Dimensioning – Lenze EMB9352−C User Manual
Page 85
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Dimensioning
Dimensioning examples
Vertical movement
l
85
EDBMB935X DE/EN/FR 13.0
Step 1: Calculate brake resistance
R
B
+
U
DC
2
P
gen,max
+
(725 V)
2
11 kW
+ 47.8 W
Step 2: Determine the number of brake resistors
A brake resistor is selected with 47
W.
ƒ
Please observe the rated power when dimensioning the brake resistors. It
results from the average braking power of a machine cycle.
Step 3: Calculate the number of brake choppers per brake resistor
N
Brm
+
P
gen,ave
(3s)
N
R
@ P
N
(U
ch
)
+ 9.33 kW
1
@ 10 kW +
0.933
å 1
The brake resistor requires one brake chopper.
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