Lenze EMB9352−C - Manual (Page 82)

Dimensioning
Dimensioning examples
Translatory movement
5
l
82 EDBMB935X DE/EN/FR 13.0
5.4 Dimensioning examples
5.4.1 Translatory movement
A translatory movement is to be braked.
Provided data:
ƒ U
DC
= 725 V
ƒ Power characteristic in generator mode:
1 2 3 4 5 t [s]
5
10
15
20
25
30
35
40
45
50
55
P gen [kW]
0
1
9350br_16b
Fig. 4 Power characteristic in generator mode
Data provided by the diagram:
ƒ Max. regenerative power: P
gen,max
= 55 kW
ƒ Average regenerative power over 3 s: P
gen,ave
(3 s) = 34.375 kW
– In a time range of 3 s, the highest power is provided between t = 0 3 s.
The mean value is calculated for this range. The circumscribed area of
the curve represents the average power.
– Mean value 0for 3 s: P
gen,ave
= 13.75 kW
– Mean value 1for 3 s: P
gen,ave
= (55 kW ˘ 13.75 kW) × 0.5 = 20.625 kW