ U

= 725 V

ƒ Power characteristic in generator mode:

123 4 5 6 7 8 9 t [s]

gen

[kW]

9350br_16d

Fig. 6 Power characteristic in generator mode

Data provided by the diagram:

ƒ Max. regenerative power: P

gen,max

= 61.25 kW

ƒ Average regenerative power over 3 s: P

gen,ave

(3 s) = 36.875 kW

– In a time range of 3 s, the highest power is provided between t = 4  7 s.

The mean value is calculated for this range. The circumscribed area of

the curve represents the average power.

– Mean value over 3 s: P

gen,ave

= 12.5 kW

– Mean value over 3 s: P

gen,ave

= (61.25 kW ˘ 12.5 kW) × 0.5 =

24.375 kW

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Lenze EMB9352−C Manuel d'utilisateur Page 86